| // boost process_timer.cpp -----------------------------------------------------------// |
| |
| // Copyright Beman Dawes 1994, 2006, 2008 |
| // Copyright 2009-2010 Vicente J. Botet Escriba |
| |
| // 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. |
| |
| //--------------------------------------------------------------------------------------// |
| #ifndef BOOST_CHRONO_DETAIL_INLINED_WIN_PROCESS_CLOCK_HPP |
| #define BOOST_CHRONO_DETAIL_INLINED_WIN_PROCESS_CLOCK_HPP |
| |
| #include <boost/chrono/config.hpp> |
| #include <boost/chrono/system_clocks.hpp> |
| #include <boost/chrono/process_times.hpp> |
| #include <cassert> |
| |
| #include <boost/detail/win/GetLastError.hpp> |
| #include <boost/detail/win/GetCurrentProcess.hpp> |
| #include <boost/detail/win/GetProcessTimes.hpp> |
| |
| namespace boost |
| { |
| namespace chrono |
| { |
| |
| void process_clock::now( process_times & times_, system::error_code & ec ) |
| { |
| |
| // note that Windows uses 100 nanosecond ticks for FILETIME |
| boost::detail::win32::FILETIME_ creation, exit, user_time, system_time; |
| |
| times_.real = duration( steady_clock::now().time_since_epoch().count() ); |
| |
| #ifdef UNDER_CE |
| // Windows CE does not support GetProcessTimes |
| assert( 0 && "GetProcessTimes not supported under Windows CE" ); |
| times_.real = times_.system = times_.user = nanoseconds(-1); |
| #else |
| if ( boost::detail::win32::GetProcessTimes( |
| boost::detail::win32::GetCurrentProcess(), &creation, &exit, |
| &system_time, &user_time ) ) |
| { |
| if (!BOOST_CHRONO_IS_THROWS(ec)) |
| { |
| ec.clear(); |
| } |
| times_.user = duration( |
| ((static_cast<time_point::rep>(user_time.dwHighDateTime) << 32) |
| | user_time.dwLowDateTime) * 100 ); |
| |
| times_.system = duration( |
| ((static_cast<time_point::rep>(system_time.dwHighDateTime) << 32) |
| | system_time.dwLowDateTime) * 100 ); |
| } |
| else |
| { |
| boost::detail::win32::DWORD_ cause = boost::detail::win32::GetLastError(); |
| if (BOOST_CHRONO_IS_THROWS(ec)) |
| { |
| boost::throw_exception( |
| system::system_error( |
| cause, |
| BOOST_CHRONO_SYSTEM_CATEGORY, |
| "chrono::process_clock" )); |
| } |
| else |
| { |
| ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY ); |
| times_.real = times_.system = times_.user = nanoseconds(-1); |
| } |
| } |
| #endif |
| } |
| } // namespace chrono |
| } // namespace boost |
| |
| #endif |