/** @file | |
InterLockedIncrement function | |
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php. | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
/** | |
Performs an atomic increment of an 32-bit unsigned integer. | |
Performs an atomic increment of the 32-bit unsigned integer specified by | |
Value and returns the incremented value. The increment operation must be | |
performed using MP safe mechanisms. The state of the return value is not | |
guaranteed to be MP safe. | |
@param Value A pointer to the 32-bit value to increment. | |
@return The incremented value. | |
**/ | |
UINT32 | |
EFIAPI | |
InternalSyncIncrement ( | |
IN volatile UINT32 *Value | |
) | |
{ | |
_asm { | |
mov eax, Value | |
lock inc dword ptr [eax] | |
mov eax, [eax] | |
} | |
} | |