Subversion Repositories HelenOS

Rev

Rev 1702 | Rev 1787 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
171 jermar 1
/*
2
 * Copyright (C) 2005 Jakub Jermar
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1757 jermar 29
/** @addtogroup generic
1702 cejka 30
 * @{
31
 */
32
 
1264 jermar 33
/**
34
 * @file    preemption.c
35
 * @brief   Preemption control.
36
 */
37
 
171 jermar 38
#include <preemption.h>
39
#include <arch.h>
177 jermar 40
#include <arch/asm.h>
171 jermar 41
#include <arch/barrier.h>
177 jermar 42
#include <debug.h>
171 jermar 43
 
411 jermar 44
/** Increment preemption disabled counter. */
171 jermar 45
void preemption_disable(void)
46
{
177 jermar 47
    THE->preemption_disabled++;
48
    memory_barrier();
171 jermar 49
}
50
 
411 jermar 51
/** Decrement preemption disabled counter. */
171 jermar 52
void preemption_enable(void)
53
{
177 jermar 54
    ASSERT(THE->preemption_disabled);
55
    memory_barrier();
56
    THE->preemption_disabled--;
171 jermar 57
}
1702 cejka 58
 
1757 jermar 59
/** @}
1702 cejka 60
 */