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 
GetMapCursor()33   unw_map_cursor_t* GetMapCursor() { return &map_cursor_; }
34 
35 protected:
36   unw_map_cursor_t map_cursor_;
37 };
38 
39 class UnwindMapRemote : public UnwindMap {
40 public:
41   UnwindMapRemote(pid_t pid);
42   virtual ~UnwindMapRemote();
43 
44   bool Build() override;
45 
46 private:
47   bool GenerateMap();
48 };
49 
50 class UnwindMapLocal : public UnwindMap {
51 public:
52   UnwindMapLocal();
53   virtual ~UnwindMapLocal();
54 
55   bool Build() override;
56 
57   void FillIn(uintptr_t addr, backtrace_map_t* map) override;
58 
59 private:
60   bool GenerateMap();
61 
62   bool map_created_;
63 };
64 
65 #endif // _LIBBACKTRACE_UNWIND_MAP_H
66