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/*
* Copyright (C) 2017 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.
*/
package android.multiuser;
import android.os.Bundle;
import android.os.SystemClock;
import android.support.test.InstrumentationRegistry;
import android.support.test.uiautomator.UiDevice;
import java.io.IOException;
import java.util.ArrayList;
// Based on //platform/frameworks/base/apct-tests/perftests/utils/BenchmarkState.java
public class BenchmarkRunner {
private static final long COOL_OFF_PERIOD_MS = 1000;
private static final int NUM_ITERATIONS = 4;
private static final int NOT_STARTED = 0; // The benchmark has not started yet.
private static final int RUNNING = 1; // The benchmark is running.
private static final int PAUSED = 2; // The benchmark is paused
private static final int FINISHED = 3; // The benchmark has stopped.
private final BenchmarkResults mResults = new BenchmarkResults();
private int mState = NOT_STARTED; // Current benchmark state.
private int mIteration;
public long mStartTimeNs;
public long mPausedDurationNs;
public long mPausedTimeNs;
public boolean keepRunning() {
switch (mState) {
case NOT_STARTED:
mState = RUNNING;
prepareForNextRun();
return true;
case RUNNING:
mIteration++;
return startNextTestRun();
case PAUSED:
throw new IllegalStateException("Benchmarking is in paused state");
case FINISHED:
throw new IllegalStateException("Benchmarking is finished");
default:
throw new IllegalStateException("BenchmarkRunner is in unknown state");
}
}
private boolean startNextTestRun() {
mResults.addDuration(System.nanoTime() - mStartTimeNs - mPausedDurationNs);
if (mIteration == NUM_ITERATIONS) {
mState = FINISHED;
return false;
} else {
prepareForNextRun();
return true;
}
}
private void prepareForNextRun() {
SystemClock.sleep(COOL_OFF_PERIOD_MS);
try {
UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
.executeShellCommand("am wait-for-broadcast-idle");
} catch (IOException e) {
throw new IllegalStateException("Cannot execute shell command", e);
}
mStartTimeNs = System.nanoTime();
mPausedDurationNs = 0;
}
public void pauseTiming() {
if (mState != RUNNING) {
throw new IllegalStateException("Unable to pause the runner: not running currently");
}
mPausedTimeNs = System.nanoTime();
mState = PAUSED;
}
public void resumeTiming() {
if (mState != PAUSED) {
throw new IllegalStateException("Unable to resume the runner: already running");
}
mPausedDurationNs += System.nanoTime() - mPausedTimeNs;
mState = RUNNING;
}
public Bundle getStatsToReport() {
return mResults.getStatsToReport();
}
public Bundle getStatsToLog() {
return mResults.getStatsToLog();
}
public ArrayList<Long> getAllDurations() {
return mResults.getAllDurations();
}
}
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