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
18 int Global;
19
Thread1(void * x)20 void *Thread1(void *x) {
21 barrier_wait(&barrier);
22 AnnotateThreadName(__FILE__, __LINE__, "Thread1");
23 Global++;
24 return NULL;
25 }
26
Thread2(void * x)27 void *Thread2(void *x) {
28 #if USE_PTHREAD_SETNAME_NP
29 tsan_pthread_setname_np(pthread_self(), "Thread2");
30 #else
31 AnnotateThreadName(__FILE__, __LINE__, "Thread2");
32 #endif
33 Global--;
34 barrier_wait(&barrier);
35 return NULL;
36 }
37
main()38 int main() {
39 barrier_init(&barrier, 2);
40 pthread_t t[2];
41 pthread_create(&t[0], NULL, Thread1, NULL);
42 pthread_create(&t[1], NULL, Thread2, NULL);
43 pthread_join(t[0], NULL);
44 pthread_join(t[1], NULL);
45 }
46
47 // CHECK: WARNING: ThreadSanitizer: data race
48 // CHECK: Thread T1 'Thread1'
49 // CHECK: Thread T2 'Thread2'
50