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