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git.proxmox.com Git - mirror_edk2.git/blob - MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLibInternals.h
2 Declaration of internal functions in BaseSynchronizationLib.
4 Copyright (c) 2006 - 2008, Intel Corporation<BR>
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #ifndef __BASE_SYNCHRONIZATION_LIB_INTERNALS__
16 #define __BASE_SYNCHRONIZATION_LIB_INTERNALS__
19 #include <Library/SynchronizationLib.h>
20 #include <Library/BaseLib.h>
21 #include <Library/DebugLib.h>
22 #include <Library/TimerLib.h>
23 #include <Library/PcdLib.h>
26 Performs an atomic increment of an 32-bit unsigned integer.
28 Performs an atomic increment of the 32-bit unsigned integer specified by
29 Value and returns the incremented value. The increment operation must be
30 performed using MP safe mechanisms. The state of the return value is not
31 guaranteed to be MP safe.
33 @param Value A pointer to the 32-bit value to increment.
35 @return The incremented value.
40 InternalSyncIncrement (
41 IN
volatile UINT32
*Value
46 Performs an atomic decrement of an 32-bit unsigned integer.
48 Performs an atomic decrement of the 32-bit unsigned integer specified by
49 Value and returns the decrement value. The decrement operation must be
50 performed using MP safe mechanisms. The state of the return value is not
51 guaranteed to be MP safe.
53 @param Value A pointer to the 32-bit value to decrement.
55 @return The decrement value.
60 InternalSyncDecrement (
61 IN
volatile UINT32
*Value
66 Performs an atomic compare exchange operation on a 32-bit unsigned integer.
68 Performs an atomic compare exchange operation on the 32-bit unsigned integer
69 specified by Value. If Value is equal to CompareValue, then Value is set to
70 ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,
71 then Value is returned. The compare exchange operation must be performed using
74 @param Value A pointer to the 32-bit value for the compare exchange
76 @param CompareValue 32-bit value used in compare operation.
77 @param ExchangeValue 32-bit value used in exchange operation.
79 @return The original *Value before exchange.
84 InternalSyncCompareExchange32 (
85 IN
volatile UINT32
*Value
,
86 IN UINT32 CompareValue
,
87 IN UINT32 ExchangeValue
92 Performs an atomic compare exchange operation on a 64-bit unsigned integer.
94 Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
95 by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and
96 CompareValue is returned. If Value is not equal to CompareValue, then Value is returned.
97 The compare exchange operation must be performed using MP safe mechanisms.
99 @param Value A pointer to the 64-bit value for the compare exchange
101 @param CompareValue 64-bit value used in compare operation.
102 @param ExchangeValue 64-bit value used in exchange operation.
104 @return The original *Value before exchange.
109 InternalSyncCompareExchange64 (
110 IN
volatile UINT64
*Value
,
111 IN UINT64 CompareValue
,
112 IN UINT64 ExchangeValue