InterlockedCompareExchange64.c File Reference

Go to the source code of this file.

Functions
__int64	_InterlockedCompareExchange64 (__int64 volatile *Destination, __int64 Exchange, __int64 Comperand)
UINT64 EFIAPI	InternalSyncCompareExchange64 (IN volatile UINT64 *Value, IN UINT64 CompareValue, IN UINT64 ExchangeValue)

Detailed Description

InterlockedCompareExchange64 function

Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file InterlockedCompareExchange64.c.

Function Documentation

_InterlockedCompareExchange64()

__int64 _InterlockedCompareExchange64	(	__int64 volatile *	Destination,
		__int64	Exchange,
		__int64	Comperand
	)

Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.

InternalSyncCompareExchange64()

UINT64 EFIAPI InternalSyncCompareExchange64	(	IN volatile UINT64 *	Value,
		IN UINT64	CompareValue,
		IN UINT64	ExchangeValue
	)

Performs an atomic compare exchange operation on a 64-bit unsigned integer.

Performs an atomic compare exchange operation on the 64-bit unsigned integer specified by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue, then Value is returned. The compare exchange operation must be performed using MP safe mechanisms.

Parameters

Value	A pointer to the 64-bit value for the compare exchange operation.
CompareValue	64-bit value used in compare operation.
ExchangeValue	64-bit value used in exchange operation.

Returns

The original *Value before exchange.

Definition at line 40 of file InterlockedCompareExchange64.c.