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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\thread\pthread\condition_variable.hpp
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#ifndef BOOST_THREAD_CONDITION_VARIABLE_PTHREAD_HPP #define BOOST_THREAD_CONDITION_VARIABLE_PTHREAD_HPP // Distributed under the Boost Software License, Version 1.0. (See // accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // (C) Copyright 2007 Anthony Williams #include
#include
#include
#include
#include "timespec.hpp" #include "pthread_mutex_scoped_lock.hpp" #include "thread_data.hpp" #include "condition_variable_fwd.hpp" namespace boost { inline condition_variable::condition_variable() { int const res=pthread_cond_init(&cond,NULL); if(res) { throw thread_resource_error(); } } inline condition_variable::~condition_variable() { BOOST_VERIFY(!pthread_cond_destroy(&cond)); } inline void condition_variable::wait(unique_lock
& m) { detail::interruption_checker check_for_interruption(&cond); BOOST_VERIFY(!pthread_cond_wait(&cond,m.mutex()->native_handle())); } inline bool condition_variable::timed_wait(unique_lock
& m,boost::system_time const& wait_until) { detail::interruption_checker check_for_interruption(&cond); struct timespec const timeout=detail::get_timespec(wait_until); int const cond_res=pthread_cond_timedwait(&cond,m.mutex()->native_handle(),&timeout); if(cond_res==ETIMEDOUT) { return false; } BOOST_ASSERT(!cond_res); return true; } inline void condition_variable::notify_one() { BOOST_VERIFY(!pthread_cond_signal(&cond)); } inline void condition_variable::notify_all() { BOOST_VERIFY(!pthread_cond_broadcast(&cond)); } class condition_variable_any { pthread_mutex_t internal_mutex; pthread_cond_t cond; condition_variable_any(condition_variable&); condition_variable_any& operator=(condition_variable&); public: condition_variable_any() { int const res=pthread_mutex_init(&internal_mutex,NULL); if(res) { throw thread_resource_error(); } int const res2=pthread_cond_init(&cond,NULL); if(res2) { BOOST_VERIFY(!pthread_mutex_destroy(&internal_mutex)); throw thread_resource_error(); } } ~condition_variable_any() { BOOST_VERIFY(!pthread_mutex_destroy(&internal_mutex)); BOOST_VERIFY(!pthread_cond_destroy(&cond)); } template
void wait(lock_type& m) { int res=0; { detail::interruption_checker check_for_interruption(&cond); { boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex); m.unlock(); res=pthread_cond_wait(&cond,&internal_mutex); } m.lock(); } if(res) { throw condition_error(); } } template
void wait(lock_type& m,predicate_type pred) { while(!pred()) wait(m); } template
bool timed_wait(lock_type& m,boost::system_time const& wait_until) { struct timespec const timeout=detail::get_timespec(wait_until); int res=0; { detail::interruption_checker check_for_interruption(&cond); { boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex); m.unlock(); res=pthread_cond_timedwait(&cond,&internal_mutex,&timeout); } m.lock(); } if(res==ETIMEDOUT) { return false; } if(res) { throw condition_error(); } return true; } template
bool timed_wait(lock_type& m,boost::system_time const& wait_until,predicate_type pred) { while (!pred()) { if(!timed_wait(m, wait_until)) return pred(); } return true; } template
bool timed_wait(lock_type& m,xtime const& wait_until,predicate_type pred) { return timed_wait(m,system_time(wait_until),pred); } template
bool timed_wait(lock_type& m,duration_type const& wait_duration,predicate_type pred) { return timed_wait(m,get_system_time()+wait_duration,pred); } void notify_one() { boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex); BOOST_VERIFY(!pthread_cond_signal(&cond)); } void notify_all() { boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex); BOOST_VERIFY(!pthread_cond_broadcast(&cond)); } }; } #endif
condition_variable.hpp
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