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
|
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
#include "java.h"
#include <memory.h>
#include <sanitizer/tsan_interface.h>
#if (__APPLE__)
__attribute__((weak)) // Required for dyld macOS 12.0+
#endif
__attribute__((disable_sanitizer_instrumentation))
extern "C" bool
__tsan_symbolize_external(jptr pc, char *func_buf, jptr func_siz,
char *file_buf, jptr file_siz, int *line, int *col) {
if (pc == (1234 | kExternalPCBit)) {
memcpy(func_buf, "MyFunc", sizeof("MyFunc"));
memcpy(file_buf, "MyFile.java", sizeof("MyFile.java"));
*line = 1234;
*col = 56;
return true;
}
return false;
}
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 MyFunc MyFile.java:1234:56
// CHECK: DONE
|
