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/* -*- C++ -*- */
//=============================================================================
/**
* @file ace_semaphore.h
*
* $Id$
*
* @author Douglas C. Schmidt (schmidt@cs.wustl.edu)
* @author etc
*/
//=============================================================================
#ifndef ACE_ACE_SEMAPHORE_H
#define ACE_ACE_SEMAPHORE_H
#include "ace/pre.h"
#include "ace/config-all.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
// These hooks enable ACE to have all dynamic memory management
// automatically handled on a per-object basis.
# if defined (ACE_LACKS_KEY_T)
# if defined (ACE_WIN32)
// Win32 doesn't use numeric values to name its semaphores, it uses
// strings!
typedef char *key_t;
# else
typedef int key_t;
# endif /* ACE_WIN32 */
# endif /* ACE_LACKS_KEY_T */
# if defined (ACE_HAS_POSIX_SEM)
# include /**/ <semaphore.h>
# if !defined (SEM_FAILED) && !defined (ACE_LACKS_NAMED_POSIX_SEM)
# define SEM_FAILED ((sem_t *) -1)
# endif /* !SEM_FAILED */
typedef struct
{
sem_t *sema_;
// 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.
char *name_;
// Name of the semaphore (if this is non-NULL then this is a named
// POSIX semaphore, else its an unnamed POSIX semaphore).
# if defined (ACE_LACKS_NAMED_POSIX_SEM)
int new_sema_;
// 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.
# endif /* ACE_LACKS_NAMED_POSIX_SEM */
} ACE_sema_t;
# endif /* !ACE_WIN32 */
#endif /* ACE_ACE_SEMAPHORE_H */
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