75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_CPUGAUGE_H
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#define ANDROID_CPUGAUGE_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Timers.h>
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#include <ui/SurfaceComposerClient.h>
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namespace android {
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class CPUGauge : public Thread
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{
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public:
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CPUGauge( const sp<ISurfaceComposer>& composer,
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nsecs_t interval=s2ns(1),
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int clock=SYSTEM_TIME_THREAD,
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int refclock=SYSTEM_TIME_MONOTONIC);
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~CPUGauge();
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const sp<SurfaceComposerClient>& session() const;
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void sample();
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inline float cpuUsage() const { return mCpuUsage; }
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inline float idle() const { return mIdleTime; }
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private:
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virtual void onFirstRef();
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virtual status_t readyToRun();
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virtual bool threadLoop();
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Mutex mLock;
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sp<SurfaceComposerClient> mSession;
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const nsecs_t mInterval;
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const int mClock;
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const int mRefClock;
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nsecs_t mReferenceTime;
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nsecs_t mReferenceWorkingTime;
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float mCpuUsage;
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nsecs_t mRefIdleTime;
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float mIdleTime;
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FILE* mFd;
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};
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}; // namespace android
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#endif // ANDROID_CPUGAUGE_H
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