mirror of
https://github.com/matrix-construct/construct
synced 2024-08-25 19:12:08 +02:00
308 lines
5 KiB
C++
308 lines
5 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) 2016-2019 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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#include <RB_INC_SYS_SYSCALL_H
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#include <RB_INC_SYS_IOCTL_H
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#include <RB_INC_SYS_MMAN_H
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#include <RB_INC_SYS_RESOURCE_H
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#include <boost/chrono/chrono.hpp>
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#include <boost/chrono/process_cpu_clocks.hpp>
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decltype(ircd::prof::log)
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ircd::prof::log
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{
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"prof"
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};
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#ifndef __linux__
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[[gnu::weak]]
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decltype(ircd::prof::psi::supported)
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ircd::prof::psi::supported
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{
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false
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};
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#endif
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uint64_t
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ircd::prof::time_real()
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noexcept
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{
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return boost::chrono::process_real_cpu_clock::now().time_since_epoch().count();
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}
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uint64_t
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ircd::prof::time_kern()
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noexcept
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{
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return boost::chrono::process_system_cpu_clock::now().time_since_epoch().count();
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}
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uint64_t
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ircd::prof::time_user()
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noexcept
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{
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return boost::chrono::process_user_cpu_clock::now().time_since_epoch().count();
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}
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uint64_t
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__attribute__((weak))
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ircd::prof::time_thrd()
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{
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return 0;
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}
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uint64_t
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__attribute__((weak))
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ircd::prof::time_proc()
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{
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return 0;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// prof/vg.h
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//
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// note: further definitions calling valgrind isolated to ircd/vg.cc
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//
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// prof::vg::enable
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//
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ircd::prof::vg::enable::enable()
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noexcept
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{
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start();
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}
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ircd::prof::vg::enable::~enable()
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noexcept
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{
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stop();
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}
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//
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// prof::vg::disable
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//
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ircd::prof::vg::disable::disable()
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noexcept
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{
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stop();
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}
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ircd::prof::vg::disable::~disable()
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noexcept
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{
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start();
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// prof/syscall_usage_warning.h
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//
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#ifdef RB_DEBUG
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ircd::prof::syscall_usage_warning::~syscall_usage_warning()
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noexcept
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{
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const uint64_t total
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{
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timer.stopped?
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timer.at():
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timer.sample()
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};
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if(likely(!total))
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return;
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thread_local char buf[512];
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const string_view reason
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{
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fmt::vsprintf
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{
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buf, fmt, ap
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}
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};
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thread_local char tmbuf[64];
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log::dwarning
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{
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log, "[%s] context id:%lu watchdog :system call took %s :%s",
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ctx::current?
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name(ctx::cur()):
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ios::handler::current?
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name(*ios::handler::current):
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"*"_sv,
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ctx::current?
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id(ctx::cur()):
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0,
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pretty_nanoseconds(tmbuf, total, true),
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reason
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};
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}
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#endif
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///////////////////////////////////////////////////////////////////////////////
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//
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// prof/syscall_timer.h
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//
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//
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// syscall_timer
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//
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ircd::prof::syscall_timer::syscall_timer()
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noexcept
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:started
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{
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time_kern()
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}
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,stopped
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{
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0UL
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}
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{
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}
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uint64_t
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ircd::prof::syscall_timer::sample()
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{
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stopped = time_kern();
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return at();
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}
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uint64_t
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ircd::prof::syscall_timer::at()
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const
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{
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return stopped - started;
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}
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//
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// syscall_timer::high_resolution
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//
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ircd::prof::syscall_timer::high_resolution::high_resolution()
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noexcept
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:started
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{
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resource(prof::sample).at(resource::TIME_KERN)
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}
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,stopped
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{
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0UL
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}
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{
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}
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uint64_t
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ircd::prof::syscall_timer::high_resolution::sample()
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{
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stopped = resource(prof::sample).at(resource::TIME_KERN);
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return at();
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}
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uint64_t
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ircd::prof::syscall_timer::high_resolution::at()
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const
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{
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return stopped - started;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// prof/times.h
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//
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ircd::prof::times::times(sample_t)
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:real{}
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,kern{}
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,user{}
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{
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const auto tp
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{
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boost::chrono::process_cpu_clock::now()
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};
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const auto d
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{
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tp.time_since_epoch()
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};
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this->real = d.count().real;
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this->kern = d.count().system;
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this->user = d.count().user;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// prof/resource.h
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//
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ircd::prof::resource
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ircd::prof::operator-(const resource &a,
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const resource &b)
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{
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resource ret;
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std::transform(begin(a), end(a), begin(b), begin(ret), std::minus<resource::value_type>{});
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return ret;
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}
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ircd::prof::resource
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ircd::prof::operator+(const resource &a,
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const resource &b)
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{
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resource ret;
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std::transform(begin(a), end(a), begin(b), begin(ret), std::plus<resource::value_type>{});
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return ret;
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}
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ircd::prof::resource &
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ircd::prof::operator-=(resource &a,
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const resource &b)
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{
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for(size_t i(0); i < a.size(); ++i)
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a[i] -= b[i];
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return a;
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}
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ircd::prof::resource &
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ircd::prof::operator+=(resource &a,
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const resource &b)
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{
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for(size_t i(0); i < a.size(); ++i)
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a[i] += b[i];
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return a;
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}
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//
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// resource::resource
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//
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ircd::prof::resource::resource(sample_t)
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{
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struct ::rusage ru;
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syscall(::getrusage, RUSAGE_SELF, &ru);
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at(TIME_USER) = ru.ru_utime.tv_sec * 1000000UL + ru.ru_utime.tv_usec;
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at(TIME_KERN) = ru.ru_stime.tv_sec * 1000000UL + ru.ru_stime.tv_usec;
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at(RSS_MAX) = ru.ru_maxrss;
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at(PF_MINOR) = ru.ru_minflt;
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at(PF_MAJOR) = ru.ru_majflt;
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at(BLOCK_IN) = ru.ru_inblock;
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at(BLOCK_OUT) = ru.ru_oublock;
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at(SCHED_YIELD) = ru.ru_nvcsw;
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at(SCHED_PREEMPT) = ru.ru_nivcsw;
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}
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