mirror of
https://github.com/matrix-construct/construct
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398fb026b0
ircd::info: Sample hardware cache characteristics.
198 lines
5.7 KiB
C++
198 lines
5.7 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_INFO_H
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// legacy
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extern "C" const char *const ircd_name;
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extern "C" const char *const ircd_version;
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/// Information & metadata about the library.
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namespace ircd::info
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{
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struct line;
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struct versions;
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// Util
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void dump();
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// Primary information
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extern const string_view name;
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extern const string_view version;
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extern const string_view user_agent;
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extern const string_view server_agent;
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// Extended information
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extern const string_view credits[];
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// Build information
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extern const string_view tag;
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extern const string_view branch;
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extern const string_view commit;
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extern const time_t configured_time;
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extern const string_view configured;
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extern const string_view compiled;
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// Toolchain and library information
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extern const versions gnuc_version;
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extern const versions clang_version;
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extern const versions glibc_version_api;
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extern const versions glibc_version_abi;
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extern const versions glibcxx_version_api;
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extern const versions sd6_version;
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// System configuration / information
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extern const size_t page_size;
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extern const size_t iov_max;
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extern const size_t aio_max;
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extern const size_t aio_reqprio_max;
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extern const size_t clk_tck;
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extern const size_t total_ram;
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extern const size_t total_swap;
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// Host & third-party information
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#ifdef HAVE_SYS_UTSNAME_H
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extern const ::utsname utsname;
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#endif
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// Kernel information
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extern const string_view kernel_name;
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extern const string_view kernel_release;
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extern const versions kernel_version;
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extern const intptr_t vsyscall_p;
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extern const intptr_t vdso_p;
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// Execution information
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extern const time_t startup_time;
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extern const string_view startup;
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extern const uint64_t random;
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extern const uint uid, euid;
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extern const uint gid, egid;
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extern const bool secure;
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}
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namespace ircd::info::hardware
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{
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extern const size_t max_align;
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extern const size_t hardware_concurrency;
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extern const size_t destructive_interference;
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extern const size_t constructive_interference;
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extern const size_t inst_blksz, data_blksz, uni_blksz;
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extern const size_t l1i, l1i_line, l1i_tag, l1i_assoc;
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extern const size_t l1i_tlb, l1i_tlb_assoc;
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extern const size_t l1d, l1d_line, l1d_tag, l1d_assoc;
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extern const size_t l1d_tlb, l1d_tlb_assoc;
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extern const size_t l2, l2_line, l2_tag, l2_assoc;
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extern const size_t l2_itlb, l2_itlb_assoc;
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extern const size_t l2_dtlb, l2_dtlb_assoc;
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extern const size_t l3, l3_line, l3_tag, l3_assoc;
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extern const size_t page_size;
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extern const ulonglong cap[2];
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}
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namespace ircd::info::hardware::x86
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{
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uint8_t llc_assoc(const uint8_t) noexcept;
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uint128_t cpuid(const uint &leaf, const uint &subleaf) noexcept;
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extern const uint128_t manufact;
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extern const uint128_t features;
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extern const uint128_t extended_features;
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extern const uint128_t _manufact;
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extern const uint128_t _features;
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extern const uint128_t _l1cache;
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extern const uint128_t _llcache;
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extern const uint128_t _apmi;
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extern const uint128_t _lwp;
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extern const string_view vendor;
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extern const bool mmx, sse, sse2;
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extern const bool sse3, ssse3, sse4_1, sse4_2;
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extern const bool avx, avx2;
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};
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/// Instances of `versions` create a dynamic version registry identifying
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/// third-party dependencies throughout the project and its loaded modules.
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///
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/// Create a static instance of this class in a definition file or module
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/// which has access to the version information of the dependency. Often there
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/// can be two version identifiers for a dependency, one for headers and the
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/// other for dynamically loaded shared object. In that case, create two
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/// instances of this class with the same name.
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///
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struct ircd::info::versions
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:instance_list<versions>
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{
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/// Our own name for the dependency.
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string_view name;
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/// Set the type to either API or ABI to indicate where this version
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/// information has been sourced. Defaults to API.
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enum type {API, ABI} type {API};
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/// If the version number is a single (likely monotonic) integer.
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long monotonic {0};
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/// Alternative semantic version number.
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std::array<long, 3> semantic {0};
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/// Version string buffer. Copy any provided version string here.
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char string[128] {0};
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/// Convenience access to read the semantic version numbers.
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auto &operator[](const int &idx) const;
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/// Convenience access to read the monotonic integer; note that if zero
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/// the semantic major number is read instead.
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explicit operator const long &() const;
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/// Convenience access to read the string
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explicit operator string_view() const;
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versions(const string_view &name,
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const enum type &type = type::API,
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const long &monotonic = 0,
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const std::array<long, 3> &semantic = {0L},
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const string_view &string = {});
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versions(const string_view &name,
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const enum type &type,
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const long &monotonic,
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const std::array<long, 3> &semantic,
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const std::function<void (versions &, const mutable_buffer &)> &generator);
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versions() = default;
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versions(versions &&) = delete;
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versions(const versions &) = delete;
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~versions() noexcept;
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};
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inline ircd::info::versions::operator
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const long &()
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const
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{
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return monotonic?: semantic[0];
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}
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inline ircd::info::versions::operator
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ircd::string_view()
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const
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{
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return string;
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}
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inline auto &
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ircd::info::versions::operator[](const int &idx)
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const
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{
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return semantic.at(idx);
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}
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