Process_Semaphore.inl

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00001 // -*- C++ -*-
00002 //
00003 // Process_Semaphore.inl,v 4.3 2006/05/30 13:15:25 schmidt Exp
00004 
00005 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
00006 
00007 #if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) 
00008 ACE_INLINE const ACE_sema_t &
00009 ACE_Process_Semaphore::lock (void) const
00010 {
00011 // ACE_TRACE ("ACE_Process_Semaphore::lock");
00012   return this->lock_.lock ();
00013 }
00014 #endif /* ACE_WIN32 || ACE_HAS_POSIX_SEM */
00015 
00016 // Acquire semaphore ownership.  This calls <acquire> and is only here
00017 // to make the <ACE_Process_Semaphore> interface consistent with the
00018 // other synchronization APIs.
00019 
00020 ACE_INLINE int
00021 ACE_Process_Semaphore::acquire_read (void)
00022 {
00023   return this->acquire ();
00024 }
00025 
00026 // Acquire semaphore ownership.  This calls <acquire> and is only here
00027 // to make the <ACE_Process_Semaphore> interface consistent with the
00028 // other synchronization APIs.
00029 
00030 ACE_INLINE int
00031 ACE_Process_Semaphore::acquire_write (void)
00032 {
00033   return this->acquire ();
00034 }
00035 
00036 // Conditionally acquire semaphore (i.e., won't block).  This calls
00037 // <tryacquire> and is only here to make the <ACE_Process_Semaphore>
00038 // interface consistent with the other synchronization APIs.
00039 
00040 ACE_INLINE int
00041 ACE_Process_Semaphore::tryacquire_read (void)
00042 {
00043   return this->tryacquire ();
00044 }
00045 
00046 // Conditionally acquire semaphore (i.e., won't block).  This calls
00047 // <tryacquire> and is only here to make the <ACE_Process_Semaphore>
00048 // interface consistent with the other synchronization APIs.
00049 
00050 ACE_INLINE int
00051 ACE_Process_Semaphore::tryacquire_write (void)
00052 {
00053   return this->tryacquire ();
00054 }
00055 
00056 // This is only here to make the <ACE_Process_Semaphore>
00057 // interface consistent with the other synchronization APIs.
00058 // Assumes the caller has already acquired the semaphore using one of
00059 // the above calls, and returns 0 (success) always.
00060 ACE_INLINE int
00061 ACE_Process_Semaphore::tryacquire_write_upgrade (void)
00062 {
00063   return 0;
00064 }
00065 
00066 ACE_END_VERSIONED_NAMESPACE_DECL

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