| // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
| #include "test.h" |
| #include <signal.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <semaphore.h> |
| |
| // Test that signals can be delivered to blocked pthread_cond_wait. |
| // https://code.google.com/p/thread-sanitizer/issues/detail?id=91 |
| |
| int g_thread_run = 1; |
| pthread_mutex_t mutex; |
| pthread_cond_t cond; |
| sem_t sem; |
| |
| void sig_handler(int sig) { |
| (void)sig; |
| write(1, "SIGNAL\n", sizeof("SIGNAL\n") - 1); |
| sem_post(&sem); |
| } |
| |
| void* my_thread(void* arg) { |
| pthread_mutex_lock(&mutex); |
| while (g_thread_run) |
| pthread_cond_wait(&cond, &mutex); |
| pthread_mutex_unlock(&mutex); |
| return 0; |
| } |
| |
| int main() { |
| sem_init(&sem, 0, 0); |
| signal(SIGUSR1, &sig_handler); |
| pthread_t thr; |
| pthread_create(&thr, 0, &my_thread, 0); |
| // wait for thread to get inside pthread_cond_wait |
| // (can't use barrier_wait for that) |
| sleep(1); |
| pthread_kill(thr, SIGUSR1); |
| while (sem_wait(&sem) == -1 && errno == EINTR) { |
| } |
| pthread_mutex_lock(&mutex); |
| g_thread_run = 0; |
| pthread_cond_signal(&cond); |
| pthread_mutex_unlock(&mutex); |
| pthread_join(thr, 0); |
| fprintf(stderr, "DONE\n"); |
| return 0; |
| } |
| |
| // CHECK: SIGNAL |
| // CHECK: DONE |