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1 // RUN: %clangxx_tsan -O1 %s -o %t
2 // RUN: %deflake %run %t 2>&1 | FileCheck %s
3 // RUN: %deflake %run %t arg 2>&1 | 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   barrier_wait(&barrier);
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   barrier_init(&barrier, 2);
20   int const kHeapSize = 1024 * 1024;
21   void *jheap = malloc(kHeapSize);
22   jheap = (char*)jheap + 8;
23   __tsan_java_init((jptr)jheap, kHeapSize);
24   const int kBlockSize = 64;
25   int const kMove = 32;
26   varaddr1_old = (jptr)jheap;
27   varaddr2_old = (jptr)jheap + kBlockSize - 1;
28   varaddr1_new = varaddr1_old + kMove;
29   varaddr2_new = varaddr2_old + kMove;
30   if (argc > 1) {
31     // Move memory backwards.
32     varaddr1_old += kMove;
33     varaddr2_old += kMove;
34     varaddr1_new -= kMove;
35     varaddr2_new -= kMove;
36   }
37   __tsan_java_alloc(varaddr1_old, kBlockSize);
38 
39   pthread_t th;
40   pthread_create(&th, 0, Thread, 0);
41 
42   *(int*)varaddr1_old = 43;
43   *(int*)varaddr2_old = 43;
44 
45   __tsan_java_move(varaddr1_old, varaddr1_new, kBlockSize);
46   barrier_wait(&barrier);
47   pthread_join(th, 0);
48   __tsan_java_free(varaddr1_new, kBlockSize);
49   fprintf(stderr, "DONE\n");
50   return __tsan_java_fini();
51 }
52 
53 // CHECK: WARNING: ThreadSanitizer: data race
54 // CHECK: WARNING: ThreadSanitizer: data race
55 // CHECK: DONE
56