java_lock_rec.cpp
1.44 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include "java.h"
jptr varaddr;
jptr lockaddr;
void *Thread(void *p) {
__tsan_java_mutex_lock(lockaddr);
__tsan_java_mutex_lock(lockaddr);
*(int*)varaddr = 42;
int rec = __tsan_java_mutex_unlock_rec(lockaddr);
if (rec != 2) {
fprintf(stderr, "FAILED 0 rec=%d\n", rec);
exit(1);
}
barrier_wait(&barrier);
barrier_wait(&barrier);
__tsan_java_mutex_lock_rec(lockaddr, rec);
if (*(int*)varaddr != 43) {
fprintf(stderr, "FAILED 3 var=%d\n", *(int*)varaddr);
exit(1);
}
__tsan_java_mutex_unlock(lockaddr);
__tsan_java_mutex_unlock(lockaddr);
return 0;
}
int main() {
barrier_init(&barrier, 2);
int const kHeapSize = 1024 * 1024;
jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
__tsan_java_init(jheap, kHeapSize);
const int kBlockSize = 16;
__tsan_java_alloc(jheap, kBlockSize);
varaddr = jheap;
*(int*)varaddr = 0;
lockaddr = jheap + 8;
pthread_t th;
pthread_create(&th, 0, Thread, 0);
barrier_wait(&barrier);
__tsan_java_mutex_lock(lockaddr);
if (*(int*)varaddr != 42) {
fprintf(stderr, "FAILED 1 var=%d\n", *(int*)varaddr);
exit(1);
}
*(int*)varaddr = 43;
__tsan_java_mutex_unlock(lockaddr);
barrier_wait(&barrier);
pthread_join(th, 0);
__tsan_java_free(jheap, kBlockSize);
fprintf(stderr, "DONE\n");
return __tsan_java_fini();
}
// CHECK-NOT: WARNING: ThreadSanitizer: data race
// CHECK-NOT: FAILED
// CHECK: DONE