1 /*
2  * Copyright (C) 2014 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_MAP_H
18 #define _LIBBACKTRACE_UNWIND_MAP_H
19 
20 #include <stdint.h>
21 #include <sys/types.h>
22 
23 #include <backtrace/BacktraceMap.h>
24 
25 // The unw_map_cursor_t structure is different depending on whether it is
26 // the local or remote version. In order to get the correct version, include
27 // libunwind.h first then this header.
28 
29 class UnwindMap : public BacktraceMap {
30 public:
31   UnwindMap(pid_t pid);
32   virtual ~UnwindMap();
33 
34   virtual bool Build();
35 
GetMapCursor()36   unw_map_cursor_t* GetMapCursor() { return &map_cursor_; }
37 
38 protected:
39   virtual bool GenerateMap();
40 
41   unw_map_cursor_t map_cursor_;
42 };
43 
44 class UnwindMapLocal : public UnwindMap {
45 public:
46   UnwindMapLocal();
47   virtual ~UnwindMapLocal();
48 
49   virtual bool Build();
50 
51   virtual void FillIn(uintptr_t addr, backtrace_map_t* map);
52 
53 protected:
54   virtual bool GenerateMap();
55 
56   bool map_created_;
57 };
58 
59 #endif // _LIBBACKTRACE_UNWIND_MAP_H
60