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construct/include/ircd/info.h

161 lines
4.6 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 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_INFO_H
// legacy
extern "C" const char *const ircd_name;
extern "C" const char *const ircd_version;
/// Information & metadata about the library.
namespace ircd::info
{
struct line;
struct versions;
// Build information
extern const string_view tag;
extern const string_view branch;
extern const string_view commit;
extern const time_t configured_time;
extern const time_t startup_time;
extern const string_view configured;
extern const string_view compiled;
extern const string_view startup;
// Platform information
extern const size_t max_align;
extern const size_t hardware_concurrency;
extern const size_t destructive_interference;
extern const size_t constructive_interference;
extern const std::array<uint128_t, 8> cpuid;
extern const string_view cpuvendor;
// System information
extern const size_t page_size;
extern const size_t iov_max;
extern const size_t aio_max;
extern const size_t aio_reqprio_max;
extern const size_t clk_tck;
extern const size_t rlimit_as;
extern const size_t rlimit_data;
extern const size_t rlimit_rss;
extern const size_t rlimit_nofile;
extern const size_t rlimit_rttime;
// Host & third-party information
#ifdef HAVE_SYS_UTSNAME_H
extern const ::utsname utsname;
#endif
// Kernel information
extern const string_view kernel_name;
extern const string_view kernel_release;
extern const versions kernel_version;
// Toolchain and library information
extern const versions gnuc_version;
extern const versions clang_version;
extern const versions glibc_version_api;
extern const versions glibc_version_abi;
extern const versions glibcxx_version_api;
extern const versions sd6_version;
// Primary information
extern const string_view name;
extern const string_view version;
extern const string_view user_agent;
extern const string_view server_agent;
// Extended information
extern const string_view credits[];
// Util
void dump();
}
/// Instances of `versions` create a dynamic version registry identifying
/// third-party dependencies throughout the project and its loaded modules.
///
/// Create a static instance of this class in a definition file or module
/// which has access to the version information of the dependency. Often there
/// can be two version identifiers for a dependency, one for headers and the
/// other for dynamically loaded shared object. In that case, create two
/// instances of this class with the same name.
///
struct ircd::info::versions
:instance_list<versions>
{
/// Our own name for the dependency.
string_view name;
/// Set the type to either API or ABI to indicate where this version
/// information has been sourced. Defaults to API.
enum type {API, ABI} type {API};
/// If the version number is a single (likely monotonic) integer.
long monotonic {0};
/// Alternative semantic version number.
std::array<long, 3> semantic {0};
/// Version string buffer. Copy any provided version string here.
char string[128] {0};
/// Convenience access to read the semantic version numbers.
auto &operator[](const int &idx) const;
/// Convenience access to read the monotonic integer; note that if zero
/// the semantic major number is read instead.
explicit operator const long &() const;
/// Convenience access to read the string
explicit operator string_view() const;
versions(const string_view &name,
const enum type &type = type::API,
const long &monotonic = 0,
const std::array<long, 3> &semantic = {0L},
const string_view &string = {});
versions(const string_view &name,
const enum type &type,
const long &monotonic,
const std::array<long, 3> &semantic,
const std::function<void (versions &, const mutable_buffer &)> &generator);
versions() = default;
versions(versions &&) = delete;
versions(const versions &) = delete;
~versions() noexcept;
};
inline ircd::info::versions::operator
const long &()
const
{
return monotonic?: semantic[0];
}
inline ircd::info::versions::operator
ircd::string_view()
const
{
return string;
}
inline auto &
ircd::info::versions::operator[](const int &idx)
const
{
return semantic.at(idx);
}