170 lines
4.8 KiB
C++
170 lines
4.8 KiB
C++
/*
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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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#include <stdint.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <math.h>
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#include <utils/threads.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <ui/PixelFormat.h>
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#include <ui/Rect.h>
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#include <ui/Region.h>
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#include <ui/DisplayInfo.h>
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#include <ui/ISurfaceComposer.h>
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#include <ui/ISurfaceFlingerClient.h>
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#include <pixelflinger/pixelflinger.h>
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#include "CPUGauge.h"
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namespace android {
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CPUGauge::CPUGauge( const sp<ISurfaceComposer>& composer,
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nsecs_t interval,
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int clock,
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int refclock)
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: Thread(false),
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mInterval(interval), mClock(clock), mRefClock(refclock),
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mReferenceTime(0),
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mReferenceWorkingTime(0), mCpuUsage(0),
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mRefIdleTime(0), mIdleTime(0)
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{
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mFd = fopen("/proc/stat", "r");
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setvbuf(mFd, NULL, _IONBF, 0);
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mSession = SurfaceComposerClient::clientForConnection(
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composer->createConnection()->asBinder());
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}
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CPUGauge::~CPUGauge()
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{
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fclose(mFd);
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}
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const sp<SurfaceComposerClient>& CPUGauge::session() const
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{
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return mSession;
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}
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void CPUGauge::onFirstRef()
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{
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run("CPU Gauge");
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}
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status_t CPUGauge::readyToRun()
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{
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LOGI("Starting CPU gauge...");
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return NO_ERROR;
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}
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bool CPUGauge::threadLoop()
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{
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DisplayInfo dinfo;
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session()->getDisplayInfo(0, &dinfo);
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sp<Surface> s(session()->createSurface(getpid(), 0, dinfo.w, 4, PIXEL_FORMAT_OPAQUE));
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session()->openTransaction();
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s->setLayer(INT_MAX);
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session()->closeTransaction();
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static const GGLfixed colors[4][4] = {
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{ 0x00000, 0x10000, 0x00000, 0x10000 },
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{ 0x10000, 0x10000, 0x00000, 0x10000 },
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{ 0x10000, 0x00000, 0x00000, 0x10000 },
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{ 0x00000, 0x00000, 0x00000, 0x10000 },
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};
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GGLContext* gl;
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gglInit(&gl);
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gl->activeTexture(gl, 0);
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gl->disable(gl, GGL_TEXTURE_2D);
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gl->disable(gl, GGL_BLEND);
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const int w = dinfo.w;
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while(!exitPending())
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{
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mLock.lock();
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const float cpuUsage = this->cpuUsage();
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const float totalCpuUsage = 1.0f - idle();
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mLock.unlock();
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Surface::SurfaceInfo info;
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s->lock(&info);
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GGLSurface fb;
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fb.version = sizeof(GGLSurface);
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fb.width = info.w;
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fb.height = info.h;
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fb.stride = info.s;
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fb.format = info.format;
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fb.data = (GGLubyte*)info.bits;
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gl->colorBuffer(gl, &fb);
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gl->color4xv(gl, colors[3]);
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gl->recti(gl, 0, 0, w, 4);
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gl->color4xv(gl, colors[2]); // red
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gl->recti(gl, 0, 0, int(totalCpuUsage*w), 2);
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gl->color4xv(gl, colors[0]); // green
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gl->recti(gl, 0, 2, int(cpuUsage*w), 4);
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s->unlockAndPost();
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usleep(ns2us(mInterval));
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}
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gglUninit(gl);
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return false;
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}
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void CPUGauge::sample()
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{
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if (mLock.tryLock() == NO_ERROR) {
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const nsecs_t now = systemTime(mRefClock);
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const nsecs_t referenceTime = now-mReferenceTime;
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if (referenceTime >= mInterval) {
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const float reftime = 1.0f / referenceTime;
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const nsecs_t nowWorkingTime = systemTime(mClock);
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char buf[256];
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fgets(buf, 256, mFd);
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rewind(mFd);
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char *str = buf+5;
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char const * const usermode = strsep(&str, " "); (void)usermode;
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char const * const usernice = strsep(&str, " "); (void)usernice;
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char const * const systemmode = strsep(&str, " ");(void)systemmode;
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char const * const idle = strsep(&str, " ");
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const nsecs_t nowIdleTime = atoi(idle) * 10000000LL;
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mIdleTime = float(nowIdleTime - mRefIdleTime) * reftime;
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mRefIdleTime = nowIdleTime;
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const nsecs_t workingTime = nowWorkingTime - mReferenceWorkingTime;
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const float newCpuUsage = float(workingTime) * reftime;
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if (mCpuUsage != newCpuUsage) {
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mCpuUsage = newCpuUsage;
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mReferenceWorkingTime = nowWorkingTime;
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mReferenceTime = now;
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}
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}
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mLock.unlock();
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}
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}
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}; // namespace android
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