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111 lines
3 KiB
C++
111 lines
3 KiB
C++
// $Id: Process_Semaphore.cpp 91286 2010-08-05 09:04:31Z johnnyw $
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#include "ace/Process_Semaphore.h"
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#include "ace/Log_Msg.h"
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#include "ace/OS_Memory.h"
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#if !defined (__ACE_INLINE__)
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#include "ace/Process_Semaphore.inl"
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#endif /* __ACE_INLINE__ */
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#include "ace/ACE.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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void
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ACE_Process_Semaphore::dump (void) const
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{
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#if defined (ACE_HAS_DUMP)
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// ACE_TRACE ("ACE_Process_Semaphore::dump");
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ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
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this->lock_.dump ();
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ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
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#endif /* ACE_HAS_DUMP */
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}
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ACE_Process_Semaphore::ACE_Process_Semaphore (u_int count,
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const ACE_TCHAR *name,
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void *arg,
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int max)
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#if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM)
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: lock_ (count, USYNC_PROCESS, name, arg, max)
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#else
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: lock_ (ACE_TEXT_ALWAYS_CHAR (name),
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ACE_SV_Semaphore_Complex::ACE_CREATE,
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count)
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#endif /* ACE_WIN32 || ACE_HAS_POSIX_SEM */
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{
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ACE_UNUSED_ARG (arg);
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ACE_UNUSED_ARG (max);
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// ACE_TRACE ("ACE_Process_Semaphore::ACE_Process_Semaphore");
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}
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// Explicitly destroy the semaphore.
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int
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ACE_Process_Semaphore::remove (void)
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{
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// ACE_TRACE ("ACE_Process_Semaphore::remove");
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return this->lock_.remove ();
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}
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// Block the thread until the semaphore count becomes
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// greater than 0, then decrement it.
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int
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ACE_Process_Semaphore::acquire (void)
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{
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// ACE_TRACE ("ACE_Process_Semaphore::acquire");
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#if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM)
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return this->lock_.acquire ();
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#else
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return this->lock_.acquire (0, SEM_UNDO);
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#endif /* defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) */
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}
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// Conditionally decrement the semaphore if count is greater
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// than 0 (i.e., won't block).
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int
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ACE_Process_Semaphore::tryacquire (void)
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{
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// ACE_TRACE ("ACE_Process_Semaphore::tryacquire");
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#if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM)
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return this->lock_.tryacquire ();
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#else
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return this->lock_.tryacquire (0, SEM_UNDO);
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#endif /* defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) */
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}
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// Increment the semaphore, potentially unblocking
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// a waiting thread.
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int
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ACE_Process_Semaphore::release (void)
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{
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// ACE_TRACE ("ACE_Process_Semaphore::release");
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#if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM)
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return this->lock_.release ();
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#else
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return this->lock_.release (0, SEM_UNDO);
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#endif /* defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) */
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}
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/*****************************************************************************/
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ACE_Process_Semaphore *
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ACE_Malloc_Lock_Adapter_T<ACE_Process_Semaphore>::operator () (const ACE_TCHAR *name)
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{
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ACE_Process_Semaphore *p = 0;
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if (name == 0)
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ACE_NEW_RETURN (p, ACE_Process_Semaphore (1, name), 0);
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else
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ACE_NEW_RETURN (p, ACE_Process_Semaphore (1, ACE::basename (name,
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ACE_DIRECTORY_SEPARATOR_CHAR)),
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0);
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return p;
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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