modules/web_hook: Add post-push handler for reacting to push events.

closes #142

.appveyor.yml

@@ -1,15 +1,20 @@
 version: master_{build}
 clone_depth: 1
+skip_tags: true
 
 services:
-- docker
+  - docker
+
+branches:
+  only:
+    - appveyor
 
 environment:
   COMMAND: if [[ "${APPVEYOR_REPO_COMMIT_MESSAGE@Q}" == *"[ci debug]"* ]]; then export DEBUG_FLAGS="--enable-debug"; fi; if [[ "${APPVEYOR_REPO_COMMIT_MESSAGE@Q}" == *"[ci gdb]"* ]]; then apt-get update && apt-get -y install gdb && export CONSTRUCT="gdb --batch -ex r -ex bt --return-child-result --args construct"; else export CONSTRUCT="construct"; fi && rmdir -v deps/rocksdb && ln -sv /usr/src/rocksdb deps && ./autogen.sh && ./configure --enable-assert ${DEBUG_FLAGS} && make install && ${CONSTRUCT} -smoketest -debug localhost
 
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu1804
-      DOCKER_IMAGE: jevolk/construct:ubuntu-22.04-base-build-gcc-9-amd64
+      DOCKER_IMAGE: jevolk/construct:ubuntu-22.04-base-build-gcc-10-amd64
 
     - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu1804
       DOCKER_IMAGE: jevolk/construct:ubuntu-22.04-base-build-gcc-12-amd64
@@ -18,8 +23,8 @@ environment:
       DOCKER_IMAGE: jevolk/construct:ubuntu-22.04-full-build-clang-15-amd64
 
 for:
--
-  build_script:
+  -
+    build_script:
     - docker run -v `pwd`:/build "${DOCKER_IMAGE}" /bin/bash -c "${COMMAND}"
 
 matrix:

.github/workflows/docker.yml

@@ -0,0 +1,98 @@
+#
+# Build docker images
+#
+name: Docker Images
+
+on:
+  workflow_dispatch:
+    inputs:
+      features:
+        type: string
+        description: JSON array of feature-set names to build images for.
+      distros:
+        type: string
+        description: JSON array of operating system distros to build for.
+      machines:
+        type: string
+        description: JSON array of machines to build for.
+      toolchains:
+        type: string
+        description: JSON array of compiler toolchains to build for.
+
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  ctor_id: ${{vars.DOCKER_ID}}
+  ctor_url: https://github.com/${{github.repository}}
+
+jobs:
+  # Build the base-feature intermediate images (cached and not shipped).
+  base:
+    uses: ./.github/workflows/docker_prime.yml
+    with:
+      id: ${{github.env.ctor_id}}
+      url: ${{github.env.ctor_url}}
+      features: '["base"]'
+      distros: ${{github.event.inputs.distros || vars.DOCKER_DISTROS}}
+      machines: ${{github.event.inputs.machines || vars.DOCKER_MACHINES}}
+      test: ${{contains(github.events.push.commits[0].message, '[ci test]')}}
+
+  # Build the full-feature intermediate images (cached and not shipped).
+  full:
+    uses: ./.github/workflows/docker_prime.yml
+    needs: [base]
+    with:
+      id: ${{github.env.ctor_id}}
+      url: ${{github.env.ctor_url}}
+      features: '["full"]'
+      distros: ${{github.event.inputs.distros || vars.DOCKER_DISTROS}}
+      machines: ${{github.event.inputs.machines || vars.DOCKER_MACHINES}}
+      test: ${{contains(github.events.push.commits[0].message, '[ci test]')}}
+
+  # Build the leaf images (shipped and not cached)
+  built:
+    needs: [base, full]
+    runs-on: ${{matrix.machine}}
+    strategy:
+      fail-fast: false
+      matrix:
+        feature: ${{fromJSON(github.event.inputs.features || vars.DOCKER_FEATURES)}}
+        distro: ${{fromJSON(github.event.inputs.distros || vars.DOCKER_DISTROS)}}
+        machine: ${{fromJSON(github.event.inputs.machines || vars.DOCKER_MACHINES)}}
+        toolchain: ${{fromJSON(github.event.inputs.toolchains || vars.DOCKER_TOOLCHAINS)}}
+        exclude:
+          - distro: alpine-3.17
+            toolchain: gcc-10      # n/a on distro version
+          - distro: alpine-3.17
+            toolchain: gcc-11      # n/a on distro version
+          - distro: alpine-3.17
+            toolchain: clang-14    # n/a on distro version
+          - distro: ubuntu-22.04
+            toolchain: clang-15    # n/a on distro version
+          - machine: arm64
+            toolchain: gcc-12      # build hangs
+          - machine: arm64
+            toolchain: gcc-11      # build hangs
+          - machine: arm64
+            toolchain: gcc-10      # build hangs
+          - machine: arm64
+            distro: alpine-3.17
+            toolchain: clang-14    # smoketest crash
+          - machine: arm64
+            distro: alpine-3.17
+            toolchain: clang-15    # smoketest crash
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: build
+      env:
+        ctor_features: ${{matrix.feature}}
+        ctor_distros: ${{matrix.distro}}
+        ctor_machines: ${{matrix.machine}}
+        ctor_toolchains: ${{matrix.toolchain}}
+        ctor_test: ${{contains(github.events.push.commits[0].message, '[ci test]')}}
+
+      run: |
+        docker/build-and-push-images.sh

.github/workflows/docker_prime.yml

@@ -0,0 +1,62 @@
+#
+# Build intermediate images
+#
+# Called to build lower-layer images which other images depend on. These are
+# cached for use by the next layer but not shipped to users.
+#
+name: Docker Images Prime
+
+on:
+  workflow_call:
+    inputs:
+      id:
+        type: string
+        description: Dockerhub acct/repo identity.
+      url:
+        type: string
+        description: Git repository for checkout.
+      features:
+        type: string
+        description: JSON array of feature-set names to build images for.
+      distros:
+        type: string
+        description: JSON array of operating system distros to build for.
+      machines:
+        type: string
+        description: JSON array of machines to build for.
+      test:
+        type: boolean
+        default: false
+        required: false
+        description: Echo all docker commands rather than invoking them.
+
+concurrency:
+  group: ${{github.workflow}}-${{inputs.features}}
+  cancel-in-progress: false
+
+env:
+  ctor_id: ${{inputs.id}}
+  ctor_url: ${{inputs.url}}
+
+jobs:
+  prime:
+    runs-on: ${{matrix.machine}}
+    strategy:
+      fail-fast: true
+      matrix:
+        feature: ${{fromJSON(inputs.features)}}
+        distro: ${{fromJSON(inputs.distros)}}
+        machine: ${{fromJSON(inputs.machines)}}
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: build
+      env:
+        ctor_features: ${{matrix.feature}}
+        ctor_distros: ${{matrix.distro}}
+        ctor_machines: ${{matrix.machine}}
+        ctor_toolchains: false
+        ctor_test: ${{inputs.test}}
+
+      run: |
+        docker/build-and-push-images.sh ${{matrix.feature}}

.gitignore

@@ -19,6 +19,7 @@ Makefile
 *.gch
 *.cache
 *.tmp
+*.save
 *.profdata
 .deps
 .dirstamp

README.md

@@ -1,10 +1,10 @@
 # This — is The **Construct**
 
-#### Federated Messaging Server
+#### FEDERATED MESSAGING SERVER
 
 [![Chat in #construct:zemos.net](https://img.shields.io/matrix/construct:zemos.net.svg?label=Chat%20in%20%23construct%3Azemos.net&logo=matrix&server_fqdn=matrix.org&style=for-the-badge&color=5965AF)](https://matrix.to/#/#construct:zemos.net) [![](https://img.shields.io/badge/License-BSD-5965AF.svg?label=%20license&style=for-the-badge)]()
 
-### 📦 RUN YOUR OWN
+### 🚚 GET CONSTRUCT
 
 - `git clone https://github.com/matrix-construct/construct`
 
@@ -13,19 +13,17 @@
 	[![](https://img.shields.io/github/directory-file-count/matrix-construct/construct.svg?type=dir&label=directories&logo=GitHub&style=flat-square&color=5965AF)](https://github.com/matrix-construct/construct)
 	[![](https://img.shields.io/github/directory-file-count/matrix-construct/construct.svg?type=file&label=files&logo=GitHub&style=flat-square&color=5965AF)](https://github.com/matrix-construct/construct)
 
-| Fully Featured Builds | Minimal Dependencies |
-|:---|:---|
-| [![](https://img.shields.io/docker/image-size/jevolk/construct/ubuntu-22.04-full-built-clang-15-amd64.svg?logoWidth=25&label=ubuntu%2022.04%20amd64&logo=Docker&style=flat-square&color=5965AF)](https://registry.hub.docker.com/r/jevolk/construct/tags) | [![](https://img.shields.io/docker/image-size/jevolk/construct/ubuntu-22.04-base-built-gcc-12-amd64.svg?logoWidth=25&label=ubuntu%2022.04%20amd64&logo=Docker&style=flat-square&color=5965AF)](https://registry.hub.docker.com/r/jevolk/construct/tags)
-| [![](https://img.shields.io/docker/image-size/jevolk/construct/alpine-3.16-full-built-clang-amd64.svg?logoWidth=25&label=alpine%203.16%20clang%20amd64&logo=Docker&style=flat-square&color=5965AF)](https://registry.hub.docker.com/r/jevolk/construct/tags) | [![](https://img.shields.io/docker/image-size/jevolk/construct/alpine-3.16-base-built-clang-amd64.svg?logoWidth=25&label=alpine%203.16%20clang%20amd64&logo=Docker&style=flat-square&color=5965AF)](https://registry.hub.docker.com/r/jevolk/construct/tags)
-| [![](https://img.shields.io/docker/image-size/jevolk/construct/alpine-3.16-full-built-gcc-amd64.svg?logoWidth=25&label=alpine%203.16%20gcc%20amd64&logo=Docker&style=flat-square&color=5965AF)](https://registry.hub.docker.com/r/jevolk/construct/tags) | [![](https://img.shields.io/docker/image-size/jevolk/construct/alpine-3.16-base-built-gcc-amd64.svg?logoWidth=25&label=alpine%203.16%20gcc%20amd64&logo=Docker&style=flat-square&color=5965AF)](https://registry.hub.docker.com/r/jevolk/construct/tags)
+- 📦 [**DISTRIBUTION PACKAGES**](https://github.com/matrix-construct/construct/wiki/PACKAGE)
+
+- 🐋 [**DOCKER IMAGES**](https://github.com/matrix-construct/construct/wiki/DOCKER)
 
 ### 🗒️ INSTRUCTIONS
 
-1. 🏗️  [BUILD](https://github.com/matrix-construct/construct/wiki/BUILD) instructions to compile Construct from source.
+1. 🏗️  [**BUILD**](https://github.com/matrix-construct/construct/wiki/BUILD) to compile Construct from source.
 
-2. 🪛 [SETUP](https://github.com/matrix-construct/construct/wiki/SETUP) instructions to run Construct for the first time.
+2. 🪛 [**SETUP**](https://github.com/matrix-construct/construct/wiki/SETUP) to run Construct for the first time.
 
-3. ⚡ [TUNING](https://github.com/matrix-construct/construct/wiki/TUNING) guide to optimize Construct for your deployment.
+3. ⚡ [**TUNING**](https://github.com/matrix-construct/construct/wiki/TUNING) to optimize Construct for your deployment.
 
 - 🙋 [TROUBLESHOOTING](https://github.com/matrix-construct/construct/wiki/Troubleshooting-problems) guide for solutions to possible problems.
 

configure.ac

@@ -83,6 +83,16 @@ dnl
 dnl Platform
 dnl
 
+dnl
+dnl Hardwares
+dnl
+
+AM_CONDITIONAL([AMD64],    [[[[ $host_cpu = *x86_64* ]]]])
+AM_CONDITIONAL([X86_64],   [[[[ $host_cpu = *x86_64* ]]]])
+
+AM_CONDITIONAL([ARM64],    [[[[ $host_cpu = *aarch64* ]]]])
+AM_CONDITIONAL([AARCH64],  [[[[ $host_cpu = *aarch64* ]]]])
+
 dnl
 dnl Compiler brand
 dnl
@@ -151,21 +161,25 @@ dnl Debugging mode
 dnl
 
 AC_MSG_CHECKING(whether to enable debugging)
-AC_ARG_ENABLE(debug, RB_HELP_STRING([--enable-debug], [Enable debugging suite for development]),
+AC_ARG_ENABLE(debug, RB_HELP_STRING([--enable-debug=[[no]]], [Enable debugging suite for development]),
+[
+	debug=$enableval
+], [
+	debug="no"
+])
+
+AC_MSG_RESULT([$debug])
+AM_CONDITIONAL([DEBUG], [[[[ "$debug" = "yes" ]]]])
+
+AM_COND_IF([DEBUG],
 [
-	debug="yes"
-	AC_MSG_RESULT([yes])
 	AC_SUBST(DEBUG, 1)
 	RB_DEFINE_UNQUOTED([DEBUG], [1], [Not configured for release when lit.])
 	RB_DEFINE_UNQUOTED([DEBUG_LEVEL], [1], [Defined to 0 for release; or > 0 otherwise])
 ], [
-	debug="no"
-	AC_MSG_RESULT([no])
-	RB_DEFINE_UNQUOTED([DEBUG_LEVEL], [0], [Defined to 0 for release])
+	RB_DEFINE_UNQUOTED([DEBUG_LEVEL], [0], [Defined to 0 for release; or > 0 otherwise])
 ])
 
-AM_CONDITIONAL([DEBUG], [[[[ "$DEBUG" = "1" ]]]])
-
 dnl
 dnl Compactness
 dnl
@@ -173,14 +187,19 @@ dnl
 AC_MSG_CHECKING(Optimize for size; strip symbols; force no debugging)
 AC_ARG_ENABLE(compact, RB_HELP_STRING([--enable-compact], [Optimize for size and compactness]),
 [
-	AC_MSG_RESULT([yes])
-	AC_SUBST(COMPACT, 1)
-	RB_DEFINE_UNQUOTED([COMPACT], [1], [Not configured for compactness when lit.])
+	compact=$enableval
 ], [
-	AC_MSG_RESULT([no])
+	compact="no"
 ])
 
-AM_CONDITIONAL([COMPACT], [[[[ "$COMPACT" = "1" ]]]])
+AC_MSG_RESULT([$compact])
+AM_CONDITIONAL([COMPACT], [[[[ "$compact" = "yes" ]]]])
+
+AM_COND_IF([COMPACT],
+[
+	AC_SUBST(COMPACT, 1)
+	RB_DEFINE_UNQUOTED([COMPACT], [1], [Not configured for compactness when lit.])
+])
 
 dnl
 dnl Explicit assert switch for still using assert() without --enable-debug
@@ -189,26 +208,26 @@ dnl
 AC_MSG_CHECKING(whether to explicitly enable assertions)
 AC_ARG_ENABLE(assert, RB_HELP_STRING([--enable-assert], [Enable assertions without --enable-debug]),
 [
-	AC_MSG_RESULT([yes])
-	AC_SUBST(ASSERT, 1)
+	assert=$enableval
+	AC_MSG_RESULT([$assert])
 ], [
 	AM_COND_IF(DEBUG,
 	[
-		AC_MSG_RESULT([no, but assertions are enabled anyway])
-		AC_SUBST(ASSERT, 1)
+		assert="yes"
+		AC_MSG_RESULT([$assert, enabled by default with --enable-debug])
 	], [
-		AC_MSG_RESULT([no])
+		assert="no"
+		AC_MSG_RESULT([$assert])
 	])
 ])
 
-AM_CONDITIONAL([ASSERT], [[[[ "$ASSERT" = "1" ]]]])
+AM_CONDITIONAL([ASSERT], [[[[ "$assert" = "yes" ]]]])
 
 AM_COND_IF(ASSERT,
 [
-	assert="yes"
 	assert_type="abort"
+	AC_SUBST(ASSERT, 1)
 ], [
-	assert="no"
 	CPPDEFINE([NDEBUG])
 ])
 
@@ -216,18 +235,17 @@ dnl
 dnl Switch to control the action of assert()
 dnl
 
-AC_MSG_CHECKING(whether to change the behavior of assertions)
-AC_ARG_WITH(assert, RB_HELP_STRING([--with-assert[[[=abort]]]], [Soften assertion behavior]),
+AC_MSG_CHECKING(what the result of a failed assertion implies)
+AC_ARG_WITH(assert, RB_HELP_STRING([--with-assert[[[=abort]]]], [Change assertion behavior]),
 [
 	assert_type=$withval
-	AC_MSG_RESULT([yes, "$assert_type"])
-	AC_SUBST(ASSERT_TYPE, $assert_type)
-], [
-	AC_MSG_RESULT([no])
 ])
 
 AM_COND_IF(ASSERT,
 [
+	AC_MSG_RESULT([$assert_type])
+	AC_SUBST(ASSERT_TYPE, $assert_type)
+
 	if [[ ! -z "$assert_type" ]]; then
 
 		if [[ "$assert_type" != "abort" ]]; then
@@ -243,6 +261,9 @@ AM_COND_IF(ASSERT,
 		fi
 
 	fi
+], [
+	AC_MSG_RESULT([nothing without assertions enabled])
+	assert_type=""
 ])
 
 dnl
@@ -252,19 +273,25 @@ dnl
 AC_MSG_CHECKING(whether to explicitly enable optimized build)
 AC_ARG_ENABLE(optimize, RB_HELP_STRING([--enable-optimize], [Enable optimization even with --enable-debug]),
 [
-	AC_MSG_RESULT([yes])
-	AC_SUBST(OPTIMIZE, 1)
+	optimize=$enableval
+	AC_MSG_RESULT([$optimize])
 ], [
 	AM_COND_IF(DEBUG,
 	[
-		AC_MSG_RESULT([no])
+		optimize="no"
+		AC_MSG_RESULT([$optimize, disabled by default with --enable-debug])
 	], [
-		AC_MSG_RESULT([no, but optimized build is enabled anyway])
-		AC_SUBST(OPTIMIZE, 1)
+		optimize="yes"
+		AC_MSG_RESULT([$optimize])
 	])
 ])
 
-AM_CONDITIONAL([OPTIMIZE], [[[[ "$OPTIMIZE" = "1" ]]]])
+AM_CONDITIONAL([OPTIMIZE], [[[[ "$optimize" = "yes" ]]]])
+
+AM_COND_IF([OPTIMIZE],
+[
+	AC_SUBST(OPTIMIZE, 1)
+])
 
 dnl
 dnl Enable target clones code generation
@@ -273,16 +300,19 @@ dnl
 AC_MSG_CHECKING(whether to generate code for target clones)
 AC_ARG_ENABLE(clones, RB_HELP_STRING([--enable-clones], [Enable target clones generation]),
 [
-	AC_MSG_RESULT([yes])
-	AC_SUBST(CLONES, 1)
-	RB_DEFINE([CLONES], [1], [Function multi-versioning for different architectures])
 	clones="yes"
 ], [
-	AC_MSG_RESULT([no])
 	clones="no"
 ])
 
-AM_CONDITIONAL([CLONES], [[[[ "$CLONES" = "1" ]]]])
+AC_MSG_RESULT([$clones])
+AM_CONDITIONAL([CLONES], [[[[ "$clones" = "yes" ]]]])
+
+AM_COND_IF([CLONES],
+[
+	AC_SUBST(CLONES, 1)
+	RB_DEFINE([CLONES], [1], [Function multi-versioning for different architectures])
+])
 
 dnl
 dnl Explicit link-time-optimization switch
@@ -309,7 +339,6 @@ if test "$lto" = "yes"; then
 			], [
 				lto="yes"
 				AC_MSG_RESULT([yes])
-				AC_SUBST(LTO, 1)
 			])
 		], [
 			lto="no"
@@ -323,7 +352,12 @@ else
 	AC_MSG_RESULT([no])
 fi
 
-AM_CONDITIONAL([LTO], [[[[ "$LTO" = "1" ]]]])
+AM_CONDITIONAL([LTO], [[[[ "$lto" = "yes" ]]]])
+
+AM_COND_IF([LTO],
+[
+	AC_SUBST(LTO, 1)
+])
 
 dnl
 dnl Explicit optimization level switch
@@ -419,67 +453,74 @@ dnl Precompiled headers
 dnl
 
 AC_MSG_CHECKING(whether to enable precompiled headers)
-AC_ARG_ENABLE(pch, RB_HELP_STRING([--disable-pch], [Disable precompiled header generation]),
+AC_ARG_ENABLE(pch, RB_HELP_STRING([--enable-pch], [Enable precompiled header generation]),
 [
 	build_pch=$enableval
-	AC_MSG_RESULT([$enableval])
 ], [
 	build_pch="yes"
-	CPPDEFINE([PCH])
-	AC_MSG_RESULT([yes])
 ])
 
+AC_MSG_RESULT([$build_pch])
 AM_CONDITIONAL([BUILD_PCH], [[[[ "$build_pch" = "yes" ]]]])
 AM_CONDITIONAL([CLANG_PCH], [[[[ "$build_pch" = "yes" ]] && [[ $CXX = clang* ]]]])
 
+AM_COND_IF([BUILD_PCH],
+[
+	CPPDEFINE([PCH])
+])
+
 dnl
 dnl Generic Mode compilation
 dnl
 
-AC_MSG_CHECKING(whether to enable generic mode or tune for this host)
+AC_MSG_CHECKING(whether to enable generic mode or emit for this host)
 AC_ARG_ENABLE(generic, RB_HELP_STRING([--enable-generic], [Emit more generic code for pkg binaries]),
 [
 	enable_generic="yes"
-	AC_MSG_RESULT([yes])
-	RB_DEFINE([GENERIC], [1], [Building binary tuned for generic architectures])
 ], [
 	enable_generic="no"
-	AC_MSG_RESULT([no])
 ])
 
+AC_MSG_RESULT([$enable_generic])
 AM_CONDITIONAL([GENERIC], [[[[ "$enable_generic" = "yes" ]]]])
 
-dnl
-dnl Untuned Mode compilation
-dnl
-
-AC_MSG_CHECKING(whether to enable fully untuned mode)
-AC_ARG_ENABLE(untuned, RB_HELP_STRING([--enable-untuned], [Emit no special feature instructions]),
+AM_COND_IF([GENERIC],
 [
-	enable_untuned="yes"
-	AC_MSG_RESULT([yes])
-	RB_DEFINE([UNTUNED], [1], [Building binary without extended-feature cpu instructions.])
-], [
-	enable_untuned="no"
-	AC_MSG_RESULT([no])
+	RB_DEFINE([GENERIC], [1], [Building binary tuned for generic architectures])
 ])
 
-AM_CONDITIONAL([UNTUNED], [[[[ "$enable_untuned" = "yes" ]]]])
+dnl
+dnl Tuned compilation
+dnl
+
+machine=""
+AC_MSG_CHECKING(whether to emit specific architecture features)
+AC_ARG_WITH(machine, RB_HELP_STRING([--with-machine], [Emit special feature instructions]),
+[
+	if [[ "$withval" != "yes" ]]; then
+		machine=$withval
+	fi
+])
+
+if [[ ! -z "$machine" ]]; then
+	AC_MSG_RESULT([yes])
+else
+	AC_MSG_RESULT([no])
+fi
 
 dnl
 dnl Disable third-party allocators
 dnl
 
 AC_MSG_CHECKING(whether to allow available third-party allocator libraries from being used)
-AC_ARG_ENABLE(malloc-libs, RB_HELP_STRING([--disable-malloc-libs], [Disable third-party dynamic memory libraries (jemalloc/tcmalloc/etc)]),
+AC_ARG_ENABLE(malloc-libs, RB_HELP_STRING([--enable-malloc-libs], [Enable third-party dynamic memory libraries (jemalloc/tcmalloc/etc)]),
 [
 	use_malloc_libs=$enableval
-	AC_MSG_RESULT([$enableval])
 ], [
 	use_malloc_libs="yes"
-	AC_MSG_RESULT([yes])
 ])
 
+AC_MSG_RESULT([$use_malloc_libs])
 AM_CONDITIONAL([MALLOC_LIBS], [[[[ "$use_malloc_libs" = "yes" ]]]])
 
 dnl
@@ -493,6 +534,7 @@ AC_ARG_ENABLE(lowmem-compile, RB_HELP_STRING([--enable-lowmem-compile], [Enable
 	lowmem_compile="no"
 ])
 
+AC_MSG_RESULT([$lowmem_compile])
 AM_CONDITIONAL([LOWMEM_COMPILE], [[[[ $lowmem_compile = "yes" ]]]])
 
 dnl
@@ -737,16 +779,20 @@ AM_COND_IF([GCC],
 [
 	RB_VAR_PREPEND([CXXFLAGS], ["-fstack-protector-explicit"])
 
-	dnl These flags should not be used on Intel-CET capable platforms
-	dnl TODO: XXX
-	AS_IF([test "$CXX_EPOCH" -ge "9"],
+	AS_CASE([$host_cpu],
+	[x86_64],
 	[
-		AM_COND_IF([GENERIC],
+		dnl These flags should not be used on Intel-CET capable platforms
+		dnl TODO: XXX
+		AS_IF([test "$CXX_EPOCH" -ge "9"],
 		[
-			RB_VAR_PREPEND([CXXFLAGS], ["-fcf-protection=full"])
-		], [
-			RB_VAR_PREPEND([CXXFLAGS], ["-fcf-protection=none"])
-			RB_VAR_PREPEND([CXXFLAGS], ["-mmanual-endbr"])
+			AM_COND_IF([GENERIC],
+			[
+				RB_VAR_PREPEND([CXXFLAGS], ["-fcf-protection=return"])
+			], [
+				RB_VAR_PREPEND([CXXFLAGS], ["-fcf-protection=none"])
+				RB_VAR_PREPEND([CXXFLAGS], ["-mmanual-endbr"])
+			])
 		])
 	])
 ])
@@ -760,40 +806,83 @@ dnl
 dnl Machine Tuning
 dnl
 
