/* * Copyright (C) 2007 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_CPUGAUGE_H #define ANDROID_CPUGAUGE_H #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include <sys/types.h> #include <utils/Timers.h> #include <ui/SurfaceComposerClient.h> namespace android { class CPUGauge : public Thread { public: CPUGauge( const sp<ISurfaceComposer>& composer, nsecs_t interval=s2ns(1), int clock=SYSTEM_TIME_THREAD, int refclock=SYSTEM_TIME_MONOTONIC); ~CPUGauge(); const sp<SurfaceComposerClient>& session() const; void sample(); inline float cpuUsage() const { return mCpuUsage; } inline float idle() const { return mIdleTime; } private: virtual void onFirstRef(); virtual status_t readyToRun(); virtual bool threadLoop(); Mutex mLock; sp<SurfaceComposerClient> mSession; const nsecs_t mInterval; const int mClock; const int mRefClock; nsecs_t mReferenceTime; nsecs_t mReferenceWorkingTime; float mCpuUsage; nsecs_t mRefIdleTime; float mIdleTime; FILE* mFd; }; }; // namespace android #endif // ANDROID_CPUGAUGE_H