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_PTRACE_H
18 #define _LIBBACKTRACE_UNWIND_PTRACE_H
19 
20 #include <stdint.h>
21 #include <sys/types.h>
22 
23 #include <string>
24 
25 #ifdef UNW_LOCAL_ONLY
26 #undef UNW_LOCAL_ONLY
27 #endif
28 #include <libunwind.h>
29 
30 #include "BacktracePtrace.h"
31 
32 class UnwindPtrace : public BacktracePtrace {
33 public:
34   UnwindPtrace(pid_t pid, pid_t tid, BacktraceMap* map);
35   virtual ~UnwindPtrace();
36 
37   bool Unwind(size_t num_ignore_frames, ucontext_t* ucontext) override;
38 
39   std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset) override;
40 
41 private:
42   unw_addr_space_t addr_space_;
43   struct UPT_info* upt_info_;
44 };
45 
46 #endif // _LIBBACKTRACE_UNWIND_PTRACE_H
47