-TUNE_FLAGS=""
-AM_COND_IF([UNTUNED],
+MACHINE_FLAGS=""
+
+dnl Initial machine
+machine_arch="native"
+machine_tune="native"
+
+AM_COND_IF([CLANG],
 [
-	machine_tuning="generic ${host_cpu} and untuned"
-	RB_VAR_PREPEND([TUNE_FLAGS], ["-mno-default"])
-], [
-	AM_COND_IF([GENERIC],
+	AS_IF([test "$CXX_EPOCH" -lt "15"],
 	[
-		machine_tuning="generic ${host_cpu}"
-		RB_VAR_PREPEND([TUNE_FLAGS], ["-mtune=generic"])
-	], [
-		machine_tuning="${host_cpu} native"
-
-		AS_CASE([$host_cpu],
-		[x86_64],
+		AS_IF([test "$host_cpu" = "aarch64"],
 		[
-			dnl AMD K10's SSE4a doesn't work with valgrind
-			RB_VAR_PREPEND([TUNE_FLAGS], ["-mno-sse4a"])
-
-			dnl Not accepted by clang on aarch64
-			RB_VAR_PREPEND([TUNE_FLAGS], ["-march=native"])
+			machine_arch=""
 		])
-
-		RB_VAR_PREPEND([TUNE_FLAGS], ["-mtune=native"])
 	])
 ])
 
-RB_VAR_PREPEND([CXXFLAGS], ["$TUNE_FLAGS"])
+AM_COND_IF([GENERIC],
+[
+	machine_tune="generic"
+	AS_CASE([$host_cpu],
+	[x86_64],
+	[
+		machine_arch="x86-64"
+	])
+])
+
+dnl Specific extension specification
+machine_feat=""
+for feature in $machine; do
+	if [[ $(echo $feature | cut -d"=" -f1) == "arch" ]]; then
+		machine_arch=$(echo $feature | cut -d"=" -f2)
+	elif [[ $(echo $feature | cut -d"=" -f1) == "tune" ]]; then
+		machine_tune=$(echo $feature | cut -d"=" -f2)
+	else
+		machine_feat="$feature $machine_feat"
+		RB_VAR_PREPEND([MACHINE_FLAGS], [-m${feature}])
+	fi
+done
+
+dnl Ensures mtune=generic accompanies one of the generic march= options
+dnl even if --enable-generic wasn't given, otherwise gcc will reject.
+AM_COND_IF_NOT([GENERIC],
+[
+	AS_CASE([$machine_arch],
+	[x86-64*],
+	[
+		machine_tune="generic"
+	], [
+		machine_tune=$machine_arch
+	])
+])
+
+dnl Specific extension underrides
+AS_CASE([$host_cpu],
+[x86_64],
+[
+	dnl AMD K10's SSE4a doesn't work with valgrind
+	RB_VAR_PREPEND([MACHINE_FLAGS], [-mno-sse4a])
+])
+
+if [[ ! -z "$machine_tune" ]]; then
+	RB_VAR_PREPEND([MACHINE_FLAGS], [-mtune=$machine_tune])
+fi
+
+if [[ ! -z "$machine_arch" ]]; then
+	RB_VAR_PREPEND([MACHINE_FLAGS], [-march=$machine_arch])
+fi
+
+machine_tuning="${host_cpu} arch=$machine_arch tune=$machine_tune :$machine_feat"
+RB_VAR_PREPEND([CXXFLAGS], [$MACHINE_FLAGS])
 
 dnl Get the target features for this build from gcc into a readable string
 AM_COND_IF([GCC],
 [
 	_cxx=$(echo "${CXX}" | cut -d' ' -f1)
-	_cmd="${_cxx} -Q --help=target ${TUNE_FLAGS}"
+	_cmd="${_cxx} -Q --help=target ${MACHINE_FLAGS}"
 	machine_features=$(${_cmd} | grep enabled | grep -v 'mno-')
 	machine_features=$(printf "\n${machine_features}")
 ])
@@ -803,7 +892,7 @@ AM_COND_IF([CLANG],
 [
 	_flag=0
 	_cxx=$(echo "${CXX}" | cut -d' ' -f1)
-	_str=$(${_cxx} -E ${TUNE_FLAGS} - -### 2>&1)
+	_str=$(${_cxx} -E ${MACHINE_FLAGS} - -### 2>&1)
 	machine_features=""
 	for i in $_str; do
 		if [[ $i == '"-target-feature"' ]]; then
@@ -822,22 +911,24 @@ dnl
 dnl Compiler warnings
 dnl
 
-AC_MSG_CHECKING(whether to disable warnings)
+AC_MSG_CHECKING(whether to enable warnings)
 AC_ARG_ENABLE(warnings,
-RB_HELP_STRING([--disable-warnings], [Disable all sorts of warnings like a rockstar]),
+RB_HELP_STRING([--enable-warnings], [Disable all sorts of warnings like a rockstar]),
 [
-	AC_MSG_RESULT([$enableval])
-	warnings="$enableval"
+	warnings=$enableval
 ], [
-	AC_MSG_RESULT([no])
 	warnings="yes"
 ])
 
+AC_MSG_RESULT([$warnings])
+AM_CONDITIONAL([WARNINGS], [[[[ "$warnings" = "yes" ]]]])
+
 AC_DEFUN([RB_MAYBE_CWARN],
 [
-	if test x"$warnings" == x"yes"; then
+	AM_COND_IF([WARNINGS],
+	[
 		RB_MAYBE_CXXFLAG([$1], [$2])
-	fi
+	])
 ])
 
 STACK_USAGE_WARNING=16384
@@ -897,6 +988,7 @@ dnl Compiler specific
 AM_COND_IF([CLANG],
 [
 	RB_MAYBE_CWARN([-Werror=return-stack-address], charybdis_cv_c_gcc_w_error_return_stack_address)
+	RB_MAYBE_CWARN([-Werror=abstract-final-class], charybdis_cv_c_gcc_w_error_abstract_final_class)
 
 	RB_MAYBE_CWARN([-Wundefined-reinterpret-cast], charybdis_cv_c_gcc_w_undefined_reinterpret_cast)
 	RB_MAYBE_CWARN([-Wconditional-uninitialized], charybdis_cv_c_gcc_w_conditional_uninitialized)
@@ -956,10 +1048,13 @@ AM_COND_IF([DEBUG],
 	])
 ], [
 	RB_MAYBE_CWARN([-Wno-unknown-pragmas], charybdis_cv_c_gcc_w_no_unknown_pragmas)
+	RB_MAYBE_CWARN([-Wno-deprecated-declarations], charybdis_cv_c_gcc_w_no_deprecated_declarations)
+	RB_MAYBE_CWARN([-Wno-deprecated], charybdis_cv_c_gcc_w_no_deprecated)
 
 	AM_COND_IF([CLANG],
 	[
 		RB_MAYBE_CWARN([-Wno-unknown-attributes], charybdis_cv_c_gcc_w_no_unknown_attributes)
+		RB_MAYBE_CWARN([-Wno-uninitialized], charybdis_cv_c_gcc_w_no_uninitialized)
 	])
 
 	AM_COND_IF([GCC],
@@ -980,6 +1075,7 @@ AC_MSG_CHECKING(whether to enable warning discovery)
 AC_ARG_ENABLE(every-warning,
 RB_HELP_STRING([--enable-every-warning], [Enable warning discovery (-Weverything)]),
 [
+	AC_MSG_RESULT([yes])
 	RB_MAYBE_CWARN([-Weverything], charybdis_cv_c_gcc_w_everything)
 
 	dnl Ignored a priori
@@ -1017,9 +1113,11 @@ RB_HELP_STRING([--enable-every-warning], [Enable warning discovery (-Weverything
 	dnl Ignored with issue high priority
 	RB_MAYBE_CWARN([-Wno-reserved-identifier], charybdis_cv_c_gcc_w_no_reserved_identifier)
 	RB_MAYBE_CWARN([-Wno-reserved-macro-identifier], charybdis_cv_c_gcc_w_no_reserved_macro_identifier)
+], [
+	AC_MSG_RESULT([no])
 ])
 
-AM_COND_IF_NOT([UNTUNED],
+AM_COND_IF_NOT([GENERIC],
 [
 	dnl When tuning for a specific target ignore the ABI compat warnings
 	RB_MAYBE_CWARN([-Wno-psabi], charybdis_cv_c_gcc_w_psabi)
@@ -1117,7 +1215,7 @@ AC_TYPE_INTPTR_T
 AC_TYPE_UINTPTR_T
 
 dnl C standard type sizes on this platform
-AC_CHECK_SIZEOF([char])
+RB_CHECK_SIZEOF([char], 1)
 AC_CHECK_SIZEOF([short])
 AC_CHECK_SIZEOF([int])
 AC_CHECK_SIZEOF([float])
@@ -1343,19 +1441,20 @@ dnl
 dnl ip6
 dnl
 
-AC_ARG_ENABLE(ipv6, RB_HELP_STRING([--disable-ipv6], [Disable IPv6 support]),
+AC_ARG_ENABLE(ipv6, RB_HELP_STRING([--enable-ipv6], [Enable IPv6 support]),
 [
 	ipv6=$enableval
 ], [
 	ipv6="yes"
 ])
 
-AM_CONDITIONAL([HAVE_IPV6], [[[[ "$ipv6" = "yes" ]]]])
+AM_CONDITIONAL([IPV6], [[[[ "$ipv6" = "yes" ]]]])
 
-AM_COND_IF(HAVE_IPV6,
+AM_COND_IF(IPV6,
 [
 	AC_DEFINE([HAVE_IPV6], [1], [IPv6 is supported])
-],[])
+	AC_SUBST(IPV6, 1)
+])
 
 dnl
 dnl netdb / libnss_db
@@ -1414,12 +1513,14 @@ dnl
 
 AM_COND_IF(LINUX,
 [
-	AC_ARG_ENABLE(aio, RB_HELP_STRING([--disable-aio], [Disable kernel AIO support]),
+	AC_ARG_ENABLE(aio, RB_HELP_STRING([--enable-aio], [Enable kernel AIO support]),
 	[
 		aio=$enableval
 	], [
-		aio=yes
+		aio="yes"
 	])
+
+	AC_MSG_RESULT([$aio])
 ])
 
 AM_CONDITIONAL([AIO], [test "x$aio" = "xyes" ])
@@ -1437,12 +1538,14 @@ dnl
 
 AM_COND_IF(LINUX,
 [
-	AC_ARG_ENABLE(iou, RB_HELP_STRING([--disable-iou], [Disable kernel io_uring support]),
+	AC_ARG_ENABLE(iou, RB_HELP_STRING([--enable-iou], [Enable kernel io_uring support]),
 	[
 		iou=$enableval
 	], [
-		iou=yes
+		iou="yes"
 	])
+
+	AC_MSG_RESULT([$iou])
 ])
 
 AM_CONDITIONAL([IOU], [test "x$iou" = "xyes" ])
@@ -2311,20 +2414,15 @@ PKG_CHECK_MODULES(jemalloc, [jemalloc],
 	])
 ])
 
-AC_MSG_CHECKING(whether to disable use of any found jemalloc)
-AC_ARG_ENABLE(jemalloc, RB_HELP_STRING([--disable-jemalloc], [Disable jemalloc as third-party dynamic memory manager]),
+AC_MSG_CHECKING(whether to enable use of any found jemalloc)
+AC_ARG_ENABLE(jemalloc, RB_HELP_STRING([--enable-jemalloc], [Enable jemalloc as dynamic memory manager]),
 [
 	enable_jemalloc=$enableval
-	if test "$enable_jemalloc" = "no"; then
-		AC_MSG_RESULT([yes])
-	else
-		AC_MSG_RESULT([no])
-	fi
 ], [
-	AC_MSG_RESULT([no])
 	enable_jemalloc="yes"
 ])
 
+AC_MSG_RESULT([$enable_jemalloc])
 AM_CONDITIONAL([JEMALLOC], [test "x$have_jemalloc" = "xyes" && test "x$enable_jemalloc" = "xyes" ])
 
 dnl
@@ -2500,16 +2598,15 @@ dnl pop
 CPPFLAGS=$restore_cppflags
 LDFLAGS=$restore_ldflags
 
-AC_MSG_CHECKING(whether to disable use of any found ROCm)
-AC_ARG_ENABLE(rocm, RB_HELP_STRING([--disable-rocm], [Disable ROCm support]),
+AC_MSG_CHECKING(whether to enable use of any found ROCm)
+AC_ARG_ENABLE(rocm, RB_HELP_STRING([--enable-rocm], [Enable ROCm support]),
 [
-	AC_MSG_RESULT([$enableval])
 	enable_rocm=$enableval
 ], [
-	AC_MSG_RESULT([no])
 	enable_rocm="yes"
 ])
 
+AC_MSG_RESULT([$enable_rocm])
 AM_CONDITIONAL([ROCM], [test "x$have_rocm" = "xyes" && test "x$enable_rocm" = "xyes" ])
 
 AM_COND_IF([ROCM],
@@ -2566,16 +2663,15 @@ dnl pop
 CPPFLAGS=$restore_cppflags
 LDFLAGS=$restore_ldflags
 
-AC_MSG_CHECKING(whether to disable use of any found GPA)
-AC_ARG_ENABLE(gpa, RB_HELP_STRING([--disable-gpa], [Disable GPA support]),
+AC_MSG_CHECKING(whether to enable use of any found GPA)
+AC_ARG_ENABLE(gpa, RB_HELP_STRING([--enable-gpa], [Enable GPA support]),
 [
-	AC_MSG_RESULT([$enableval])
 	enable_gpa=$enableval
 ], [
-	AC_MSG_RESULT([no])
 	enable_gpa="yes"
 ])
 
+AC_MSG_RESULT([$enable_gpa])
 AM_CONDITIONAL([GPA], [test "x$have_gpa" = "xyes" && test "x$enable_gpa" = "xyes" ])
 
 AM_COND_IF([GPA],
@@ -2623,22 +2719,19 @@ PKG_CHECK_MODULES(OpenCL, [OpenCL],
 	])
 ])
 
-AC_MSG_CHECKING(whether to disable use of any found OpenCL)
-AC_ARG_ENABLE(opencl, RB_HELP_STRING([--disable-opencl], [Disable OpenCL support]),
+AC_MSG_CHECKING(whether to enable use of any found OpenCL)
+AC_ARG_ENABLE(opencl, RB_HELP_STRING([--enable-opencl], [Enable OpenCL support]),
 [
-	AC_MSG_RESULT([$enableval])
 	enable_opencl=$enableval
 ], [
-	AC_MSG_RESULT([no])
 	enable_opencl="yes"
 ])
 
-AC_MSG_CHECKING(whether to enable use of any found OpenCL)
+AC_MSG_RESULT([$enable_opencl])
 AM_CONDITIONAL([OPENCL], [test "x$have_opencl" = "xyes" && test "x$enable_opencl" = "xyes" ])
 
 AM_COND_IF([OPENCL],
 [
-	AC_MSG_RESULT([yes])
 	IRCD_DEFINE(USE_OPENCL, [1], [OpenCL support is available and enabled])
 	RB_VAR_APPEND([OPENCL_LIBS], ["-lOpenCL"])
 ], [
@@ -2683,15 +2776,14 @@ PKG_CHECK_MODULES(armnn, [armnn],
 ])
 
 AC_MSG_CHECKING(whether to enable use of any found ArmNN)
-AC_ARG_ENABLE(armnn, RB_HELP_STRING([--disable-armnn], [Disable Arm NN support]),
+AC_ARG_ENABLE(armnn, RB_HELP_STRING([--enable-armnn], [Enable Arm NN support]),
 [
-	AC_MSG_RESULT([$enableval])
 	enable_armnn=$enableval
 ], [
-	AC_MSG_RESULT([yes])
 	enable_armnn="yes"
 ])
 
+AC_MSG_RESULT([$enable_armnn])
 AM_CONDITIONAL([ARMNN], [test "x$have_armnn" = "xyes" && test "x$enable_armnn" = "xyes" ])
 
 AM_COND_IF([ARMNN],

construct/construct.cc

@@ -38,7 +38,6 @@ bool yes6;
 bool norun;
 bool nomain;
 bool read_only;
-bool write_avoid;
 bool slave;
 std::array<bool, 6> smoketest;
 bool megatest;
@@ -51,6 +50,7 @@ const char *diagnostic;
 bool nobanner;
 bool silentmode;
 bool noiouct;
+bool noioust;
 
 lgetopt opts[]
 {
@@ -76,7 +76,6 @@ lgetopt opts[]
 	{ "norun",      &norun,         lgetopt::BOOL,    "[debug] Initialize but never run the event loop" },
 	{ "nomain",     &nomain,        lgetopt::BOOL,    "[debug] Initialize and run without entering ircd::main()" },
 	{ "ro",         &read_only,     lgetopt::BOOL,    "Read-only mode. No writes to database allowed" },
-	{ "wa",         &write_avoid,   lgetopt::BOOL,    "Like read-only mode, but writes permitted if triggered" },
 	{ "slave",      &slave,         lgetopt::BOOL,    "Like read-only mode; allows multiple instances of server" },
 	{ "smoketest",  &smoketest[0],  lgetopt::BOOL,    "Starts and stops the daemon to return success" },
 	{ "megatest",   &megatest,      lgetopt::BOOL,    "Trap execution every millionth tick for diagnostic and statistics." },
@@ -89,6 +88,7 @@ lgetopt opts[]
 	{ "nobanner",   &nobanner,      lgetopt::BOOL,    "Terminal log enabled only in runlevel RUN" },
 	{ "silent",     &silentmode,    lgetopt::BOOL,    "Like quiet mode without console output either" },
 	{ "noiouct",    &noiouct,       lgetopt::BOOL,    "Disable experimental IORING_SETUP_COOP_TASKRUN" },
+	{ "noioust",    &noioust,       lgetopt::BOOL,    "Disable experimental IORING_SETUP_SINGLE_ISSUER" },
 	{ nullptr,      nullptr,        lgetopt::STRING,  nullptr },
 };
 
@@ -558,10 +558,11 @@ applyargs()
 		ircd::db::auto_deletion.set("false");
 	}
 
-	if(single && !bootstrap)
+	if(single)
 	{
-		ircd::write_avoid.set("true");
+		ircd::maintenance.set("true");
 		cmdline = !debugmode;
+		nobackfill = true;
 	}
 
 	if(bootstrap)
@@ -572,21 +573,12 @@ applyargs()
 
 	if(slave)
 	{
-		ircd::db::open_slave.set("true");
+		ircd::slave.set("true");
 		read_only = true; // slave implies read_only
 	}
 
 	if(read_only)
-	{
 		ircd::read_only.set("true");
-		write_avoid = true; // read_only implies write_avoid.
-	}
-
-	if(write_avoid)
-	{
-		ircd::write_avoid.set("true");
-		nobackfill = true;
-	}
 
 	if(debugmode)
 		ircd::debugmode.set("true");
@@ -693,17 +685,28 @@ __wrap_io_uring_queue_init(unsigned entries,
 {
 	namespace info = ircd::info;
 
+	#if defined(IORING_SETUP_COOP_TASKRUN)
 	const bool have_coop_taskrun
 	{
 		info::kernel_version[0] > 5 ||
 		(info::kernel_version[0] >= 5 && info::kernel_version[1] >= 19)
 	};
 
-	#if defined(IORING_SETUP_COOP_TASKRUN)
 	if(have_coop_taskrun && !noiouct)
 		flags |= IORING_SETUP_COOP_TASKRUN;
 	#endif
 
+	#if defined(IORING_SETUP_SINGLE_ISSUER)
+	const bool have_single_issuer
+	{
+		info::kernel_version[0] > 6 ||
+		(info::kernel_version[0] >= 6 && info::kernel_version[1] >= 0)
+	};
+
+	if(have_single_issuer && !noioust)
+		flags |= IORING_SETUP_SINGLE_ISSUER;
+	#endif
+
 	struct io_uring_params params
 	{
 		.flags = flags,

construct/homeserver.cc

@@ -15,6 +15,9 @@
 namespace fs = ircd::fs;
 using ircd::string_view;
 
+decltype(construct::homeserver::primary)
+construct::homeserver::primary;
+
 construct::homeserver::homeserver(struct ircd::m::homeserver::opts opts)
 try
 :opts
@@ -45,6 +48,8 @@ try
 	}
 }
 {
+	assert(!primary);
+	primary = this;
 }
 catch(const std::exception &e)
 {
@@ -59,4 +64,6 @@ catch(const std::exception &e)
 construct::homeserver::~homeserver()
 noexcept
 {
+	assert(primary);
+	primary = nullptr;
 }

construct/homeserver.h

@@ -23,4 +23,6 @@ struct construct::homeserver
   public:
 	homeserver(struct ircd::m::homeserver::opts);
 	~homeserver() noexcept;
+
+	static homeserver *primary;
 };

construct/signals.cc

@@ -8,9 +8,10 @@
 // copyright notice and this permission notice is present in all copies. The
 // full license for this software is available in the LICENSE file.
 
-#include <ircd/ircd.h> // must include because asio.h.gch is fPIC
+#include <ircd/matrix.h>
 #include <ircd/asio.h>
 #include "construct.h"
+#include "homeserver.h"
 #include "signals.h"
 #include "console.h"
 
@@ -19,6 +20,7 @@ namespace construct
 	namespace ph = std::placeholders;
 
 	static void handle_cont();
+	static void handle_usr2();
 	static void handle_usr1();
 	static void handle_quit();
 	static void handle_interrupt();
@@ -41,6 +43,7 @@ construct::signals::signals(boost::asio::io_context &ios)
 	signal_set->add(SIGQUIT);
 	signal_set->add(SIGTERM);
 	signal_set->add(SIGUSR1);
+	signal_set->add(SIGUSR2);
 	signal_set->add(SIGCONT);
 	set_handle();
 }
@@ -132,6 +135,7 @@ construct::handle_signal(const int &signum)
 		case SIGQUIT:  return handle_quit();
 		case SIGTERM:  return handle_quit();
 		case SIGUSR1:  return handle_usr1();
+		case SIGUSR2:  return handle_usr2();
 		case SIGCONT:  return handle_cont();
 		default:       break;
 	}
@@ -225,24 +229,73 @@ try
 		return;
 	}
 
+	if(!homeserver::primary || !homeserver::primary->module[0])
+		return;
+
 	// This signal handler (though not a *real* signal handler) is still
 	// running on the main async stack and not an ircd::ctx. The reload
 	// function does a lot of IO so it requires an ircd::ctx.
 	ircd::context{[]
 	{
-		ircd::mods::import<void ()> reload_conf
+		static ircd::mods::import<void (ircd::m::homeserver *)> rehash
 		{
-			"s_conf", "reload_conf"
+			homeserver::primary->module[0], "ircd::m::homeserver::rehash"
 		};
 
-		reload_conf();
+		assert(homeserver::primary->hs);
+		rehash(homeserver::primary->hs.get());
 	}};
 }
 catch(const std::exception &e)
 {
 	ircd::log::error
 	{
-		"SIGUSR1 handler: %s", e.what()
+		"SIGUSR1 handler :%s",
+		e.what()
+	};
+}
+
+void
+construct::handle_usr2()
+try
+{
+	if(ircd::run::level != ircd::run::level::RUN)
+	{
+		ircd::log::warning
+		{
+			"Not synchronizing database from SIGUSR2 in runlevel %s",
+			reflect(ircd::run::level)
+		};
+
+		return;
+	}
+
+	if(!ircd::slave)
+		return;
+
+	if(!homeserver::primary || !homeserver::primary->module[0])
+		return;
+
+	ircd::context{[]
+	{
+		static ircd::mods::import<bool (ircd::m::homeserver *)> refresh
+		{
+			homeserver::primary->module[0], "ircd::m::homeserver::refresh"
+		};
+
+		assert(homeserver::primary->hs);
+		const bool refreshed
+		{
+			refresh(homeserver::primary->hs.get())
+		};
+	}};
+}
+catch(const std::exception &e)
+{
+	ircd::log::error
+	{
+		"SIGUSR2 handler :%s",
+		e.what()
 	};
 }
 

docker/alpine/base/Dockerfile

@@ -1,4 +1,7 @@
-FROM --platform=$TARGETPLATFORM alpine:3.16.1
+ARG dist_name alpine
+ARG dist_version 3.16
+
+FROM --platform=$TARGETPLATFORM ${dist_name}:${dist_version}
 
 ENV packages="\
 boost-chrono \

docker/alpine/built/Dockerfile

@@ -1,17 +1,20 @@
 ARG acct
 ARG repo
+ARG dist_name
+ARG dist_version
 ARG feature
+ARG machine
 
-FROM ${acct}/${repo}:alpine-3.16-${feature}-${TARGETARCH}
+FROM ${acct}/${repo}:${dist_name}-${dist_version}-${feature}-${machine}
 
 ARG cc
 ARG cxx
 ARG extra_packages_dev
-ARG extra_packages_dev1
-ARG extra_packages_dev2
 ARG rocksdb_version 7.4.3
 ARG rocksdb_url
 ARG ctor_url https://github.com/matrix-construct/construct
+ARG machine_spec
+ARG nprocs
 
 ENV CC ${cc}
 ENV CXX ${cxx}
@@ -20,12 +23,13 @@ ENV CONFIG_SHELL bash
 ENV rocksdb_version ${rocksdb_version}
 ENV rocksdb_url https://codeload.github.com/facebook/rocksdb/tar.gz/refs/tags/v${rocksdb_version}
 ENV ctor_url ${ctor_url}
+ENV machine_spec ${machine_spec}
+ENV nprocs ${nprocs}
 
 ENV packages_dev="\
 ${packages_dev} \
 autoconf \
 autoconf-archive \
-autoconf2.13 \
 automake \
 bash \
 binutils-gold \
@@ -34,8 +38,6 @@ curl \
 git \
 libtool \
 ${extra_packages_dev} \
-${extra_packages_dev1} \
-${extra_packages_dev2} \
 "
 
 WORKDIR /usr/src
@@ -50,8 +52,8 @@ RUN true \
 && ln -sv /usr/src/rocksdb construct/deps/rocksdb \
 && cd /usr/src/construct \
 && ./autogen.sh \
-&& (./configure --disable-iou || (cat config.log; exit 1)) \
-&& make -j `nproc` EXTRA_LDFLAGS="-Wl,--strip-all" install \
+&& (./configure --disable-iou --enable-generic --with-machine="${machine_spec}" || (cat config.log; exit 1)) \
+&& make -j ${nprocs} EXTRA_LDFLAGS="-Wl,--strip-all" install \
 && rm -rf /usr/src/rocksdb \
 && rm -rf /usr/src/construct \
 && rm -rf /usr/include/ircd \

docker/alpine/full/Dockerfile

@@ -1,7 +1,10 @@
 ARG acct
 ARG repo
+ARG dist_name
+ARG dist_version
+ARG machine
 
