mirror of https://github.com/t1meshift/os_labs.git
31 lines
746 B
C
31 lines
746 B
C
#include <stdio.h>
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#include "mythread.h"
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pthread_mutex_t g = PTHREAD_MUTEX_INITIALIZER;
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pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
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pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
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void* worker(void* arg) {
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Pthread_mutex_lock(&g);
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if ((long long) arg == 0) {
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Pthread_mutex_lock(&m1);
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Pthread_mutex_lock(&m2);
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} else {
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Pthread_mutex_lock(&m2);
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Pthread_mutex_lock(&m1);
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}
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Pthread_mutex_unlock(&m1);
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Pthread_mutex_unlock(&m2);
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Pthread_mutex_unlock(&g);
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return NULL;
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}
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int main(int argc, char *argv[]) {
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pthread_t p1, p2;
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Pthread_create(&p1, NULL, worker, (void *) (long long) 0);
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Pthread_create(&p2, NULL, worker, (void *) (long long) 1);
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Pthread_join(p1, NULL);
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Pthread_join(p2, NULL);
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return 0;
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} |