93 lines
3.4 KiB
Plaintext
93 lines
3.4 KiB
Plaintext
// boost thread_clock.cpp -----------------------------------------------------------//
|
|
|
|
// Copyright Beman Dawes 1994, 2006, 2008
|
|
// Copyright Vicente J. Botet Escriba 2009-2011
|
|
// Copyright Christopher Brown 2013
|
|
|
|
// 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/thread_clock.hpp>
|
|
#include <cassert>
|
|
#include <boost/assert.hpp>
|
|
|
|
# include <pthread.h>
|
|
# include <mach/thread_act.h>
|
|
|
|
namespace boost { namespace chrono {
|
|
|
|
thread_clock::time_point thread_clock::now( ) BOOST_NOEXCEPT
|
|
{
|
|
// get the thread port (borrowing pthread's reference)
|
|
mach_port_t port = pthread_mach_thread_np(pthread_self());
|
|
|
|
// get the thread info
|
|
thread_basic_info_data_t info;
|
|
mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
|
|
if ( thread_info(port, THREAD_BASIC_INFO, (thread_info_t)&info, &count) != KERN_SUCCESS )
|
|
{
|
|
BOOST_ASSERT(0 && "Boost::Chrono - Internal Error");
|
|
return time_point();
|
|
}
|
|
|
|
// convert to nanoseconds
|
|
duration user = duration(
|
|
static_cast<thread_clock::rep>( info.user_time.seconds ) * 1000000000
|
|
+ static_cast<thread_clock::rep>(info.user_time.microseconds ) * 1000);
|
|
|
|
duration system = duration(
|
|
static_cast<thread_clock::rep>( info.system_time.seconds ) * 1000000000
|
|
+ static_cast<thread_clock::rep>( info.system_time.microseconds ) * 1000);
|
|
|
|
return time_point( user + system );
|
|
}
|
|
|
|
#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
|
|
thread_clock::time_point thread_clock::now( system::error_code & ec )
|
|
{
|
|
// get the thread port (borrowing pthread's reference)
|
|
mach_port_t port = pthread_mach_thread_np(pthread_self());
|
|
|
|
// get the thread info
|
|
thread_basic_info_data_t info;
|
|
mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
|
|
if ( thread_info(port, THREAD_BASIC_INFO, (thread_info_t)&info, &count) != KERN_SUCCESS )
|
|
{
|
|
if (BOOST_CHRONO_IS_THROWS(ec))
|
|
{
|
|
boost::throw_exception(
|
|
system::system_error(
|
|
EINVAL,
|
|
BOOST_CHRONO_SYSTEM_CATEGORY,
|
|
"chrono::thread_clock" ));
|
|
}
|
|
else
|
|
{
|
|
ec.assign( errno, BOOST_CHRONO_SYSTEM_CATEGORY );
|
|
return time_point();
|
|
}
|
|
}
|
|
if (!BOOST_CHRONO_IS_THROWS(ec))
|
|
{
|
|
ec.clear();
|
|
}
|
|
|
|
// convert to nanoseconds
|
|
duration user = duration(
|
|
static_cast<thread_clock::rep>( info.user_time.seconds ) * 1000000000
|
|
+ static_cast<thread_clock::rep>(info.user_time.microseconds ) * 1000);
|
|
|
|
duration system = duration(
|
|
static_cast<thread_clock::rep>( info.system_time.seconds ) * 1000000000
|
|
+ static_cast<thread_clock::rep>( info.system_time.microseconds ) * 1000);
|
|
|
|
return time_point( user + system );
|
|
}
|
|
#endif
|
|
} }
|