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Mon 14 Oct 23:06:38 CEST 2024

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sbosse 2024-10-14 23:06:59 +02:00
parent 994b2335d5
commit f51ccd3081
1 changed files with 28 additions and 0 deletions
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kernel/mutex.c Normal file
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/*
Copyright (C) 2015-2019 The University of Notre Dame
This software is distributed under the GNU General Public License.
See the file LICENSE for details.
*/
#include "mutex.h"
#include "interrupt.h"
#include "process.h"
void mutex_lock(struct mutex *m)
{
interrupt_block();
while(m->locked) {
process_wait(&m->waitqueue);
interrupt_block();
}
m->locked = 1;
interrupt_unblock();
}
void mutex_unlock(struct mutex *m)
{
interrupt_block();
m->locked = 0;
process_wakeup(&m->waitqueue);
interrupt_unblock();
}