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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/chrono/detail/inlined/posix/thread_clock.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/chrono/detail/inlined/posix/thread_clock.hpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/chrono/detail/inlined/posix/thread_clock.hpp b/src/third_party/boost-1.69.0/boost/chrono/detail/inlined/posix/thread_clock.hpp new file mode 100644 index 00000000000..a2a2d9cf65d --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/chrono/detail/inlined/posix/thread_clock.hpp @@ -0,0 +1,92 @@ +// 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 <boost/assert.hpp> + +#if !defined(__VXWORKS__) +# include <sys/times.h> +#endif +# include <pthread.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::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(); + } + // transform to nanoseconds + return time_point(duration( + static_cast<thread_clock::rep>( ts.tv_sec ) * 1000000000 + ts.tv_nsec)); + + } +#endif +} } |