1/*
2 * Copyright (C) 2015 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 _MEMORY_REPLAY_POINTERS_H
18#define _MEMORY_REPLAY_POINTERS_H
19
20#include <stdatomic.h>
21#include <stdint.h>
22
23struct pointer_data {
24  std::atomic_uintptr_t key_pointer;
25  void* pointer;
26};
27
28class Pointers {
29 public:
30  explicit Pointers(size_t max_allocs);
31  virtual ~Pointers();
32
33  void Add(uintptr_t key_pointer, void* pointer);
34
35  void* Remove(uintptr_t key_pointer);
36
37  size_t max_pointers() { return max_pointers_; }
38
39  void FreeAll();
40
41 private:
42  pointer_data* FindEmpty(uintptr_t key_pointer);
43  pointer_data* Find(uintptr_t key_pointer);
44  size_t GetHash(uintptr_t key_pointer);
45
46  pointer_data* pointers_ = nullptr;
47  size_t pointers_size_ = 0;
48  size_t max_pointers_ = 0;
49};
50
51#endif // _MEMORY_REPLAY_POINTERS_H
52