.. _program_listing_file__tmp_ws_src_ecl_core_ecl_ipc_include_ecl_ipc_semaphore_pos.hpp:

Program Listing for File semaphore_pos.hpp
==========================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_ecl_core_ecl_ipc_include_ecl_ipc_semaphore_pos.hpp>` (``/tmp/ws/src/ecl_core/ecl_ipc/include/ecl/ipc/semaphore_pos.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   
   /*****************************************************************************
   ** Ifdefs
   *****************************************************************************/
   
   #ifndef ECL_IPC_SEMAPHORE_POS_HPP_
   #define ECL_IPC_SEMAPHORE_POS_HPP_
   
   /*****************************************************************************
   ** Platform Check
   *****************************************************************************/
   
   #include <ecl/config.hpp>
   #if defined(ECL_IS_POSIX)
   #include <unistd.h>
   #ifdef _POSIX_SEMAPHORES
   #if _POSIX_SEMAPHORES > 0
   
   /*****************************************************************************
   ** Ecl Functionality Defines
   *****************************************************************************/
   
   #ifndef ECL_HAS_POSIX_SEMAPHORES
     #define ECL_HAS_POSIX_SEMAPHORES
   #endif
   #ifndef ECL_HAS_SEMAPHORES
     #define ECL_HAS_SEMAPHORES
   #endif
   
   /*****************************************************************************
   ** Includes
   *****************************************************************************/
   
   #include <iostream>
   #include <string>
   #include <semaphore.h>
   #include <fcntl.h>           /* For O_* constants */
   #include <ecl/exceptions/standard_exception.hpp>
   #include <ecl/time/duration.hpp>
   
   /*****************************************************************************
   ** Namespaces
   *****************************************************************************/
   
   namespace ecl {
   
   /*****************************************************************************
   ** Forward Declarations
   *****************************************************************************/
   
   class Semaphore;
   
   #ifdef ECL_HAS_EXCEPTIONS
   
   namespace ipc {
   
   /*****************************************************************************
   ** Semaphore Exceptions
   *****************************************************************************/
   ECL_LOCAL ecl::StandardException openSemaphoreException(const char* loc );
   ECL_LOCAL ecl::StandardException tryLockSemaphoreException(const char* loc);
   
   } // namespace ipc
   
   #endif /* ECL_HAS_EXCEPTIONS */
   
   /*****************************************************************************
   ** Semaphores
   *****************************************************************************/
   class ECL_PUBLIC Semaphore
   {
   public:
       /*********************
       ** C&D's
       **********************/
       Semaphore();
       Semaphore(const std::string& string_id);
       virtual ~Semaphore();
   
       /*********************
       ** Locking
       **********************/
       void lock();
       void unlock();
       bool trylock();
       bool trylock( const Duration &timeout );
   
   private:
       std::string name;
       sem_t* semaphore;
   
       int count();
   };
   
   
   } // namespace ecl
   
   
   #endif /* _POSIX_SEMAPHORES > 0 */
   #endif /* _POSIX_SEMAPHORES */
   #endif /* ECL_IS_POSIX */
   
   #endif /* ECL_IPC_SEMAPHORE_POS_HPP_ */