diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/Dxe/EfiDriverLib/Lock.c')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/Dxe/EfiDriverLib/Lock.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Dxe/EfiDriverLib/Lock.c b/EdkCompatibilityPkg/Foundation/Library/Dxe/EfiDriverLib/Lock.c deleted file mode 100644 index d11c5984bc..0000000000 --- a/EdkCompatibilityPkg/Foundation/Library/Dxe/EfiDriverLib/Lock.c +++ /dev/null @@ -1,159 +0,0 @@ -/*++
-
-Copyright (c) 2004, 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.
-
-Module Name:
-
- Lock.c
-
-Abstract:
-
- Support for locking lib services.
-
---*/
-
-#include "Tiano.h"
-#include "EfiDriverLib.h"
-
-VOID
-EfiInitializeLock (
- IN OUT EFI_LOCK *Lock,
- IN EFI_TPL Priority
- )
-/*++
-
-Routine Description:
-
- Initialize a basic mutual exclusion lock. Each lock
- provides mutual exclusion access at it's task priority
- level. Since there is no-premption (at any TPL) or
- multiprocessor support, acquiring the lock only consists
- of raising to the locks TPL.
-
- Note on a check build ASSERT()s are used to ensure proper
- lock usage.
-
-Arguments:
-
- Lock - The EFI_LOCK structure to initialize
-
- Priority - The task priority level of the lock
-
-
-Returns:
-
- An initialized Efi Lock structure.
-
---*/
-{
- Lock->Tpl = Priority;
- Lock->OwnerTpl = 0;
- Lock->Lock = 0;
-}
-
-EFI_STATUS
-EfiAcquireLockOrFail (
- IN EFI_LOCK *Lock
- )
-/*++
-
-Routine Description:
-
- Initialize a basic mutual exclusion lock. Each lock
- provides mutual exclusion access at it's task priority
- level. Since there is no-premption (at any TPL) or
- multiprocessor support, acquiring the lock only consists
- of raising to the locks TPL.
-
-Arguments:
-
- Lock - The EFI_LOCK structure to initialize
-
-Returns:
-
- EFI_SUCCESS - Lock Owned.
- EFI_ACCESS_DENIED - Reentrant Lock Acquisition, Lock not Owned.
-
---*/
-{
- if (Lock->Lock != 0) {
- //
- // Lock is already owned, so bail out
- //
- return EFI_ACCESS_DENIED;
- }
-
- Lock->OwnerTpl = gBS->RaiseTPL (Lock->Tpl);
-
- Lock->Lock += 1;
- return EFI_SUCCESS;
-}
-
-VOID
-EfiAcquireLock (
- IN EFI_LOCK *Lock
- )
-/*++
-
-Routine Description:
-
- Raising to the task priority level of the mutual exclusion
- lock, and then acquires ownership of the lock.
-
-Arguments:
-
- Lock - The lock to acquire
-
-Returns:
-
- Lock owned
-
---*/
-{
- EFI_STATUS Status;
-
- Status = EfiAcquireLockOrFail (Lock);
-
- //
- // Lock was already locked.
- //
- ASSERT_EFI_ERROR (Status);
-}
-
-VOID
-EfiReleaseLock (
- IN EFI_LOCK *Lock
- )
-/*++
-
-Routine Description:
-
- Releases ownership of the mutual exclusion lock, and
- restores the previous task priority level.
-
-Arguments:
-
- Lock - The lock to release
-
-Returns:
-
- Lock unowned
-
---*/
-{
- EFI_TPL Tpl;
-
- Tpl = Lock->OwnerTpl;
-
- ASSERT (Lock->Lock == 1);
- Lock->Lock -= 1;
-
- gBS->RestoreTPL (Tpl);
-}
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