Added boost header

test/external/boost/interprocess/sync/interprocess_semaphore.hpp

@@ -0,0 +1,119 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2009. 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_SEMAPHORE_HPP
+#define BOOST_INTERPROCESS_SEMAPHORE_HPP
+
+/// @cond
+
+#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/creation_tags.hpp>
+#include <boost/interprocess/exceptions.hpp>
+#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
+
+#if !defined(BOOST_INTERPROCESS_FORCE_GENERIC_EMULATION) && \
+   (defined(BOOST_INTERPROCESS_POSIX_PROCESS_SHARED) && defined(BOOST_INTERPROCESS_POSIX_NAMED_SEMAPHORES))
+   #include <fcntl.h>      //O_CREAT, O_*... 
+   #include <unistd.h>     //close
+   #include <string>       //std::string
+   #include <semaphore.h>  //sem_* family, SEM_VALUE_MAX
+   #include <sys/stat.h>   //mode_t, S_IRWXG, S_IRWXO, S_IRWXU,
+   #include <boost/interprocess/sync/posix/semaphore_wrapper.hpp>
+   #define BOOST_INTERPROCESS_USE_POSIX
+#else
+   #include <boost/interprocess/detail/atomic.hpp>
+   #include <boost/cstdint.hpp>
+   #include <boost/interprocess/detail/os_thread_functions.hpp>
+   #define BOOST_INTERPROCESS_USE_GENERIC_EMULATION
+#endif
+
+/// @endcond
+
+//!\file
+//!Describes a interprocess_semaphore class for inter-process synchronization
+
+namespace boost {
+
+namespace interprocess {
+
+//!Wraps a interprocess_semaphore that can be placed in shared memory and can be 
+//!shared between processes. Allows timed lock tries
+class interprocess_semaphore
+{
+   /// @cond
+   //Non-copyable
+   interprocess_semaphore(const interprocess_semaphore &);
+   interprocess_semaphore &operator=(const interprocess_semaphore &);
+   /// @endcond
+   public:
+   //!Creates a interprocess_semaphore with the given initial count. 
+   //!interprocess_exception if there is an error.*/
+   interprocess_semaphore(unsigned int initialCount);
+
+   //!Destroys the interprocess_semaphore.
+   //!Does not throw
+   ~interprocess_semaphore();
+
+   //!Increments the interprocess_semaphore count. If there are processes/threads blocked waiting
+   //!for the interprocess_semaphore, then one of these processes will return successfully from
+   //!its wait function. If there is an error an interprocess_exception exception is thrown.
+   void post();
+
+   //!Decrements the interprocess_semaphore. If the interprocess_semaphore value is not greater than zero,
+   //!then the calling process/thread blocks until it can decrement the counter. 
+   //!If there is an error an interprocess_exception exception is thrown.
+   void wait();
+
+   //!Decrements the interprocess_semaphore if the interprocess_semaphore's value is greater than zero
+   //!and returns true. If the value is not greater than zero returns false.
+   //!If there is an error an interprocess_exception exception is thrown.
+   bool try_wait();
+
+   //!Decrements the interprocess_semaphore if the interprocess_semaphore's value is greater
+   //!than zero and returns true. Otherwise, waits for the interprocess_semaphore
+   //!to the posted or the timeout expires. If the timeout expires, the
+   //!function returns false. If the interprocess_semaphore is posted the function
+   //!returns true. If there is an error throws sem_exception
+   bool timed_wait(const boost::posix_time::ptime &abs_time);
+
+   //!Returns the interprocess_semaphore count
+//   int get_count() const;
+   /// @cond
+   private:
+   #if defined(BOOST_INTERPROCESS_USE_GENERIC_EMULATION)
+   volatile boost::uint32_t m_count;
+   #else 
+   ipcdetail::semaphore_wrapper m_sem;
+   #endif   //#if defined(BOOST_INTERPROCESS_USE_GENERIC_EMULATION)
+   /// @endcond
+};
+
+}  //namespace interprocess {
+
+}  //namespace boost {
+
+#ifdef BOOST_INTERPROCESS_USE_GENERIC_EMULATION
+#  undef BOOST_INTERPROCESS_USE_GENERIC_EMULATION
+#  include <boost/interprocess/sync/emulation/interprocess_semaphore.hpp>
+#endif
+
+#ifdef BOOST_INTERPROCESS_USE_POSIX
+#  undef BOOST_INTERPROCESS_USE_POSIX
+#  include <boost/interprocess/sync/posix/interprocess_semaphore.hpp>
+#endif
+
+#include <boost/interprocess/detail/config_end.hpp>
+
+#endif   //BOOST_INTERPROCESS_SEMAPHORE_HPP