355 lines
9.8 KiB
Plaintext
355 lines
9.8 KiB
Plaintext
|
// boost process_cpu_clocks.cpp -----------------------------------------------------------//
|
||
|
|
|
||
|
|
// Copyright Beman Dawes 1994, 2006, 2008
|
||
|
|
// Copyright Vicente J. Botet Escriba 2009
|
||
|
|
|
||
|
|
// 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.
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------------------------//
|
||
|
|
|
||
|
|
#include <boost/chrono/config.hpp>
|
||
|
|
#include <boost/chrono/process_cpu_clocks.hpp>
|
||
|
|
#include <boost/assert.hpp>
|
||
|
|
|
||
|
|
#include <sys/times.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <time.h> // for clock_gettime
|
||
|
|
|
||
|
|
|
||
|
|
namespace boost { namespace chrono {
|
||
|
|
namespace chrono_detail
|
||
|
|
{
|
||
|
|
inline nanoseconds::rep tick_factor() // multiplier to convert ticks
|
||
|
|
// to nanoseconds; -1 if unknown
|
||
|
|
{
|
||
|
|
long factor = 0;
|
||
|
|
if ( !factor )
|
||
|
|
{
|
||
|
|
if ( (factor = ::sysconf( _SC_CLK_TCK )) <= 0 )
|
||
|
|
factor = -1;
|
||
|
|
else
|
||
|
|
{
|
||
|
|
BOOST_ASSERT( factor <= 1000000000l ); // doesn't handle large ticks
|
||
|
|
factor = 1000000000l / factor; // compute factor
|
||
|
|
if ( !factor ) factor = -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return factor;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
process_real_cpu_clock::time_point process_real_cpu_clock::now() BOOST_NOEXCEPT
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
return time_point(
|
||
|
|
nanoseconds(c*chrono_detail::tick_factor()));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
|
||
|
|
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
|
||
|
|
process_real_cpu_clock::time_point process_real_cpu_clock::now(
|
||
|
|
system::error_code & ec)
|
||
|
|
{
|
||
|
|
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_real_cpu_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
if (!BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
ec.clear();
|
||
|
|
}
|
||
|
|
return time_point(
|
||
|
|
nanoseconds(c*chrono_detail::tick_factor()));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_real_cpu_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
process_user_cpu_clock::time_point process_user_cpu_clock::now() BOOST_NOEXCEPT
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
return time_point(
|
||
|
|
nanoseconds((tm.tms_utime + tm.tms_cutime)*chrono_detail::tick_factor()));
|
||
|
|
}
|
||
|
|
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)
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_user_cpu_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
if (!BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
ec.clear();
|
||
|
|
}
|
||
|
|
return time_point(
|
||
|
|
nanoseconds((tm.tms_utime + tm.tms_cutime)*chrono_detail::tick_factor()));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_user_cpu_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
process_system_cpu_clock::time_point process_system_cpu_clock::now() BOOST_NOEXCEPT
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
return time_point(
|
||
|
|
nanoseconds((tm.tms_stime + tm.tms_cstime)*chrono_detail::tick_factor()));
|
||
|
|
}
|
||
|
|
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)
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_system_cpu_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
if (!BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
ec.clear();
|
||
|
|
}
|
||
|
|
return time_point(
|
||
|
|
nanoseconds((tm.tms_stime + tm.tms_cstime)*chrono_detail::tick_factor()));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_system_cpu_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
process_cpu_clock::time_point process_cpu_clock::now() BOOST_NOEXCEPT
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
nanoseconds::rep factor = chrono_detail::tick_factor();
|
||
|
|
if ( factor != -1 )
|
||
|
|
{
|
||
|
|
time_point::rep r(
|
||
|
|
c*factor,
|
||
|
|
(tm.tms_utime + tm.tms_cutime)*factor,
|
||
|
|
(tm.tms_stime + tm.tms_cstime)*factor);
|
||
|
|
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 )
|
||
|
|
{
|
||
|
|
tms tm;
|
||
|
|
clock_t c = ::times( &tm );
|
||
|
|
if ( c == clock_t(-1) ) // error
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ( chrono_detail::tick_factor() != -1 )
|
||
|
|
{
|
||
|
|
time_point::rep r(
|
||
|
|
c*chrono_detail::tick_factor(),
|
||
|
|
(tm.tms_utime + tm.tms_cutime)*chrono_detail::tick_factor(),
|
||
|
|
(tm.tms_stime + tm.tms_cstime)*chrono_detail::tick_factor());
|
||
|
|
return time_point(duration(r));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
||
|
|
{
|
||
|
|
boost::throw_exception(
|
||
|
|
system::system_error(
|
||
|
|
errno,
|
||
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
||
|
|
"chrono::process_clock" ));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
||
|
|
return time_point();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
} }
|