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