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