diff options
Diffstat (limited to 'boost/chrono/detail/inlined/mac/process_cpu_clocks.hpp')
-rw-r--r-- | boost/chrono/detail/inlined/mac/process_cpu_clocks.hpp | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/boost/chrono/detail/inlined/mac/process_cpu_clocks.hpp b/boost/chrono/detail/inlined/mac/process_cpu_clocks.hpp new file mode 100644 index 0000000000..48753bdfc7 --- /dev/null +++ b/boost/chrono/detail/inlined/mac/process_cpu_clocks.hpp @@ -0,0 +1,331 @@ +// boost process_cpu_clocks.cpp -----------------------------------------------------------// + +// Copyright Beman Dawes 1994, 2006, 2008 +// Copyright Vicente J. Botet Escriba 2009 + +// 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/process_cpu_clocks.hpp> +#include <boost/assert.hpp> + +#include <sys/time.h> //for gettimeofday and timeval +#include <sys/times.h> //for times +# include <unistd.h> + +namespace boost +{ + namespace chrono + { + namespace chrono_detail + { + + inline long tick_factor() // multiplier to convert ticks + // to nanoseconds; -1 if unknown + { + static long factor = 0; + if (!factor) + { + if ((factor = ::sysconf(_SC_CLK_TCK)) <= 0) + factor = -1; + else + { + BOOST_ASSERT(factor <= 1000000000l); // doesn't handle large ticks + factor = 1000000000l / factor; // compute factor + if (!factor) + factor = -1; + } + } + return factor; + } + } + + + process_real_cpu_clock::time_point process_real_cpu_clock::now() BOOST_NOEXCEPT + { +#if 0 + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + return time_point(nanoseconds(c * factor)); + } else + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } + } + return time_point(); +#else + clock_t c = ::clock(); + if (c == clock_t(-1)) // error + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } + return time_point( + duration(c*(1000000000l/CLOCKS_PER_SEC)) + ); +#endif + } + +#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING + process_real_cpu_clock::time_point process_real_cpu_clock::now(system::error_code & ec) + { + +#if 0 + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_real_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + if (!BOOST_CHRONO_IS_THROWS(ec)) + { + ec.clear(); + } + return time_point(nanoseconds(c * factor)); + } else + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_real_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } + } +#else + clock_t c = ::clock(); + if (c == clock_t(-1)) // error + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_real_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } + return time_point( + duration(c*(1000000000l/CLOCKS_PER_SEC)) + ); + +#endif + + } +#endif + +#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING + process_user_cpu_clock::time_point process_user_cpu_clock::now(system::error_code & ec) + { + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_user_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + if (!BOOST_CHRONO_IS_THROWS(ec)) + { + ec.clear(); + } + return time_point(nanoseconds((tm.tms_utime + tm.tms_cutime) * factor)); + } else + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_user_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } + } + } +#endif + + process_user_cpu_clock::time_point process_user_cpu_clock::now() BOOST_NOEXCEPT + { + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + return time_point(nanoseconds((tm.tms_utime + tm.tms_cutime) + * factor)); + } else + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } + } + return time_point(); + } + process_system_cpu_clock::time_point process_system_cpu_clock::now() BOOST_NOEXCEPT + { + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + return time_point(nanoseconds((tm.tms_stime + tm.tms_cstime) + * factor)); + } else + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } + } + return time_point(); + } + +#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING + process_system_cpu_clock::time_point process_system_cpu_clock::now(system::error_code & ec) + { + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_system_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + if (!BOOST_CHRONO_IS_THROWS(ec)) + { + ec.clear(); + } + return time_point(nanoseconds((tm.tms_stime + tm.tms_cstime) * factor)); + } else + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_system_cpu_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } + } + } +#endif + + process_cpu_clock::time_point process_cpu_clock::now() BOOST_NOEXCEPT + { + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + time_point::rep + r(c * factor, (tm.tms_utime + tm.tms_cutime) * factor, (tm.tms_stime + + tm.tms_cstime) * factor); + return time_point(duration(r)); + } else + { + BOOST_ASSERT(0 && "Boost::Chrono - Internal Error"); + } + } + return time_point(); + } + +#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING + process_cpu_clock::time_point process_cpu_clock::now(system::error_code & ec) + { + + tms tm; + clock_t c = ::times(&tm); + if (c == clock_t(-1)) // error + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } else + { + long factor = chrono_detail::tick_factor(); + if (factor != -1) + { + time_point::rep + r(c * factor, (tm.tms_utime + tm.tms_cutime) * factor, (tm.tms_stime + + tm.tms_cstime) * factor); + return time_point(duration(r)); + } else + { + if (BOOST_CHRONO_IS_THROWS(ec)) + { + boost::throw_exception(system::system_error(errno, BOOST_CHRONO_SYSTEM_CATEGORY, "chrono::process_clock")); + } else + { + ec.assign(errno, BOOST_CHRONO_SYSTEM_CATEGORY); + return time_point(); + } + } + } + + } +#endif + + } +} |