1 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2 #include "test.h" 3 #include <signal.h> 4 #include <unistd.h> 5 #include <errno.h> 6 #include <semaphore.h> 7 8 // Test that signals can be delivered to blocked pthread_cond_wait. 9 // https://code.google.com/p/thread-sanitizer/issues/detail?id=91 10 11 int g_thread_run = 1; 12 pthread_mutex_t mutex; 13 pthread_cond_t cond; 14 sem_t sem; 15 16 void sig_handler(int sig) { 17 (void)sig; 18 write(1, "SIGNAL\n", sizeof("SIGNAL\n") - 1); 19 sem_post(&sem); 20 } 21 22 void* my_thread(void* arg) { 23 pthread_mutex_lock(&mutex); 24 while (g_thread_run) 25 pthread_cond_wait(&cond, &mutex); 26 pthread_mutex_unlock(&mutex); 27 return 0; 28 } 29 30 int main() { 31 sem_init(&sem, 0, 0); 32 signal(SIGUSR1, &sig_handler); 33 pthread_t thr; 34 pthread_create(&thr, 0, &my_thread, 0); 35 // wait for thread to get inside pthread_cond_wait 36 // (can't use barrier_wait for that) 37 sleep(1); 38 pthread_kill(thr, SIGUSR1); 39 while (sem_wait(&sem) == -1 && errno == EINTR) { 40 } 41 pthread_mutex_lock(&mutex); 42 g_thread_run = 0; 43 pthread_cond_signal(&cond); 44 pthread_mutex_unlock(&mutex); 45 pthread_join(thr, 0); 46 fprintf(stderr, "DONE\n"); 47 return 0; 48 } 49 50 // CHECK: SIGNAL 51 // CHECK: DONE 52
