618 lines
17 KiB
Plaintext
618 lines
17 KiB
Plaintext
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//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2013. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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//Thread launching functions are adapted from boost/detail/lightweight_thread.hpp
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//
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// boost/detail/lightweight_thread.hpp
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//
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// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
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// Copyright (c) 2008 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#ifndef BOOST_INTERPROCESS_DETAIL_OS_THREAD_FUNCTIONS_HPP
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#define BOOST_INTERPROCESS_DETAIL_OS_THREAD_FUNCTIONS_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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#include <boost/interprocess/streams/bufferstream.hpp>
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#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
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#include <cstddef>
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#include <ostream>
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#if defined(BOOST_INTERPROCESS_WINDOWS)
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# include <boost/interprocess/detail/win32_api.hpp>
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# include <process.h>
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#else
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# include <pthread.h>
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# include <unistd.h>
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# include <sched.h>
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# include <time.h>
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# ifdef BOOST_INTERPROCESS_BSD_DERIVATIVE
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//Some *BSD systems (OpenBSD & NetBSD) need sys/param.h before sys/sysctl.h, whereas
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//others (FreeBSD & Darwin) need sys/types.h
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# include <sys/types.h>
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# include <sys/param.h>
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# include <sys/sysctl.h>
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# endif
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//According to the article "C/C++ tip: How to measure elapsed real time for benchmarking"
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# if defined(CLOCK_MONOTONIC_PRECISE) //BSD
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# define BOOST_INTERPROCESS_CLOCK_MONOTONIC CLOCK_MONOTONIC_PRECISE
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# elif defined(CLOCK_MONOTONIC_RAW) //Linux
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# define BOOST_INTERPROCESS_CLOCK_MONOTONIC CLOCK_MONOTONIC_RAW
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# elif defined(CLOCK_HIGHRES) //Solaris
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# define BOOST_INTERPROCESS_CLOCK_MONOTONIC CLOCK_HIGHRES
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# elif defined(CLOCK_MONOTONIC) //POSIX (AIX, BSD, Linux, Solaris)
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# define BOOST_INTERPROCESS_CLOCK_MONOTONIC CLOCK_MONOTONIC
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# elif !defined(CLOCK_MONOTONIC) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
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# include <mach/mach_time.h> // mach_absolute_time, mach_timebase_info_data_t
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# define BOOST_INTERPROCESS_MATCH_ABSOLUTE_TIME
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# else
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# error "No high resolution steady clock in your system, please provide a patch"
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# endif
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#endif
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namespace boost {
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namespace interprocess {
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namespace ipcdetail{
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#if defined (BOOST_INTERPROCESS_WINDOWS)
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typedef unsigned long OS_process_id_t;
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typedef unsigned long OS_thread_id_t;
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struct OS_thread_t
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{
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OS_thread_t()
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: m_handle()
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{}
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void* handle() const
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{ return m_handle; }
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void* m_handle;
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};
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typedef OS_thread_id_t OS_systemwide_thread_id_t;
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//process
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inline OS_process_id_t get_current_process_id()
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{ return winapi::get_current_process_id(); }
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inline OS_process_id_t get_invalid_process_id()
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{ return OS_process_id_t(0); }
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//thread
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inline OS_thread_id_t get_current_thread_id()
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{ return winapi::get_current_thread_id(); }
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inline OS_thread_id_t get_invalid_thread_id()
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{ return OS_thread_id_t(0xffffffff); }
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inline bool equal_thread_id(OS_thread_id_t id1, OS_thread_id_t id2)
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{ return id1 == id2; }
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//return the system tick in ns
