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
| // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
#include "java.h"
#include <memory.h>
extern "C" void __tsan_symbolize_external_ex(
jptr pc, void (*add_frame)(void *, const char *, const char *, int, int),
void *ctx) {
if (pc == (1234 | kExternalPCBit)) {
add_frame(ctx, "MyInnerFunc", "MyInnerFile.java", 1234, 56);
add_frame(ctx, "MyOuterFunc", "MyOuterFile.java", 4321, 65);
}
}
void *Thread(void *p) {
barrier_wait(&barrier);
__tsan_write1_pc((jptr)p, 1234 | kExternalPCBit);
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);
pthread_t th;
pthread_create(&th, 0, Thread, (void*)jheap);
__tsan_write1_pc((jptr)jheap, 1234 | kExternalPCBit);
barrier_wait(&barrier);
pthread_join(th, 0);
__tsan_java_free(jheap, kBlockSize);
fprintf(stderr, "DONE\n");
return __tsan_java_fini();
}
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK: #0 MyInnerFunc MyInnerFile.java:1234:56
// CHECK: #1 MyOuterFunc MyOuterFile.java:4321:65
// CHECK: DONE
|