UnwindCurrent.h revision 17224d57fbc690051fbfecdc95140ead21305ba3 
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _LIBBACKTRACE_UNWIND_CURRENT_H
18#define _LIBBACKTRACE_UNWIND_CURRENT_H
19
20#include <string>
21
22#include "BacktraceImpl.h"
23#include "BacktraceThread.h"
24
25#define UNW_LOCAL_ONLY
26#include <libunwind.h>
27
28class UnwindCurrent : public BacktraceImpl {
29public:
30  UnwindCurrent();
31  virtual ~UnwindCurrent();
32
33  virtual bool Unwind(size_t num_ignore_frames);
34
35  virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset);
36
37  bool UnwindFromContext(size_t num_ignore_frames, bool within_handler);
38
39  void ExtractContext(void* sigcontext);
40
41protected:
42  unw_context_t context_;
43};
44
45class UnwindThread : public UnwindCurrent, public BacktraceThreadInterface {
46public:
47  UnwindThread();
48  virtual ~UnwindThread();
49
50  virtual void ThreadUnwind(
51      siginfo_t* siginfo, void* sigcontext, size_t num_ignore_frames);
52};
53
54#endif // _LIBBACKTRACE_UNWIND_CURRENT_H
55