-FROM ${acct}/${repo}:alpine-3.16-base-${TARGETARCH}
+FROM ${acct}/${repo}:${dist_name}-${dist_version}-base-${machine}
 
 ENV packages="\
 freetype \

docker/alpine/test/Dockerfile

@@ -1,9 +1,12 @@
 ARG acct
 ARG repo
+ARG dist_name
+ARG dist_version
 ARG feature
 ARG cc
+ARG machine
 
-FROM ${acct}/${repo}:alpine-3.16-${feature}-built-${cc}-${TARGETARCH}
+FROM ${acct}/${repo}:${dist_name}-${dist_version}-${feature}-built-${cc}-${machine}
 
 ENV ircd_mods_unload_check=false
 WORKDIR /root

docker/build-and-push-images.sh

@@ -1,181 +1,283 @@
 #!/bin/sh
 
-BASEDIR=$(dirname "$0")
-ACCT=jevolk
-REPO=construct
-ctor_url="https://github.com/matrix-construct/construct"
-rocksdb_version=7.4.3
+# Sundry configuration
 
-ARGS_=""
-ARGS_="$ARGS_ --compress=true"
-ARGS_="$ARGS_ --build-arg acct=$ACCT"
-ARGS_="$ARGS_ --build-arg repo=$REPO"
-ARGS_="$ARGS_ --build-arg ctor_url=$ctor_url"
-ARGS_="$ARGS_ --build-arg rocksdb_version=$rocksdb_version"
+BASEDIR=$(dirname "$0")
+stage=$1
+mode=$2
 
 export DOCKER_BUILDKIT=1
-#export BUILDKIT_PROGRESS=plain
+if test "$CI" = true; then
+	export BUILDKIT_PROGRESS="plain"
+	echo "plain"
+fi
+
+# The stage argument can be "base" "full" "built" "test" or "push"
+default_stage="push"
+stage=${stage:=$default_stage}
+
+# The mode argument can be "real" or "test"
+default_mode="real"
+mode=${mode:=$default_mode}
+
+if test "$ctor_test" = true; then
+	mode="test"
+fi
+
+# Account configuration environment.
+#
+# Override these for yourself.
+
+default_ctor_url="https://github.com/jevolk/charybdis"
+default_ctor_id="jevolk/construct"
+
+ctor_url=${ctor_url:=$default_ctor_url}
+ctor_id=${ctor_id:=$default_ctor_id}
+ctor_acct=${ctor_acct:=$(echo $ctor_id | cut -d"/" -f1)}
+ctor_repo=${ctor_repo:=$(echo $ctor_id | cut -d"/" -f2)}
+
+# Job matrix configuration environment
+#
+# All combinations of these arrays will be run by this script. Overriding
+# these with one element for each variable allows this script to do one thing
+# at a time.
+
+default_ctor_features="base full"
+default_ctor_distros="ubuntu-22.04 ubuntu-22.10 alpine-3.17"
+default_ctor_machines="amd64 amd64-avx amd64-avx512"
+default_ctor_toolchains="gcc-10 gcc-11 gcc-12 clang-14"
+
+ctor_features=${ctor_features:=$default_ctor_features}
+ctor_distros=${ctor_distros:=$default_ctor_distros}
+ctor_machines=${ctor_machines:=$default_ctor_machines}
+ctor_toolchains=${ctor_toolchains:=$default_ctor_toolchains}
 
 ###############################################################################
-#
-# Alpine 3.16
-#
 
-#
-# L0 - Base featured image
-#
+matrix()
+{
+	for ctor_feature in $ctor_features; do
+		for ctor_distro in $ctor_distros; do
+			for ctor_machine in $ctor_machines; do
+				for ctor_toolchain in $ctor_toolchains; do
+					build $ctor_feature $ctor_distro $ctor_machine $ctor_toolchain
+					if test $? -ne 0; then return 1; fi
+				done
+			done
+		done
+	done
+	return 0
+}
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-base-amd64 $BASEDIR/alpine/3.16/base
+build()
+{
+	feature=$1
+	distro=$2
+	machine=$3
+	toolchain=$4
+	dist_name=$(echo $distro | cut -d"-" -f1)
+	dist_version=$(echo $distro | cut -d"-" -f2)
+	runner_name=$(echo $RUNNER_NAME | cut -d"." -f1)
+	runner_num=$(echo $RUNNER_NAME | cut -d"." -f2)
 
-#
-# L1 - Fully featured image
-#
+	args="$ctor_docker_build_args"
+	args="$args --compress=true"
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-full-amd64 $BASEDIR/alpine/3.16/full
+	if test ! -z "$runner_num"; then
+		cpu_num=$(expr $runner_num % $(nproc))
+		args="$args --cpuset-cpus=${cpu_num}"
+		args="$args --build-arg nprocs=1"
+		# https://github.com/moby/buildkit/issues/1276
+	else
+		nprocs=$(nproc)
+		args="$args --build-arg nprocs=${nprocs}"
+	fi
 
-#
-# L2/L3 - Built/Test images
-#
+	args="$args --build-arg acct=${ctor_acct}"
+	args="$args --build-arg repo=${ctor_repo}"
+	args="$args --build-arg ctor_url=${ctor_url}"
+	args="$args --build-arg dist_name=${dist_name}"
+	args="$args --build-arg dist_version=${dist_version}"
+	args="$args --build-arg machine=${machine}"
+	args="$args --build-arg feature=${feature}"
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=base"
-ARGS="$ARGS --build-arg extra_packages_dev=gcc"
-ARGS="$ARGS --build-arg extra_packages_dev1=g++"
-ARGS="$ARGS --build-arg cc=gcc --build-arg cxx=g++"
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-base-built-gcc-amd64 $BASEDIR/alpine/3.16/built
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-base-test-gcc-amd64 $BASEDIR/alpine/3.16/test
+	args_dist $dist_name $dist_version
+	if test $? -ne 0; then return 1; fi
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=base"
-ARGS="$ARGS --build-arg extra_packages_dev=clang"
-ARGS="$ARGS --build-arg extra_packages_dev1=llvm"
-ARGS="$ARGS --build-arg extra_packages_dev2=llvm-dev"
-ARGS="$ARGS --build-arg cc=clang --build-arg cxx=clang++"
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-base-built-clang-amd64 $BASEDIR/alpine/3.16/built
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-base-test-clang-amd64 $BASEDIR/alpine/3.16/test
+	args_machine $machine
+	if test $? -ne 0; then return 1; fi
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=full"
-ARGS="$ARGS --build-arg extra_packages_dev=gcc"
-ARGS="$ARGS --build-arg extra_packages_dev1=g++"
-ARGS="$ARGS --build-arg cc=gcc --build-arg cxx=g++"
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-full-built-gcc-amd64 $BASEDIR/alpine/3.16/built
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-full-test-gcc-amd64 $BASEDIR/alpine/3.16/test
+	args_platform $machine
+	if test $? -ne 0; then return 1; fi
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=full"
-ARGS="$ARGS --build-arg extra_packages_dev=clang"
-ARGS="$ARGS --build-arg extra_packages_dev1=llvm"
-ARGS="$ARGS --build-arg extra_packages_dev2=llvm-dev"
-ARGS="$ARGS --build-arg cc=clang --build-arg cxx=clang++"
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-full-built-clang-amd64 $BASEDIR/alpine/3.16/built
-docker build $ARGS -t $ACCT/$REPO:alpine-3.16-full-test-clang-amd64 $BASEDIR/alpine/3.16/test
+	if test $toolchain != "false"; then
+		args_toolchain $toolchain $dist_name $dist_version
+		if test $? -ne 0; then return 1; fi
+	fi
 
-#
-# Pushed images
-#
+	if test $mode = "test"; then
+		cmd=$(which echo)
+	else
+		cmd=$(which docker)
+	fi
 
-docker push $ACCT/$REPO:alpine-3.16-base-built-gcc-amd64
-docker push $ACCT/$REPO:alpine-3.16-base-built-clang-amd64
+	# Intermediate stage build; usually cached from prior iteration.
+	tag="$ctor_acct/$ctor_repo:${distro}-${feature}-${machine}"
+	arg="$args -t $tag $BASEDIR/${dist_name}/${feature}"
+	eval "$cmd build $arg"
+	if test $? -ne 0; then return 1; fi
+	if test $stage = $feature; then return 0; fi
+	if test $toolchain = "false"; then return 0; fi
 
-docker push $ACCT/$REPO:alpine-3.16-full-built-gcc-amd64
-docker push $ACCT/$REPO:alpine-3.16-full-built-clang-amd64
+	# Leaf build; unique to each iteration.
+	tag="$ctor_acct/$ctor_repo:${distro}-${feature}-built-${toolchain}-${machine}"
+	arg="$args --no-cache -t $tag $BASEDIR/${dist_name}/built"
+	eval "$cmd build $arg"
+	if test $? -ne 0; then return 1; fi
+	if test $stage = "built"; then return 0; fi
 
-###############################################################################
-#
-# Ubuntu 22.04
-#
+	# Test built;
+	arg="$args $BASEDIR/${dist_name}/test"
+	eval "$cmd build $arg"
+	if test $? -ne 0; then return 1; fi
+	if test $stage = "test"; then return 0; fi
 
-#
-# L0 - Base featured image
-#
+	# Push built
+	eval "$cmd push $tag"
+	if test $? -ne 0; then return 1; fi
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-amd64 $BASEDIR/ubuntu/22.04/base
+	return 0
+}
 
-#
-# L1 - Fully featured image
-#
+args_dist()
+{
+	case $1 in
+	alpine)
+		case $2 in
+		3.16)
+			args="$args --build-arg rocksdb_version=7.2.2"
+			return 0
+			;;
+		3.17)
+			args="$args --build-arg rocksdb_version=7.7.3"
+			return 0
+			;;
+		esac
+		;;
+	ubuntu)
+		case $2 in
+		22.04)
+			args="$args --build-arg rocksdb_version=7.4.3"
+			args="$args --build-arg boost_version=1.74"
+			args="$args --build-arg icu_version=70"
+			return 0
+			;;
+		22.10)
+			args="$args --build-arg rocksdb_version=7.10.2"
+			args="$args --build-arg boost_version=1.74"
+			args="$args --build-arg icu_version=71"
+			return 0
+			;;
+		esac
+		;;
+	esac
+	return 1
+}
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-full-amd64 $BASEDIR/ubuntu/22.04/full
+args_toolchain()
+{
+	_name=$(echo $1 | cut -d"-" -f1)
+	_epoch=$(echo $1 | cut -d"-" -f2)
 
-#
-# L2/L3 - Build/Built/Test
-#
+	case $2 in
+	alpine)
+		toolchain=$_name
+		case $1 in
+		gcc*)
+			extra_dev="gcc"
+			extra_dev="${extra_dev} g++"
+			args="$args --build-arg extra_packages_dev=\"${extra_dev}\""
+			args="$args --build-arg cc=gcc --build-arg cxx=g++"
+			return 0
+			;;
+		clang*)
+			extra_dev="clang"
+			extra_dev="${extra_dev} llvm"
+			extra_dev="${extra_dev} llvm-dev"
+			args="$args --build-arg extra_packages_dev=\"${extra_dev}\""
+			args="$args --build-arg cc=clang --build-arg cxx=clang++"
+			test $3 != "3.16"
+			return $?
+			;;
+		esac
+		;;
+	ubuntu)
+		case $1 in
+		gcc*)
+			extra_dev="gcc-${_epoch}"
+			extra_dev="${extra_dev} g++-${_epoch}"
+			args="$args --build-arg extra_packages_dev=\"${extra_dev}\""
+			args="$args --build-arg cc=gcc-${_epoch} --build-arg cxx=g++-${_epoch}"
+			return 0
+			;;
+		clang*)
+			if test "$_epoch" -ge 15; then
+				extra="mesa-opencl-icd"
+				extra="${extra} ocl-icd-opencl-dev"
+				extra="${extra} libclc-${_epoch}-dev"
+				args="$args --build-arg extra_packages=\"${extra}\""
+			fi
+			extra_dev="clang-${_epoch}"
+			extra_dev="${extra_dev} llvm-${_epoch}"
+			extra_dev="${extra_dev} llvm-spirv-${_epoch}"
+			extra_dev="${extra_dev} libclc-${_epoch}-dev"
+			args="$args --build-arg extra_packages_dev=\"${extra_dev}\""
+			args="$args --build-arg cc=clang-${_epoch} --build-arg cxx=clang++-${_epoch}"
+			return 0
+			;;
+		esac
+		;;
+	esac
+	return 1
+}
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=base"
-ARGS="$ARGS --build-arg extra_packages_dev=gcc-9"
-ARGS="$ARGS --build-arg extra_packages_dev1=g++-9"
-ARGS="$ARGS --build-arg cc=gcc-9 --build-arg cxx=g++-9"
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-build-gcc-9-amd64 $BASEDIR/ubuntu/22.04/build
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-built-gcc-9-amd64 $BASEDIR/ubuntu/22.04/built
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-test-gcc-9-amd64 $BASEDIR/ubuntu/22.04/test
+args_machine()
+{
+	case $1 in
+	amd64)
+		args="$args --build-arg machine_spec=arch=amdfam10"
+		;;
+	amd64-avx)
+		args="$args --build-arg machine_spec=arch=sandybridge"
+		args="$args --build-arg rocksdb_avx=1"
+		;;
+	amd64-avx2)
+		args="$args --build-arg machine_spec=arch=haswell"
+		args="$args --build-arg rocksdb_avx2=1"
+		;;
+	amd64-avx512)
+		args="$args --build-arg machine_spec=arch=skylake-avx512"
+		args="$args --build-arg rocksdb_avx2=1"
+		;;
+	esac
+	return 0
+}
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=base"
-ARGS="$ARGS --build-arg extra_packages_dev=gcc-12"
-ARGS="$ARGS --build-arg extra_packages_dev1=g++-12"
-ARGS="$ARGS --build-arg cc=gcc-12 --build-arg cxx=g++-12"
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-build-gcc-12-amd64 $BASEDIR/ubuntu/22.04/build
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-built-gcc-12-amd64 $BASEDIR/ubuntu/22.04/built
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-base-test-gcc-12-amd64 $BASEDIR/ubuntu/22.04/test
+args_platform()
+{
+	case $1 in
+	amd64*)
+		args="$args --platform linux/amd64"
+		test $(uname -m) = "x86_64"
+		return $?
+		;;
+	arm64*)
+		args="$args --platform linux/arm64"
+		test $(uname -m) = "aarch64"
+		return $?
+		;;
+	esac
+	return 1
+}
 
-ARGS="$ARGS_"
-ARGS="$ARGS --platform linux/amd64"
-ARGS="$ARGS --build-arg feature=full"
-ARGS="$ARGS --build-arg extra_packages_dev=clang-15"
-ARGS="$ARGS --build-arg extra_packages_dev1=llvm-15-dev"
-ARGS="$ARGS --build-arg extra_packages_dev2=llvm-spirv-15"
-ARGS="$ARGS --build-arg cc=clang-15 --build-arg cxx=clang++-15"
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-full-build-clang-15-amd64 $BASEDIR/ubuntu/22.04/build
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-full-built-clang-15-amd64 $BASEDIR/ubuntu/22.04/built
-docker build $ARGS -t $ACCT/$REPO:ubuntu-22.04-full-test-clang-15-amd64 $BASEDIR/ubuntu/22.04/test
-
-#
-# Pushed images
-#
-
-docker push $ACCT/$REPO:ubuntu-22.04-base-build-gcc-9-amd64
-docker push $ACCT/$REPO:ubuntu-22.04-base-built-gcc-9-amd64
-
-docker push $ACCT/$REPO:ubuntu-22.04-base-build-gcc-12-amd64
-docker push $ACCT/$REPO:ubuntu-22.04-base-built-gcc-12-amd64
-
-docker push $ACCT/$REPO:ubuntu-22.04-full-build-clang-15-amd64
-docker push $ACCT/$REPO:ubuntu-22.04-full-built-clang-15-amd64
-
-###############################################################################
-#
-# Ubuntu 20.04
-#
-
-#docker build -t $ACCT/$REPO:ubuntu-20.04 $BASEDIR/ubuntu/20.04/base
-#docker build -t $ACCT/$REPO:ubuntu-20.04-gcc-8 $BASEDIR/ubuntu/20.04/gcc-8
-#docker build -t $ACCT/$REPO:ubuntu-20.04-gcc-9 $BASEDIR/ubuntu/20.04/gcc-9
-#docker build -t $ACCT/$REPO:ubuntu-20.04-gcc-10 $BASEDIR/ubuntu/20.04/gcc-10
-#docker build -t $ACCT/$REPO:ubuntu-20.04-clang-9 $BASEDIR/ubuntu/20.04/clang-9
-#docker build -t $ACCT/$REPO:ubuntu-20.04-clang-10 $BASEDIR/ubuntu/20.04/clang-10
-#docker build -t $ACCT/$REPO:ubuntu-20.04-clang-11 $BASEDIR/ubuntu/20.04/clang-11
-#docker build -t $ACCT/$REPO:ubuntu-20.04-clang-12 $BASEDIR/ubuntu/20.04/clang-12
-
-#docker push $ACCT/$REPO:ubuntu-20.04-gcc-8
-#docker push $ACCT/$REPO:ubuntu-20.04-gcc-9
-#docker push $ACCT/$REPO:ubuntu-20.04-gcc-10
-#docker push $ACCT/$REPO:ubuntu-20.04-clang-9
-#docker push $ACCT/$REPO:ubuntu-20.04-clang-10
-#docker push $ACCT/$REPO:ubuntu-20.04-clang-11
-#docker push $ACCT/$REPO:ubuntu-20.04-clang-12
+matrix

docker/ubuntu/20.04/base/Dockerfile

@@ -1,60 +0,0 @@
-FROM ubuntu:20.04
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN \
-    apt-get update && \
-    apt-get install --no-install-recommends -y software-properties-common && \
-    apt-get update && \
-    apt-get install --no-install-recommends -y \
-        autoconf \
-        autoconf-archive \
-        autoconf2.13 \
-        automake \
-        autotools-dev \
-        boost1.71 \
-        build-essential \
-        cmake \
-        curl \
-        git \
-        libbz2-dev \
-        liblz4-dev \
-        libgraphicsmagick1-dev \
-        libicu-dev \
-        libjemalloc-dev \
-        libmagic-dev \
-        libnss-db \
-        libsodium-dev \
-        libssl-dev \
-        libtool \
-        libzstd-dev \
-        shtool \
-        xz-utils && \
-    apt-get purge -y software-properties-common && \
-    apt-get clean && \
-    apt-get autoremove --purge -y && \
-    rm -rf /var/lib/apt/lists/*
-
-ENV ROCKSDB_VERSION=6.6.4
-
-RUN \
-    cd /usr/src && \
-    curl -sL https://github.com/facebook/rocksdb/archive/v${ROCKSDB_VERSION}.tar.gz -o rocksdb-${ROCKSDB_VERSION}.tar.gz && \
-    tar xfvz rocksdb-${ROCKSDB_VERSION}.tar.gz && \
-    rm rocksdb-${ROCKSDB_VERSION}.tar.gz && \
-    ln -s /usr/src/rocksdb-${ROCKSDB_VERSION} /usr/src/rocksdb && \
-    cd /usr/src/rocksdb-${ROCKSDB_VERSION} && \
-    CFLAGS="-g0" \
-    cmake -H. -Bbuild \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DWITH_TESTS=0 \
-        -DWITH_TOOLS=0 \
-        -DUSE_RTTI=1 \
-        -DWITH_LZ4=1 \
-        -DWITH_GFLAGS=0 \
-        -DBUILD_SHARED_LIBS=1 && \
-    cmake --build build --target install && \
-    rm -rf build
-
-RUN mkdir /build
-WORKDIR /build

docker/ubuntu/20.04/clang-10/Dockerfile

@@ -1,10 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CC clang-10
-ENV CXX clang++-10
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y clang-10 llvm-10-dev \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*
-

docker/ubuntu/20.04/clang-11/Dockerfile

@@ -1,10 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CC clang-11
-ENV CXX clang++-11
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y clang-11 llvm-11-dev \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*
-

docker/ubuntu/20.04/clang-12/Dockerfile

@@ -1,10 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CC clang-12
-ENV CXX clang++-12
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y clang-12 llvm-12-dev \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*
-

docker/ubuntu/20.04/clang-9/Dockerfile

@@ -1,10 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CC clang-9
-ENV CXX clang++-9
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y clang-9 llvm-9-dev \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*
-

docker/ubuntu/20.04/gcc-10/Dockerfile

@@ -1,11 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CXX g++-10
-ENV CC gcc-10
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y software-properties-common \
-   && apt-get update \
-   && apt-get install --no-install-recommends -y g++-10 gcc-10 \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*

docker/ubuntu/20.04/gcc-8/Dockerfile

@@ -1,9 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CXX g++-8
-ENV CC gcc-8
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y g++-8 gcc-8 \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*

docker/ubuntu/20.04/gcc-9/Dockerfile

@@ -1,11 +0,0 @@
-FROM jevolk/construct:ubuntu-20.04
-
-ENV CXX g++-9
-ENV CC gcc-9
-
-RUN apt-get update \
-   && apt-get install --no-install-recommends -y software-properties-common \
-   && apt-get update \
-   && apt-get install --no-install-recommends -y g++-9 gcc-9 \
-   && apt-get clean -y \
-   && rm -rf /var/lib/apt/lists/*

docker/ubuntu/22.04/build/Dockerfile

@@ -1,35 +0,0 @@
-ARG acct
-ARG repo
-ARG feature
-
-FROM ${acct}/${repo}:ubuntu-22.04-${feature}-${TARGETARCH}
-
-ARG cc
-ARG cxx
-ARG extra_packages_dev
-ARG extra_packages_dev1
-ARG extra_packages_dev2
-ARG ctor_url https://github.com/matrix-construct/construct
-
-ENV CC ${cc}
-ENV CXX ${cxx}
-ENV ctor_url ${ctor_url}
-
-ENV packages_dev="\
-${packages_dev} \
-autoconf \
-autoconf-archive \
-autoconf2.13 \
-automake \
-autotools-dev \
-libtool \
-shtool \
-${extra_packages_dev} \
-${extra_packages_dev1} \
-${extra_packages_dev2} \
-"
-
-RUN true \
-&& eval ${do_install} ${packages_dev} \
-&& eval ${do_clean} \
-&& true

docker/ubuntu/22.04/test/Dockerfile

@@ -1,11 +0,0 @@
-ARG acct
-ARG repo
-ARG feature
-ARG cc
-
-FROM ${acct}/${repo}:ubuntu-22.04-${feature}-built-${cc}-${TARGETARCH}
-
-WORKDIR /root
-RUN true \
-&& construct -debug -smoketest localhost \
-&& true

docker/ubuntu/base/Dockerfile

@@ -1,22 +1,35 @@
-FROM ubuntu:22.04
+ARG dist_name ubuntu
+ARG dist_version 22.04
+
+FROM --platform=$TARGETPLATFORM ${dist_name}:${dist_version}
 
 ARG skiprocks
 ARG rocksdb_version 7.4.5
 ARG rocksdb_url
+ARG rocksdb_avx 0
+ARG rocksdb_avx2 0
+ARG boost_version 1.74
+ARG icu_version 70
+ARG nprocs 1
 
 ENV rocksdb_version ${rocksdb_version}
 ENV rocksdb_url https://codeload.github.com/facebook/rocksdb/tar.gz/refs/tags/v${rocksdb_version}
+ENV rocksdb_avx ${rocksdb_avx}
+ENV rocksdb_avx2 ${rocksdb_avx2}
+ENV boost_version ${boost_version}
+ENV icu_version ${icu_version}
+ENV nprocs ${nprocs}
 
 ENV packages="\
 ca-certificates \
 libatomic1 \
 libjemalloc2 \
-libboost-chrono1.74 \
-libboost-context1.74 \
-libboost-coroutine1.74 \
-libboost-system1.74 \
-libboost-thread1.74 \
-libicu70 \
+libboost-chrono${boost_version}.0 \
+libboost-context${boost_version}.0 \
+libboost-coroutine${boost_version}.0 \
+libboost-system${boost_version}.0 \
+libboost-thread${boost_version}.0 \
+libicu${icu_version} \
 libnss-db \
 libsodium23 \
 libssl3 \
@@ -28,8 +41,6 @@ libzstd1 \
 ENV packages_rocksdb_dev="\
 build-essential \
 cmake \
-curl \
-git \
 libjemalloc-dev \
 liblz4-dev \
 libzstd-dev \
@@ -38,11 +49,11 @@ xz-utils \
 
 ENV packages_dev="\
 ${packages_rocksdb_dev} \
-libboost-chrono1.74-dev \
-libboost-context1.74-dev \
-libboost-coroutine1.74-dev \
-libboost-system1.74-dev \
-libboost-thread1.74-dev \
+libboost-chrono${boost_version}-dev \
+libboost-context${boost_version}-dev \
+libboost-coroutine${boost_version}-dev \
+libboost-system${boost_version}-dev \
+libboost-thread${boost_version}-dev \
 libicu-dev \
 libmagic-dev \
 libsodium-dev \
@@ -52,19 +63,24 @@ libssl-dev \
 ENV rocksdb_cmake="\
 -DCMAKE_RULE_MESSAGES:BOOL=OFF \
 -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
+-DCMAKE_BUILD_TYPE=Release \
+-DBUILD_SHARED_LIBS=1 \
+-DFAIL_ON_WARNINGS=0 \
+-DUSE_RTTI=1 \
+-DPORTABLE=1 \
+-DFORCE_AVX=${rocksdb_avx} \
+-DFORCE_AVX2=${rocksdb_avx2} \
 -DWITH_JNI=0 \
 -DWITH_TESTS=0 \
 -DWITH_BENCHMARK_TOOLS=0 \
+-DWITH_TRACE_TOOLS=0 \
 -DWITH_CORE_TOOLS=0 \
--DFAIL_ON_WARNINGS=0 \
--DCMAKE_BUILD_TYPE=Release \
+-DWITH_TOOLS=0 \
 -DWITH_GFLAGS=0 \
 -DWITH_LIBURING=0 \
 -DWITH_JEMALLOC=1 \
 -DWITH_LZ4=1 \
 -DWITH_ZSTD=1 \
--DUSE_RTTI=1 \
--DBUILD_SHARED_LIBS=1 \
 "
 
