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// -*- C++ -*-
//=============================================================================
/**
* @file os_semaphore.h
*
* semaphores (REALTIME)
*
* $Id$
*
* @author Don Hinton <dhinton@dresystems.com>
* @author This code was originally in various places including ace/OS.h.
*/
//=============================================================================
#ifndef ACE_OS_INCLUDE_OS_SEMAPHORE_H
#define ACE_OS_INCLUDE_OS_SEMAPHORE_H
#include "ace/pre.h"
#include "ace/config-all.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/os_include/time.h"
#if !defined (ACE_LACKS_SEMAPHORE_H)
# include /**/ <semaphore.h>
#endif /* !ACE_LACKS_SEMAPHORE_H */
// Place all additions (especially function declarations) within extern "C" {}
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#if defined (ACE_HAS_POSIX_SEM)
# if !defined (SEM_FAILED) && !defined (ACE_LACKS_NAMED_POSIX_SEM)
# define SEM_FAILED ((sem_t *) -1)
# endif /* !SEM_FAILED */
typedef struct
{
/// Pointer to semaphore handle. This is allocated by ACE if we are
/// working with an unnamed POSIX semaphore or by the OS if we are
/// working with a named POSIX semaphore.
sem_t *sema_;
/// Name of the semaphore (if this is non-NULL then this is a named
/// POSIX semaphore, else its an unnamed POSIX semaphore).
char *name_;
# if defined (ACE_LACKS_NAMED_POSIX_SEM)
/// this->sema_ doesn't always get created dynamically if a platform
/// doesn't support named posix semaphores. We use this flag to
/// remember if we need to delete <sema_> or not.
int new_sema_;
# endif /* ACE_LACKS_NAMED_POSIX_SEM */
} ACE_sema_t;
#endif /* ACE_HAS_POSIX_SEM */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#include "ace/post.h"
#endif /* ACE_OS_INCLUDE_OS_SEMAPHORE_H */
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