1 /*
2  * Copyright (C) 2020 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 SRC_PROFILING_SYMBOLIZER_SCOPED_READ_MMAP_H_
18 #define SRC_PROFILING_SYMBOLIZER_SCOPED_READ_MMAP_H_
19 
20 #include "perfetto/ext/base/scoped_file.h"
21 
22 namespace perfetto {
23 namespace profiling {
24 
25 class ScopedReadMmap {
26  public:
27   ScopedReadMmap(const char* fname, size_t length);
28   virtual ~ScopedReadMmap();
29 
30   void* operator*() { return ptr_; }
31 
32   bool IsValid();
33 
34  private:
35   size_t length_;
36   void* ptr_;
37 #if PERFETTO_BUILDFLAG(PERFETTO_OS_WIN)
38   void* file_ = nullptr;
39   void* map_ = nullptr;
40 #else
41   base::ScopedFile fd_;
42 #endif
43 };
44 
45 }  // namespace profiling
46 }  // namespace perfetto
47 
48 #endif  // SRC_PROFILING_SYMBOLIZER_SCOPED_READ_MMAP_H_
49