diff options
Diffstat (limited to 'boost/chrono/detail/inlined/posix/thread_clock.hpp')
-rw-r--r-- | boost/chrono/detail/inlined/posix/thread_clock.hpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/boost/chrono/detail/inlined/posix/thread_clock.hpp b/boost/chrono/detail/inlined/posix/thread_clock.hpp new file mode 100644 index 0000000000..5ad41f84e3 --- /dev/null +++ b/boost/chrono/detail/inlined/posix/thread_clock.hpp @@ -0,0 +1,88 @@ +// boost thread_clock.cpp -----------------------------------------------------------// + +// Copyright Beman Dawes 1994, 2006, 2008 +// Copyright Vicente J. Botet Escriba 2009-2011 + +// 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 <sys/times.h> +# include <unistd.h> + +namespace boost { namespace chrono { + + thread_clock::time_point thread_clock::now( ) BOOST_NOEXCEPT + { + struct timespec ts; +#if defined CLOCK_THREAD_CPUTIME_ID + // get the timespec associated to the thread clock + if ( ::clock_gettime( CLOCK_THREAD_CPUTIME_ID, &ts ) ) +#else + // get the current thread + pthread_t pth=pthread_self(); + // get the clock_id associated to the current thread + clockid_t clock_id; + pthread_getcpuclockid(pth, &clock_id); + // get the timespec associated to the thread clock + if ( ::clock_gettime( clock_id, &ts ) ) +#endif + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } + + // transform to nanoseconds + return time_point(duration( + static_cast<thread_clock::rep>( ts.tv_sec ) * 1000000000 + ts.tv_nsec)); + + } + +#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING + thread_clock::time_point thread_clock::now( system::error_code & ec ) + { + struct timespec ts; +#if defined CLOCK_THREAD_CPUTIME_ID + // get the timespec associated to the thread clock + if ( ::clock_gettime( CLOCK_THREAD_CPUTIME_ID, &ts ) ) +#else + // get the current thread + pthread_t pth=pthread_self(); + // get the clock_id associated to the current thread + clockid_t clock_id; + pthread_getcpuclockid(pth, &clock_id); + // get the timespec associated to the thread clock + if ( ::clock_gettime( clock_id, &ts ) ) +#endif + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception( + system::system_error( + errno, + 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(); + } + // transform to nanoseconds + return time_point(duration( + static_cast<thread_clock::rep>( ts.tv_sec ) * 1000000000 + ts.tv_nsec)); + + } +#endif +} } |