2 * reactos spinlock emulation of libcaptive
3 * Copyright (C) 2002 Jan Kratochvil <project-captive@jankratochvil.net>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; exactly version 2 of June 1991 is required
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "reactos/ddk/kefuncs.h" /* self */
27 * @SpinLock: Spinlock to acquire
28 * @OldIrql: Returns the previous irql
30 * Acquires a spinlock. Currently libcaptive doesn't use multithreading
31 * and thus this function is a NOP now. #GMutex would be needed otherwise.
33 VOID KeAcquireSpinLock(PKSPIN_LOCK SpinLock,PKIRQL OldIrql)
36 /* reactos/hal/halx86/irql.c/CurrentIrql is initialized to HIGH_LEVEL */
37 *OldIrql=PASSIVE_LEVEL;
42 * KeAcquireSpinLockAtDpcLevel:
43 * @SpinLock: Spinlock to acquire
45 * Acquires a spinlock if the caller already runs on >= %DISPATCH_LEVEL.
46 * Currently libcaptive doesn't use multithreading
47 * and thus this function is a NOP now. #GMutex would be needed otherwise.
49 VOID KeAcquireSpinLockAtDpcLevel(PKSPIN_LOCK SpinLock)
57 * @SpinLock: Spinlock to release
58 * @NewIrql: Irql level before acquiring the spinlock
60 * Releases a spinlock. Currently libcaptive doesn't use multithreading
61 * and thus this function is a NOP now. #GMutex would be needed otherwise.
63 VOID KeReleaseSpinLock(PKSPIN_LOCK SpinLock,KIRQL NewIrql)
70 * KeReleaseSpinLockFromDpcLevel:
71 * @SpinLock: Spinlock to release
73 * Releases a spinlock if the caller already run on >= %DISPATCH_LEVEL
74 * during its acquire by KeAcquireSpinLockAtDpcLevel().
75 * Currently libcaptive doesn't use multithreading
76 * and thus this function is a NOP now. #GMutex would be needed otherwise.
78 VOID KeReleaseSpinLockFromDpcLevel(PKSPIN_LOCK SpinLock)