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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <unistd.h> | |
| #include <pthread.h> | |
| #include <time.h> | |
| void *test(int id) { | |
| int r = 10 + rand() % 5; | |
| printf("[%d] id: %d sleep(%d) start\n", getpid(), id, r); | |
| sleep(r); | |
| printf("[%d] id: %d sleep(%d) end\n", getpid(), id, r); | |
| return NULL; | |
| } | |
| int main(int argc, char *argv[]) { | |
| srand(time(NULL)); | |
| int N = 5; | |
| if (argc == 2) { | |
| N = atoi(argv[1]); | |
| } | |
| pthread_t tid[50000]; | |
| for (int i = 0; i < N; i++) { | |
| pthread_create(&tid[i], NULL, test, i); | |
| } | |
| for (int i = 0; i < N; i++) { | |
| pthread_join(tid[i], NULL); | |
| } | |
| printf("end"); | |
| return 0; | |
| } |
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编译
运行（创建 2000 个线程）