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| // cc -o fun pthreads-megafun.c -g -std=c99 -lpthread | |
| #include <pthread.h> | |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <time.h> | |
| #include <unistd.h> | |
| #include <string.h> | |
| static void *start(void *arg) { | |
| int code = (int)arg; | |
| if (0 == code) { | |
| printf("I won't crash!\n"); | |
| sleep(10); | |
| } else { | |
| printf("Crahsing n_n...\n"); | |
| sleep(5); | |
| *(int*)arg = 34; // YOLO | |
| } | |
| } | |
| int main(int argc, char **argv) { | |
| int flag = 1; | |
| if (argc > 1) { | |
| if (strcmp(argv[1], "-nofail")) { | |
| printf("Usage:\n -nofail -- don't fail\n"); | |
| return 0; | |
| } else { | |
| flag = 0; | |
| } | |
| } | |
| srand(time(NULL)); | |
| pthread_t threads[10]; | |
| for (int i = 0; i < 10; i++) { | |
| int code = 0; | |
| if (flag) { | |
| if (rand() % 3 == 0) { | |
| printf("Thread %d will crash!\n", i); | |
| code = 1; | |
| flag = 0; | |
| } | |
| } | |
| pthread_create(&threads[i], NULL, &start, (void*)code); | |
| } | |
| pthread_join(threads[4], NULL); | |
| return 0; | |
| } |
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