1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "test.h"
3
4#if defined(__linux__)
5#define USE_PTHREAD_SETNAME_NP __GLIBC_PREREQ(2, 12)
6#define tsan_pthread_setname_np pthread_setname_np
7#elif defined(__FreeBSD__)
8#include <pthread_np.h>
9#define USE_PTHREAD_SETNAME_NP 1
10#define tsan_pthread_setname_np pthread_set_name_np
11#elif defined(__NetBSD__)
12#define USE_PTHREAD_SETNAME_NP 1
13#define tsan_pthread_setname_np(a, b) pthread_setname_np((a), "%s", (void *)(b))
14#else
15#define USE_PTHREAD_SETNAME_NP 0
16#endif
17
18extern "C" void AnnotateThreadName(const char *f, int l, const char *name);
19
20int Global;
21
22void *Thread1(void *x) {
23 barrier_wait(&barrier);
24 AnnotateThreadName(__FILE__, __LINE__, "Thread1");
25 Global++;
26 return NULL;
27}
28
29void *Thread2(void *x) {
30#if USE_PTHREAD_SETNAME_NP
31 tsan_pthread_setname_np(pthread_self(), "Thread2");
32#else
33 AnnotateThreadName(__FILE__, __LINE__, "Thread2");
34#endif
35 Global--;
36 barrier_wait(&barrier);
37 return NULL;
38}
39
40int main() {
41 barrier_init(&barrier, 2);
42 pthread_t t[2];
43 pthread_create(&t[0], NULL, Thread1, NULL);
44 pthread_create(&t[1], NULL, Thread2, NULL);
45 pthread_join(t[0], NULL);
46 pthread_join(t[1], NULL);
47}
48
49// CHECK: WARNING: ThreadSanitizer: data race
50// CHECK: Thread T1 'Thread1'
51// CHECK: Thread T2 'Thread2'
52