 ENV do_install true \
@@ -83,6 +99,17 @@ ENV do_clean true \
 && rm -rf /var/lib/apt/lists/* \
 && true
 
+ENV do_fetch_rocksdb true \
+&& eval ${do_install} curl \
+&& cd /usr/src \
+&& curl -sL ${rocksdb_url} -o rocksdb-${rocksdb_version}.tar.gz \
+&& tar xfz rocksdb-${rocksdb_version}.tar.gz \
+&& rm rocksdb-${rocksdb_version}.tar.gz \
+&& mv /usr/src/rocksdb-${rocksdb_version} /usr/src/rocksdb \
+&& cd - \
+&& eval ${do_purge} curl \
+&& true
+
 RUN true \
 && eval ${do_install} ${packages} \
 && update-ca-certificates \
@@ -96,18 +123,15 @@ RUN true \
 	exit 0; \
 fi \
 && eval ${do_install} ${packages_rocksdb_dev} \
-&& cd /usr/src \
-&& curl -sL ${rocksdb_url} -o rocksdb-${rocksdb_version}.tar.gz \
-&& tar xfvz rocksdb-${rocksdb_version}.tar.gz \
-&& rm rocksdb-${rocksdb_version}.tar.gz \
-&& ln -s /usr/src/rocksdb-${rocksdb_version} /usr/src/rocksdb \
-&& cd /usr/src/rocksdb-${rocksdb_version} \
+&& eval ${do_fetch_rocksdb} \
+&& cd /usr/src/rocksdb \
 && \
 CFLAGS="-g0 -ftls-model=initial-exec" \
 LDFLAGS="-Wl,--strip-all" \
 cmake -H. -Bbuild ${rocksdb_cmake} \
-&& cmake --build build --target install --parallel `nproc` \
-&& rm -rf build \
+&& cmake --build build --target install --parallel ${nprocs} \
+&& rm -rf /usr/lib/$(uname -m)-linux-gnu/librocksdb.a \
+&& rm -rf /usr/src/rocksdb \
 && eval ${do_purge} ${packages_rocksdb_dev} \
 && eval ${do_clean} \
 && true

docker/ubuntu/built/Dockerfile

@@ -1,19 +1,24 @@
 ARG acct
 ARG repo
+ARG dist_name
+ARG dist_version
 ARG feature
+ARG machine
 
-FROM ${acct}/${repo}:ubuntu-22.04-${feature}-${TARGETARCH}
+FROM ${acct}/${repo}:${dist_name}-${dist_version}-${feature}-${machine}
 
 ARG cc
 ARG cxx
 ARG extra_packages_dev
-ARG extra_packages_dev1
-ARG extra_packages_dev2
 ARG ctor_url https://github.com/matrix-construct/construct
+ARG machine_spec
+ARG nprocs
 
 ENV CC ${cc}
 ENV CXX ${cxx}
 ENV ctor_url ${ctor_url}
+ENV machine_spec ${machine_spec}
+ENV nprocs ${nprocs}
 
 ENV packages_dev="\
 ${packages_dev} \
@@ -22,26 +27,26 @@ autoconf-archive \
 autoconf2.13 \
 automake \
 autotools-dev \
+git \
 libtool \
 shtool \
 ${extra_packages_dev} \
-${extra_packages_dev1} \
-${extra_packages_dev2} \
 "
 
 RUN true \
 && eval ${do_install} ${packages_dev} \
+&& eval ${do_fetch_rocksdb} \
 && git clone ${ctor_url} construct \
 && cd construct \
 && rmdir -v deps/rocksdb \
 && ln -sv /usr/src/rocksdb deps \
 && ./autogen.sh \
-&& ./configure \
-&& make -j `nproc` \
+&& (./configure --enable-generic --with-machine="${machine_spec}" || (cat config.log; exit 1)) \
+&& make -j ${nprocs} \
 && make install \
 && cd .. \
 && rm -rf construct \
-&& rm -rf /usr/src/rocksdb* \
+&& rm -rf /usr/src/rocksdb \
 && eval ${do_purge} ${packages_dev} \
 && eval ${do_clean} \
 && true

docker/ubuntu/full/Dockerfile

@@ -1,13 +1,17 @@
 ARG acct
 ARG repo
+ARG dist_name
+ARG dist_version
+ARG machine
 
-FROM ${acct}/${repo}:ubuntu-22.04-base-${TARGETARCH}
+FROM ${acct}/${repo}:${dist_name}-${dist_version}-base-${machine}
+
+ARG extra_packages
 
 ENV packages="\
 libgraphicsmagick-q16-3 \
 libpng16-16 \
-mesa-opencl-icd \
-ocl-icd-opencl-dev \
+${extra_packages} \
 "
 
 ENV packages_dev="\

docker/ubuntu/test/Dockerfile

@@ -0,0 +1,14 @@
+ARG acct
+ARG repo
+ARG dist_name
+ARG dist_version
+ARG feature
+ARG cc
+ARG machine
+
+FROM ${acct}/${repo}:${dist_name}-${dist_version}-${feature}-built-${cc}-${machine}
+
+WORKDIR /root
+RUN true \
+&& construct -debug -smoketest localhost \
+&& true

include/ircd/asio.h

@@ -74,7 +74,7 @@ namespace boost
 
 // In boost 1.79+ asio implements some filesystem operations we can use. While
 // these are available in 1.78 they were buggy for our purposes until 1.79.
-#if BOOST_VERSION >= 107900
+#if IRCD_USE_ASIO_IO_URING && BOOST_VERSION >= 107900
 #define IRCD_USE_ASIO_READ 1
 #define IRCD_USE_ASIO_WRITE 1
 #else

include/ircd/b64.h

@@ -44,8 +44,8 @@ namespace ircd::b64
 	size_t encode_unpadded_size(const const_buffer &in) noexcept;
 
 	const_buffer decode(const mutable_buffer out, const string_view in);
-	string_view encode_unpadded(const mutable_buffer out, const const_buffer in, const dictionary & = dict_rfc1421) noexcept;
-	string_view encode(const mutable_buffer out, const const_buffer in, const dictionary & = dict_rfc1421) noexcept;
+	string_view encode_unpadded(const mutable_buffer out, const const_buffer in, const dictionary = dict_rfc1421) noexcept;
+	string_view encode(const mutable_buffer out, const const_buffer in, const dictionary = dict_rfc1421) noexcept;
 }
 
 inline size_t

include/ircd/buffer/unique_buffer.h

@@ -32,6 +32,7 @@ struct ircd::buffer::unique_buffer
 	unique_buffer() = default;
 	unique_buffer(const size_t &size, const size_t &align = 0);
 	explicit unique_buffer(const const_buffer &);
+	template<class T> unique_buffer(unique_buffer<T> &&) noexcept;
 	unique_buffer(unique_buffer &&) noexcept;
 	unique_buffer(const unique_buffer &) = delete;
 	unique_buffer &operator=(unique_buffer &&) & noexcept;
@@ -71,6 +72,19 @@ ircd::buffer::unique_buffer<buffer_type>::unique_buffer(const size_t &size,
 }
 {}
 
+template<class buffer_type>
+template<class other_type>
+inline
+ircd::buffer::unique_buffer<buffer_type>::unique_buffer(unique_buffer<other_type> &&other)
+noexcept
+:buffer_type
+{
+	other.release()
+}
+{
+	assert(std::get<0>(other) == nullptr);
+}
+
 template<class buffer_type>
 inline
 ircd::buffer::unique_buffer<buffer_type>::unique_buffer(unique_buffer &&other)

include/ircd/client.h

@@ -56,7 +56,9 @@ struct ircd::client
 	size_t write_all(const net::const_buffers &);
 	size_t write_all(const const_buffer &);
 	void close(const net::close_opts &, net::close_callback);
-	ctx::future<void> close(const net::close_opts & = {});
+	void close(const net::dc, net::close_callback);
+	ctx::future<void> close(const net::close_opts &);
+	ctx::future<void> close(const net::dc);
 
   private:
 	void discard_unconsumed(const http::request::head &);

include/ircd/ctx/future.h

@@ -46,6 +46,8 @@ struct ircd::ctx::future
 
 	bool valid() const                           { return !is(state(), future_state::INVALID);     }
 	bool operator!() const                       { return !valid();                                }
+	std::exception_ptr eptr() const              { return state().eptr;                            }
+	string_view what() const                     { return util::what(eptr());                      }
 	explicit operator T()                        { return get();                                   }
 
 	template<class U, class time_point> friend bool wait_until(const future<U> &, const time_point &, std::nothrow_t);
@@ -75,6 +77,8 @@ struct ircd::ctx::future<void>
 
 	bool valid() const                           { return !is(state(), future_state::INVALID);     }
 	bool operator!() const                       { return !valid();                                }
+	std::exception_ptr eptr() const              { return state().eptr;                            }
+	string_view what() const                     { return util::what(eptr());                      }
 
 	template<class U, class time_point> friend bool wait_until(const future<U> &, const time_point &, std::nothrow_t);
 	template<class U, class time_point> friend void wait_until(const future<U> &, const time_point &);

include/ircd/db/column.h

@@ -38,9 +38,9 @@ namespace ircd::db
 	template<> prop_map property(const column &, const string_view &name);
 
 	// Access to the column's caches (see cache.h interface)
-	const rocksdb::Cache *cache_compressed(const column &);
+	[[gnu::deprecated]] const rocksdb::Cache *cache_compressed(const column &);
 	const rocksdb::Cache *cache(const column &);
-	rocksdb::Cache *cache_compressed(column &);
+	[[gnu::deprecated]] rocksdb::Cache *cache_compressed(column &);
 	rocksdb::Cache *cache(column &);
 
 	// [GET] Tests if key exists

include/ircd/db/database.h

@@ -18,9 +18,16 @@ namespace ircd::db
 	// Broad conf items
 	extern conf::item<std::string> open_recover;
 	extern conf::item<bool> open_repair;
-	extern conf::item<bool> open_slave;
 	extern conf::item<bool> auto_compact;
 	extern conf::item<bool> auto_deletion;
+	extern conf::item<bool> open_stats;
+	extern conf::item<bool> paranoid;
+	extern conf::item<bool> paranoid_checks;
+	extern conf::item<bool> paranoid_size;
+	extern conf::item<bool> paranoid_uuid;
+	extern conf::item<bool> paranoid_wal;
+	extern conf::item<bool> paranoid_sst;
+	extern conf::item<bool> paranoid_lsm;
 
 	// General information
 	const std::string &name(const database &);

include/ircd/db/domain.h

@@ -102,3 +102,11 @@ const
 {
 	return &this->operator*();
 }
+
+inline bool
+ircd::db::seek(domain::const_iterator_base &it,
+               const string_view &p)
+{
+	it.opts.prefix = true;
+	return seek(static_cast<column::const_iterator_base &>(it), p);
+}

include/ircd/fs/dev.h

@@ -14,9 +14,9 @@
 namespace ircd::fs::dev
 {
 	struct blk;
+	struct stats;
 
 	using major_minor = std::pair<ulong, ulong>;
-	using blk_closure = std::function<bool (const ulong &id, const blk &)>;
 
 	// Convert device ID's with the major(3) / minor(3) / makedev(3)
 	ulong id(const major_minor &);
@@ -36,13 +36,12 @@ namespace ircd::fs::dev
 	sysfs(const ulong &id,
 	      const string_view &path,
 	      const R &def = 0);
-
-	bool for_each(const string_view &devtype, const blk_closure &);
-	bool for_each(const blk_closure &);
 }
 
 struct ircd::fs::dev::blk
 {
+	using closure = util::function_bool<const ulong &, const blk &>;
+
 	static const size_t SECTOR_SIZE;
 	static const string_view BASE_PATH;
 
@@ -66,6 +65,47 @@ struct ircd::fs::dev::blk
 
 	blk(const ulong &id);
 	blk() = default;
+
+	static bool for_each(const string_view &devtype, const closure &);
+	static bool for_each(const closure &);
+};
+
+struct ircd::fs::dev::stats
+{
+	using closure = util::function_bool<const stats &>;
+
+	char name[32] {0};
+	major_minor id {0, 0};
+
+	uint64_t read {0};
+	uint64_t read_merged {0};
+	uint64_t read_sectors {0};
+	milliseconds read_time {0ms};
+
+	uint64_t write {0};
+	uint64_t write_merged {0};
+	uint64_t write_sectors {0};
+	milliseconds write_time {0ms};
+
+	uint64_t io_current {0};
+	milliseconds io_time {0ms};
+	milliseconds io_weighted_time {0ms};
+
+	// 4.18+
+	uint64_t discard {0};
+	uint64_t discard_merged {0};
+	uint64_t discard_sectors {0};
+	milliseconds discard_time {0ms};
+
+	// 5.5+
+	uint64_t flush {0};
+	milliseconds flush_time {0ms};
+
+	stats(const string_view &line);
+	stats() = default;
+
+	static bool for_each(const closure &);
+	static stats get(const major_minor &id);
 };
 
 /// Return a lex_cast'able (an integer) from a sysfs target.

include/ircd/info.h

@@ -124,7 +124,7 @@ namespace ircd::info::hardware::x86
 	extern const string_view vendor;
 	extern const bool sse, sse2, sse3, ssse3, sse4a, sse4_1, sse4_2;
 	extern const bool avx, avx2, avx512f;
-	extern const bool tsc, tsc_constant;
+	extern const bool tsc, tsc_constant, tsc_nonstop;
 }
 
 namespace ircd::info::hardware::arm

include/ircd/ios/descriptor.h

@@ -29,14 +29,14 @@ struct ircd::ios::descriptor
 
 	static uint64_t ids;
 
-	static void *default_allocator(handler &, const size_t &);
-	static void default_deallocator(handler &, void *const &, const size_t &) noexcept;
+	static void *default_allocator(handler &, const size_t);
+	static void default_deallocator(handler &, void *, const size_t) noexcept;
 
 	string_view name;
 	uint64_t id {++ids};
 	std::unique_ptr<struct stats> stats;
-	void *(*allocator)(handler &, const size_t &);
-	void (*deallocator)(handler &, void *const &, const size_t &);
+	void *(*allocator)(handler &, const size_t);
+	void (*deallocator)(handler &, void *, const size_t);
 	std::vector<std::array<uint64_t, 2>> history; // epoch, cycles
 	uint8_t history_pos {0};
 	bool continuation {false};
@@ -72,10 +72,10 @@ struct ircd::ios::descriptor::stats
 	item alloc_bytes;
 	item frees;
 	item free_bytes;
-	item slice_total;
 	item slice_last;
-	item latency_total;
+	item slice_total;
 	item latency_last;
+	item latency_total;
 
 	stats(descriptor &);
 	stats() = delete;
@@ -87,8 +87,8 @@ struct ircd::ios::descriptor::stats
 [[gnu::hot]]
 inline void
 ircd::ios::descriptor::default_deallocator(handler &handler,
-                                           void *const &ptr,
-                                           const size_t &size)
+                                           void *const ptr,
+                                           const size_t size)
 noexcept
 {
 	#ifdef __clang__
@@ -101,7 +101,7 @@ noexcept
 [[gnu::hot]]
 inline void *
 ircd::ios::descriptor::default_allocator(handler &handler,
-                                         const size_t &size)
+                                         const size_t size)
 {
 	return ::operator new(size);
 }

include/ircd/ios/handler.h

@@ -28,13 +28,13 @@ struct ircd::ios::handler
 	static thread_local handler *current;
 	static thread_local uint64_t epoch;
 
-	static void enqueue(handler *const &) noexcept;
-	static void *allocate(handler *const &, const size_t &);
-	static void deallocate(handler *const &, void *const &, const size_t &) noexcept;
-	static bool continuation(handler *const &) noexcept;
-	static void enter(handler *const &) noexcept;
-	static void leave(handler *const &) noexcept;
-	static bool fault(handler *const &) noexcept;
+	static void enqueue(handler *) noexcept;
+	static void *allocate(handler *, const size_t);
+	static void deallocate(handler *, void *, const size_t) noexcept;
+	static bool continuation(handler *) noexcept;
+	static void enter(handler *) noexcept;
+	static void leave(handler *) noexcept;
+	static bool fault(handler *) noexcept;
 
 	ios::descriptor *descriptor {nullptr};
 	uint64_t ts {0}; // last tsc sample; for profiling each phase
@@ -91,9 +91,9 @@ const
 
 [[gnu::hot]]
 inline void
-ircd::ios::handler::deallocate(handler *const &handler,
-                               void *const &ptr,
-                               const size_t &size)
+ircd::ios::handler::deallocate(handler *const handler,
+                               void *const ptr,
+                               const size_t size)
 noexcept
 {
 	assert(handler && handler->descriptor);
@@ -110,8 +110,8 @@ noexcept
 
 [[gnu::hot]]
 inline void *
-ircd::ios::handler::allocate(handler *const &handler,
-                             const size_t &size)
+ircd::ios::handler::allocate(handler *const handler,
+                             const size_t size)
 {
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);
@@ -127,7 +127,7 @@ ircd::ios::handler::allocate(handler *const &handler,
 
 [[gnu::hot]]
 inline void
-ircd::ios::handler::enqueue(handler *const &handler)
+ircd::ios::handler::enqueue(handler *const handler)
 noexcept
 {
 	assert(handler && handler->descriptor);
@@ -152,7 +152,7 @@ noexcept
 
 [[gnu::hot]]
 inline bool
-ircd::ios::handler::continuation(handler *const &handler)
+ircd::ios::handler::continuation(handler *const handler)
 noexcept
 {
 	assert(handler && handler->descriptor);

include/ircd/ios/ios.h

@@ -30,6 +30,7 @@ namespace ircd::ios
 	extern asio::executor user, main;
 	extern std::thread::id main_thread_id;
 	extern thread_local bool is_main_thread;
+	extern bool user_available, main_available;
 
 	bool available() noexcept;
 	const uint64_t &epoch() noexcept;
@@ -64,3 +65,11 @@ noexcept
 {
 	return handler::epoch;
 }
+
+inline bool
+__attribute__((always_inline))
+ircd::ios::available()
+noexcept
+{
+	return main_available;
+}

include/ircd/ircd.h

@@ -107,6 +107,7 @@
 #include "mods/mods.h"
 #include "net/net.h"
 #include "server/server.h"
+#include "rest.h"
 #include "png.h"
 #include "beep.h"
 #include "magick.h"
@@ -129,10 +130,10 @@ namespace ircd
 
 	// Operating Mode Selectors
 	extern conf::item<bool> debugmode;
-	extern conf::item<bool> maintenance;
 	extern conf::item<bool> soft_assert;
-	extern conf::item<bool> write_avoid;     // implies maintenance
-	extern conf::item<bool> read_only;       // implies write_avoid
+	extern conf::item<bool> maintenance;
+	extern conf::item<bool> slave;
+	extern conf::item<bool> read_only;
 	extern conf::item<bool> defaults;
 }
 

include/ircd/json/json.h

@@ -39,20 +39,7 @@ namespace ircd::json
 #include "strung.h"
 #include "tuple/tuple.h"
 #include "stack/stack.h"
-
-// Convenience toolset for higher level operations.
-namespace ircd::json
-{
-	strung append(const array &, const string_view &val);
-	strung prepend(const array &, const string_view &val);
-
-	void merge(stack::object &out, const vector &);
-	strung remove(const object &, const string_view &key);
-	strung remove(const object &, const size_t &index);
-	strung insert(const object &, const member &);
-	strung replace(const object &, const member &);
-	strung replace(const object &,  const members &);
-}
+#include "tool.h"
 
 // Exports to ircd::
 namespace ircd

include/ircd/json/stack/member.h

@@ -41,6 +41,10 @@ struct ircd::json::stack::member
 	member(stack &s, const string_view &name, const json::value &);
 	template<class... T> member(object &po, const string_view &name, const json::tuple<T...> &t);
 	template<class... T> member(stack &s, const string_view &name, const json::tuple<T...> &t);
+	explicit member(object &, const json::object::member &);
+	explicit member(stack &, const json::object::member &);
+	explicit member(object &, const json::member &);
+	explicit member(stack &, const json::member &);
 	member() = default;
 	member(const member &) = delete;
 	member(member &&) noexcept;

include/ircd/json/stack/stack.h

@@ -105,28 +105,28 @@ template<>
 inline ircd::json::stack::array &
 ircd::json::stack::stack::top<ircd::json::stack::array>(stack &s)
 {
-    return array::top(s);
+	return array::top(s);
 }
 
 template<>
 inline const ircd::json::stack::array &
 ircd::json::stack::stack::top<ircd::json::stack::array>(const stack &s)
 {
-    return array::top(s);
+	return array::top(s);
 }
 
 template<>
 inline ircd::json::stack::object &
 ircd::json::stack::stack::top<ircd::json::stack::object>(stack &s)
 {
-    return object::top(s);
+	return object::top(s);
 }
 
 template<>
 inline const ircd::json::stack::object &
 ircd::json::stack::stack::top<ircd::json::stack::object>(const stack &s)
 {
-    return object::top(s);
+	return object::top(s);
 }
 
 template<>

include/ircd/json/tool.h

@@ -0,0 +1,44 @@
+// Matrix Construct
+//
+// Copyright (C) Matrix Construct Developers, Authors & Contributors
+// Copyright (C) 2016-2023 Jason Volk <jason@zemos.net>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice is present in all copies. The
+// full license for this software is available in the LICENSE file.
+
+#pragma once
+#define HAVE_IRCD_JSON_TOOL_H
+
+// Convenience toolset for higher level operations.
+namespace ircd::json
+{
+	strung append(const array &, const string_view &val);
+	strung prepend(const array &, const string_view &val);
+
+	void merge(stack::object &out, const vector &);
+
+	strung remove(const object &, const string_view &key);
+	strung remove(const object &, const size_t &index);
+
+	strung insert(const object &, const members &);
+	strung insert(const object &, const member &);
+
+	strung replace(const object &,  const members &);
+	strung replace(const object &, const member &);
+}
+
+inline ircd::json::strung
+ircd::json::replace(const object &s,
+                    const json::member &m)
+{
+	return replace(s, json::members{m});
+}
+
+inline ircd::json::strung
+ircd::json::insert(const object &s,
+                   const json::member &m)
+{
+	return insert(s, json::members{m});
+}

include/ircd/json/tuple/keys.h

@@ -60,17 +60,18 @@ template<class T>
 struct ircd::json::keys<T>::include
 :selection
 {
-	constexpr include(const vector_view<const string_view> list)
+	include(const vector_view<const string_view> &keys)
 	:selection{0}
 	{
-		for(const auto key : list)
+		for(const auto &key : keys)
 			selection::set(key, true);
 	}
 
-	constexpr include(const std::initializer_list<const string_view> list)
+	template<class... list>
+	consteval include(list&&... keys)
 	:selection{0}
 	{
-		for(const auto key : list)
+		for(auto&& key : {keys...})
 			selection::set(key, true);
 	}
 
@@ -86,17 +87,19 @@ template<class T>
 struct ircd::json::keys<T>::exclude
 :selection
 {
-	constexpr exclude(const vector_view<const string_view> list)
+	exclude(const vector_view<const string_view> &keys)
 	:selection{}
 	{
-		for(const auto key : list)
+		for(const auto &key : keys)
 			selection::set(key, false);
 	}
 
-	constexpr exclude(const std::initializer_list<const string_view> list)
+
+	template<class... list>
+	consteval exclude(list&&... keys)
 	:selection{}
 	{
-		for(const auto key : list)
+		for(auto&& key : {keys...})
 			selection::set(key, false);
 	}
 

include/ircd/json/type.h

@@ -29,26 +29,18 @@ namespace ircd::json
 	/// not use the strict overload.
 	IRCD_OVERLOAD(strict)
 
-	// Determine the type
-	enum type type(const string_view &);
-	enum type type(const string_view &, std::nothrow_t);
-	enum type type(const string_view &, strict_t);
-	enum type type(const string_view &, strict_t, std::nothrow_t);
-
-	// Query if type
-	bool type(const string_view &, const enum type &, strict_t);
-	bool type(const string_view &, const enum type &);
-
 	// Utils
-	string_view reflect(const enum type &);
+	[[gnu::pure]] string_view reflect(const enum type) noexcept;
 
-	extern const string_view literal_null;
-	extern const string_view literal_true;
-	extern const string_view literal_false;
-	extern const string_view empty_string;
-	extern const string_view empty_object;
-	extern const string_view empty_array;
-	extern const int64_t undefined_number;
+	// Determine the type w/ strict correctness (full scan)
+	[[gnu::pure]] bool type(const string_view &, const enum type, strict_t) noexcept;
+	[[gnu::pure]] enum type type(const string_view &, strict_t, std::nothrow_t) noexcept;
+	enum type type(const string_view &, strict_t);
+
+	// Determine the type quickly
+	[[gnu::pure]] bool type(const string_view &, const enum type) noexcept;
+	[[gnu::pure]] enum type type(const string_view &, std::nothrow_t) noexcept;
+	enum type type(const string_view &);
 }
 
 enum ircd::json::type

include/ircd/json/util.h

@@ -36,7 +36,15 @@ namespace ircd::json
 	void valid(const string_view &);
 	std::string why(const string_view &);
 
-	struct stats extern stats;
+	extern const string_view literal_null;
+	extern const string_view literal_true;
+	extern const string_view literal_false;
+	extern const string_view empty_string;
+	extern const string_view empty_object;
+	extern const string_view empty_array;
+	extern const int64_t undefined_number;
+
+	extern struct stats stats;
 }
 
 /// Statistics counter access; unfortunately these cannot participate as

include/ircd/m/device.h

@@ -53,11 +53,14 @@ struct ircd::m::signing_key_update
 	/// Required. The user ID whose cross-signing keys have changed.
 	json::property<name::user_id, json::string>,
 
-	/// Cross signing key
+	/// Master signing key
 	json::property<name::master_key, json::object>,
 
-	/// Cross signing key
-	json::property<name::self_signing_key, json::object>
+	/// Self signing key
+	json::property<name::self_signing_key, json::object>,
+
+	/// User signing key (local only)
+	json::property<name::user_signing_key, json::object>
 >
 {
 	using super_type::tuple;

include/ircd/m/event/append.h

@@ -29,6 +29,29 @@ struct ircd::m::event::append
 {
 	struct opts;
 
