From 1f947f982cee97f885cbdd72a2f9648be3161766 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sun, 31 Jul 2022 02:46:05 -0700
Subject: [PATCH] ircd::gpt: Cache pipe::code instance in shared_ptr for task
 reuse.

---
 include/ircd/gpt/pipe/pipe.h | 1 +
 include/ircd/gpt/task.h      | 2 +-
 ircd/gpt.cc                  | 3 ++-
 ircd/gpt_pipe.cc             | 4 ++++
 4 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/ircd/gpt/pipe/pipe.h b/include/ircd/gpt/pipe/pipe.h
index 9462dd4b4..2487b5b81 100644
--- a/include/ircd/gpt/pipe/pipe.h
+++ b/include/ircd/gpt/pipe/pipe.h
@@ -21,6 +21,7 @@ namespace ircd::gpt::pipe
 	struct prof;
 
 	extern conf::item<size_t> queue_cycles;
+	extern std::shared_ptr<code> default_code;
 };
 
 #include "code.h"
diff --git a/include/ircd/gpt/task.h b/include/ircd/gpt/task.h
index 6926d26ff..096c02a6b 100644
--- a/include/ircd/gpt/task.h
+++ b/include/ircd/gpt/task.h
@@ -34,7 +34,7 @@ struct ircd::gpt::task
 	gpt::ctrl *ctrl {nullptr};
 
 	/// Pipe code
-	std::unique_ptr<pipe::code> code;
+	std::shared_ptr<pipe::code> code;
 
 	/// Pipe model
 	std::unique_ptr<pipe::model> model;
diff --git a/ircd/gpt.cc b/ircd/gpt.cc
index 22512b15c..cb1e6207b 100644
--- a/ircd/gpt.cc
+++ b/ircd/gpt.cc
@@ -251,7 +251,8 @@ try
 }
 ,code
 {
-	std::make_unique<pipe::code>()
+	pipe::default_code?:
+		(pipe::default_code = std::make_shared<pipe::code>())
 }
 ,model
 {
diff --git a/ircd/gpt_pipe.cc b/ircd/gpt_pipe.cc
index efb841a8c..ffa179645 100644
--- a/ircd/gpt_pipe.cc
+++ b/ircd/gpt_pipe.cc
@@ -16,6 +16,9 @@ namespace ircd::gpt::pipe
 	extern const ircd::run::changed quit_handler;
 }
 
+decltype(ircd::gpt::pipe::default_code)
+ircd::gpt::pipe::default_code;
+
 decltype(ircd::gpt::pipe::queue_cycles)
 ircd::gpt::pipe::queue_cycles
 {
@@ -51,6 +54,7 @@ noexcept
 
 	cl::sync();
 	ctx::yield();
+	pipe::default_code.reset();
 }
 
 //