MdePkg/Library/BaseSynchronizationLib/InterlockedIncrementMsc.c

   1 /** @file
   2   InterLockedIncrement function
   3
   4   Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 /**
  10   Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
  11 **/
  12
  13 long
  14 _InterlockedIncrement (
  15   long  *lpAddend
  16   );
  17
  18 #pragma intrinsic(_InterlockedIncrement)
  19
  20 /**
  21   Performs an atomic increment of an 32-bit unsigned integer.
  22
  23   Performs an atomic increment of the 32-bit unsigned integer specified by
  24   Value and returns the incremented value. The increment operation must be
  25   performed using MP safe mechanisms. The state of the return value is not
  26   guaranteed to be MP safe.
  27
  28   @param  Value A pointer to the 32-bit value to increment.
  29
  30   @return The incremented value.
  31
  32 **/
  33 UINT32
  34 EFIAPI
  35 InternalSyncIncrement (
  36   IN      volatile UINT32  *Value
  37   )
  38 {
  39   return _InterlockedIncrement ((long *)(Value));
  40 }