+  private:
+	static const event::keys::exclude exclude_keys;
+	static const event::keys default_keys;
+	static conf::item<std::string> exclude_types;
+	static conf::item<bool> info;
+	static log::log log;
+
+	bool is_ignored(const event &, const opts &) const;
+	bool is_redacted(const event &, const opts &) const;
+	bool is_invisible(const event &, const opts &) const;
+	bool is_excluded(const event &, const opts &) const;
+
+	bool bundle_replace(json::stack::object &, const event &, const opts &);
+	void _relations(json::stack::object &, const event &, const opts &);
+	void _age(json::stack::object &, const event &, const opts &);
+	void _txnid(json::stack::object &, const event &, const opts &);
+	void _prev_state(json::stack::object &, const event &, const opts &);
+	void _unsigned(json::stack::object &, const event &, const opts &);
+
+	bool members(json::stack::object &, const event &, const opts &);
+	bool object(json::stack::array &, const event &, const opts &);
+
+  public:
 	append(json::stack::object &, const event &, const opts &);
 	append(json::stack::object &, const event &);
 	append(json::stack::array &, const event &, const opts &);
@@ -39,11 +62,11 @@ struct ircd::m::event::append
 /// can provide the best result.
 struct ircd::m::event::append::opts
 {
-	const event::idx *event_idx {nullptr};
-	const string_view *client_txnid {nullptr};
-	const id::user *user_id {nullptr};
-	const room *user_room {nullptr};
-	const int64_t *room_depth {nullptr};
+	event::idx event_idx {0};
+	string_view client_txnid;
+	id::user user_id;
+	id::room user_room_id;
+	int64_t room_depth {-1L};
 	const event::keys *keys {nullptr};
 	const m::event_filter *event_filter {nullptr};
 	long age {std::numeric_limits<long>::min()};
@@ -51,6 +74,8 @@ struct ircd::m::event::append::opts
 	bool query_prev_state {true};
 	bool query_redacted {true};
 	bool query_visible {false};
+	bool bundle_all {false};
+	bool bundle_replace {false};
 };
 
 inline
@@ -64,3 +89,23 @@ ircd::m::event::append::append(json::stack::object &o,
                                const event &e)
 :append{o, e, {}}
 {}
+
+inline
+ircd::m::event::append::append(json::stack::array &array,
+                               const event &event,
+                               const opts &opts)
+:returns<bool>{[this, &array, &event, &opts]
+{
+	return object(array, event, opts);
+}}
+{}
+
+inline
+ircd::m::event::append::append(json::stack::object &object,
+                               const event &event,
+                               const opts &opts)
+:returns<bool>{[this, &object, &event, &opts]
+{
+	return members(object, event, opts);
+}}
+{}

include/ircd/m/event/event.h

@@ -41,11 +41,12 @@ namespace ircd::m
 	size_t degree(const event &);
 	bool before(const event &a, const event &b);
 
-	json::object hashes(const mutable_buffer &, const event &);
-	event signatures(const mutable_buffer &, const m::event &, const string_view &origin);
-	event signatures(const mutable_buffer &, const m::event &);
 	event essential(event, const mutable_buffer &content, const bool &sigs = false);
+	event signatures(const mutable_buffer &, const event &, const string_view &origin, const ed25519::sk &, const string_view &pkid);
+	event signatures(const mutable_buffer &, const event &, const string_view &origin);
+	event signatures(const mutable_buffer &, const event &);
 
+	json::object hashes(const mutable_buffer &, const event &);
 	bool verify_hash(const event &, const sha256::buf &);
 	bool verify_hash(const event &);
 

include/ircd/m/homeserver.h

@@ -83,6 +83,8 @@ struct ircd::m::homeserver
 	/// Factory to create homeserver with single procedure for shlib purposes.
 	static homeserver *init(const struct opts *);
 	static void fini(homeserver *) noexcept;
+	static bool rehash(homeserver *);
+	static bool refresh(homeserver *);
 };
 
 struct ircd::m::homeserver::key

include/ircd/m/keys.h

@@ -63,7 +63,8 @@ struct ircd::m::keys
 	static bool get(const queries &, const closure_bool &);
 	static bool get(const string_view &server_name, const closure &);
 	static bool get(const string_view &server_name, const string_view &key_id, const closure &);
-	static bool query(const string_view &query_server, const queries &, const closure_bool &);
+	static bool query(const string_view &remote, const queries &, const closure_bool &, const mutable_buffer &, const bool dynamic = false);
+	static bool query(const string_view &remote, const queries &, const closure_bool &);
 	static size_t fetch(const queries &);
 	static size_t fetch(const pdus &);
 

include/ircd/m/m.h

@@ -89,6 +89,7 @@ namespace ircd::m
 #include "direct_to_device.h"
 #include "visible.h"
 #include "redacted.h"
+#include "replaced.h"
 #include "feds.h"
 #include "app.h"
 #include "bridge.h"

include/ircd/m/media.h

@@ -33,7 +33,7 @@ namespace ircd::m::media::file
 	room::id::buf room_id(const mxc &);
 
 	size_t read(const room &, const closure &);
-	size_t write(const room &, const user::id &, const const_buffer &content, const string_view &content_type);
+	size_t write(const room &, const user::id &, const const_buffer &content, const string_view &content_type, const string_view &name = {});
 
 	room::id::buf
 	download(const mxc &,

include/ircd/m/name.h

@@ -221,4 +221,5 @@ struct ircd::m::name
 	static constexpr const char *const usage {"usage"};
 	static constexpr const char *const master_key {"master_key"};
 	static constexpr const char *const self_signing_key {"self_signing_key"};
+	static constexpr const char *const user_signing_key {"user_signing_key"};
 };

include/ircd/m/relates.h

@@ -44,9 +44,11 @@ struct ircd::m::relates
 		const event::idx &, const json::object &, const m::relates_to &
 	>;
 
+	static conf::item<std::string> latest_column;
+
 	event::refs refs;
 	bool match_sender {false};
-	bool prefetch_depth {false};
+	bool prefetch_latest {false};
 	bool prefetch_sender {false};
 
   private:

include/ircd/m/replaced.h

@@ -0,0 +1,80 @@
+// Matrix Construct
+//
+// Copyright (C) Matrix Construct Developers, Authors & Contributors
+// Copyright (C) 2016-2023 Jason Volk <jason@zemos.net>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice is present in all copies. The
+// full license for this software is available in the LICENSE file.
+
+#pragma once
+#define HAVE_IRCD_M_REPLACED_H
+
+namespace ircd::m
+{
+	struct replaced;
+}
+
+class ircd::m::replaced
+:public returns<event::idx>
+{
+	m::relates relates;
+
+  public:
+	IRCD_OVERLOAD(latest);
+
+	replaced(const event::idx &, latest_t);
+	replaced(const event::idx &);
+
+	replaced(const event::id &, latest_t);
+	replaced(const event::id &);
+
+	explicit replaced(const event &, latest_t);
+	explicit replaced(const event &);
+};
+
+inline
+ircd::m::replaced::replaced(const event &event)
+:replaced{event.event_id}
+{}
+
+inline
+ircd::m::replaced::replaced(const event &event,
+                            latest_t)
+:replaced{event.event_id, latest}
+{}
+
+inline
+ircd::m::replaced::replaced(const event::id &event_id)
+:replaced{index(std::nothrow, event_id)}
+{}
+
+inline
+ircd::m::replaced::replaced(const event::id &event_id,
+                            latest_t)
+:replaced{index(std::nothrow, event_id), latest}
+{}
+
+inline
+ircd::m::replaced::replaced(const event::idx &event_idx)
+:relates
+{
+	.refs = event_idx,
+	.match_sender = true,
+}
+{
+	this->returns::ret = relates.has("m.replace")? -1UL: 0UL;
+}
+
+inline
+ircd::m::replaced::replaced(const event::idx &event_idx,
+                            latest_t)
+:relates
+{
+	.refs = event_idx,
+	.match_sender = true,
+}
+{
+	this->returns::ret = relates.latest("m.replace");
+}

include/ircd/m/room/room.h

@@ -31,6 +31,7 @@ namespace ircd::m
 	bool exists(const id::room_alias &, const bool &remote = false);
 	bool internal(const id::room &);
 	bool federated(const id::room &);
+	bool type(const id::room &, const string_view &);
 	bool creator(const id::room &, const id::user &);
 	bool contains(const id::room &, const event::idx &);
 	bool membership(const room &, const id::user &, const string_view & = "join");
@@ -186,9 +187,11 @@ struct ircd::m::room
 	     const vm::copts *const &copts,
 	     const event::fetch::opts *const &fopts = nullptr) noexcept;
 
-	room(const id &room_id = {},
+	room(const id &room_id,
 	     const event::fetch::opts *const &fopts = nullptr) noexcept;
 
+	room() = default;
+
 	// Index of create event
 	static event::idx index(const id &, std::nothrow_t);
 	static event::idx index(const id &);
@@ -228,7 +231,9 @@ ircd::m::room::room(const id &room_id,
 ,event_id{event_id? event::id{event_id} : event::id{}}
 ,copts{copts}
 ,fopts{fopts}
-{}
+{
+	assert(room_id);
+}
 
 inline
 ircd::m::room::room(const id &room_id,
@@ -238,7 +243,9 @@ noexcept
 :room_id{room_id}
 ,copts{copts}
 ,fopts{fopts}
-{}
+{
+	assert(room_id);
+}
 
 inline
 ircd::m::room::room(const id &room_id,
@@ -246,7 +253,9 @@ ircd::m::room::room(const id &room_id,
 noexcept
 :room_id{room_id}
 ,fopts{fopts}
-{}
+{
+	assert(room_id);
+}
 
 inline ircd::m::room::operator
 const ircd::m::room::id &()

include/ircd/m/rooms.h

@@ -48,6 +48,9 @@ struct ircd::m::rooms::opts
 	/// Room alias prefix search
 	string_view room_alias;
 
+	/// Room type search
+	string_view room_type;
+
 	/// user::rooms convenience
 	id::user user_id;
 

include/ircd/m/user/devices.h

@@ -13,8 +13,10 @@
 
 struct ircd::m::user::devices
 {
+	struct send;
+
 	using closure = std::function<void (const event::idx &, const string_view &)>;
-	using closure_bool = std::function<bool (const event::idx &, const string_view &)>;
+	using closure_bool = util::function_bool<const event::idx &, const string_view &>;
 
 	m::user user;
 
@@ -36,9 +38,17 @@ struct ircd::m::user::devices
 	///TODO: XXX junk
 	static std::map<std::string, long> count_one_time_keys(const m::user &, const string_view &);
 	static bool update(const device_list_update &);
-	static bool send(json::iov &content);
 
 	devices(const m::user &user)
 	:user{user}
 	{}
 };
+
+/// Broadcast m.device_list_update.
+///
+struct ircd::m::user::devices::send
+{
+	send(const m::user::devices &,
+	     const m::id::device &,
+	     const string_view = {});
+};

include/ircd/m/user/keys.h

@@ -0,0 +1,128 @@
+// The Construct
+//
+// Copyright (C) The Construct Developers, Authors & Contributors
+// Copyright (C) 2016-2023 Jason Volk <jason@zemos.net>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice is present in all copies. The
+// full license for this software is available in the LICENSE file.
+
+#pragma once
+#define HAVE_IRCD_M_USER_KEYS_H
+
+struct ircd::m::user::keys
+{
+	struct send;
+
+	static string_view make_sigs_state_key(const mutable_buffer &, const string_view &tgt, const string_view &src);
+	static std::tuple<string_view, string_view> unmake_sigs_state_key(const string_view &) noexcept;
+
+	m::user::room user_room;
+
+	void attach_sigs(json::stack::object &, const json::object &, const user::id &) const;
+	bool attach_sigs(json::stack::object &, const event::idx &, const user::id &) const;
+	void append_sigs(json::stack::object &, const json::object &, const user::id &) const;
+	void append_keys(json::stack::object &, const json::object &, const user::id &) const;
+	bool append_keys(json::stack::object &, const event::idx &, const user::id &) const;
+
+  public:
+	bool has_device(const string_view &) const;
+	bool has_cross(const string_view &type) const;
+	bool has_cross_master() const;
+	bool has_cross_self() const;
+	bool has_cross_user() const;
+
+	void device(json::stack::object &, const string_view &device_id) const;
+	void cross(json::stack::object &, const string_view &type) const;
+	void cross_master(json::stack::object &) const;
+	void cross_self(json::stack::object &) const;
+	void cross_user(json::stack::object &) const;
+
+	bool claim(json::stack::object &, const string_view &device_id, const string_view &algo) const;
+	void update(const m::signing_key_update &) const;
+
+	keys(const m::user &user)
+	:user_room{user}
+	{}
+};
+
+struct ircd::m::user::keys::send
+{
+	send(const m::user::keys &,
+	     const string_view = {});
+};
+
+inline void
+ircd::m::user::keys::cross_user(json::stack::object &out)
+const
+{
+	return cross(out, "ircd.cross_signing.user");
+}
+
+inline void
+ircd::m::user::keys::cross_self(json::stack::object &out)
+const
+{
+	return cross(out, "ircd.cross_signing.self");
+}
+
+inline void
+ircd::m::user::keys::cross_master(json::stack::object &out)
+const
+{
+	return cross(out, "ircd.cross_signing.master");
+}
+
+inline void
+ircd::m::user::keys::cross(json::stack::object &out,
+                           const string_view &type)
+const
+{
+	const auto event_idx
+	{
+		user_room.get(std::nothrow, type, "")
+	};
+
+	append_keys(out, event_idx, user_room.user.user_id);
+}
+
+inline bool
+ircd::m::user::keys::has_cross_user()
+const
+{
+	return has_cross("ircd.cross_signing.user");
+}
+
+inline bool
+ircd::m::user::keys::has_cross_self()
+const
+{
+	return has_cross("ircd.cross_signing.self");
+}
+
+inline bool
+ircd::m::user::keys::has_cross_master()
+const
+{
+	return has_cross("ircd.cross_signing.master");
+}
+
+inline bool
+ircd::m::user::keys::has_cross(const string_view &type)
+const
+{
+	return user_room.has(type, "");
+}
+
+inline bool
+ircd::m::user::keys::has_device(const string_view &device_id)
+const
+{
+	const m::user::devices devices
+	{
+		user_room.user
+	};
+
+	return devices.has(device_id, "keys");
+}

include/ircd/m/user/user.h

@@ -52,6 +52,7 @@ struct ircd::m::user
 	struct tokens;
 	struct devices;
 	struct reading;
+	struct keys;
 
 	using id = m::id::user;
 	using closure = std::function<void (const user &)>;
@@ -73,13 +74,17 @@ struct ircd::m::user
 	event::id::buf deoper();
 	event::id::buf oper();
 
-	user(const id &user_id)
-	:user_id{user_id}
-	{}
-
+	user(const id &user_id);
 	user() = default;
 };
 
+inline
+ircd::m::user::user(const id &user_id)
+:user_id{user_id}
+{
+	assert(user_id);
+}
+
 inline ircd::m::user::operator
 const ircd::m::user::id &()
 const
@@ -105,3 +110,4 @@ const
 #include "tokens.h"
 #include "devices.h"
 #include "reading.h"
+#include "keys.h"

include/ircd/m/vm/notify.h

@@ -13,9 +13,12 @@
 
 namespace ircd::m::vm::notify
 {
-	using value_type = std::pair<const event::id, ctx::ctx *>;
+	struct future;
+
+	using value_type = std::pair<const event::id, ctx::promise<> *>;
 	using alloc_type = allocator::node<value_type>;
-	using map_type = std::multimap<event::id, ctx::ctx *, std::less<>, alloc_type::allocator>;
+	using map_type = std::multimap<const event::id, ctx::promise<> *, std::less<>, alloc_type::allocator>;
+	using node_type = std::pair<map_type::node_type, value_type>;
 
 	extern map_type map;
 
@@ -23,6 +26,19 @@ namespace ircd::m::vm::notify
 	bool wait(const event::id &, const milliseconds);
 }
 
+class ircd::m::vm::notify::future
+:public ctx::future<>
+{
+	node_type node;
+	ctx::promise<> promise;
+	unique_iterator<map_type> it;
+
+  public:
+	future(const event::id &);
+	future(future &&) = delete;
+	future(const future &) = delete;
+};
+
 /// Yields ctx until event was successfully evaluated. Returns false if
 /// timeout occurred.
 inline bool

include/ircd/m/vm/phase.h

@@ -16,6 +16,7 @@ namespace ircd::m::vm
 	enum phase :uint;
 
 	string_view reflect(const phase &);
+	phase phase_reflect(const string_view &) noexcept; // default NONE
 }
 
 /// Evaluation phases

include/ircd/m/vm/seq.h

@@ -13,6 +13,8 @@
 
 namespace ircd::m::vm::sequence
 {
+	struct refresh;
+
 	extern ctx::dock dock;
 	extern uint64_t retired;      // already written; always monotonic
 	extern uint64_t committed;    // pending write; usually monotonic
@@ -25,3 +27,12 @@ namespace ircd::m::vm::sequence
 	uint64_t max();
 	uint64_t min();
 }
+
+struct ircd::m::vm::sequence::refresh
+{
+	uint64_t database[2] {0, 0};
+	uint64_t retired[2] {0, 0};
+	m::event::id::buf event_id;
+
+	refresh();
+};

include/ircd/net/acceptor.h

@@ -61,17 +61,22 @@ ircd::net::acceptor
 	ip::tcp::acceptor a;
 	size_t accepting {0};
 	sockets handshaking;
+	bool secure {false};
 	bool interrupting {false};
 	ctx::dock joining;
 
 	// Internal configuration
 	void configure_dh(const json::object &);
-	void configure_certs(const json::object &);
+	bool configure_certs(const json::object &);
 	void configure_curves(const json::object &);
 	void configure_ciphers(const json::object &);
 	void configure_flags(const json::object &);
 	void configure_password(const json::object &);
-	void configure(const json::object &opts);
+	void configure_sni(const json::object &);
+	bool configure(const json::object &opts);
+
+	// Completion stack
+	void accepted(const std::shared_ptr<socket> &);
 
 	// Handshake stack
 	bool handle_sni(socket &, int &ad);

include/ircd/net/close.h

@@ -17,11 +17,15 @@ namespace ircd::net
 	struct close_opts extern const close_opts_default;
 	using close_callback = std::function<void (std::exception_ptr)>;
 
+	string_view reflect(const dc) noexcept;
+
 	// Callback-based closer.
 	void close(socket &, const close_opts &, close_callback);
+	void close(socket &, const dc &, close_callback);
 
 	// Future-based closer.
 	ctx::future<void> close(socket &, const close_opts & = close_opts_default);
+	ctx::future<void> close(socket &, const dc &);
 
 	// Fire-and-forget helper callback for close().
 	extern const close_callback close_ignore;
@@ -44,9 +48,6 @@ struct ircd::net::close_opts
 {
 	static conf::item<milliseconds> default_timeout;
 
-	close_opts() = default;
-	close_opts(const net::dc &);
-
 	/// The type of close() to be conducted is specified here.
 	net::dc type { dc::SSL_NOTIFY };
 
@@ -56,11 +57,10 @@ struct ircd::net::close_opts
 	/// If specified, these socket options will be applied when conducting
 	/// the disconnect (useful for adding an SO_LINGER time etc).
 	const sock_opts *sopts { nullptr };
-};
 
-/// Allows for implicit construction of close_opts in arguments to close()
-/// without requiring brackets for the close_opts& argument.
-inline
-ircd::net::close_opts::close_opts(const net::dc &type)
-:type{type}
-{}
+	/// For portable clean disconnection shutdown(2) might be called prior to
+	/// close(2). Setting this option to dc::RST skips the shutdown(2) when
+	/// the caller deems it unnecessary. At this time it only affects non-SSL
+	/// sockets and in the future we will have io_uring(7) fuse these calls.
+	net::dc shutdown { dc::FIN };
+};

include/ircd/net/dns_resolver.h

@@ -37,6 +37,7 @@ ircd::net::dns::resolver
 	static conf::item<milliseconds> send_rate;
 	static conf::item<size_t> send_burst;
 	static conf::item<size_t> retry_max;
+	static conf::item<bool> retry_serv_fail;
 
 	answers_callback callback;
 	std::vector<ip::udp::endpoint> server;       // The list of active servers
@@ -131,11 +132,11 @@ ircd::net::dns::tag::tag(const hostport &hp,
 {
 	this->hp.host =
 	{
-		hostbuf, copy(hostbuf, hp.host)
+		tolower(hostbuf, hp.host)
 	};
 
 	this->hp.service =
 	{
-		servicebuf, copy(servicebuf, hp.service)
+		tolower(servicebuf, hp.service)
 	};
 }

include/ircd/net/open.h

@@ -65,6 +65,9 @@ struct ircd::net::open_opts
 	/// if given. Defaults to null; no application is made.
 	const sock_opts *sopts { nullptr };
 
+	/// Option to disable SSL. Use false for plaintext socket.
+	bool secure { true };
+
 	/// Option to toggle whether to perform the SSL handshake; you want true.
 	bool handshake { true };
 

include/ircd/net/read.h

@@ -16,8 +16,9 @@ namespace ircd::net
 	using mutable_buffers = vector_view<const mutable_buffer>;
 
 	// Observers
-	size_t readable(const socket &);
-	size_t available(const socket &) noexcept;
+	size_t readable(const socket &);             // don't use w/ ssl
+	size_t available(const socket &) noexcept;   // don't use w/ ssl
+	size_t pending(const socket &) noexcept;     // use with either.
 
 	// Non-blocking; read into buffers in a single syscall
 	size_t read_one(socket &, const mutable_buffers &);

include/ircd/net/sock_opts.h

@@ -14,10 +14,13 @@
 namespace ircd::net
 {
 	struct sock_opts;
+	IRCD_OVERLOAD(system);
 
 	bool v6only(const socket &);
+	bool blocking(const socket &, system_t);
 	bool blocking(const socket &);
 	bool nopush(const socket &);
+	bool nodelay(const socket &, system_t);
 	bool nodelay(const socket &);
 	bool quickack(const socket &);
 	bool keepalive(const socket &);
@@ -29,21 +32,23 @@ namespace ircd::net
 	int attach(const socket &);
 
 	// returns true if supported, false if unsupported; failures will throw.
-	bool v6only(socket &, const bool &);
-	bool blocking(socket &, const bool &);
-	bool nopush(socket &, const bool &);
-	bool nodelay(socket &, const bool &);
-	bool quickack(socket &, const bool &);
-	bool keepalive(socket &, const bool &);
-	bool linger(socket &, const time_t &); // -1 is OFF; >= 0 is ON
-	bool read_bufsz(socket &, const size_t &bytes);
-	bool write_bufsz(socket &, const size_t &bytes);
-	bool read_lowat(socket &, const size_t &bytes);
-	bool write_lowat(socket &, const size_t &bytes);
-	bool attach(const int &sd, const int &fd);
-	bool attach(socket &, const int &fd);
-	bool detach(const int &sd, const int &fd);
-	bool detach(socket &, const int &fd);
+	bool v6only(socket &, const bool);
+	bool blocking(socket &, const bool, system_t);
+	bool blocking(socket &, const bool);
+	bool nopush(socket &, const bool);
+	bool nodelay(socket &, const bool, system_t);
+	bool nodelay(socket &, const bool);
+	bool quickack(socket &, const bool);
+	bool keepalive(socket &, const bool);
+	bool linger(socket &, const time_t); // -1 is OFF; >= 0 is ON
+	bool read_bufsz(socket &, const size_t bytes);
+	bool write_bufsz(socket &, const size_t bytes);
+	bool read_lowat(socket &, const size_t bytes);
+	bool write_lowat(socket &, const size_t bytes);
+	bool attach(const int sd, const int fd);
+	bool attach(socket &, const int fd);
+	bool detach(const int sd, const int fd);
+	bool detach(socket &, const int fd);
 
 	void set(socket &, const sock_opts &);
 }

include/ircd/net/socket.h

@@ -28,7 +28,7 @@ namespace ircd::net
 }
 
 /// Internal socket interface
-///
+/// Socket cannot be copied or moved; must be constructed as shared ptr.
 struct [[gnu::visibility("protected")]]
 ircd::net::socket
 :std::enable_shared_from_this<ircd::net::socket>
@@ -40,6 +40,7 @@ ircd::net::socket
 	using endpoint = ip::tcp::endpoint;
 	using wait_type = ip::tcp::socket::wait_type;
 	using message_flags = asio::socket_base::message_flags;
+	using ssl_stream = asio::ssl::stream<ip::tcp::socket &>;
 	using handshake_type = asio::ssl::stream<ip::tcp::socket>::handshake_type;
 	using ec_handler = std::function<void (const error_code &)>;
 	using eptr_handler = std::function<void (std::exception_ptr)>;
@@ -64,7 +65,7 @@ ircd::net::socket
 
 	uint64_t id {++count};
 	ip::tcp::socket sd;
-	asio::ssl::stream<ip::tcp::socket &> ssl;
+	std::optional<ssl_stream> ssl;
 	endpoint local, remote;
 	stat in, out;
 	deadline_timer timer;
@@ -73,6 +74,7 @@ ircd::net::socket
 	bool timer_set {false};                      // boolean lockout
 	bool timedout {false};
 	bool fini {false};
+	mutable bool _nodelay {false};               // userspace tracking only
 
 	void call_user(const eptr_handler &, const error_code &) noexcept;
 	void call_user(const ec_handler &, const error_code &) noexcept;
@@ -120,9 +122,8 @@ ircd::net::socket
 	void connect(const endpoint &, const open_opts &, eptr_handler);
 	bool cancel() noexcept;
 
-	socket(asio::ssl::context & = sslv23_client);
-
-	// Socket cannot be copied or moved; must be constructed as shared ptr
+	socket(asio::ssl::context &);
+	socket();
 	socket(socket &&) = delete;
 	socket(const socket &) = delete;
 	socket &operator=(socket &&) = delete;

include/ircd/resource/response.h

@@ -39,7 +39,7 @@ struct ircd::resource::response
 	static const size_t HEAD_BUF_SZ;
 	static conf::item<std::string> access_control_allow_origin;
 
