282 lines
8.9 KiB
Plaintext
282 lines
8.9 KiB
Plaintext
// boost process_timer.cpp -----------------------------------------------------------//
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// Copyright Beman Dawes 1994, 2006, 2008
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// Copyright 2009-2010 Vicente J. Botet Escriba
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// Copyright (c) Microsoft Corporation 2014
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// Distributed under the Boost Software License, Version 1.0.
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// See http://www.boost.org/LICENSE_1_0.txt
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// See http://www.boost.org/libs/chrono for documentation.
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//--------------------------------------------------------------------------------------//
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#ifndef BOOST_CHRONO_DETAIL_INLINED_WIN_PROCESS_CLOCK_HPP
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#define BOOST_CHRONO_DETAIL_INLINED_WIN_PROCESS_CLOCK_HPP
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#include <boost/chrono/config.hpp>
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#include <boost/chrono/process_cpu_clocks.hpp>
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#include <cassert>
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#include <time.h>
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#include <boost/assert.hpp>
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#include <boost/detail/winapi/get_last_error.hpp>
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#include <boost/detail/winapi/get_current_process.hpp>
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#if BOOST_PLAT_WINDOWS_DESKTOP
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#include <boost/detail/winapi/get_process_times.hpp>
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#endif
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namespace boost
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{
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namespace chrono
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{
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process_real_cpu_clock::time_point process_real_cpu_clock::now() BOOST_NOEXCEPT
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{
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clock_t c = ::clock();
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if ( c == clock_t(-1) ) // error
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{
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BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
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}
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typedef ratio_divide<giga, ratio<CLOCKS_PER_SEC> >::type R;
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return time_point(
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duration(static_cast<rep>(c)*R::num/R::den)
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);
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}
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#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
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process_real_cpu_clock::time_point process_real_cpu_clock::now(
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system::error_code & ec)
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{
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clock_t c = ::clock();
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if ( c == clock_t(-1) ) // error
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{
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boost::throw_exception(
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system::system_error(
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errno,
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BOOST_CHRONO_SYSTEM_CATEGORY,
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"chrono::process_real_cpu_clock" ));
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}
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if (!BOOST_CHRONO_IS_THROWS(ec))
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{
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ec.clear();
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}
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typedef ratio_divide<giga, ratio<CLOCKS_PER_SEC> >::type R;
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return time_point(
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duration(static_cast<rep>(c)*R::num/R::den)
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);
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}
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#endif
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#if BOOST_PLAT_WINDOWS_DESKTOP
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process_user_cpu_clock::time_point process_user_cpu_clock::now() BOOST_NOEXCEPT
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{
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// note that Windows uses 100 nanosecond ticks for FILETIME
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boost::detail::winapi::FILETIME_ creation, exit, user_time, system_time;
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if ( boost::detail::winapi::GetProcessTimes(
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boost::detail::winapi::GetCurrentProcess(), &creation, &exit,
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&system_time, &user_time ) )
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{
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return time_point(duration(
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((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
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| user_time.dwLowDateTime) * 100
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));
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}
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else
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{
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BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
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return time_point();
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}
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}
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#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
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process_user_cpu_clock::time_point process_user_cpu_clock::now(
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system::error_code & ec)
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{
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// note that Windows uses 100 nanosecond ticks for FILETIME
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boost::detail::winapi::FILETIME_ creation, exit, user_time, system_time;
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if ( boost::detail::winapi::GetProcessTimes(
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boost::detail::winapi::GetCurrentProcess(), &creation, &exit,
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&system_time, &user_time ) )
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{
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if (!BOOST_CHRONO_IS_THROWS(ec))
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{
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ec.clear();
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}
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return time_point(duration(
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((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
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| user_time.dwLowDateTime) * 100
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));
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}
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else
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{
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boost::detail::winapi::DWORD_ cause = boost::detail::winapi::GetLastError();
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if (BOOST_CHRONO_IS_THROWS(ec))
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{
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boost::throw_exception(
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system::system_error(
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cause,
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BOOST_CHRONO_SYSTEM_CATEGORY,
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"chrono::process_user_cpu_clock" ));
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}
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else
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{
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ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
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return time_point();
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}
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}
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}
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#endif
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process_system_cpu_clock::time_point process_system_cpu_clock::now() BOOST_NOEXCEPT
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{
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// note that Windows uses 100 nanosecond ticks for FILETIME
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boost::detail::winapi::FILETIME_ creation, exit, user_time, system_time;
