1 | /* |
2 | * Copyright 2015-present Facebook, Inc. |
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 | #pragma once |
17 | |
18 | #include <memory> |
19 | #include <stdexcept> |
20 | #include <vector> |
21 | |
22 | #include <glog/logging.h> |
23 | |
24 | #include <folly/portability/GTest.h> |
25 | |
26 | struct Watchdog { |
27 | static std::vector<Watchdog*>& creation_order(); |
28 | |
29 | Watchdog(); |
30 | |
31 | ~Watchdog() { |
32 | if (creation_order().back() != this) { |
33 | LOG(FATAL) << "Watchdog destruction order mismatch" ; |
34 | } |
35 | creation_order().pop_back(); |
36 | } |
37 | |
38 | const size_t serial_number; |
39 | size_t livingWatchdogCount() const { |
40 | return creation_order().size(); |
41 | } |
42 | |
43 | Watchdog(const Watchdog&) = delete; |
44 | Watchdog& operator=(const Watchdog&) = delete; |
45 | Watchdog(Watchdog&&) noexcept = default; |
46 | Watchdog& operator=(Watchdog&&) noexcept = default; |
47 | }; |
48 | |
49 | // Some basic types we use for tracking. |
50 | struct ChildWatchdog : public Watchdog {}; |
51 | struct GlobalWatchdog : public Watchdog {}; |
52 | struct UnregisteredWatchdog : public Watchdog {}; |
53 | |