blob: 033170e7a61d6307fca278d3d56e9830716cde66 (
plain)
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
|
//===-- sanitizer_stoptheworld_testlib.cc ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Dynamic library to test StopTheWorld functionality.
// When loaded with LD_PRELOAD, it will periodically suspend all threads.
//===----------------------------------------------------------------------===//
/* Usage:
clang++ -fno-exceptions -g -fPIC -I. \
sanitizer_common/tests/sanitizer_stoptheworld_testlib.cc \
sanitizer_common/sanitizer_*.cc -shared -lpthread -o teststoptheworld.so
LD_PRELOAD=`pwd`/teststoptheworld.so /your/app
*/
#include "sanitizer_common/sanitizer_platform.h"
#if SANITIZER_LINUX
#include <dlfcn.h>
#include <stddef.h>
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
#include "sanitizer_common/sanitizer_stoptheworld.h"
namespace {
const uptr kSuspendDuration = 3;
const uptr kRunDuration = 3;
void Callback(const SuspendedThreadsList &suspended_threads_list,
void *argument) {
sleep(kSuspendDuration);
}
void *SuspenderThread(void *argument) {
while (true) {
sleep(kRunDuration);
StopTheWorld(Callback, NULL);
}
return NULL;
}
__attribute__((constructor)) void StopTheWorldTestLibConstructor(void) {
pthread_t thread_id;
pthread_create(&thread_id, NULL, SuspenderThread, NULL);
}
} // namespace
#endif // SANITIZER_LINUX
|
