| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| #ifndef ANDROID_TIME_CHECK_H |
| #define ANDROID_TIME_CHECK_H |
| |
| #include <utils/KeyedVector.h> |
| #include <utils/Thread.h> |
| |
| |
| namespace android { |
| |
| // A class monitoring execution time for a code block (scoped variable) and causing an assert |
| // if it exceeds a certain time |
| |
| class TimeCheck { |
| public: |
| |
| // The default timeout is chosen to be less than system server watchdog timeout |
| static constexpr uint32_t kDefaultTimeOutMs = 5000; |
| |
| TimeCheck(const char *tag, uint32_t timeoutMs = kDefaultTimeOutMs); |
| ~TimeCheck(); |
| |
| private: |
| |
| class TimeCheckThread : public Thread { |
| public: |
| |
| TimeCheckThread() {} |
| virtual ~TimeCheckThread() override; |
| |
| nsecs_t startMonitoring(const char *tag, uint32_t timeoutMs); |
| void stopMonitoring(nsecs_t endTimeNs); |
| |
| private: |
| |
| // RefBase |
| virtual void onFirstRef() override { run("TimeCheckThread", PRIORITY_URGENT_AUDIO); } |
| |
| // Thread |
| virtual bool threadLoop() override; |
| |
| Condition mCond; |
| Mutex mMutex; |
| // using the end time in ns as key is OK given the risk is low that two entries |
| // are added in such a way that <add time> + <timeout> are the same for both. |
| KeyedVector< nsecs_t, const char*> mMonitorRequests; |
| }; |
| |
| static sp<TimeCheckThread> getTimeCheckThread(); |
| |
| const nsecs_t mEndTimeNs; |
| }; |
| |
| }; // namespace android |
| |
| #endif // ANDROID_TIME_CHECK_H |