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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2011. 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)
+//
+// See http://www.boost.org/libs/interprocess for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
+#define BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
+
+#if (defined _MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif
+
+#include <boost/interprocess/detail/config_begin.hpp>
+#include <boost/interprocess/detail/workaround.hpp>
+
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+#include <boost/interprocess/sync/posix/semaphore_wrapper.hpp>
+
+namespace boost {
+namespace interprocess {
+namespace ipcdetail {
+
+class posix_semaphore
+{
+ posix_semaphore();
+ posix_semaphore(const posix_semaphore&);
+ posix_semaphore &operator= (const posix_semaphore &);
+
+ public:
+ posix_semaphore(unsigned int initialCount)
+ { semaphore_init(&m_sem, initialCount); }
+
+ ~posix_semaphore()
+ { semaphore_destroy(&m_sem); }
+
+ void post()
+ { semaphore_post(&m_sem); }
+
+ void wait()
+ { semaphore_wait(&m_sem); }
+
+ bool try_wait()
+ { return semaphore_try_wait(&m_sem); }
+
+ bool timed_wait(const boost::posix_time::ptime &abs_time)
+ { return semaphore_timed_wait(&m_sem, abs_time); }
+
+ private:
+ sem_t m_sem;
+};
+
+} //namespace ipcdetail {
+} //namespace interprocess {
+} //namespace boost {
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif //#ifndef BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP