1 // RUN: %clangxx_tsan -O1 %s -o %t
2 // RUN: %deflake %run %t | FileCheck %s
3 // RUN: %deflake %run %t arg | FileCheck %s
4 #include "java.h"
5
6 jptr varaddr1_old;
7 jptr varaddr2_old;
8 jptr varaddr1_new;
9 jptr varaddr2_new;
10
Thread(void * p)11 void *Thread(void *p) {
12 sleep(1);
13 *(int*)varaddr1_new = 43;
14 *(int*)varaddr2_new = 43;
15 return 0;
16 }
17
main(int argc,char ** argv)18 int main(int argc, char **argv) {
19 int const kHeapSize = 1024 * 1024;
20 void *jheap = malloc(kHeapSize);
21 jheap = (char*)jheap + 8;
22 __tsan_java_init((jptr)jheap, kHeapSize);
23 const int kBlockSize = 64;
24 int const kMove = 32;
25 varaddr1_old = (jptr)jheap;
26 varaddr2_old = (jptr)jheap + kBlockSize - 1;
27 varaddr1_new = varaddr1_old + kMove;
28 varaddr2_new = varaddr2_old + kMove;
29 if (argc > 1) {
30 // Move memory backwards.
31 varaddr1_old += kMove;
32 varaddr2_old += kMove;
33 varaddr1_new -= kMove;
34 varaddr2_new -= kMove;
35 }
36 __tsan_java_alloc(varaddr1_old, kBlockSize);
37
38 pthread_t th;
39 pthread_create(&th, 0, Thread, 0);
40
41 *(int*)varaddr1_old = 43;
42 *(int*)varaddr2_old = 43;
43
44 __tsan_java_move(varaddr1_old, varaddr1_new, kBlockSize);
45 pthread_join(th, 0);
46 __tsan_java_free(varaddr1_new, kBlockSize);
47 printf("DONE\n");
48 return __tsan_java_fini();
49 }
50
51 // CHECK: WARNING: ThreadSanitizer: data race
52 // CHECK: WARNING: ThreadSanitizer: data race
53 // CHECK: DONE
54