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inline unsigned long get_system_tick_ns()
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{
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unsigned long curres;
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winapi::set_timer_resolution(10000, 0, &curres);
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//Windows API returns the value in hundreds of ns
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return (curres - 1ul)*100ul;
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}
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//return the system tick in us
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inline unsigned long get_system_tick_us()
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{
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unsigned long curres;
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winapi::set_timer_resolution(10000, 0, &curres);
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//Windows API returns the value in hundreds of ns
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return (curres - 1ul)/10ul + 1ul;
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}
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typedef unsigned __int64 OS_highres_count_t;
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inline unsigned long get_system_tick_in_highres_counts()
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{
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__int64 freq;
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unsigned long curres;
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winapi::set_timer_resolution(10000, 0, &curres);
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//Frequency in counts per second
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if(!winapi::query_performance_frequency(&freq)){
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//Tick resolution in ms
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return (curres-1ul)/10000ul + 1ul;
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}
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else{
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//In femtoseconds
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__int64 count_fs = (1000000000000000LL - 1LL)/freq + 1LL;
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__int64 tick_counts = (static_cast<__int64>(curres)*100000000LL - 1LL)/count_fs + 1LL;
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return static_cast<unsigned long>(tick_counts);
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}
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}
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inline OS_highres_count_t get_current_system_highres_count()
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{
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__int64 count;
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if(!winapi::query_performance_counter(&count)){
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count = winapi::get_tick_count();
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}
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return count;
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}
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inline void zero_highres_count(OS_highres_count_t &count)
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{ count = 0; }
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inline bool is_highres_count_zero(const OS_highres_count_t &count)
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{ return count == 0; }
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template <class Ostream>
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inline Ostream &ostream_highres_count(Ostream &ostream, const OS_highres_count_t &count)
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{
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ostream << count;
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return ostream;
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}
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inline OS_highres_count_t system_highres_count_subtract(const OS_highres_count_t &l, const OS_highres_count_t &r)
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{ return l - r; }
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inline bool system_highres_count_less(const OS_highres_count_t &l, const OS_highres_count_t &r)
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{ return l < r; }
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inline bool system_highres_count_less_ul(const OS_highres_count_t &l, unsigned long r)
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{ return l < static_cast<OS_highres_count_t>(r); }
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inline void thread_sleep_tick()
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{ winapi::sleep_tick(); }
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inline void thread_yield()
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{ winapi::sched_yield(); }
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inline void thread_sleep(unsigned int ms)
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{ winapi::sleep(ms); }
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//systemwide thread
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inline OS_systemwide_thread_id_t get_current_systemwide_thread_id()
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{
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return get_current_thread_id();
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}
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inline void systemwide_thread_id_copy
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(const volatile OS_systemwide_thread_id_t &from, volatile OS_systemwide_thread_id_t &to)
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{
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to = from;
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}
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inline bool equal_systemwide_thread_id(const OS_systemwide_thread_id_t &id1, const OS_systemwide_thread_id_t &id2)
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{
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return equal_thread_id(id1, id2);
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}
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inline OS_systemwide_thread_id_t get_invalid_systemwide_thread_id()
