40 lines · c
1// RUN: %clang_tsan %s -o %t2// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'3 4#include "dispatch/dispatch.h"5 6#include <stdio.h>7 8long global;9dispatch_semaphore_t done;10 11void handler(void *arg) {12 fprintf(stderr, "global = %ld\n", global);13 14 dispatch_semaphore_signal(done);15}16 17int main(int argc, const char *argv[]) {18 done = dispatch_semaphore_create(0);19 20 dispatch_queue_t queue =21 dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);22 23 dispatch_source_t source =24 dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);25 26 dispatch_source_set_timer(source, dispatch_walltime(NULL, 0), 1e9, 5);27 28 global = 42;29 30 dispatch_source_set_event_handler_f(source, &handler);31 32 dispatch_resume(source);33 34 dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);35 36 return 0;37}38 39// CHECK: global = 4240