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_THREAD_H
18#define _MEMORY_REPLAY_THREAD_H
19
20#include <pthread.h>
21#include <stdint.h>
22#include <sys/types.h>
23
24class Action;
25class Pointers;
26
27constexpr size_t ACTION_MEMORY_SIZE = 128;
28
29class Thread {
30 public:
31  Thread();
32  virtual ~Thread();
33
34  void WaitForReady();
35  void WaitForPending();
36  void SetPending();
37  void ClearPending();
38
39  Action* CreateAction(uintptr_t key_pointer, const char* type, const char* line);
40  void AddTimeNsecs(uint64_t nsecs) { total_time_nsecs_ += nsecs; }
41
42  void set_pointers(Pointers* pointers) { pointers_ = pointers; }
43  Pointers* pointers() { return pointers_; }
44
45  Action* GetAction() { return reinterpret_cast<Action*>(action_memory_); }
46
47 private:
48  pthread_mutex_t mutex_ = PTHREAD_MUTEX_INITIALIZER;
49  pthread_cond_t cond_;
50  bool pending_ = false;
51
52  pthread_t thread_id_;
53  pid_t tid_ = 0;
54  uint64_t total_time_nsecs_ = 0;
55
56  Pointers* pointers_ = nullptr;
57
58  // Per thread memory for an Action. Only one action can be processed.
59  // at a time.
60  static constexpr size_t ACTION_SIZE = 128;
61  uint8_t action_memory_[ACTION_SIZE];
62
63  friend class Threads;
64};
65
66#endif // _MEMORY_REPLAY_THREAD_H
67