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 _InterlockedIncrement(
  14    long * lpAddend
  15 );
  16
  17 #pragma intrinsic(_InterlockedIncrement)
  18
  19 /**
  20   Performs an atomic increment of an 32-bit unsigned integer.
  21
  22   Performs an atomic increment of the 32-bit unsigned integer specified by
  23   Value and returns the incremented value. The increment operation must be
  24   performed using MP safe mechanisms. The state of the return value is not
  25   guaranteed to be MP safe.
  26
  27   @param  Value A pointer to the 32-bit value to increment.
  28
  29   @return The incremented value.
  30
  31 **/
  32 UINT32
  33 EFIAPI
  34 InternalSyncIncrement (
  35   IN      volatile UINT32           *Value
  36   )
  37 {
  38   return _InterlockedIncrement ((long *)(Value));
  39 }
  40