| // 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 |
| } } |