39 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#include <string.h>8 9long global = 42;10 11int main(int argc, const char *argv[]) {12 fprintf(stderr, "Hello world.\n");13 14 dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);15 dispatch_semaphore_t sem = dispatch_semaphore_create(0);16 17 const char *buffer = "buffer";18 size_t size = strlen(buffer);19 20 dispatch_data_t data = dispatch_data_create(buffer, size, q, ^{21 fprintf(stderr, "Data destructor.\n");22 global++;23 24 dispatch_semaphore_signal(sem);25 });26 dispatch_release(data);27 28 dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);29 30 data = dispatch_data_create(buffer, size, q, DISPATCH_DATA_DESTRUCTOR_DEFAULT);31 dispatch_release(data);32 33 fprintf(stderr, "Done.\n");34}35 36// CHECK: Hello world.37// CHECK: Data destructor.38// CHECK: Done.39