-	response(client &, const http::code &, const string_view &content_type, const size_t &content_length, const string_view &headers = {});
+	response(client &, const http::code &, const string_view &content_type, const size_t &content_length, const string_view &headers = {}, const string_view &content = {});
 	response(client &, const string_view &str, const string_view &content_type, const http::code &, const vector_view<const http::header> &);
 	response(client &, const string_view &str, const string_view &content_type, const http::code & = http::OK, const string_view &headers = {});
 	response(client &, const json::object &str, const http::code & = http::OK);

include/ircd/rest.h

@@ -0,0 +1,211 @@
+// The Construct
+//
+// Copyright (C) The Construct Developers, Authors & Contributors
+// Copyright (C) 2016-2023 Jason Volk <jason@zemos.net>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice is present in all copies. The
+// full license for this software is available in the LICENSE file.
+
+#pragma once
+#define HAVE_IRCD_REST_H
+
+/// Simple highlevel interface for web/http requests.
+///
+/// Prior to this it was too difficult to orchestrate all the objects and
+/// buffers and low-level non-ergonomic procedures split between ircd::http
+/// and ircd::server. This should instead have some familiarity to the
+/// browser-js environment which developers can easily commit to their memory.
+namespace ircd::rest
+{
+	struct opts;
+	struct request;
+
+	struct get;
+	struct put;
+	struct post;
+}
+
+struct ircd::rest::request
+:returns<string_view>
+{
+	unique_const_buffer out;
+
+	request(const mutable_buffer &out, const rfc3986::uri &, opts);
+	request(const rfc3986::uri &, opts);
+};
+
+struct ircd::rest::get
+:request
+{
+	get(const mutable_buffer &out, const rfc3986::uri &, opts);
+	get(const mutable_buffer &out, const rfc3986::uri &);
+	get(const rfc3986::uri &, opts);
+};
+
+struct ircd::rest::put
+:request
+{
+	put(const mutable_buffer &out, const rfc3986::uri &, const string_view &content, opts);
+	put(const rfc3986::uri &, const string_view &content, opts);
+};
+
+struct ircd::rest::post
+:request
+{
+	post(const mutable_buffer &out, const rfc3986::uri &, const string_view &content, opts);
+	post(const mutable_buffer &out, const rfc3986::uri &, opts);
+	post(const rfc3986::uri &, const string_view &content, opts);
+	post(const rfc3986::uri &, opts);
+};
+
+struct ircd::rest::opts
+{
+	/// The HTTP method to use. This is overridden and should not be set unless
+	/// using the generic rest::request() call where it must be set.
+	string_view method;
+
+	/// The HTTP request body. This is overridden and should not be set unless
+	/// using the generic rest::request() call where it's set as needed.
+	string_view content;
+
+	/// The HTTP request body content-type. It is a good idea to set this when
+	/// there is request body content.
+	string_view content_type;
+
+	/// Additional request headers to send. These are pairs of string_views.
+	vector_view<const http::header> headers;
+
+	/// This is set automatically from the URI argument's domain and scheme
+	/// (service) by default. Setting it here will override.
+	net::hostport remote;
+
+	/// Managed internally by default and passed to server::request. Setting
+	/// things here will override.
+	server::out sout;
+
+	/// Managed internally by default and passed to server::request. Setting
+	/// things here will override.
+	server::in sin;
+
+	/// Passed to server::request. The http_exceptions option is useful here
+	/// to prevent this suite from throwing on non-2xx codes.
+	server::request::opts sopts;
+
+	/// Allows the HTTP response code to be returned to the caller. This may
+	/// not be initialized if the call throws any error first.
+	http::code *code {nullptr};
+
+	/// Allows the user to override the request::out with their own for
+	/// receiving dynamic content. Supply an empty unique_buffer instance.
+	unique_const_buffer *out {nullptr};
+
+	/// Optionally supply the temporary buffer for headers in/out in lieu of
+	/// any internally allocated.
+	mutable_buffer buf;
+
+	/// Timeout for the yielding/synchronous calls of this interface.
+	seconds timeout {20s};
+
+	/// Internal use
+	opts &&set(const string_view &method, const string_view &content = {});
+};
+
+inline
+ircd::rest::post::post(const rfc3986::uri &uri,
+                       opts opts)
+:request
+{
+	uri, opts.set("POST")
+}
+{}
+
+inline
+ircd::rest::post::post(const rfc3986::uri &uri,
+                       const string_view &content,
+                       opts opts)
+:request
+{
+	uri, opts.set("POST", content)
+}
+{}
+
+inline
+ircd::rest::post::post(const mutable_buffer &out,
+                       const rfc3986::uri &uri,
+                       opts opts)
+:request
+{
+	out, uri, opts.set("POST")
+}
+{}
+
+inline
+ircd::rest::post::post(const mutable_buffer &out,
+                       const rfc3986::uri &uri,
+                       const string_view &content,
+                       opts opts)
+:request
+{
+	out, uri, opts.set("POST", content)
+}
+{}
+
+inline
+ircd::rest::put::put(const rfc3986::uri &uri,
+                     const string_view &content,
+                     opts opts)
+:request
+{
+	uri, opts.set("PUT", content)
+}
+{}
+
+inline
+ircd::rest::put::put(const mutable_buffer &out,
+                     const rfc3986::uri &uri,
+                     const string_view &content,
+                     opts opts)
+:request
+{
+	out, uri, opts.set("PUT", content)
+}
+{}
+
+inline
+ircd::rest::get::get(const rfc3986::uri &uri,
+                     opts opts)
+:request
+{
+	uri, opts.set("GET")
+}
+{}
+
+inline
+ircd::rest::get::get(const mutable_buffer &out,
+                     const rfc3986::uri &uri)
+:get
+{
+	out, uri, opts{}
+}
+{}
+
+inline
+ircd::rest::get::get(const mutable_buffer &out,
+                     const rfc3986::uri &uri,
+                     opts opts)
+:request
+{
+	out, uri, opts.set("GET")
+}
+{}
+
+inline ircd::rest::opts &&
+ircd::rest::opts::set(const string_view &method,
+                      const string_view &content)
+{
+	this->method = method;
+	this->content = content?: this->content;
+	return std::move(*this);
+}

include/ircd/rfc3986.h

@@ -70,6 +70,7 @@ struct ircd::rfc3986::uri
 	string_view path;
 	string_view query;
 	string_view fragment;
+	string_view resource() const; // path and query string as one
 
 	uri(const string_view &);
 	uri() = default;
@@ -179,3 +180,12 @@ namespace ircd::rfc3986
 	void valid_remote(const string_view &);
 	bool valid_remote(std::nothrow_t, const string_view &);
 }
+
+inline ircd::string_view
+ircd::rfc3986::uri::resource()
+const
+{
+	return query?
+		string_view(begin(path), end(query)):
+		path;
+}

include/ircd/server/link.h

@@ -93,7 +93,8 @@ struct ircd::server::link
 	void submit(request &);
 
 	// control panel
-	bool close(const net::close_opts & = net::close_opts_default);
+	bool close(const net::close_opts &);
+	bool close(const net::dc = net::dc::SSL_NOTIFY);
 	bool open(const net::open_opts &);
 
 	link(server::peer &);

include/ircd/simd/unaligned.h

@@ -24,23 +24,24 @@ namespace ircd::simd
 /// T = inner aligned type
 template<class T>
 struct
-__attribute__((packed))
-__attribute__((aligned(1)))
-__attribute__((visibility("internal")))
+[[using clang: internal_linkage]]
+[[using gnu: packed, aligned(1), visibility("internal")]]
 ircd::simd::unaligned
 {
 	 using value_type = T;
 
 	T val;
 
-	operator T() const
+	[[gnu::always_inline]]
+	operator T() const noexcept
 	{
 		return val;
 	}
 
 	template<class U>
-	unaligned(U&& val)
-	:val(std::forward<U>(val))
+	[[gnu::always_inline]]
+	unaligned(const U val) noexcept
+	:val(val)
 	{}
 };
 

include/ircd/string_view.h

@@ -16,13 +16,13 @@ namespace ircd
 	struct string_view;
 
 	constexpr size_t _constexpr_strlen(const char *) noexcept;
-	template<size_t N> constexpr size_t _constexpr_strlen(const char (&)[N]) noexcept;
+	template<size_t N> consteval size_t _constexpr_strlen(const char (&)[N]) noexcept;
 
 	constexpr bool _constexpr_equal(const char *a, const char *b) noexcept;
 	constexpr bool _constexpr_equal(const char *a, const char *b, size_t) noexcept;
 	constexpr bool _constexpr_equal(const char *a, const size_t, const char *b, const size_t) noexcept;
 	constexpr bool _constexpr_equal(const string_view &, const string_view &) noexcept;
-	template<size_t N0, size_t N1> constexpr bool _constexpr_equal(const char (&)[N0], const char (&)[N1]) noexcept;
+	template<size_t N0, size_t N1> consteval bool _constexpr_equal(const char (&)[N0], const char (&)[N1]) noexcept;
 
 	constexpr const char *data(const string_view &) noexcept;
 	constexpr size_t size(const string_view &) noexcept;
@@ -327,7 +327,7 @@ noexcept
 
 template<size_t N0,
          size_t N1>
-constexpr bool
+consteval bool
 ircd::_constexpr_equal(const char (&a)[N0],
                        const char (&b)[N1])
 noexcept
@@ -347,7 +347,10 @@ ircd::_constexpr_equal(const string_view &a,
                        const string_view &b)
 noexcept
 {
-	return _constexpr_equal(data(a), size(a), data(b), size(b));
+	if constexpr(__cplusplus >= 202002L)
+		return a == b;
+	else
+		return _constexpr_equal(data(a), size(a), data(b), size(b));
 }
 
 constexpr bool
@@ -378,7 +381,7 @@ noexcept
 }
 
 template<size_t N>
-constexpr size_t
+consteval size_t
 ircd::_constexpr_strlen(const char (&a)[N])
 noexcept
 {

include/ircd/util/bitset.h

@@ -107,6 +107,7 @@ constexpr void
 ircd::util::bitset<N>::set(const size_t pos,
                            const bool val)
 {
+	reset(pos);
 	buf[byte(pos)] |= word(val) << bit(pos);
 }
 
@@ -152,7 +153,9 @@ const
 {
 	constexpr auto max(words - 1);
 	const auto off(pos / 8);
-	assert(off <= max);
+	if(!__builtin_is_constant_evaluated())
+		assert(off <= max);
+
 	return std::min(off, max);
 }
 

include/ircd/util/typography.h

@@ -140,6 +140,34 @@ struct is_specialization_of<T<args...>, T>
 :std::true_type
 {};
 
+//
+// Convenience signedness cast template
+//
+
+template<class T>
+using enable_if_s2u = std::enable_if<std::is_signed<T>::value, typename std::make_unsigned<T>::type>;
+
+template<class T>
+[[using gnu: always_inline, gnu_inline, artificial]]
+extern inline typename enable_if_s2u<T>::type *
+sign_cast(T *const t)
+{
+	using type = typename std::make_unsigned<T>::type;
+	return reinterpret_cast<type *>(t);
+}
+
+template<class T>
+using enable_if_u2s = std::enable_if<std::is_unsigned<T>::value, typename std::make_signed<T>::type>;
+
+template<class T>
+[[using gnu: always_inline, gnu_inline, artificial]]
+extern inline typename enable_if_u2s<T>::type *
+sign_cast(T *const t)
+{
+	using type = typename std::make_signed<T>::type;
+	return reinterpret_cast<type *>(t);
+}
+
 //
 // Convenience const_cast deduction template
 //

include/ircd/util/unique_iterator.h

@@ -32,41 +32,24 @@ template<class container,
          class iterator>
 struct ircd::util::unique_iterator
 {
-	container *c;
+	container *c {nullptr};
 	iterator it;
 
-	unique_iterator(container &c, iterator it)
-	:c{&c}
-	,it{std::move(it)}
-	{}
+	operator const iterator &() const;
+	decltype(auto) operator->() const;
+	decltype(auto) operator*() const;
 
-	unique_iterator()
-	:c{nullptr}
-	{}
+	operator iterator &();
+	decltype(auto) operator->();
+	decltype(auto) operator*();
 
+	unique_iterator(container &c, iterator it);
+	unique_iterator() = default;
+	unique_iterator(unique_iterator &&o) noexcept;
 	unique_iterator(const unique_iterator &) = delete;
-	unique_iterator(unique_iterator &&o) noexcept
-	:c{std::move(o.c)}
-	,it{std::move(o.it)}
-	{
-		o.c = nullptr;
-	}
-
+	unique_iterator &operator=(unique_iterator &&o) noexcept;
 	unique_iterator &operator=(const unique_iterator &) = delete;
-	unique_iterator &operator=(unique_iterator &&o) noexcept
-	{
-		this->~unique_iterator();
-		c = std::move(o.c);
-		it = std::move(o.it);
-		o.c = nullptr;
-		return *this;
-	}
-
-	~unique_iterator() noexcept
-	{
-		if(c)
-			c->erase(it);
-	}
+	~unique_iterator() noexcept;
 };
 
 template<class container>
@@ -76,3 +59,89 @@ struct ircd::util::unique_const_iterator
 	using iterator_type = typename container::const_iterator;
 	using unique_iterator<container, iterator_type>::unique_iterator;
 };
+
+template<class container,
+         class iterator>
+inline
+ircd::util::unique_iterator<container, iterator>::unique_iterator(container &c,
+                                                                  iterator it)
+:c{&c}
+,it{std::move(it)}
+{}
+
+template<class container,
+         class iterator>
+inline
+ircd::util::unique_iterator<container, iterator>::unique_iterator(unique_iterator &&o)
+noexcept
+:c{std::move(o.c)}
+,it{std::move(o.it)}
+{
+	o.c = nullptr;
+}
+
+template<class container,
+         class iterator>
+inline ircd::util::unique_iterator<container, iterator> &
+ircd::util::unique_iterator<container, iterator>::operator=(unique_iterator &&o)
+noexcept
+{
+	this->~unique_iterator();
+	c = std::move(o.c);
+	it = std::move(o.it);
+	o.c = nullptr;
+	return *this;
+}
+
+template<class container,
+         class iterator>
+inline
+ircd::util::unique_iterator<container, iterator>::~unique_iterator()
+noexcept
+{
+	if(c)
+		c->erase(it);
+}
+
+template<class container,
+         class iterator>
+inline decltype(auto)
+ircd::util::unique_iterator<container, iterator>::operator*()
+{
+	return it.operator*();
+}
+
+template<class container,
+         class iterator>
+inline decltype(auto)
+ircd::util::unique_iterator<container, iterator>::operator->()
+{
+	return it.operator->();
+}
+
+template<class container,
+         class iterator>
+inline decltype(auto)
+ircd::util::unique_iterator<container, iterator>::operator*()
+const
+{
+	return it.operator*();
+}
+
+template<class container,
+         class iterator>
+inline decltype(auto)
+ircd::util::unique_iterator<container, iterator>::operator->()
+const
+{
+	return it.operator->();
+}
+
+template<class container,
+         class iterator>
+inline ircd::util::unique_iterator<container, iterator>::operator
+const iterator &()
+const
+{
+	return it;
+}

include/ircd/versions.h

@@ -73,16 +73,9 @@ struct ircd::versions
 	~versions() noexcept;
 };
 
-namespace ircd
-{
-	template<>
-	decltype(versions::allocator)
-	instance_list<versions>::allocator;
-
-	template<>
-	decltype(versions::list)
-	instance_list<versions>::list;
-}
+template<>
+decltype(ircd::versions::list)
+ircd::instance_list<ircd::versions>::list;
 
 inline ircd::versions::operator
 const long &()

ircd/Makefile.am

@@ -237,6 +237,7 @@ endif
 libircd_la_SOURCES += server.cc
 libircd_la_SOURCES += client.cc
 libircd_la_SOURCES += resource.cc
+libircd_la_SOURCES += rest.cc
 if JS
 libircd_la_SOURCES += js.cc
 endif
@@ -435,6 +436,8 @@ gpt_gpu.spv.cc: gpt_gpu.spv
 # GCN-HSA
 #
 
+if AMD64
+
 GCN_HSA_TARGET = amdgcn--amdhsa
 
 GCN_HSA_CPPFLAGS = $(GPU_CPPFLAGS)
@@ -469,10 +472,14 @@ libircd_la_SOURCES += gpt_gpu.gcn_hsa.bc.cc
 gpt_gpu.gcn_hsa.bc.cc: gpt_gpu.gcn_hsa.bc
 	xxd -i $^ $@
 
+endif # AMD64
+
 #
 # R600
 #
 
+if AMD64
+
 R600_TARGET = r600--
 
 #
@@ -510,6 +517,8 @@ libircd_la_SOURCES += gpt_gpu.r600_barts.bc.cc
 gpt_gpu.r600_barts.bc.cc: gpt_gpu.r600_barts.bc
 	xxd -i $^ $@
 
+endif # AMD64
+
 #
 #
 #

ircd/b64.cc

@@ -29,7 +29,7 @@ namespace ircd::b64
 	static u8x64 decode_block(const u8x64 block, i64x8 &__restrict__ err) noexcept;
 
 	[[IRCD_CLONES(IRCD_B64_TARGETS)]]
-	static u8x64 encode_block(const u8x64 block, const dictionary &) noexcept;
+	static u8x64 encode_block(const u8x64 block, const dictionary) noexcept;
 }
 #pragma GCC visibility pop
 
@@ -157,7 +157,7 @@ alignas(64)
 ircd::string_view
 ircd::b64::encode(const mutable_buffer out,
                   const const_buffer in,
-                  const dictionary &dict)
+                  const dictionary dict)
 noexcept
 {
 	const auto pads
@@ -193,19 +193,9 @@ noexcept
 ircd::string_view
 ircd::b64::encode_unpadded(const mutable_buffer out,
                            const const_buffer in,
-                           const dictionary &dict)
+                           const dictionary dict)
 noexcept
 {
-	char *const __restrict__ dst
-	{
-		data(out)
-	};
-
-	const char *const __restrict__ src
-	{
-		data(in)
-	};
-
 	const size_t res_len
 	{
 		encode_unpadded_size(in)
@@ -216,38 +206,49 @@ noexcept
 		std::min(res_len, size(out))
 	};
 
-	u8x64 block {0};
-	size_t i(0), j(0);
-	for(; i < size(in) / 48 && i < out_len / 64; ++i)
+	uint i;
+	for(i = 0; i < size(in) / 48 && i < out_len / 64; ++i)
 	{
 		// Destination is indexed at 64 byte stride
-		const auto di
+		u512x1_u *const __restrict__ dx
 		{
-			reinterpret_cast<u512x1_u *__restrict__>(dst  + (i * 64))
+			reinterpret_cast<u512x1_u *>(data(out))
 		};
 
 		// Source is indexed at 48 byte stride
-		const auto si
+		const auto *const __restrict__ si
 		{
-			reinterpret_cast<const u512x1_u *__restrict__>(src + (i * 48))
+			data(in) + i * 48
 		};
 
-		block = *si;
+		u8x64 block {0};
+		#pragma clang loop vectorize(enable) unroll(full)
+		for(uint j(0); j < 48; ++j)
+			block[j] = si[j];
+
 		block = encode_block(block, dict);
-		*di = block;
+		dx[i] = block;
 	}
 
 	for(; i * 48 < size(in) && i * 64 < out_len; ++i)
 	{
-		#if !defined(__AVX__)
-		#pragma clang loop unroll_count(2)
-		#endif
-		for(j = 0; j < 48 && i * 48 + j < size(in); ++j)
-			block[j] = src[i * 48 + j];
+		auto *const __restrict__ di
+		{
+			data(out) + i * 64
+		};
+
+		const auto *const __restrict__ si
+		{
+			data(in) + i * 48
+		};
+
+		u8x64 block {0};
+		for(uint j(0); j < 48 && i * 48 + j < size(in); ++j)
+			block[j] = si[j];
 
 		block = encode_block(block, dict);
-		for(j = 0; j < 64 && i * 64 + j < out_len; ++j)
-			dst[i * 64 + j] = block[j];
+		for(uint j(0); j < 64 && i * 64 + j < out_len; ++j)
+			di[j] = block[j];
 	}
 
 	return string_view
@@ -270,7 +271,7 @@ noexcept
 [[IRCD_CLONES(IRCD_B64_TARGETS)]]
 ircd::u8x64
 ircd::b64::encode_block(const u8x64 in,
-                        const dictionary &dict)
+                        const dictionary dict)
 noexcept
 {
 	size_t i, j, k;
@@ -319,16 +320,6 @@ ircd::const_buffer
 ircd::b64::decode(const mutable_buffer out,
                   const string_view in)
 {
-	char *const __restrict__ dst
-	{
-		data(out)
-	};
-
-	const char *const __restrict__ src
-	{
-		data(in)
-	};
-
 	const size_t pads
 	{
 		endswith_count(in, '=')
@@ -344,39 +335,51 @@ ircd::b64::decode(const mutable_buffer out,
 		std::min(decode_size(in_len), size(out))
 	};
 
+	uint i;
 	i64x8 err {0};
-	u8x64 block {0};
-	size_t i(0), j(0);
-	for(; i < in_len / 64 && i < out_len / 48; ++i)
+	for(i = 0; i < in_len / 64 && i < out_len / 48; ++i)
 	{
 		// Destination is indexed at 48 byte stride
-		const auto di
+		auto *const __restrict__ di
 		{
-			reinterpret_cast<u512x1_u *__restrict__>(dst + (i * 48))
+			data(out) + i * 48
 		};
 
 		// Source is indexed at 64 byte stride
-		const auto si
+		const u512x1_u *const __restrict__ sx
 		{
-			reinterpret_cast<const u512x1_u *__restrict__>(src + (i * 64))
+			reinterpret_cast<const u512x1_u *>(data(in))
 		};
 
-		block = *si;
+		u8x64 block;
+		block = sx[i];
 		block = decode_block(block, err);
-		*di = block;
+		#pragma clang loop vectorize(enable) unroll(full)
+		for(uint j(0); j < 48; ++j)
+			di[j] = block[j];
 	}
 
 	for(; i * 64 < in_len && i * 48 < out_len; ++i)
 	{
-		u8x64 mask {0};
-		for(j = 0; j < 64 && i * 64 + j < in_len; ++j)
-			block[j] = src[i * 64 + j],
+		auto *const __restrict__ di
+		{
+			data(out) + i * 48
+		};
+
+		const auto *const __restrict__ si
+		{
+			data(in) + i * 64
+		};
+
+		u8x64 block {0}, mask {0};
+		for(uint j(0); j < 64 && i * 64 + j < in_len; ++j)
+			block[j] = si[j],
 			mask[j] = 0xff;
 
 		i64x8 _err {0};
 		block = decode_block(block, _err);
-		for(j = 0; j < 48 && i * 48 + j < out_len; ++j)
-			dst[i * 48 + j] = block[j];
+		for(uint j(0); j < 48 && i * 48 + j < out_len; ++j)
+			di[j] = block[j];
 
 		err |= _err & i64x8(mask);
 	}
@@ -438,7 +441,7 @@ noexcept
 
 	u8x64 c(b), ret;
 	#pragma clang loop vectorize(enable) unroll(full)
-	for(i = 0; i < 64; ++i)
+	for(i = 0; i < 48; ++i)
 		ret[i] = c[decode_permute_tab_le[i]];
 
 	err |= i64x8(_err);

ircd/cl.cc

@@ -192,8 +192,8 @@ ircd::cl::envs
 		{ "default",   "true"                 },
 	},
 	{
-		{ "name",      "MESA_GLSL_CACHE_DISABLE" },
-		{ "default",   "true"                    },
+		{ "name",      "MESA_SHADER_CACHE_DISABLE" },
+		{ "default",   "true"                      },
 	},
 	{
 		{ "name",      "AMD_DEBUG"           },
@@ -355,6 +355,7 @@ ircd::cl::init::fini_libs()
 
 size_t
 ircd::cl::init::init_platforms()
+try
 {
 	// OpenCL sez platform=null is implementation defined.
 	constexpr auto ignore(CL_INVALID_PLATFORM);
@@ -365,9 +366,21 @@ ircd::cl::init::init_platforms()
 
 	return platforms;
 }
+catch(const std::exception &e)
+{
+	log::logf
+	{
+		log, log::level::DERROR,
+		"OpenCL platforms initialization :%s",
+		e.what(),
+	};
+
+	return 0;
+}
 
 size_t
 ircd::cl::init::init_devices()
+try
 {
 	// Get the devices.
 	size_t devices_total(0);
@@ -414,6 +427,16 @@ ircd::cl::init::init_devices()
 
 	return devices_total;
 }
+catch(const std::exception &e)
+{
+	log::error
+	{
+		log, "OpenCL devices initialization :%s",
+		e.what(),
+	};
+
+	return 0;
+}
 
 size_t
 ircd::cl::init::init_ctxs()

ircd/client.cc

@@ -587,7 +587,13 @@ try
 		loghead(client),
 	};
 
-	client.close(net::dc::SSL_NOTIFY, net::close_ignore);
+	const net::close_opts opts
+	{
+		.type = net::dc::SSL_NOTIFY,
+		.shutdown = net::dc::RST,
+	};
+
+	client.close(opts, net::close_ignore);
 	return false;
 }
 catch(const std::exception &e)
@@ -1048,6 +1054,15 @@ ircd::client::discard_unconsumed(const http::request::head &head)
 	assert(content_consumed == head.content_length);
 }
 
+ircd::ctx::future<void>
+ircd::client::close(const net::dc type)
+{
+	return close(net::close_opts
+	{
+		.type = type,
+	});
+}
+
 ircd::ctx::future<void>
 ircd::client::close(const net::close_opts &opts)
 {
@@ -1056,6 +1071,18 @@ ircd::client::close(const net::close_opts &opts)
 		ctx::already;
 }
 
+void
+ircd::client::close(const net::dc type,
+                    net::close_callback callback)
+{
+	const net::close_opts opts
+	{
+		.type = type,
+	};
+
+	close(opts, std::move(callback));
+}
+
 void
 ircd::client::close(const net::close_opts &opts,
                     net::close_callback callback)

ircd/db.cc

@@ -179,10 +179,10 @@ try
 		fs::base::db
 	};
 
-	if(!fs::is_dir(dbdir) && (ircd::read_only || ircd::write_avoid))
+	if(!fs::is_dir(dbdir) && (ircd::read_only || ircd::maintenance))
 		log::warning
 		{
-			log, "Not creating database directory `%s' in read-only/write-avoid mode.", dbdir
+			log, "Not creating database directory `%s' in read-only/maintenance mode.", dbdir
 		};
 	else if(fs::mkdir(dbdir))
 		log::notice
@@ -2358,15 +2358,20 @@ ircd::db::seek(domain::const_iterator_base &it,
 {
 	switch(p)
 	{
+		// This is inefficient as per RocksDB's prefix impl.
 		case pos::BACK:
 		{
-			// This is inefficient as per RocksDB's prefix impl. unknown why
-			// a seek to NEXT is still needed after walking back one.
+			char buf[512];
+			string_view key;
+			assert(bool(it)); do
+			{
+				assert(size(it.it->key()) <= sizeof(buf));
+				key = string_view(buf, copy(buf, slice(it.it->key())));
+			}
 			while(seek(it, pos::NEXT));
-			if(seek(it, pos::PREV))
-				seek(it, pos::NEXT);
 
