42 lines · c
1// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2#define _GNU_SOURCE3#include "../test.h"4#include <errno.h>5 6int var;7 8void *Thread(void *x) {9 barrier_wait(&barrier);10 var = 1;11 return 0;12}13 14static void check(int res) {15 if (res != EBUSY) {16 fprintf(stderr, "Unexpected result of pthread_tryjoin_np: %d\n", res);17 exit(1);18 }19}20 21int main() {22 barrier_init(&barrier, 2);23 pthread_t t;24 pthread_create(&t, 0, Thread, 0);25 check(pthread_tryjoin_np(t, 0));26 barrier_wait(&barrier);27 for (;;) {28 int res = pthread_tryjoin_np(t, 0);29 if (!res)30 break;31 check(res);32 pthread_yield();33 }34 var = 2;35 fprintf(stderr, "PASS\n");36 return 0;37}38 39// CHECK-NOT: WARNING: ThreadSanitizer: data race40// CHECK-NOT: WARNING: ThreadSanitizer: thread leak41// CHECK: PASS42