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{
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return get_invalid_thread_id();
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}
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inline long double get_current_process_creation_time()
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{
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winapi::interprocess_filetime CreationTime, ExitTime, KernelTime, UserTime;
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winapi::get_process_times
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( winapi::get_current_process(), &CreationTime, &ExitTime, &KernelTime, &UserTime);
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typedef long double ldouble_t;
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const ldouble_t resolution = (100.0l/1000000000.0l);
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return CreationTime.dwHighDateTime*(ldouble_t(1u<<31u)*2.0l*resolution) +
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CreationTime.dwLowDateTime*resolution;
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}
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inline unsigned int get_num_cores()
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{
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winapi::system_info sysinfo;
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winapi::get_system_info( &sysinfo );
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//in Windows dw is long which is equal in bits to int
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return static_cast<unsigned>(sysinfo.dwNumberOfProcessors);
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}
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#else //#if defined (BOOST_INTERPROCESS_WINDOWS)
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typedef pthread_t OS_thread_t;
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typedef pthread_t OS_thread_id_t;
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typedef pid_t OS_process_id_t;
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struct OS_systemwide_thread_id_t
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{
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OS_systemwide_thread_id_t()
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: pid(), tid()
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{}
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OS_systemwide_thread_id_t(pid_t p, pthread_t t)
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: pid(p), tid(t)
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{}
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OS_systemwide_thread_id_t(const OS_systemwide_thread_id_t &x)
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: pid(x.pid), tid(x.tid)
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{}
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OS_systemwide_thread_id_t(const volatile OS_systemwide_thread_id_t &x)
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: pid(x.pid), tid(x.tid)
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{}
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OS_systemwide_thread_id_t & operator=(const OS_systemwide_thread_id_t &x)
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{ pid = x.pid; tid = x.tid; return *this; }
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OS_systemwide_thread_id_t & operator=(const volatile OS_systemwide_thread_id_t &x)
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{ pid = x.pid; tid = x.tid; return *this; }
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void operator=(const OS_systemwide_thread_id_t &x) volatile
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{ pid = x.pid; tid = x.tid; }
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pid_t pid;
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pthread_t tid;
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};
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inline void systemwide_thread_id_copy
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(const volatile OS_systemwide_thread_id_t &from, volatile OS_systemwide_thread_id_t &to)
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{
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to.pid = from.pid;
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to.tid = from.tid;
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}
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//process
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inline OS_process_id_t get_current_process_id()
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{ return ::getpid(); }
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inline OS_process_id_t get_invalid_process_id()
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{ return pid_t(0); }
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//thread
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inline OS_thread_id_t get_current_thread_id()
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{ return ::pthread_self(); }
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inline OS_thread_id_t get_invalid_thread_id()
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{
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static pthread_t invalid_id;
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return invalid_id;
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}
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inline bool equal_thread_id(OS_thread_id_t id1, OS_thread_id_t id2)
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{ return 0 != pthread_equal(id1, id2); }
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inline void thread_yield()
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{ ::sched_yield(); }
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#ifndef BOOST_INTERPROCESS_MATCH_ABSOLUTE_TIME
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typedef struct timespec OS_highres_count_t;
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#else
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typedef unsigned long long OS_highres_count_t;
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#endif
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inline unsigned long get_system_tick_ns()
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{
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#ifdef _SC_CLK_TCK
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long ticks_per_second =::sysconf(_SC_CLK_TCK); // ticks per sec
