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
|
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LIBMEMUNREACHABLE_PTRACER_THREAD_H_
#define LIBMEMUNREACHABLE_PTRACER_THREAD_H_
#include <functional>
#include <mutex>
#include "android-base/macros.h"
#include "Allocator.h"
namespace android {
class Stack;
// PtracerThread is similar to std::thread, except that it creates a "thread"
// that can ptrace the other threads. The thread is actually a separate
// process, with its own thread group, but shares address space and fds with
// the parent.
class PtracerThread {
public:
explicit PtracerThread(const std::function<int()>& func);
~PtracerThread();
bool Start();
int Join();
private:
void SetTracer(pid_t);
void ClearTracer();
void Kill();
DISALLOW_COPY_AND_ASSIGN(PtracerThread);
std::unique_ptr<Stack> stack_;
std::function<int()> func_;
std::mutex m_;
pid_t child_pid_;
};
} // namespace android
#endif // LIBMEMUNREACHABLE_PTRACER_THREAD_H_
|
