62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/*
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* Copyright (C) 2006,2009 Apple Computer, Inc. All rights reserved.
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*
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* This document is the property of Apple Computer, Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Computer, Inc.
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*/
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#include <arch.h>
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#include <stdio.h>
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#include <debug.h>
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#include <sys.h>
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#include <sys/task.h>
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#if DEBUG_CRITICAL_SECTIONS
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void _enter_critical_section(const char *from)
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{
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dprintf(DEBUG_SPEW, "enter_critical_section: %s %p %d\n", from, current_task, current_task->irq_disable_count);
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#else
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void enter_critical_section(void)
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{
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#endif
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RELEASE_ASSERT(current_task->irq_disable_count >= 0);
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RELEASE_ASSERT(current_task->irq_disable_count < 1000);
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current_task->irq_disable_count++;
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if (current_task->irq_disable_count == 1) {
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arch_disable_ints();
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}
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}
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#if DEBUG_CRITICAL_SECTIONS
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void _exit_critical_section(const char *from)
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{
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dprintf(DEBUG_SPEW, "exit_critical_section: %s %p %d\n", from, current_task, current_task->irq_disable_count);
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#else
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void exit_critical_section(void)
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{
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#endif
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RELEASE_ASSERT(current_task->irq_disable_count > 0);
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current_task->irq_disable_count--;
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if (current_task->irq_disable_count == 0) {
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arch_enable_ints();
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}
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}
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/* the following are only used in interrupt handler glue */
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void _irq_enter_critical_section(void)
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{
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RELEASE_ASSERT(current_task->irq_disable_count >= 0);
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RELEASE_ASSERT(current_task->irq_disable_count < 1000);
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current_task->irq_disable_count += 100;
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}
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void _irq_exit_critical_section(void)
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{
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RELEASE_ASSERT(current_task->irq_disable_count >= 100);
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current_task->irq_disable_count -= 100;
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}
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