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if ( boost::detail::winapi::GetProcessTimes(
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boost::detail::winapi::GetCurrentProcess(), &creation, &exit,
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&system_time, &user_time ) )
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{
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return time_point(duration(
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((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
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| system_time.dwLowDateTime) * 100
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));
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}
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else
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{
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BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
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return time_point();
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}
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}
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#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
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process_system_cpu_clock::time_point process_system_cpu_clock::now(
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system::error_code & ec)
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{
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// note that Windows uses 100 nanosecond ticks for FILETIME
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boost::detail::winapi::FILETIME_ creation, exit, user_time, system_time;
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if ( boost::detail::winapi::GetProcessTimes(
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boost::detail::winapi::GetCurrentProcess(), &creation, &exit,
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&system_time, &user_time ) )
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{
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if (!BOOST_CHRONO_IS_THROWS(ec))
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{
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ec.clear();
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}
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return time_point(duration(
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((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
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| system_time.dwLowDateTime) * 100
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));
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}
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else
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{
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boost::detail::winapi::DWORD_ cause = boost::detail::winapi::GetLastError();
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if (BOOST_CHRONO_IS_THROWS(ec))
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{
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boost::throw_exception(
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system::system_error(
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cause,
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BOOST_CHRONO_SYSTEM_CATEGORY,
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"chrono::process_system_cpu_clock" ));
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}
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else
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{
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ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
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return time_point();
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}
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}
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}
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#endif
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process_cpu_clock::time_point process_cpu_clock::now() BOOST_NOEXCEPT
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{
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// note that Windows uses 100 nanosecond ticks for FILETIME
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boost::detail::winapi::FILETIME_ creation, exit, user_time, system_time;
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if ( boost::detail::winapi::GetProcessTimes(
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boost::detail::winapi::GetCurrentProcess(), &creation, &exit,
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&system_time, &user_time ) )
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{
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time_point::rep r(process_real_cpu_clock::now().time_since_epoch().count()
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,
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((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
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| user_time.dwLowDateTime
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) * 100,
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((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
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| system_time.dwLowDateTime
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) * 100
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);
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return time_point(duration(r));
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}
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else
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{
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BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
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return time_point();
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}
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}
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#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
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process_cpu_clock::time_point process_cpu_clock::now(
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system::error_code & ec )
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{
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// note that Windows uses 100 nanosecond ticks for FILETIME
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boost::detail::winapi::FILETIME_ creation, exit, user_time, system_time;
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if ( boost::detail::winapi::GetProcessTimes(
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boost::detail::winapi::GetCurrentProcess(), &creation, &exit,
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&system_time, &user_time ) )
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{
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if (!BOOST_CHRONO_IS_THROWS(ec))
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{
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ec.clear();
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}
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time_point::rep r(process_real_cpu_clock::now().time_since_epoch().count()
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,
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((static_cast<process_user_cpu_clock::rep>(user_time.dwHighDateTime) << 32)
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| user_time.dwLowDateTime
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) * 100,
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((static_cast<process_system_cpu_clock::rep>(system_time.dwHighDateTime) << 32)
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| system_time.dwLowDateTime
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) * 100
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);
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return time_point(duration(r));
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}
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else
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{
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boost::detail::winapi::DWORD_ cause = boost::detail::winapi::GetLastError();
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if (BOOST_CHRONO_IS_THROWS(ec))
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{
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boost::throw_exception(
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system::system_error(
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cause,
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BOOST_CHRONO_SYSTEM_CATEGORY,
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"chrono::process_cpu_clock" ));
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}
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else
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{
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ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
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return time_point();
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}
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}
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}
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#endif
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#endif
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} // namespace chrono
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} // namespace boost
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#endif
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