1// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
2#include "java.h"
3#include <unistd.h>
4
5jptr varaddr;
6jptr lockaddr;
7
8void *Thread(void *p) {
9  sleep(1);
10  __tsan_java_mutex_read_lock(lockaddr);
11  *(int*)varaddr = 42;
12  __tsan_java_mutex_read_unlock(lockaddr);
13  return 0;
14}
15
16int main() {
17  int const kHeapSize = 1024 * 1024;
18  void *jheap = malloc(kHeapSize);
19  __tsan_java_init((jptr)jheap, kHeapSize);
20  const int kBlockSize = 16;
21  __tsan_java_alloc((jptr)jheap, kBlockSize);
22  varaddr = (jptr)jheap;
23  lockaddr = (jptr)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  pthread_join(th, 0);
30  __tsan_java_free((jptr)jheap, kBlockSize);
31  printf("OK\n");
32  return __tsan_java_fini();
33}
34
35// CHECK-NOT: WARNING: ThreadSanitizer: data race
36