C++ (Cpp) PTW32_INTERLOCKED_EXCHANGE_ADD_SIZEの例

コード例 #1

ファイル: ptw32_MCS_lock.c プロジェクト: erdincay/vcxsrv-linux2windows

INLINE 
#endif /* PTW32_BUILD_INLINED */
void 
ptw32_mcs_lock_release (ptw32_mcs_local_node_t * node)
{
  ptw32_mcs_lock_t *lock = node->lock;
  ptw32_mcs_local_node_t *next =
    (ptw32_mcs_local_node_t *)
      PTW32_INTERLOCKED_EXCHANGE_ADD_SIZE((PTW32_INTERLOCKED_SIZEPTR)&node->next, (PTW32_INTERLOCKED_SIZE)0); /* MBR fence */

  if (0 == next)
    {
      /* no known successor */

      if (node == (ptw32_mcs_local_node_t *)
	  PTW32_INTERLOCKED_COMPARE_EXCHANGE_PTR((PTW32_INTERLOCKED_PVOID_PTR)lock,
						 (PTW32_INTERLOCKED_PVOID)0,
						 (PTW32_INTERLOCKED_PVOID)node))
	{
	  /* no successor, lock is free now */
	  return;
	}
  
      /* wait for successor */
      ptw32_mcs_flag_wait(&node->nextFlag);
      next = (ptw32_mcs_local_node_t *)
	PTW32_INTERLOCKED_EXCHANGE_ADD_SIZE((PTW32_INTERLOCKED_SIZEPTR)&node->next, (PTW32_INTERLOCKED_SIZE)0); /* MBR fence */
    }

  /* pass the lock */
  ptw32_mcs_flag_set(&next->readyFlag);
}

コード例 #2

ファイル: ptw32_MCS_lock.c プロジェクト: qtekfun/htcDesire820Kernel

INLINE 
#endif 
void 
ptw32_mcs_lock_release (ptw32_mcs_local_node_t * node)
{
  ptw32_mcs_lock_t *lock = node->lock;
  ptw32_mcs_local_node_t *next =
    (ptw32_mcs_local_node_t *)
      PTW32_INTERLOCKED_EXCHANGE_ADD_SIZE((PTW32_INTERLOCKED_SIZEPTR)&node->next, (PTW32_INTERLOCKED_SIZE)0); 

  if (0 == next)
    {
      

      if (node == (ptw32_mcs_local_node_t *)
	  PTW32_INTERLOCKED_COMPARE_EXCHANGE_PTR((PTW32_INTERLOCKED_PVOID_PTR)lock,
						 (PTW32_INTERLOCKED_PVOID)0,
						 (PTW32_INTERLOCKED_PVOID)node))
	{
	  
	  return;
	}
  
      
      ptw32_mcs_flag_wait(&node->nextFlag);
      next = (ptw32_mcs_local_node_t *)
	PTW32_INTERLOCKED_EXCHANGE_ADD_SIZE((PTW32_INTERLOCKED_SIZEPTR)&node->next, (PTW32_INTERLOCKED_SIZE)0); 
    }

  
  ptw32_mcs_flag_set(&next->readyFlag);
}

コード例 #3

ファイル: ptw32_MCS_lock.c プロジェクト: erdincay/vcxsrv-linux2windows

/*
 * ptw32_mcs_flag_wait -- wait for notification from another.
 * 
 * Store an event handle in the flag and wait on it if the flag has not been
 * set, and proceed without creating an event otherwise.
 */
INLINE void 
ptw32_mcs_flag_wait (HANDLE * flag)
{
  if ((PTW32_INTERLOCKED_SIZE)0 ==
        PTW32_INTERLOCKED_EXCHANGE_ADD_SIZE((PTW32_INTERLOCKED_SIZEPTR)flag,
                                            (PTW32_INTERLOCKED_SIZE)0)) /* MBR fence */
    {
      /* the flag is not set. create event. */

      HANDLE e = CreateEvent(NULL, PTW32_FALSE, PTW32_FALSE, NULL);

      if ((PTW32_INTERLOCKED_SIZE)0 == PTW32_INTERLOCKED_COMPARE_EXCHANGE_SIZE(
			                  (PTW32_INTERLOCKED_SIZEPTR)flag,
			                  (PTW32_INTERLOCKED_SIZE)e,
			                  (PTW32_INTERLOCKED_SIZE)0))
	{
	  /* stored handle in the flag. wait on it now. */
	  WaitForSingleObject(e, INFINITE);
	}

      CloseHandle(e);
    }
}

コード例 #4

ファイル: ptw32_MCS_lock.c プロジェクト: qtekfun/htcDesire820Kernel

INLINE void 
ptw32_mcs_flag_wait (HANDLE * flag)
{
  if ((PTW32_INTERLOCKED_LONG)0 ==
        PTW32_INTERLOCKED_EXCHANGE_ADD_SIZE((PTW32_INTERLOCKED_SIZEPTR)flag,
                                            (PTW32_INTERLOCKED_SIZE)0)) 
    {
      

      HANDLE e = CreateEvent(NULL, PTW32_FALSE, PTW32_FALSE, NULL);

      if ((PTW32_INTERLOCKED_SIZE)0 == PTW32_INTERLOCKED_COMPARE_EXCHANGE_SIZE(
			                  (PTW32_INTERLOCKED_SIZEPTR)flag,
			                  (PTW32_INTERLOCKED_SIZE)e,
			                  (PTW32_INTERLOCKED_SIZE)0))
	{
	  
	  WaitForSingleObject(e, INFINITE);
	}

      CloseHandle(e);
    }
}