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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 <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::system::system_category(),
- "chrono::thread_clock" ));
- }
- else
- {
- ec.assign( errno, ::boost::system::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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