src/compiler-rt/test/tsan/cond_cancel.c

   1 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2 // CHECK-NOT: WARNING
   3 // CHECK: OK
   4 // This test is failing on powerpc64 (VMA=44). After calling pthread_cancel,
   5 // the Thread-specific data destructors are not called, so the destructor
   6 // "thread_finalize" (defined in tsan_interceptors.cc) can not set the status
   7 // of the thread to "ThreadStatusFinished" failing a check in "SetJoined"
   8 // (defined in sanitizer_thread_registry.cc). It might seem a bug on glibc,
   9 // however the same version GLIBC-2.17 will not make fail the test on
  10 // powerpc64 BE (VMA=46)
  11 // XFAIL: powerpc64-unknown-linux-gnu
  12
  13 #include "test.h"
  14
  15 pthread_mutex_t m;
  16 pthread_cond_t c;
  17 int x;
  18
  19 static void my_cleanup(void *arg) {
  20   printf("my_cleanup\n");
  21   pthread_mutex_unlock((pthread_mutex_t*)arg);
  22 }
  23
  24 void *thr1(void *p) {
  25   pthread_mutex_lock(&m);
  26   pthread_cleanup_push(my_cleanup, &m);
  27   barrier_wait(&barrier);
  28   while (x == 0)
  29     pthread_cond_wait(&c, &m);
  30   pthread_cleanup_pop(1);
  31   return 0;
  32 }
  33
  34 int main() {
  35   barrier_init(&barrier, 2);
  36
  37   pthread_t th;
  38
  39   pthread_mutex_init(&m, 0);
  40   pthread_cond_init(&c, 0);
  41
  42   pthread_create(&th, 0, thr1, 0);
  43   barrier_wait(&barrier);
  44   sleep(1);  // let it block on cond var
  45   pthread_cancel(th);
  46
  47   pthread_join(th, 0);
  48   pthread_mutex_lock(&m);
  49   pthread_mutex_unlock(&m);
  50   fprintf(stderr, "OK\n");
  51 }