-			return bool(it);
+			assert(key);
+			return seek(it, key);
 		}
 
 		default:
@@ -2377,14 +2382,6 @@ ircd::db::seek(domain::const_iterator_base &it,
 	return seek(static_cast<column::const_iterator_base &>(it), p);
 }
 
-bool
-ircd::db::seek(domain::const_iterator_base &it,
-               const string_view &p)
-{
-	it.opts.prefix = true;
-	return seek(static_cast<column::const_iterator_base &>(it), p);
-}
-
 ircd::db::domain::const_iterator
 ircd::db::domain::begin(const string_view &key,
                         gopts opts)
@@ -3204,7 +3201,7 @@ rocksdb::Cache *
 ircd::db::cache_compressed(column &column)
 {
 	database::column &c(column);
-	return c.table_opts.block_cache_compressed.get();
+	return nullptr; // c.table_opts.block_cache_compressed.get();
 }
 
 [[gnu::hot]]
@@ -3219,7 +3216,7 @@ const rocksdb::Cache *
 ircd::db::cache_compressed(const column &column)
 {
 	const database::column &c(column);
-	return c.table_opts.block_cache_compressed.get();
+	return nullptr; // c.table_opts.block_cache_compressed.get();
 }
 
 template<>
@@ -3852,9 +3849,16 @@ ircd::db::options::operator rocksdb::PlainTableOptions()
 const
 {
 	rocksdb::PlainTableOptions ret;
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	#endif
 	throw_on_error
 	{
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetPlainTableOptionsFromString(opts, ret, *this, &ret)
+		#else
 		rocksdb::GetPlainTableOptionsFromString(ret, *this, &ret)
+		#endif
 	};
 
 	return ret;
@@ -3864,9 +3868,16 @@ ircd::db::options::operator rocksdb::BlockBasedTableOptions()
 const
 {
 	rocksdb::BlockBasedTableOptions ret;
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	#endif
 	throw_on_error
 	{
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetBlockBasedTableOptionsFromString(opts, ret, *this, &ret)
+		#else
 		rocksdb::GetBlockBasedTableOptionsFromString(ret, *this, &ret)
+		#endif
 	};
 
 	return ret;
@@ -3876,9 +3887,16 @@ ircd::db::options::operator rocksdb::ColumnFamilyOptions()
 const
 {
 	rocksdb::ColumnFamilyOptions ret;
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	#endif
 	throw_on_error
 	{
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetColumnFamilyOptionsFromString(opts, ret, *this, &ret)
+		#else
 		rocksdb::GetColumnFamilyOptionsFromString(ret, *this, &ret)
+		#endif
 	};
 
 	return ret;
@@ -3888,9 +3906,16 @@ ircd::db::options::operator rocksdb::DBOptions()
 const
 {
 	rocksdb::DBOptions ret;
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	#endif
 	throw_on_error
 	{
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetDBOptionsFromString(opts, ret, *this, &ret)
+		#else
 		rocksdb::GetDBOptionsFromString(ret, *this, &ret)
+		#endif
 	};
 
 	return ret;
@@ -3900,9 +3925,16 @@ ircd::db::options::operator rocksdb::Options()
 const
 {
 	rocksdb::Options ret;
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	#endif
 	throw_on_error
 	{
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetOptionsFromString(opts, ret, *this, &ret)
+		#else
 		rocksdb::GetOptionsFromString(ret, *this, &ret)
+		#endif
 	};
 
 	return ret;
@@ -3949,52 +3981,88 @@ const
 }
 
 rocksdb::BlockBasedTableOptions
-ircd::db::options::map::merge(const rocksdb::BlockBasedTableOptions &opts)
+ircd::db::options::map::merge(const rocksdb::BlockBasedTableOptions &in)
 const
 {
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	opts.ignore_unknown_options = true;
+	#endif
+
 	rocksdb::BlockBasedTableOptions ret;
 	throw_on_error
 	{
-		rocksdb::GetBlockBasedTableOptionsFromMap(opts, *this, &ret, true, true)
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetBlockBasedTableOptionsFromMap(opts, in, *this, &ret)
+		#else
+		rocksdb::GetBlockBasedTableOptionsFromMap(in, *this, &ret, true, true)
+		#endif
 	};
 
 	return ret;
 }
 
 rocksdb::PlainTableOptions
-ircd::db::options::map::merge(const rocksdb::PlainTableOptions &opts)
+ircd::db::options::map::merge(const rocksdb::PlainTableOptions &in)
 const
 {
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	opts.ignore_unknown_options = true;
+	#endif
+
 	rocksdb::PlainTableOptions ret;
 	throw_on_error
 	{
-		rocksdb::GetPlainTableOptionsFromMap(opts, *this, &ret, true, true)
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetPlainTableOptionsFromMap(opts, in, *this, &ret)
+		#else
+		rocksdb::GetPlainTableOptionsFromMap(in, *this, &ret, true, true)
+		#endif
 	};
 
 	return ret;
 }
 
 rocksdb::ColumnFamilyOptions
-ircd::db::options::map::merge(const rocksdb::ColumnFamilyOptions &opts)
+ircd::db::options::map::merge(const rocksdb::ColumnFamilyOptions &in)
 const
 {
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	opts.ignore_unknown_options = true;
+	#endif
+
 	rocksdb::ColumnFamilyOptions ret;
 	throw_on_error
 	{
-		rocksdb::GetColumnFamilyOptionsFromMap(opts, *this, &ret, true, true)
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetColumnFamilyOptionsFromMap(opts, in, *this, &ret)
+		#else
+		rocksdb::GetColumnFamilyOptionsFromMap(in, *this, &ret, true, true)
+		#endif
 	};
 
 	return ret;
 }
 
 rocksdb::DBOptions
-ircd::db::options::map::merge(const rocksdb::DBOptions &opts)
+ircd::db::options::map::merge(const rocksdb::DBOptions &in)
 const
 {
+	#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+	rocksdb::ConfigOptions opts;
+	opts.ignore_unknown_options = true;
+	#endif
+
 	rocksdb::DBOptions ret;
 	throw_on_error
 	{
-		rocksdb::GetDBOptionsFromMap(opts, *this, &ret, true, true)
+		#ifdef IRCD_DB_HAS_CONFIG_OPTIONS
+		rocksdb::GetDBOptionsFromMap(opts, in, *this, &ret)
+		#else
+		rocksdb::GetDBOptionsFromMap(in, *this, &ret, true, true)
+		#endif
 	};
 
 	return ret;
@@ -4053,11 +4121,19 @@ ircd::db::insert(rocksdb::Cache &cache,
 	// the argument execution doesn't throw after release()
 	throw_on_error
 	{
+		#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+		cache.Insert(slice(key),
+		             mutable_cast(data(value.release())),
+		             cache.GetCacheItemHelper(nullptr), // ???
+		             value_size,
+		             nullptr)
+		#else
 		cache.Insert(slice(key),
 		             mutable_cast(data(value.release())),
 		             value_size,
 		             deleter,
 		             nullptr)
+		#endif
 	};
 
 	return true;
@@ -4066,6 +4142,24 @@ ircd::db::insert(rocksdb::Cache &cache,
 void
 ircd::db::for_each(const rocksdb::Cache &cache,
                    const cache_closure &closure)
+#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+{
+	const auto _closure{[&closure]
+	(const auto &slice, void *const value, size_t size, const auto *const helper)
+	noexcept
+	{
+		const const_buffer buf
+		{
+			reinterpret_cast<const char *>(value), size
+		};
+
+		closure(buf);
+	}};
+
+	rocksdb::Cache::ApplyToAllEntriesOptions opts;
+	mutable_cast(cache).ApplyToAllEntries(_closure, opts);
+}
+#else
 {
 	// Due to the use of the global variables which are required when using a
 	// C-style callback for RocksDB, we have to make use of this function
@@ -4094,6 +4188,7 @@ ircd::db::for_each(const rocksdb::Cache &cache,
 	},
 	true);
 }
+#endif
 
 #ifdef IRCD_DB_HAS_CACHE_GETCHARGE
 size_t
@@ -4794,7 +4889,7 @@ ircd::db::_read(const vector_view<_read_op> &op,
 
 	const bool parallelize
 	{
-		#ifdef IRCD_DB_HAS_MULTIGET_DIRECT
+		#if defined(IRCD_DB_HAS_MULTIGET_DIRECT) && defined(IRCD_DB_HAS_MULTIREAD_FIX)
 			true && num > 1
 		#else
 			false
@@ -4913,24 +5008,23 @@ ircd::db::_seek(const vector_view<_read_op> &op,
 namespace ircd::db
 {
 	static rocksdb::Iterator &_seek_(rocksdb::Iterator &, const pos &);
-	static rocksdb::Iterator &_seek_(rocksdb::Iterator &, const string_view &);
-	static rocksdb::Iterator &_seek_lower_(rocksdb::Iterator &, const string_view &);
-	static rocksdb::Iterator &_seek_upper_(rocksdb::Iterator &, const string_view &);
-	static bool _seek(database::column &, const pos &, const rocksdb::ReadOptions &, rocksdb::Iterator &it);
-	static bool _seek(database::column &, const string_view &, const rocksdb::ReadOptions &, rocksdb::Iterator &it);
+	static rocksdb::Iterator &_seek_(rocksdb::Iterator &, const string_view &, const bool lte);
+	static bool _seek(database::column &, const pos &, const rocksdb::ReadOptions &, rocksdb::Iterator &it, const bool lte);
+	static bool _seek(database::column &, const string_view &, const rocksdb::ReadOptions &, rocksdb::Iterator &it, const bool lte);
 }
 
 std::unique_ptr<rocksdb::Iterator>
 ircd::db::seek(column &column,
                const string_view &key,
-               const gopts &opts)
+               const gopts &opts,
+               const bool lte)
 {
 	database &d(column);
 	database::column &c(column);
 
 	std::unique_ptr<rocksdb::Iterator> ret;
 	const auto ropts(make_opts(opts));
-	seek(c, key, ropts, ret);
+	seek(c, key, ropts, ret, lte);
 	return ret;
 }
 
@@ -4939,7 +5033,8 @@ bool
 ircd::db::seek(database::column &c,
                const pos &p,
                const rocksdb::ReadOptions &opts,
-               std::unique_ptr<rocksdb::Iterator> &it)
+               std::unique_ptr<rocksdb::Iterator> &it,
+               const bool lte)
 {
 	const ctx::uninterruptible ui;
 	const ctx::stack_usage_assertion sua;
@@ -4951,31 +5046,33 @@ ircd::db::seek(database::column &c,
 		it.reset(d.d->NewIterator(opts, cf));
 	}
 
-	return _seek(c, p, opts, *it);
+	return _seek(c, p, opts, *it, lte);
 }
 
 bool
 ircd::db::_seek(database::column &c,
                 const string_view &p,
                 const rocksdb::ReadOptions &opts,
-                rocksdb::Iterator &it)
+                rocksdb::Iterator &it,
+                const bool lte)
 try
 {
 	util::timer timer{util::timer::nostart};
 	if constexpr(RB_DEBUG_DB_SEEK)
 		timer = util::timer{};
 
-	_seek_(it, p);
+	_seek_(it, p, lte);
 
 	database &d(*c.d);
 	if constexpr(RB_DEBUG_DB_SEEK)
 		log::debug
 		{
-			log, "[%s] %lu:%lu SEEK %s %s in %ld$us '%s'",
+			log, "[%s] %lu:%lu SEEK[%s] %s %s in %ld$us '%s'",
 			name(d),
 			sequence(d),
 			sequence(opts.snapshot),
-			valid(it)? "VALID" : "INVALID",
+			lte? "LTE"_sv: "GTE"_sv,
+			valid(it)? "VALID"_sv: "INVALID"_sv,
 			it.status().ok()? "OK"s: it.status().ToString(),
 			timer.at<microseconds>().count(),
 			name(c)
@@ -4988,11 +5085,12 @@ catch(const error &e)
 	const database &d(*c.d);
 	log::critical
 	{
-		log, "[%s][%s] %lu:%lu SEEK key :%s",
+		log, "[%s][%s] %lu:%lu SEEK[%s] key :%s",
 		name(d),
 		name(c),
 		sequence(d),
 		sequence(opts.snapshot),
+		lte? "LTE"_sv: "GTE"_sv,
 		e.what(),
 	};
 
@@ -5003,7 +5101,8 @@ bool
 ircd::db::_seek(database::column &c,
                 const pos &p,
                 const rocksdb::ReadOptions &opts,
-                rocksdb::Iterator &it)
+                rocksdb::Iterator &it,
+                const bool)
 try
 {
 	bool valid_it;
@@ -5025,7 +5124,7 @@ try
 			sequence(d),
 			sequence(opts.snapshot),
 			reflect(p),
-			valid_it? "VALID" : "INVALID",
+			valid_it? "VALID"_sv: "INVALID"_sv,
 			it.status().ok()? "OK"s: it.status().ToString(),
 			timer.at<microseconds>().count(),
 			name(c)
@@ -5044,41 +5143,27 @@ catch(const error &e)
 		sequence(d),
 		sequence(opts.snapshot),
 		reflect(p),
-		it.Valid()? "VALID" : "INVALID",
+		it.Valid()? "VALID"_sv: "INVALID"_sv,
 		e.what(),
 	};
 
 	throw;
 }
 
-/// Seek to entry NOT GREATER THAN key. That is, equal to or less than key
-rocksdb::Iterator &
-ircd::db::_seek_lower_(rocksdb::Iterator &it,
-                       const string_view &sv)
-{
-	assert(!ctx::interruptible());
-
-	it.SeekForPrev(slice(sv));
-	return it;
-}
-
-/// Seek to entry NOT LESS THAN key. That is, equal to or greater than key
-rocksdb::Iterator &
-ircd::db::_seek_upper_(rocksdb::Iterator &it,
-                       const string_view &sv)
-{
-	assert(!ctx::interruptible());
-
-	it.Seek(slice(sv));
-	return it;
-}
-
 /// Defaults to _seek_upper_ because it has better support from RocksDB.
 rocksdb::Iterator &
 ircd::db::_seek_(rocksdb::Iterator &it,
-                 const string_view &sv)
+                 const string_view &sv,
+                 const bool lte)
 {
-	return _seek_upper_(it, sv);
+	assert(!ctx::interruptible());
+
+	if(lte)
+		it.SeekForPrev(slice(sv));
+	else
+		it.Seek(slice(sv));
+
+	return it;
 }
 
 rocksdb::Iterator &
@@ -5089,11 +5174,24 @@ ircd::db::_seek_(rocksdb::Iterator &it,
 
 	switch(p)
 	{
-		case pos::NEXT:     it.Next();           break;
-		case pos::PREV:     it.Prev();           break;
-		case pos::FRONT:    it.SeekToFirst();    break;
-		case pos::BACK:     it.SeekToLast();     break;
-		default:
+		case pos::NEXT:
+			assert(valid(it));
+			it.Next();
+			break;
+
+		case pos::PREV:
+			assert(valid(it));
+			it.Prev();
+			break;
+
+		case pos::FRONT:
+			it.SeekToFirst();
+			break;
+
+		case pos::BACK:
+			it.SeekToLast();
+			break;
+
 		case pos::END:
 		{
 			it.SeekToLast();
@@ -5102,6 +5200,10 @@ ircd::db::_seek_(rocksdb::Iterator &it,
 
 			break;
 		}
+
+		default:
+			assert(false);
+			break;
 	}
 
 	return it;
@@ -5825,6 +5927,9 @@ ircd::db::reflect(const rocksdb::CompactionReason &r)
 		#ifdef IRCD_DB_HAS_ROUND_ROBIN_TTL
 		case Reason::kRoundRobinTtl:                return "kRoundRobinTtl";
 		#endif
+		#ifdef IRCD_DB_HAS_REFIT_LEVEL
+		case Reason::kRefitLevel:                   return "RefitLevel";
+		#endif
 
 		case Reason::kNumOfReasons:
 			break;

ircd/db.h

@@ -61,6 +61,9 @@
 #include <rocksdb/compaction_filter.h>
 #include <rocksdb/wal_filter.h>
 #include <rocksdb/rate_limiter.h>
+#if __has_include(<rocksdb/advanced_cache.h>)
+#include <rocksdb/advanced_cache.h>
+#endif
 #pragma clang attribute pop
 
 #include "db_has.h"
@@ -131,10 +134,8 @@ namespace ircd::db
 	static void valid_eq_or_throw(const rocksdb::Iterator &, const string_view &);
 
 	// [GET] iterator seek suite
-	template<class pos> static bool seek(database::column &, const pos &, const rocksdb::ReadOptions &, std::unique_ptr<rocksdb::Iterator> &it);
-	static std::unique_ptr<rocksdb::Iterator> seek(column &, const gopts &);
-	static std::unique_ptr<rocksdb::Iterator> seek(column &, const string_view &key, const gopts &);
-	static std::vector<row::value_type> seek(database &, const gopts &);
+	template<class pos> static bool seek(database::column &, const pos &, const rocksdb::ReadOptions &, std::unique_ptr<rocksdb::Iterator> &it, const bool lte = false);
+	static std::unique_ptr<rocksdb::Iterator> seek(column &, const string_view &key, const gopts &, const bool lte = false);
 	static std::pair<string_view, string_view> operator*(const rocksdb::Iterator &);
 
 	// [GET] read suite
@@ -218,8 +219,18 @@ ircd::db::database::cache final
 	std::shared_ptr<rocksdb::Cache> c;
 
 	const char *Name() const noexcept override;
+	#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+	Status Insert(const Slice &key, ObjectPtr, const CacheItemHelper *, size_t charge, Handle **, Priority) noexcept override;
+	#else
 	Status Insert(const Slice &key, void *value, size_t charge, deleter, Handle **, Priority) noexcept override;
+	#endif
+	#if defined(IRCD_DB_HAS_CACHE_ASYNC)
+	Handle *Lookup(const Slice &key, const CacheItemHelper *, CreateContext *, Priority, Statistics *) noexcept override;
+	#elif defined(IRCD_DB_HAS_CACHE_ITEMHELPER)
+	Handle *Lookup(const Slice &key, const CacheItemHelper *, CreateContext *, Priority, bool, Statistics *) noexcept override;
+	#else
 	Handle *Lookup(const Slice &key, Statistics *) noexcept override;
+	#endif
 	bool Ref(Handle *) noexcept override;
 	bool Release(Handle *, bool force_erase) noexcept override;
 	void *Value(Handle *) noexcept override;
@@ -233,19 +244,30 @@ ircd::db::database::cache final
 	size_t GetUsage(Handle *) const noexcept override;
 	size_t GetPinnedUsage() const noexcept override;
 	void DisownData() noexcept override;
+	#ifndef IRCD_DB_HAS_CACHE_ITEMHELPER
 	void ApplyToAllCacheEntries(callback, bool thread_safe) noexcept override;
+	#endif
 	void EraseUnRefEntries() noexcept override;
 	std::string GetPrintableOptions() const noexcept override;
 	#ifdef IRCD_DB_HAS_CACHE_GETCHARGE
 	size_t GetCharge(Handle *) const noexcept override;
 	#endif
-	#ifdef IRCD_DB_HAS_CACHE_GETDELETER
+	#if defined(IRCD_DB_HAS_CACHE_GETDELETER) && !defined(IRCD_DB_HAS_CACHE_ITEMHELPER)
 	DeleterFn GetDeleter(Handle *) const noexcept override;
 	#endif
-	#ifdef IRCD_DB_HAS_CACHE_APPLYTOALL
+	#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+	using callbackstd = std::function<void (const Slice &, ObjectPtr, size_t, const CacheItemHelper *)>;
+	void ApplyToAllEntries(const callbackstd &, const ApplyToAllEntriesOptions &) noexcept override;
+	#elif defined(IRCD_DB_HAS_CACHE_APPLYTOALL)
 	using callbackstd = std::function<void (const Slice &, void *, size_t, DeleterFn)>;
 	void ApplyToAllEntries(const callbackstd &, const ApplyToAllEntriesOptions &) noexcept override;
 	#endif
+	#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+	const CacheItemHelper *GetCacheItemHelper(Handle *) const noexcept override;
+	#endif
+	#ifdef IRCD_DB_HAS_CACHE_ASYNC
+	Handle *CreateStandalone(const Slice &, ObjectPtr, const CacheItemHelper *, size_t, bool) noexcept override;
+	#endif
 
 	cache(database *const &,
 	      std::shared_ptr<struct database::stats>,

ircd/db_database.cc

@@ -81,17 +81,87 @@ ircd::db::auto_deletion
 	{ "persist",  false                   },
 };
 
-/// Conf item dictates whether databases will be opened in slave mode; this
-/// is a recent feature of RocksDB which may not be available. It allows two
-/// instances of a database, so long as only one is not opened as a slave.
-decltype(ircd::db::open_slave)
-ircd::db::open_slave
+/// Gather statistics about files on open to inform the compaction algorithm.
+/// This can be disabled to prevent touching a lot of files on open, but it's
+/// unclear when/if that information will be gathered to ever inform compactor.
+decltype(ircd::db::open_stats)
+ircd::db::open_stats
 {
-	{ "name",     "ircd.db.open.slave" },
-	{ "default",  false                },
+	{ "name",     "ircd.db.open.stats" },
+	{ "default",  true                 },
 	{ "persist",  false                },
 };
 
+/// Paranoid suite toggle. This allows coarse control over the rest of the
+/// configuration from here. If this is set to false, all other paranoid confs
+/// will default to false; note that each conf can still be explicitly set.
+decltype(ircd::db::paranoid)
+ircd::db::paranoid
+{
+	{ "name",     "ircd.db.paranoid.enable" },
+	{ "default",  true                      },
+	{ "persist",  false                     },
+};
+
+/// General paranoid checks; enabled by rocksdb by default. Disabling this
+/// might implicitly override some of the other paranoid features configurable
+/// here and disable them within rocksdb.
+decltype(ircd::db::paranoid_checks)
+ircd::db::paranoid_checks
+{
+	{ "name",     "ircd.db.paranoid.checks" },
+	{ "default",  bool(paranoid)            },
+	{ "persist",  false                     },
+};
+
+/// Check file sizes on open. This is expensive because it opens every file
+/// with only mediocre value for finding corruption in practice.
+decltype(ircd::db::paranoid_size)
+ircd::db::paranoid_size
+{
+	{ "name",     "ircd.db.paranoid.size" },
+	{ "default",  false                   },
+	{ "persist",  false                   },
+};
+
+/// Check UUIDs of SST files against the manifest.
+decltype(ircd::db::paranoid_uuid)
+ircd::db::paranoid_uuid
+{
+	{ "name",     "ircd.db.paranoid.uuid" },
+	{ "default",  bool(paranoid)          },
+	{ "persist",  false                   },
+};
+
+/// Check WAL against the manifest for corruption.
+decltype(ircd::db::paranoid_wal)
+ircd::db::paranoid_wal
+{
+	{ "name",     "ircd.db.paranoid.wal"  },
+	{ "default",  bool(paranoid)          },
+	{ "persist",  false                   },
+};
+
+/// Check every SST after writing it. This is expensive and rocksdb doesn't
+/// enable it in their own defaults.
+decltype(ircd::db::paranoid_sst)
+ircd::db::paranoid_sst
+{
+	{ "name",     "ircd.db.paranoid.sst" },
+	{ "default",  false                  },
+	{ "persist",  false                  },
+};
+
+/// Check LSM after changing it. This is claimed to be cheap by rocksdb and
+/// they enable it by default.
+decltype(ircd::db::paranoid_lsm)
+ircd::db::paranoid_lsm
+{
+	{ "name",     "ircd.db.paranoid.lsm" },
+	{ "default",  bool(paranoid)         },
+	{ "persist",  false                  },
+};
+
 void
 ircd::db::sync(database &d)
 {
@@ -859,7 +929,7 @@ try
 }
 ,slave
 {
-	db::open_slave
+	ircd::slave
 }
 ,read_only
 {
@@ -968,8 +1038,9 @@ try
 	opts->bytes_per_sync = 0;
 	opts->wal_bytes_per_sync = 0;
 
-	// This prevents the creation of additional SST files and lots of I/O on
-	// either DB open and close.
+	// We need flush during shutdown or data which bypasses the WAL might get
+	// desynchronized from data which doesn't (or simply lost). Flush during
+	// recovery seems to happen anyway but setting to avoid is probably better.
 	opts->avoid_flush_during_recovery = true;
 	opts->avoid_flush_during_shutdown = false;
 
@@ -994,6 +1065,19 @@ try
 	// Use the determined direct io value for writes as well.
 	//opts->use_direct_io_for_flush_and_compaction = opts->use_direct_reads;
 
+	// Additional optimizations at the cost of trading some added risk.
+	opts->skip_stats_update_on_db_open = !open_stats;
+	opts->paranoid_checks = bool(paranoid_checks);
+	#ifdef IRCD_DB_HAS_SKIP_CHECKSIZE
+	opts->skip_checking_sst_file_sizes_on_db_open = !paranoid_size;
+	#endif
+	#ifdef IRCD_DB_HAS_MANIFEST_WALS
+	opts->track_and_verify_wals_in_manifest = bool(paranoid_wal);
+	#endif
+	#ifdef IRCD_DB_HAS_MANIFEST_UUIDS
+	opts->verify_sst_unique_id_in_manifest = bool(paranoid_uuid);
+	#endif
+
 	// Default corruption tolerance is zero-tolerance; db fails to open with
 	// error by default to inform the user. The rest of the options are
 	// various relaxations for how to proceed.
@@ -1202,7 +1286,7 @@ try
 
 	// If the directory does not exist, though rocksdb will create it, we can
 	// avoid scaring the user with an error log message if we just do that..
-	if(opts->create_if_missing && !fs::is_dir(path) && !ircd::write_avoid)
+	if(opts->create_if_missing && !fs::is_dir(path) && !ircd::maintenance && !ircd::read_only)
 		fs::mkdir(path);
 
