compiler-rt/test/msan/pthread_getname_np.cpp

   1 // RUN: %clangxx_msan -std=c++11 -O0 %s -o %t && %run %t
   2 // The main goal is getting the pthread name back and
   3 // FreeBSD based do not support this feature
   4 // UNSUPPORTED: android, target={{.*freebsd.*}}
   5
   6 // Regression test for a deadlock in pthread_getattr_np
   7
   8 #include <assert.h>
   9 #include <pthread.h>
  10 #include <string.h>
  11 #include <sanitizer/msan_interface.h>
  12
  13 #include <stdio.h>
  14
  15 // Stall child thread on this lock to make sure it doesn't finish
  16 // before the end of the pthread_getname_np() / pthread_setname_np() tests.
  17 static pthread_mutex_t lock;
  18
  19 void *ThreadFn(void *) {
  20   pthread_mutex_lock (&lock);
  21   pthread_mutex_unlock (&lock);
  22   return nullptr;
  23 }
  24
  25 int main(void) {
  26   pthread_t t;
  27
  28   pthread_mutex_init (&lock, NULL);
  29   pthread_mutex_lock (&lock);
  30
  31   int res = pthread_create(&t, 0, ThreadFn, 0);
  32   assert(!res);
  33
  34   const char *kMyThreadName = "my-thread-name";
  35 #if defined(__NetBSD__)
  36   res = pthread_setname_np(t, "%s", (void *)kMyThreadName);
  37 #else
  38   res = pthread_setname_np(t, kMyThreadName);
  39 #endif
  40   assert(!res);
  41
  42   char buf[100];
  43   res = pthread_getname_np(t, buf, sizeof(buf));
  44   assert(!res);
  45   assert(strcmp(buf, kMyThreadName) == 0);
  46
  47   pthread_mutex_unlock (&lock);
  48
  49   res = pthread_join(t, 0);
  50   assert(!res);
  51   return 0;
  52 }