72 lines
1.8 KiB
C++
Executable File
72 lines
1.8 KiB
C++
Executable File
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2008. 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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#include<boost/interprocess/exceptions.hpp>
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#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
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#include <boost/interprocess/sync/scoped_lock.hpp>
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namespace boost {
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namespace interprocess {
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inline interprocess_semaphore::~interprocess_semaphore()
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{}
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inline interprocess_semaphore::interprocess_semaphore(int initialCount)
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: m_mut(), m_cond(), m_count(initialCount)
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{}
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inline void interprocess_semaphore::post()
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{
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scoped_lock<interprocess_mutex> lock(m_mut);
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if(m_count == 0){
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m_cond.notify_one();
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}
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++m_count;
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}
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inline void interprocess_semaphore::wait()
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{
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scoped_lock<interprocess_mutex> lock(m_mut);
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while(m_count == 0){
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m_cond.wait(lock);
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}
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--m_count;
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}
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inline bool interprocess_semaphore::try_wait()
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{
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scoped_lock<interprocess_mutex> lock(m_mut);
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if(m_count == 0){
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return false;
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}
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--m_count;
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return true;
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}
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inline bool interprocess_semaphore::timed_wait(const boost::posix_time::ptime &abs_time)
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{
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scoped_lock<interprocess_mutex> lock(m_mut);
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while(m_count == 0){
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if(!m_cond.timed_wait(lock, abs_time))
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return m_count != 0;
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}
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--m_count;
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return true;
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}
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/*
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inline int interprocess_semaphore::get_count() const
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{
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scoped_lock<interprocess_mutex> lock(m_mut);
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return count;
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}*/
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} //namespace interprocess {
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} //namespace boost {
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