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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// -*- C++ -*-
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//=============================================================================
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/**
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* @file os_semaphore.h
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*
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* semaphores (REALTIME)
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*
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* $Id: os_semaphore.h 80826 2008-03-04 14:51:23Z wotte $
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*
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* @author Don Hinton <dhinton@dresystems.com>
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* @author This code was originally in various places including ace/OS.h.
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*/
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//=============================================================================
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#ifndef ACE_OS_INCLUDE_OS_SEMAPHORE_H
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#define ACE_OS_INCLUDE_OS_SEMAPHORE_H
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#include /**/ "ace/pre.h"
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#include /**/ "ace/config-all.h"
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#if !defined (ACE_LACKS_PRAGMA_ONCE)
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# pragma once
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#endif /* ACE_LACKS_PRAGMA_ONCE */
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#include "ace/os_include/os_time.h"
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#if !defined (ACE_LACKS_SEMAPHORE_H)
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# include /**/ <semaphore.h>
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#endif /* !ACE_LACKS_SEMAPHORE_H */
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// Place all additions (especially function declarations) within extern "C" {}
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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#if defined (ACE_HAS_POSIX_SEM)
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# if !defined (SEM_FAILED) && !defined (ACE_LACKS_NAMED_POSIX_SEM)
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# define SEM_FAILED ((sem_t *) -1)
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# endif /* !SEM_FAILED */
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typedef struct
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{
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/// Pointer to semaphore handle. This is allocated by ACE if we are
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/// working with an unnamed POSIX semaphore or by the OS if we are
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/// working with a named POSIX semaphore.
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sem_t *sema_;
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/// Name of the semaphore (if this is non-NULL then this is a named
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/// POSIX semaphore, else its an unnamed POSIX semaphore).
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char *name_;
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# if defined (ACE_LACKS_NAMED_POSIX_SEM)
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/// this->sema_ doesn't always get created dynamically if a platform
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/// doesn't support named posix semaphores. We use this flag to
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/// remember if we need to delete <sema_> or not.
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bool new_sema_;
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# endif /* ACE_LACKS_NAMED_POSIX_SEM */
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# if !defined (ACE_HAS_POSIX_SEM_TIMEOUT) && !defined (ACE_DISABLE_POSIX_SEM_TIMEOUT_EMULATION)
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/// Serialize access to internal state.
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ACE_mutex_t lock_;
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/// Block until there are no waiters.
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ACE_cond_t count_nonzero_;
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# endif /* !ACE_HAS_POSIX_SEM_TIMEOUT && !ACE_DISABLE_POSIX_SEM_TIMEOUT_EMULATION */
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} ACE_sema_t;
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#endif /* ACE_HAS_POSIX_SEM */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#include /**/ "ace/post.h"
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#endif /* ACE_OS_INCLUDE_OS_SEMAPHORE_H */
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