1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2#include "java.h"
3
4jptr varaddr;
5jptr lockaddr;
6
7void *Thread(void *p) {
8  barrier_wait(&barrier);
9  __tsan_java_mutex_read_lock(lockaddr);
10  *(int*)varaddr = 42;
11  __tsan_java_mutex_read_unlock(lockaddr);
12  return 0;
13}
14
15int main() {
16  barrier_init(&barrier, 2);
17  int const kHeapSize = 1024 * 1024;
18  jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
19  __tsan_java_init(jheap, kHeapSize);
20  const int kBlockSize = 16;
21  __tsan_java_alloc(jheap, kBlockSize);
22  varaddr = jheap;
23  lockaddr = jheap + 8;
24  pthread_t th;
25  pthread_create(&th, 0, Thread, 0);
26  __tsan_java_mutex_lock(lockaddr);
27  *(int*)varaddr = 43;
28  __tsan_java_mutex_unlock(lockaddr);
29  barrier_wait(&barrier);
30  pthread_join(th, 0);
31  __tsan_java_free(jheap, kBlockSize);
32  fprintf(stderr, "DONE\n");
33  return __tsan_java_fini();
34}
35
36// CHECK-NOT: WARNING: ThreadSanitizer: data race
37// CHECK: DONE
38