test/tsan/thread_name.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5
   6 extern "C" void AnnotateThreadName(const char *f, int l, const char *name);
   7
   8 int Global;
   9
  10 void *Thread1(void *x) {
  11   sleep(1);
  12   AnnotateThreadName(__FILE__, __LINE__, "Thread1");
  13   Global++;
  14   return NULL;
  15 }
  16
  17 void *Thread2(void *x) {
  18 #if SANITIZER_LINUX && __GLIBC_PREREQ(2, 12)
  19   pthread_setname_np(pthread_self(), "Thread2");
  20 #else
  21   AnnotateThreadName(__FILE__, __LINE__, "Thread2");
  22 #endif
  23   Global--;
  24   return NULL;
  25 }
  26
  27 int main() {
  28   pthread_t t[2];
  29   pthread_create(&t[0], NULL, Thread1, NULL);
  30   pthread_create(&t[1], NULL, Thread2, NULL);
  31   pthread_join(t[0], NULL);
  32   pthread_join(t[1], NULL);
  33 }
  34
  35 // CHECK: WARNING: ThreadSanitizer: data race
  36 // CHECK:   Thread T1 'Thread1'
  37 // CHECK:   Thread T2 'Thread2'
  38