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 #include "watchdog.h"
18 
19 #include <chrono>
20 #include <thread>
21 
22 class MyWatchdog : public android::automotive::agl::utils::SystemdWatchdog {
23   protected:
IsHealthy()24     bool IsHealthy() override {
25         ++mCounter;
26         const bool ok = (mCounter <= 3);
27         fprintf(stderr, "watchdog health: %d %s\n", mCounter, (ok ? "true" : "false"));
28         return ok;
29     }
30 
31   private:
32     int mCounter = 0;
33 };
34 
main()35 int main() {
36     MyWatchdog wd;
37 
38     std::thread t1([]() {
39         while (true) std::this_thread::sleep_for(std::chrono::hours(1));
40     });
41 
42     t1.join();
43     return 0;
44 }
45