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// 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 <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
} }
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