compiler-rt/test/tsan/thread_name2.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3
   4 // OS X doesn't have pthread_setname_np(tid, name).
   5 // UNSUPPORTED: darwin
   6
   7 #if defined(__FreeBSD__)
   8 #include <pthread_np.h>
   9 #define tsan_pthread_setname_np pthread_set_name_np
  10 #elif defined(__NetBSD__)
  11 #define tsan_pthread_setname_np(a, b) pthread_setname_np((a), "%s", (void *)(b))
  12 #else
  13 #define tsan_pthread_setname_np pthread_setname_np
  14 #endif
  15
  16 long long Global;
  17
  18 void *Thread1(void *x) {
  19   barrier_wait(&barrier);
  20   Global++;
  21   return 0;
  22 }
  23
  24 void *Thread2(void *x) {
  25   tsan_pthread_setname_np(pthread_self(), "foobar2");
  26   Global--;
  27   barrier_wait(&barrier);
  28   return 0;
  29 }
  30
  31 int main() {
  32   barrier_init(&barrier, 3);
  33   pthread_t t[2];
  34   pthread_create(&t[0], 0, Thread1, 0);
  35   pthread_create(&t[1], 0, Thread2, 0);
  36   tsan_pthread_setname_np(t[0], "foobar1");
  37   barrier_wait(&barrier);
  38   pthread_join(t[0], NULL);
  39   pthread_join(t[1], NULL);
  40 }
  41
  42 // CHECK: WARNING: ThreadSanitizer: data race
  43 // CHECK:   Thread T1 'foobar1'
  44 // CHECK:   Thread T2 'foobar2'