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if(ticks_per_second <= 0){ //Try a typical value on error
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ticks_per_second = 100;
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}
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return 999999999ul/static_cast<unsigned long>(ticks_per_second)+1ul;
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#else
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#error "Can't obtain system tick value for your system, please provide a patch"
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#endif
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}
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inline unsigned long get_system_tick_in_highres_counts()
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{
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#ifndef BOOST_INTERPROCESS_MATCH_ABSOLUTE_TIME
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return get_system_tick_ns();
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#else
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mach_timebase_info_data_t info;
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mach_timebase_info(&info);
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//ns
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return static_cast<unsigned long>
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(
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static_cast<double>(get_system_tick_ns())
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/ (static_cast<double>(info.numer) / info.denom)
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);
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#endif
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}
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//return system ticks in us
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inline unsigned long get_system_tick_us()
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{
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return (get_system_tick_ns()-1)/1000ul + 1ul;
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}
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inline OS_highres_count_t get_current_system_highres_count()
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{
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#if defined(BOOST_INTERPROCESS_CLOCK_MONOTONIC)
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struct timespec count;
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::clock_gettime(BOOST_INTERPROCESS_CLOCK_MONOTONIC, &count);
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return count;
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#elif defined(BOOST_INTERPROCESS_MATCH_ABSOLUTE_TIME)
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return ::mach_absolute_time();
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#endif
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}
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#ifndef BOOST_INTERPROCESS_MATCH_ABSOLUTE_TIME
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inline void zero_highres_count(OS_highres_count_t &count)
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{ count.tv_sec = 0; count.tv_nsec = 0; }
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inline bool is_highres_count_zero(const OS_highres_count_t &count)
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{ return count.tv_sec == 0 && count.tv_nsec == 0; }
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template <class Ostream>
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inline Ostream &ostream_highres_count(Ostream &ostream, const OS_highres_count_t &count)
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{
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ostream << count.tv_sec << "s:" << count.tv_nsec << "ns";
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return ostream;
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}
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inline OS_highres_count_t system_highres_count_subtract(const OS_highres_count_t &l, const OS_highres_count_t &r)
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{
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OS_highres_count_t res;
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if (l.tv_nsec < r.tv_nsec){
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res.tv_nsec = 1000000000 + l.tv_nsec - r.tv_nsec;
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res.tv_sec = l.tv_sec - 1 - r.tv_sec;
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}
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else{
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res.tv_nsec = l.tv_nsec - r.tv_nsec;
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res.tv_sec = l.tv_sec - r.tv_sec;
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}
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return res;
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}
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inline bool system_highres_count_less(const OS_highres_count_t &l, const OS_highres_count_t &r)
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{ return l.tv_sec < r.tv_sec || (l.tv_sec == r.tv_sec && l.tv_nsec < r.tv_nsec); }
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inline bool system_highres_count_less_ul(const OS_highres_count_t &l, unsigned long r)
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{ return !l.tv_sec && (static_cast<unsigned long>(l.tv_nsec) < r); }
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#else
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inline void zero_highres_count(OS_highres_count_t &count)
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{ count = 0; }
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inline bool is_highres_count_zero(const OS_highres_count_t &count)
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{ return count == 0; }
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template <class Ostream>
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inline Ostream &ostream_highres_count(Ostream &ostream, const OS_highres_count_t &count)
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{
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ostream << count ;
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return ostream;
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}
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inline OS_highres_count_t system_highres_count_subtract(const OS_highres_count_t &l, const OS_highres_count_t &r)
