compiler-rt/test/tsan/Darwin/osspinlock-norace.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <stdint.h>
   4 #include <stdio.h>
   5
   6 typedef int32_t OSSpinLock;
   7 extern "C" void OSSpinLockLock(OSSpinLock *);
   8 extern "C" void OSSpinLockUnlock(OSSpinLock *);
   9
  10 int Global;
  11 OSSpinLock lock;
  12
  13 void *Thread(void *x) {
  14   OSSpinLockLock(&lock);
  15   Global++;
  16   OSSpinLockUnlock(&lock);
  17   return NULL;
  18 }
  19
  20 int main() {
  21   fprintf(stderr, "Hello world.\n");
  22
  23   pthread_t t[2];
  24   pthread_create(&t[0], NULL, Thread, NULL);
  25   pthread_create(&t[1], NULL, Thread, NULL);
  26   pthread_join(t[0], NULL);
  27   pthread_join(t[1], NULL);
  28
  29   fprintf(stderr, "Done.\n");
  30 }
  31
  32 // CHECK: Hello world.
  33 // CHECK: Done.
  34 // CHECK-NOT: WARNING: ThreadSanitizer