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Last change
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Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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| 1 | /** @file
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| 2 | InterlockedDecrement function
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| 3 |
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| 4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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| 5 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 6 |
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| 7 | **/
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| 8 |
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| 9 | /**
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| 10 | Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
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| 11 | **/
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| 12 |
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| 13 | long _InterlockedDecrement(
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| 14 | long * lpAddend
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| 15 | );
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| 16 |
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| 17 | #pragma intrinsic(_InterlockedDecrement)
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| 18 |
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| 19 | /**
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| 20 | Performs an atomic decrement of an 32-bit unsigned integer.
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| 21 |
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| 22 | Performs an atomic decrement of the 32-bit unsigned integer specified by
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| 23 | Value and returns the decrement value. The decrement operation must be
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| 24 | performed using MP safe mechanisms. The state of the return value is not
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| 25 | guaranteed to be MP safe.
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| 26 |
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| 27 | @param Value A pointer to the 32-bit value to decrement.
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| 28 |
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| 29 | @return The decrement value.
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| 30 |
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| 31 | **/
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| 32 | UINT32
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| 33 | EFIAPI
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| 34 | InternalSyncDecrement (
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| 35 | IN volatile UINT32 *Value
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| 36 | )
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| 37 | {
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| 38 | return _InterlockedDecrement ((long *)(Value));
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| 39 | }
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| 40 |
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