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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 METRICSD_UPLOADER_CRASH_COUNTERS_H_
18 #define METRICSD_UPLOADER_CRASH_COUNTERS_H_
19 
20 #include <atomic>
21 
22 // This class is used to keep track of the crash counters.
23 // An instance of it will be used by both the binder thread (to increment the
24 // counters) and the uploader thread (to gather and reset the counters).
25 // As such, the internal counters are atomic uints to allow concurrent access.
26 class CrashCounters {
27  public:
28   CrashCounters();
29 
30   void IncrementKernelCrashCount();
31   unsigned int GetAndResetKernelCrashCount();
32 
33   void IncrementUserCrashCount();
34   unsigned int GetAndResetUserCrashCount();
35 
36   void IncrementUncleanShutdownCount();
37   unsigned int GetAndResetUncleanShutdownCount();
38 
39  private:
40   std::atomic_uint kernel_crashes_;
41   std::atomic_uint unclean_shutdowns_;
42   std::atomic_uint user_crashes_;
43 };
44 
45 #endif  // METRICSD_UPLOADER_CRASH_COUNTERS_H_
46