58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
/*
|
|
* Copyright (C) 2013 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 _LIBBACKTRACE_BACKTRACE_CURRENT_H
|
|
#define _LIBBACKTRACE_BACKTRACE_CURRENT_H
|
|
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <backtrace/Backtrace.h>
|
|
|
|
// The signal used to cause a thread to dump the stack.
|
|
#if defined(__GLIBC__)
|
|
// In order to run the backtrace_tests on the host, we can't use
|
|
// the internal real time signals used by GLIBC. To avoid this,
|
|
// use SIGRTMIN for the signal to dump the stack.
|
|
#define THREAD_SIGNAL SIGRTMIN
|
|
#else
|
|
#define THREAD_SIGNAL (__SIGRTMIN+1)
|
|
#endif
|
|
|
|
class BacktraceMap;
|
|
|
|
class BacktraceCurrent : public Backtrace {
|
|
public:
|
|
BacktraceCurrent(pid_t pid, pid_t tid, BacktraceMap* map) : Backtrace(pid, tid, map) {}
|
|
virtual ~BacktraceCurrent() {}
|
|
|
|
size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override;
|
|
|
|
bool ReadWord(uint64_t ptr, word_t* out_value) override;
|
|
|
|
bool Unwind(size_t num_ignore_frames, void* ucontext) override;
|
|
|
|
protected:
|
|
bool DiscardFrame(const backtrace_frame_data_t& frame);
|
|
|
|
private:
|
|
bool UnwindThread(size_t num_ignore_frames);
|
|
|
|
virtual bool UnwindFromContext(size_t num_ignore_frames, void* ucontext) = 0;
|
|
};
|
|
|
|
#endif // _LIBBACKTRACE_BACKTRACE_CURRENT_H
|