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#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <pthread.h> | ||
#include <unistd.h> | ||
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#include "common.h" | ||
#include "common_threads.h" | ||
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pthread_mutex_t L1 = PTHREAD_MUTEX_INITIALIZER; | ||
pthread_mutex_t L2 = PTHREAD_MUTEX_INITIALIZER; | ||
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void *thread1(void *arg) { | ||
printf("t1: begin\n"); | ||
printf("t1: try to acquire L1...\n"); | ||
Pthread_mutex_lock(&L1); | ||
printf("t1: L1 acquired\n"); | ||
printf("t1: try to acquire L2...\n"); | ||
Pthread_mutex_lock(&L2); | ||
printf("t1: L2 acquired\n"); | ||
Pthread_mutex_unlock(&L1); | ||
Pthread_mutex_unlock(&L2); | ||
return NULL; | ||
} | ||
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void *thread2(void *arg) { | ||
printf(" t2: begin\n"); | ||
printf(" t2: try to acquire L2...\n"); | ||
Pthread_mutex_lock(&L2); | ||
printf(" t2: L2 acquired\n"); | ||
printf(" t2: try to acquire L1...\n"); | ||
Pthread_mutex_lock(&L1); | ||
printf(" t2: L1 acquired\n"); | ||
Pthread_mutex_unlock(&L1); | ||
Pthread_mutex_unlock(&L2); | ||
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return NULL; | ||
} | ||
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int main(int argc, char *argv[]) { | ||
if (argc != 1) { | ||
fprintf(stderr, "usage: main\n"); | ||
exit(1); | ||
} | ||
pthread_t p1, p2; | ||
printf("main: begin\n"); | ||
Pthread_create(&p1, NULL, thread1, NULL); | ||
Pthread_create(&p2, NULL, thread2, NULL); | ||
// join waits for the threads to finish | ||
Pthread_join(p1, NULL); | ||
Pthread_join(p2, NULL); | ||
printf("main: end\n"); | ||
return 0; | ||
} | ||
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#! /bin/bash | ||
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while true; do | ||
./deadlock | ||
done | ||
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