| /* |
| * Creates 8 threads. The fifth one (counting the main thread as well) |
| * causes a core dump. |
| */ |
| |
| #include <errno.h> |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #define NEVERENDING_SLEEP 10000 |
| |
| static pthread_barrier_t barrier; |
| |
| static void *thread_func2(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void *thread_func3(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void *thread_func4(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void *thread_func5(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(2); |
| |
| char *x = (char *) 0x1; |
| *x = 2; |
| return NULL; |
| } |
| |
| static void *thread_func6(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void *thread_func7(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void *thread_func8(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void *thread_func9(void *arg) { |
| pthread_barrier_wait(&barrier); |
| sleep(NEVERENDING_SLEEP); |
| return NULL; |
| } |
| |
| static void create_thread(void *(*thread_func)(void *)) |
| { |
| pthread_t thread; |
| |
| int ret = pthread_create(&thread, NULL, thread_func, NULL); |
| if (ret != 0) { |
| fprintf(stderr, "pthread_create: %s (%d)\n", strerror(ret), ret); |
| exit(1); |
| } |
| } |
| |
| int main(int argc, const char *argv[]) |
| { |
| int ret = pthread_barrier_init(&barrier, NULL, 9); |
| if (ret != 0) { |
| fprintf(stderr, "pthread_barrier_init: %s (%d)\n", |
| strerror(ret), ret); |
| exit(1); |
| } |
| |
| create_thread(thread_func2); |
| create_thread(thread_func3); |
| create_thread(thread_func4); |
| create_thread(thread_func5); |
| create_thread(thread_func6); |
| create_thread(thread_func7); |
| create_thread(thread_func8); |
| create_thread(thread_func9); |
| pthread_barrier_wait(&barrier); |
| |
| sleep(NEVERENDING_SLEEP); |
| return 0; |
| } |