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{ return l - r; }
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inline bool system_highres_count_less(const OS_highres_count_t &l, const OS_highres_count_t &r)
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{ return l < r; }
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inline bool system_highres_count_less_ul(const OS_highres_count_t &l, unsigned long r)
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{ return l < static_cast<OS_highres_count_t>(r); }
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#endif
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inline void thread_sleep_tick()
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{
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struct timespec rqt;
|
||
|
//Sleep for the half of the tick time
|
||
|
rqt.tv_sec = 0;
|
||
|
rqt.tv_nsec = get_system_tick_ns()/2;
|
||
|
::nanosleep(&rqt, 0);
|
||
|
}
|
||
|
|
||
|
inline void thread_sleep(unsigned int ms)
|
||
|
{
|
||
|
struct timespec rqt;
|
||
|
rqt.tv_sec = ms/1000u;
|
||
|
rqt.tv_nsec = (ms%1000u)*1000000u;
|
||
|
::nanosleep(&rqt, 0);
|
||
|
}
|
||
|
|
||
|
//systemwide thread
|
||
|
inline OS_systemwide_thread_id_t get_current_systemwide_thread_id()
|
||
|
{
|
||
|
return OS_systemwide_thread_id_t(::getpid(), ::pthread_self());
|
||
|
}
|
||
|
|
||
|
inline bool equal_systemwide_thread_id(const OS_systemwide_thread_id_t &id1, const OS_systemwide_thread_id_t &id2)
|
||
|
{
|
||
|
return (0 != pthread_equal(id1.tid, id2.tid)) && (id1.pid == id2.pid);
|
||
|
}
|
||
|
|
||
|
inline OS_systemwide_thread_id_t get_invalid_systemwide_thread_id()
|
||
|
{
|
||
|
return OS_systemwide_thread_id_t(get_invalid_process_id(), get_invalid_thread_id());
|
||
|
}
|
||
|
|
||
|
inline long double get_current_process_creation_time()
|
||
|
{ return 0.0L; }
|
||
|
|
||
|
inline unsigned int get_num_cores()
|
||
|
{
|
||
|
#ifdef _SC_NPROCESSORS_ONLN
|
||
|
long cores = ::sysconf(_SC_NPROCESSORS_ONLN);
|
||
|
// sysconf returns -1 if the name is invalid, the option does not exist or
|
||
|
// does not have a definite limit.
|
||
|
// if sysconf returns some other negative number, we have no idea
|
||
|
// what is going on. Default to something safe.
|
||
|
if(cores <= 0){
|
||
|
return 1;
|
||
|
}
|
||
|
//Check for overflow (unlikely)
|
||
|
else if(static_cast<unsigned long>(cores) >=
|
||
|
static_cast<unsigned long>(static_cast<unsigned int>(-1))){
|
||
|
return static_cast<unsigned int>(-1);
|
||
|
}
|
||
|
else{
|
||
|
return static_cast<unsigned int>(cores);
|
||
|
}
|
||
|
#elif defined(BOOST_INTERPROCESS_BSD_DERIVATIVE) && defined(HW_NCPU)
|
||
|
int request[2] = { CTL_HW, HW_NCPU };
|
||
|
int num_cores;
|
||
|
std::size_t result_len = sizeof(num_cores);
|
||
|
if ( (::sysctl (request, 2, &num_cores, &result_len, 0, 0) < 0) || (num_cores <= 0) ){
|
||
|
//Return a safe value
|
||
|
return 1;
|
||
|
}
|
||
|
else{
|
||
|
return static_cast<unsigned int>(num_cores);
|
||
|
}
|
||
|
#endif
|
||
|
}
|
||
|
|
||
|
inline int thread_create(OS_thread_t * thread, void *(*start_routine)(void*), void* arg)
|
||
|
{ return pthread_create(thread, 0, start_routine, arg); }
|
||
|
|
||
|
inline void thread_join(OS_thread_t thread)
|
||
|
{ (void)pthread_join(thread, 0); }
|
||
|
|
||
|
#endif //#if defined (BOOST_INTERPROCESS_WINDOWS)
|
||
|
|
||
|
typedef char pid_str_t[sizeof(OS_process_id_t)*3+1];
|
||
|
|
||
|
inline void get_pid_str(pid_str_t &pid_str, OS_process_id_t pid)
|
||
|
{
|
||
|
bufferstream bstream(pid_str, sizeof(pid_str));
|
||
|
bstream << pid << std::ends;
|
||
|
}
|
||
|
|
||
|
inline void get_pid_str(pid_str_t &pid_str)
|
||
|
{ get_pid_str(pid_str, get_current_process_id()); }
|
||
|
|
||
|
#if defined(BOOST_INTERPROCESS_WINDOWS)
|
||
|
|
||
|
inline int thread_create( OS_thread_t * thread, unsigned (__stdcall * start_routine) (void*), void* arg )
|
||
|
{
|
||
|
void* h = (void*)_beginthreadex( 0, 0, start_routine, arg, 0, 0 );
|
||
|
|
||
|
if( h != 0 ){
|
||
|
thread->m_handle = h;
|
||
|
return 0;
|
||
|
}
|
||
|
else{
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
thread->m_handle = (void*)_beginthreadex( 0, 0, start_routine, arg, 0, 0 );
|
||
|
return thread->m_handle != 0;
|
||
|
}
|
||
|
|
||
|
inline void thread_join( OS_thread_t thread)
|
||
|
{
|
||
|
winapi::wait_for_single_object( thread.handle(), winapi::infinite_time );
|
||
|
winapi::close_handle( thread.handle() );
|
||
|
}
|
||
|
|
||
|
#endif
|
||
|
|
||
|
class abstract_thread
|
||
|
{
|
||
|
public:
|
||
|
virtual ~abstract_thread() {}
|
||
|
virtual void run() = 0;
|
||
|
};
|
||
|
|
||
|
template<class T>
|
||
|
class os_thread_func_ptr_deleter
|
||
|
{
|
||
|
public:
|
||
|
explicit os_thread_func_ptr_deleter(T* p)
|
||
|
: m_p(p)
|
||
|
{}
|
||
|
|
||
|
T *release()
|
||
|
{ T *p = m_p; m_p = 0; return p; }
|
||
|
|
||
|
T *get() const
|
||
|
{ return m_p; }
|
||
|
|
||
|
T *operator ->() const
|
||
|
{ return m_p; }
|
||
|
|
||
|
~os_thread_func_ptr_deleter()
|
||
|
{ delete m_p; }
|
||
|
|
||
|
private:
|
||
|
T *m_p;
|
||
|
};
|
||
|
|
||
|
#if defined(BOOST_INTERPROCESS_WINDOWS)
|
||
|
|
||
|
inline unsigned __stdcall launch_thread_routine( void * pv )
|
||
|
{
|
||
|
os_thread_func_ptr_deleter<abstract_thread> pt( static_cast<abstract_thread *>( pv ) );
|
||
|
pt->run();
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
#else
|
||
|
|
||
|
extern "C" void * launch_thread_routine( void * pv );
|
||
|
|
||
|
inline void * launch_thread_routine( void * pv )
|
||
|
{
|
||
|
os_thread_func_ptr_deleter<abstract_thread> pt( static_cast<abstract_thread *>( pv ) );
|
||
|
pt->run();
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
#endif
|
||
|
|
||
|
template<class F>
|
||
|
class launch_thread_impl
|
||
|
: public abstract_thread
|
||
|
{
|
||
|
public:
|
||
|
explicit launch_thread_impl( F f )
|
||
|
: f_( f )
|
||
|
{}
|
||
|
|
||
|
void run()
|
||
|
{ f_(); }
|
||
|
|
||
|
private:
|
||
|
F f_;
|
||
|
};
|
||
|
|
||
|
template<class F>
|
||
|
inline int thread_launch( OS_thread_t & pt, F f )
|
||
|
{
|
||
|
os_thread_func_ptr_deleter<abstract_thread> p( new launch_thread_impl<F>( f ) );
|
||
|
|
||
|
int r = thread_create(&pt, launch_thread_routine, p.get());
|
||
|
if( r == 0 ){
|
||
|
p.release();
|
||
|
}
|
||
|
|
||
|
return r;
|
||
|
}
|
||
|
|
||
|
} //namespace ipcdetail{
|
||
|
} //namespace interprocess {
|
||
|
} //namespace boost {
|
||
|
|
||
|
#include <boost/interprocess/detail/config_end.hpp>
|
||
|
|
||
|
#endif //BOOST_INTERPROCESS_DETAIL_OS_THREAD_FUNCTIONS_HPP
|