 	// Announce attempt before usual point where exceptions are thrown
@@ -1745,6 +1829,11 @@ ircd::db::database::column::column(database &d,
 }
 ,options_preconfiguration{[this]
 {
+	// Setup sundry
+	this->options.report_bg_io_stats = true;
+	this->options.paranoid_file_checks = bool(paranoid_sst);
+	this->options.force_consistency_checks = bool(paranoid_lsm);
+
 	// If possible, deduce comparator based on type given in descriptor
 	if(!this->descriptor->cmp.less)
 	{
@@ -1780,11 +1869,6 @@ ircd::db::database::column::column(database &d,
 	// Set the compaction filter
 	this->options.compaction_filter = &this->cfilter;
 
-	//this->options.paranoid_file_checks = true;
-
-	// More stats reported by the rocksdb.stats property.
-	this->options.report_bg_io_stats = true;
-
 	// Set filter reductions for this column. This means we expect a key to exist.
 	this->options.optimize_filters_for_hits = this->descriptor->expect_queries_hit;
 
@@ -1985,7 +2069,7 @@ ircd::db::database::column::column(database &d,
 	// Setup the cache for compressed assets.
 	const auto &cache_size_comp(this->descriptor->cache_size_comp);
 	if(cache_size_comp != 0)
-		table_opts.block_cache_compressed = std::make_shared<database::cache>(this->d, this->stats, this->allocator, this->name, cache_size_comp);
+		; //table_opts.block_cache_compressed = std::make_shared<database::cache>(this->d, this->stats, this->allocator, this->name, cache_size_comp);
 
 	// Setup the bloom filter.
 	const auto &bloom_bits(this->descriptor->bloom_bits);
@@ -2059,7 +2143,7 @@ ircd::db::database::column::column(database &d,
 		this->cmp.Name(),
 		this->options.prefix_extractor? this->prefix.Name() : "none",
 		table_opts.block_cache? "YES": "NO",
-		table_opts.block_cache_compressed? "YES": "NO",
+		"NO", //table_opts.block_cache_compressed? "YES": "NO",
 		this->descriptor->bloom_bits,
 		int(this->options.compression),
 		this->descriptor->name
@@ -3182,6 +3266,15 @@ const noexcept
 		c->Name();
 }
 
+#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+rocksdb::Status
+ircd::db::database::cache::Insert(const Slice &key,
+                                  ObjectPtr value,
+                                  const CacheItemHelper *const helper,
+                                  size_t charge,
+                                  Handle **const handle,
+                                  Priority priority)
+#else
 rocksdb::Status
 ircd::db::database::cache::Insert(const Slice &key,
                                   void *const value,
@@ -3189,6 +3282,7 @@ ircd::db::database::cache::Insert(const Slice &key,
                                   deleter del,
                                   Handle **const handle,
                                   Priority priority)
+#endif
 noexcept
 {
 	using rocksdb::Tickers;
@@ -3198,7 +3292,11 @@ noexcept
 
 	const rocksdb::Status &ret
 	{
+		#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+		c->Insert(key, value, helper, charge, handle, priority)
+		#else
 		c->Insert(key, value, charge, del, handle, priority)
+		#endif
 	};
 
 	stats->recordTick(Tickers::BLOCK_CACHE_ADD, ret.ok());
@@ -3223,9 +3321,26 @@ noexcept
 	return ret;
 }
 
+#if defined(IRCD_DB_HAS_CACHE_ASYNC)
+rocksdb::Cache::Handle *
+ircd::db::database::cache::Lookup(const Slice &key,
+                                  const CacheItemHelper *const helper,
+                                  CreateContext *const cc,
+                                  Priority pri,
+                                  Statistics *const statistics)
+#elif defined(IRCD_DB_HAS_CACHE_ITEMHELPER)
+rocksdb::Cache::Handle *
+ircd::db::database::cache::Lookup(const Slice &key,
+                                  const CacheItemHelper *const helper,
+                                  CreateContext *const cc,
+                                  Priority pri,
+                                  bool wait,
+                                  Statistics *const statistics)
+#else
 rocksdb::Cache::Handle *
 ircd::db::database::cache::Lookup(const Slice &key,
                                   Statistics *const statistics)
+#endif
 noexcept
 {
 	using rocksdb::Tickers;
@@ -3247,7 +3362,13 @@ noexcept
 
 	auto *const &ret
 	{
+		#if defined(IRCD_DB_HAS_CACHE_ASYNC)
+		c->Lookup(key, helper, cc, pri, statistics)
+		#elif defined(IRCD_DB_HAS_CACHE_ITEMHELPER)
+		c->Lookup(key, helper, cc, pri, wait, statistics)
+		#else
 		c->Lookup(key, s)
+		#endif
 	};
 
 	// Rocksdb's LRUCache stats are broke. The statistics ptr is null and
@@ -3379,6 +3500,7 @@ noexcept
 	return c->DisownData();
 }
 
+#ifndef IRCD_DB_HAS_CACHE_ITEMHELPER
 void
 ircd::db::database::cache::ApplyToAllCacheEntries(callback cb,
                                                   bool thread_safe)
@@ -3387,6 +3509,7 @@ noexcept
 	assert(bool(c));
 	return c->ApplyToAllCacheEntries(cb, thread_safe);
 }
+#endif
 
 void
 ircd::db::database::cache::EraseUnRefEntries()
@@ -3414,7 +3537,7 @@ const noexcept
 }
 #endif
 
-#ifdef IRCD_DB_HAS_CACHE_GETDELETER
+#if defined(IRCD_DB_HAS_CACHE_GETDELETER) && !defined(IRCD_DB_HAS_CACHE_ITEMHELPER)
 rocksdb::Cache::DeleterFn
 ircd::db::database::cache::GetDeleter(Handle *const h)
 const noexcept
@@ -3435,6 +3558,30 @@ noexcept
 }
 #endif
 
+#ifdef IRCD_DB_HAS_CACHE_ITEMHELPER
+const rocksdb::Cache::CacheItemHelper *
+ircd::db::database::cache::GetCacheItemHelper(Handle *const h)
+const noexcept
+{
+	assert(bool(c));
+	return c->GetCacheItemHelper(h);
+}
+#endif
+
+#if defined(IRCD_DB_HAS_CACHE_ASYNC)
+rocksdb::Cache::Handle *
+ircd::db::database::cache::CreateStandalone(const Slice &key,
+                                            ObjectPtr ptr,
+                                            const CacheItemHelper *const helper,
+                                            size_t charge,
+                                            bool allow_uncharged)
+noexcept
+{
+	assert(bool(c));
+	return c->CreateStandalone(key, ptr, helper, charge, allow_uncharged);
+}
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////
 //
 // database::compaction_filter

ircd/db_env.cc

@@ -3265,7 +3265,11 @@ catch(const std::exception &e)
 	return error_to_status{e};
 }
 
-#ifdef IRCD_DB_HAS_ENV_MULTIREAD
+#if defined(IRCD_DB_HAS_ENV_MULTIREAD) && !defined(IRCD_DB_HAS_MULTIREAD_FIX)
+#warning "RocksDB MultiRead is buggy in this version. Please upgrade to 6.12.6+"
+#endif
+
+#if defined(IRCD_DB_HAS_ENV_MULTIREAD)
 rocksdb::Status
 ircd::db::database::env::random_access_file::MultiRead(rocksdb::ReadRequest *const req,
                                                        size_t num)

ircd/db_has.h

@@ -73,12 +73,30 @@
 	#define IRCD_DB_HAS_ENV_FILESYSTEM
 #endif
 
+#if ROCKSDB_MAJOR > 6 \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 8) \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 8 && ROCKSDB_PATCH >= 1)
+	#define IRCD_DB_HAS_SKIP_CHECKSIZE
+#endif
+
 #if ROCKSDB_MAJOR > 6 \
 || (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 10) \
 || (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 10 && ROCKSDB_PATCH >= 0)
 	#define IRCD_DB_HAS_MULTIGET_DIRECT
 #endif
 
+#if ROCKSDB_MAJOR > 6 \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 10) \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 10 && ROCKSDB_PATCH >= 1)
+	#define IRCD_DB_HAS_CONFIG_OPTIONS
+#endif
+
+#if ROCKSDB_MAJOR > 6 \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 12) \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 12 && ROCKSDB_PATCH >= 6)
+	#define IRCD_DB_HAS_MULTIREAD_FIX
+#endif
+
 #if ROCKSDB_MAJOR > 6 \
 || (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 12) \
 || (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 12 && ROCKSDB_PATCH >= 6)
@@ -92,9 +110,9 @@
 #endif
 
 #if ROCKSDB_MAJOR > 6 \
-|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 16) \
-|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 16 && ROCKSDB_PATCH >= 3)
-	#define IRCD_DB_HAS_MANIFEST_WRITE_NOWAL
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 15) \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 15 && ROCKSDB_PATCH >= 2)
+	#define IRCD_DB_HAS_MANIFEST_WALS
 #endif
 
 #if ROCKSDB_MAJOR > 6 \
@@ -140,8 +158,44 @@
 	#define IRCD_DB_HAS_FORCED_BLOBGC
 #endif
 
+#if ROCKSDB_MAJOR > 7 \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR > 2) \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR == 2 && ROCKSDB_PATCH >= 0)
+	#define IRCD_DB_HAS_SECONDARY_CACHE
+#endif
+
+#if ROCKSDB_MAJOR > 7 \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR > 7) \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR == 7 && ROCKSDB_PATCH >= 2)
+	#define IRCD_DB_HAS_MANIFEST_UUIDS
+#endif
+
 #if ROCKSDB_MAJOR > 7 \
 || (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR > 8) \
 || (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR == 8 && ROCKSDB_PATCH >= 3)
 	#define IRCD_DB_HAS_ROUND_ROBIN_TTL
 #endif
+
+#if ROCKSDB_MAJOR > 7 \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR > 10) \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR == 10 && ROCKSDB_PATCH >= 0)
+	#define IRCD_DB_HAS_CACHE_ITEMHELPER
+#endif
+
+#if ROCKSDB_MAJOR > 7 \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR > 10) \
+|| (ROCKSDB_MAJOR == 7 && ROCKSDB_MINOR == 10 && ROCKSDB_PATCH >= 2)
+	#define IRCD_DB_HAS_REFIT_LEVEL
+#endif
+
+#if ROCKSDB_MAJOR > 8 \
+|| (ROCKSDB_MAJOR == 8 && ROCKSDB_MINOR > 0) \
+|| (ROCKSDB_MAJOR == 8 && ROCKSDB_MINOR == 0 && ROCKSDB_PATCH >= 0)
+	#define IRCD_DB_HAS_CACHE_WRAPPER
+#endif
+
+#if ROCKSDB_MAJOR > 8 \
+|| (ROCKSDB_MAJOR == 8 && ROCKSDB_MINOR > 1) \
+|| (ROCKSDB_MAJOR == 8 && ROCKSDB_MINOR == 1 && ROCKSDB_PATCH >= 1)
+	#define IRCD_DB_HAS_CACHE_ASYNC
+#endif

ircd/fs_aio.cc

@@ -114,15 +114,13 @@ size_t
 ircd::fs::aio::init::query_max_events()
 {
 	size_t ret(0);
-	fs::dev::for_each("disk", [&ret]
+	fs::dev::blk::for_each("disk", [&ret]
 	(const ulong &id, const fs::dev::blk &device)
 	{
 		ret = std::clamp
 		(
 			device.queue_depth, ret, MAX_EVENTS
 		);
-
-		return true;
 	});
 
 	if(!ret)
@@ -691,7 +689,7 @@ ircd::fs::aio::system::handle_descriptor
 	// appears to excessively allocate and deallocate 120 bytes; this
 	// is a simple asynchronous operation, we can do better (and perhaps
 	// even better than this below).
-	[](ios::handler &handler, const size_t &size) -> void *
+	[](ios::handler &handler, const size_t size) -> void *
 	{
 		assert(ircd::fs::aio::system);
 		auto &system(*ircd::fs::aio::system);
@@ -707,7 +705,7 @@ ircd::fs::aio::system::handle_descriptor
 	},
 
 	// no deallocation; satisfied by class member unique_ptr
-	[](ios::handler &handler, void *const &ptr, const size_t &size) {},
+	[](ios::handler &handler, void *const ptr, const size_t size) {},
 
 	// continuation
 	true,

ircd/fs_dev.cc

@@ -10,55 +10,6 @@
 
 #include <RB_INC_SYS_SYSMACROS_H
 
-bool
-ircd::fs::dev::for_each(const blk_closure &closure)
-{
-	return for_each(string_view{}, closure);
-}
-
-bool
-ircd::fs::dev::for_each(const string_view &type,
-                        const blk_closure &closure)
-{
-	for(const auto &dir : fs::ls(blk::BASE_PATH)) try
-	{
-		const auto &[major, minor]
-		{
-			split(filename(path_scratch, dir), ':')
-		};
-
-		if(!major || !minor)
-			continue;
-
-		const ulong id
-		{
-			dev::id({lex_cast<ulong>(major), lex_cast<ulong>(minor)})
-		};
-
-		char dtbuf[32];
-		if(type && blk::devtype(dtbuf, id) != type)
-			continue;
-
-		if(!closure(id, blk(id)))
-			return false;
-	}
-	catch(const ctx::interrupted &)
-	{
-		throw;
-	}
-	catch(const std::exception &e)
-	{
-		log::error
-		{
-			log, "%s :%s",
-			dir,
-			e.what(),
-		};
-	}
-
-	return true;
-}
-
 ircd::string_view
 ircd::fs::dev::sysfs(const mutable_buffer &out,
                      const ulong &id,
@@ -123,6 +74,59 @@ ircd::fs::dev::blk::BASE_PATH
 	"/sys/dev/block"
 };
 
+bool
+ircd::fs::dev::blk::for_each(const closure &closure)
+{
+	return for_each(string_view{}, closure);
+}
+
+bool
+ircd::fs::dev::blk::for_each(const string_view &type,
+                             const closure &closure)
+{
+	for(const auto &dir : fs::ls(blk::BASE_PATH)) try
+	{
+		const auto &[major, minor]
+		{
+			split(filename(path_scratch, dir), ':')
+		};
+
+		if(!major || !minor)
+			continue;
+
+		const ulong id
+		{
+			dev::id({lex_cast<ulong>(major), lex_cast<ulong>(minor)})
+		};
+
+		char dtbuf[32];
+		if(type && blk::devtype(dtbuf, id) != type)
+			continue;
+
+		if(!closure(id, blk(id)))
+			return false;
+	}
+	catch(const ctx::interrupted &)
+	{
+		throw;
+	}
+	catch(const std::exception &e)
+	{
+		log::error
+		{
+			log, "%s :%s",
+			dir,
+			e.what(),
+		};
+	}
+
+	return true;
+}
+
+//
+// dev::blk::blk
+//
+
 ircd::fs::dev::blk::blk(const ulong &id)
 :type
 {
@@ -227,3 +231,100 @@ ircd::fs::dev::blk::devtype(const mutable_buffer &buf,
 
 	return ret;
 }
+
+//
+// dev::stats
+//
+
+ircd::fs::dev::stats
+ircd::fs::dev::stats::get(const major_minor &id)
+{
+	stats ret;
+	for_each([&id, &ret]
+	(const auto &stats)
+	{
+		if(stats.id == id)
+		{
+			ret = stats;
+			return false;
+		}
+		else return true;
+	});
+
+	return ret;
+}
+
+bool
+ircd::fs::dev::stats::for_each(const closure &closure)
+{
+	thread_local char buf[16_KiB];
+
+	const fs::fd fd
+	{
+		"/proc/diskstats", fs::fd::opts
+		{
+			.mode = std::ios::in,
+		},
+	};
+
+	fs::read_opts opts;
+	opts.aio = false;
+	const string_view read
+	{
+		fs::read(fd, buf, opts)
+	};
+
+	return tokens(read, '\n', [&closure]
+	(const auto &line)
+	{
+		return closure(stats(line));
+	});
+}
+
+//
+// dev::stats::stats
+//
+
+ircd::fs::dev::stats::stats(const string_view &line)
+{
+	string_view item[20];
+	const auto items
+	{
+		tokens(line, ' ', item)
+	};
+
+	id.first = lex_cast<uint64_t>(item[0]);
+	id.second = lex_cast<uint64_t>(item[1]);
+	strlcpy(name, item[2]);
+
+	read = lex_cast<uint64_t>(item[3]);
+	read_merged = lex_cast<uint64_t>(item[4]);
+	read_sectors = lex_cast<uint64_t>(item[5]);
+	read_time = lex_cast<milliseconds>(item[6]);
+
+	write = lex_cast<uint64_t>(item[7]);
+	write_merged = lex_cast<uint64_t>(item[8]);
+	write_sectors = lex_cast<uint64_t>(item[9]);
+	write_time = lex_cast<milliseconds>(item[10]);
+
+	io_current = lex_cast<uint64_t>(item[11]);
+	io_time = lex_cast<milliseconds>(item[12]);
+	io_weighted_time = lex_cast<milliseconds>(item[13]);
+
+	if(items <= 14)
+		return;
+
+	discard = lex_cast<uint64_t>(item[14]);
+	discard_merged = lex_cast<uint64_t>(item[15]);
+	discard_sectors = lex_cast<uint64_t>(item[16]);
+	discard_time = lex_cast<milliseconds>(item[17]);
+
+	if(items <= 18)
+		return;
+
+	flush = lex_cast<uint64_t>(item[18]);
+	flush_time = lex_cast<milliseconds>(item[19]);
+
+	if(items <= 20)
+		return;
+}

ircd/http.cc

@@ -151,7 +151,7 @@ namespace ircd::http::parser
 	const rule<string_view> reason     { str                                             ,"reason" };
 
 	const rule<string_view> head_key   { raw[+(char_ - (illegal | ws | colon))]        ,"head key" };
-	const rule<string_view> head_val   { str                                         ,"head value" };
+	const rule<string_view> head_val   { -str                                        ,"head value" };
 	const rule<http::header> header    { head_key >> *ws >> colon >> *ws >> head_val     ,"header" };
 	const rule<> headers               { header % (*ws >> CRLF)                         ,"headers" };
 

ircd/info.cc

@@ -175,7 +175,7 @@ ircd::info::dump_cpu_info_x86()
 	const auto append{[&support]
 	(const string_view &name, const bool &avail, const int &enable)
 	{
-		strlcat(support, fmt::bsprintf<64>
+		strlcat(support, fmt::bsprintf<32>
 		{
 			" %s:%c%s",
 			name,
@@ -193,7 +193,14 @@ ircd::info::dump_cpu_info_x86()
 	append("avx", hardware::x86::avx, simd::support::avx);
 	append("avx2", hardware::x86::avx2, simd::support::avx2);
 	append("avx512f", hardware::x86::avx512f, simd::support::avx512f);
-	append("constant_tsc", hardware::x86::tsc_constant, -1);
+
+	strlcat(support, fmt::bsprintf<32>
+	{
+		"%s%s%s",
+		hardware::x86::tsc? " tsc": "",
+		hardware::x86::tsc_constant? ":constant": "",
+		hardware::x86::tsc_nonstop?  ":nonstop": "",
+	});
 
 	log::info
 	{
@@ -415,25 +422,31 @@ ircd::info::hardware::x86::avx
 decltype(ircd::info::hardware::x86::avx2)
 ircd::info::hardware::x86::avx2
 {
-	bool(features & (uint128_t(1) << (32 + 5)))
+	bool(extended_features & (uint128_t(1) << (32 + 5)))
 };
 
 decltype(ircd::info::hardware::x86::avx512f)
 ircd::info::hardware::x86::avx512f
 {
-	bool(features & (uint128_t(1) << (32 + 16)))
+	bool(extended_features & (uint128_t(1) << (32 + 16)))
 };
 
 decltype(ircd::info::hardware::x86::tsc)
 ircd::info::hardware::x86::tsc
 {
-	bool(features & (uint128_t(1) << 4))
+	bool(features & (uint128_t(1) << (96 + 4)))
 };
 
 decltype(ircd::info::hardware::x86::tsc_constant)
 ircd::info::hardware::x86::tsc_constant
 {
-	bool(_apmi & (uint128_t(1) << (8)))
+	bool(_apmi & (uint128_t(1) << (96 + 8)))
+};
+
+decltype(ircd::info::hardware::x86::tsc_nonstop)
+ircd::info::hardware::x86::tsc_nonstop
+{
+	bool(_apmi & (uint128_t(1) << (96 + 24)))
 };
 
 #ifdef __x86_64__

ircd/ios.cc

@@ -39,6 +39,14 @@ ircd::ios::primary;
 decltype(ircd::ios::main)
 ircd::ios::main;
 
+/// Indicates the user asio::executor is initialized.
+decltype(ircd::ios::user_available)
+ircd::ios::user_available;
+
+/// Indicates the main asio::executor is initialized.
+decltype(ircd::ios::main_available)
+ircd::ios::main_available;
+
 decltype(ircd::boost_version_api)
 ircd::boost_version_api
 {
@@ -71,12 +79,14 @@ ircd::ios::init(asio::executor &&user)
 
 	// Save a reference handle to the user's executor.
 	ios::user = user;
+	ios::user_available = bool(ios::user);
 
 	// Create our strand instance.
 	ios::primary.emplace(static_cast<asio::io_context &>(user.context()));
 
 	// Set the reference handle to our executor.
 	ios::main = *ios::primary;
+	ios::main_available = bool(ios::main);
 }
 
 [[using gnu: cold]]
@@ -180,13 +190,6 @@ ircd::ios::forked_parent()
 	#endif
 }
 
-bool
-ircd::ios::available()
-noexcept
-{
-	return bool(main);
-}
-
 //
 // emption
 //
@@ -480,13 +483,6 @@ ircd::ios::descriptor::stats::stats(descriptor &d)
 		{ "name", stats_name(d, "free_bytes") },
 	},
 }
-,slice_total
-{
-	value + items++,
-	{
-		{ "name", stats_name(d, "slice_total") },
-	},
-}
 ,slice_last
 {
 	value + items++,
@@ -494,11 +490,11 @@ ircd::ios::descriptor::stats::stats(descriptor &d)
 		{ "name", stats_name(d, "slice_last") },
 	},
 }
-,latency_total
+,slice_total
 {
 	value + items++,
 	{
-		{ "name", stats_name(d, "latency_total") },
+		{ "name", stats_name(d, "slice_total") },
 	},
 }
 ,latency_last
@@ -508,6 +504,13 @@ ircd::ios::descriptor::stats::stats(descriptor &d)
 		{ "name", stats_name(d, "latency_last") },
 	},
 }
+,latency_total
+{
+	value + items++,
+	{
+		{ "name", stats_name(d, "latency_total") },
+	},
+}
 {
 	assert(items <= (sizeof(value) / sizeof(value[0])));
 }
@@ -531,7 +534,7 @@ ircd::ios::handler::epoch;
 
 [[gnu::cold]]
 bool
-ircd::ios::handler::fault(handler *const &handler)
+ircd::ios::handler::fault(handler *const handler)
 noexcept
 {
 	assert(handler && handler->descriptor);
@@ -568,7 +571,7 @@ noexcept
 
 [[gnu::hot]]
 void
-ircd::ios::handler::leave(handler *const &handler)
+ircd::ios::handler::leave(handler *const handler)
 noexcept
 {
 	assert(handler && handler->descriptor);
@@ -619,19 +622,14 @@ noexcept
 
 [[gnu::hot]]
 void
-ircd::ios::handler::enter(handler *const &handler)
+ircd::ios::handler::enter(handler *const handler)
 noexcept
 {
-	assert(!handler::current);
-	handler::current = handler;
-	++handler::epoch;
-
 	assert(handler && handler->descriptor);
 	auto &descriptor(*handler->descriptor);
 
 	assert(descriptor.stats);
 	auto &stats(*descriptor.stats);
-	++stats.calls;
 
 	const auto last_ts
 	{
@@ -640,6 +638,11 @@ noexcept
 
 	stats.latency_last = handler->ts - last_ts;
 	stats.latency_total += stats.latency_last;
+	++stats.calls;
+
+	assert(!handler::current);
+	handler::current = handler;
+	++handler::epoch;
 
 	if constexpr(profile::logging)
 		log::logf
@@ -696,7 +699,6 @@ ircd::ios::dispatch::dispatch(descriptor &descriptor,
 	latch.wait();
 }
 
-[[gnu::hot]]
 ircd::ios::dispatch::dispatch(descriptor &descriptor,
                               defer_t,
                               std::function<void ()> function)
@@ -725,7 +727,6 @@ ircd::ios::dispatch::dispatch(descriptor &descriptor,
 	};
 }
 
-[[gnu::hot]]
 ircd::ios::dispatch::dispatch(descriptor &descriptor,
                               std::function<void ()> function)
 {

ircd/ircd.cc

@@ -107,25 +107,21 @@ ircd::maintenance
 	}
 };
 
-/// Coarse mode indicator for degraded operation known as "write-avoid" which
-/// is similar to read_only but not hard-enforced. Writes may still occur,
-/// such as those manually triggered by an admin. All subsystems and background
-/// tasks otherwise depart from normal operation to avoid writes.
-decltype(ircd::write_avoid)
-ircd::write_avoid
+/// Conf item dictates whether databases will be opened in slave mode; this
+/// is a recent feature of RocksDB which may not be available. It allows
+/// multiple processes to open the same database in a single-writer multiple
+/// reader configuration.
+///
+/// Originally this was intended as a maintenance mode to explore another live
+/// running server's database. However it now allows listeners which can serve
+/// as load-balanced mirrors and caches over a database shared at the fs level
+/// locally or with nfs/ceph/intermezzo etc.
+decltype(ircd::slave)
+ircd::slave
 {
-	{
-		{ "name",     "ircd.write_avoid"   },
-		{ "default",  false                },
-		{ "persist",  false                },
-	},
-	[](conf::item<void> &)
-	{
-		if(!write_avoid)
-			return;
-
-		maintenance.set("true");
-	}
+	{ "name",     "ircd.slave"   },
+	{ "default",  false          },
+	{ "persist",  false          },
 };
 
 /// Coarse mode declaration for read-only behavior. All subsystems and feature
@@ -145,7 +141,11 @@ ircd::read_only
 		if(!read_only)
 			return;
 
-		write_avoid.set("true");
+		// Not implict maintenance mode when slave mode is set.
+		if(slave)
+			return;
+
+		maintenance.set("true");
 	}
 };