/*
* Copyright (C) 2009 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.os;
import android.os.PerformanceCollector.PerformanceResultsWriter;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.SmallTest;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Random;
import junit.framework.TestCase;
public class PerformanceCollectorTest extends TestCase {
private PerformanceCollector mPerfCollector;
@Override
protected void setUp() throws Exception {
super.setUp();
mPerfCollector = new PerformanceCollector();
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
mPerfCollector = null;
}
@SmallTest
public void testBeginSnapshotNoWriter() throws Exception {
mPerfCollector.beginSnapshot("testBeginSnapshotNoWriter");
assertTrue((Long)readPrivateField("mSnapshotCpuTime", mPerfCollector) > 0);
assertTrue((Long)readPrivateField("mSnapshotExecTime", mPerfCollector) > 0);
Bundle snapshot = (Bundle)readPrivateField("mPerfSnapshot", mPerfCollector);
assertNotNull(snapshot);
assertEquals(2, snapshot.size());
}
@MediumTest
public void testEndSnapshotNoWriter() throws Exception {
mPerfCollector.beginSnapshot("testEndSnapshotNoWriter");
workForRandomLongPeriod();
Bundle snapshot = mPerfCollector.endSnapshot();
verifySnapshotBundle(snapshot);
}
@SmallTest
public void testStartTimingNoWriter() throws Exception {
mPerfCollector.startTiming("testStartTimingNoWriter");
assertTrue((Long)readPrivateField("mCpuTime", mPerfCollector) > 0);
assertTrue((Long)readPrivateField("mExecTime", mPerfCollector) > 0);
Bundle measurement = (Bundle)readPrivateField("mPerfMeasurement", mPerfCollector);
assertNotNull(measurement);
verifyTimingBundle(measurement, new ArrayList<String>());
}
@SmallTest
public void testAddIterationNoWriter() throws Exception {
mPerfCollector.startTiming("testAddIterationNoWriter");
workForRandomTinyPeriod();
Bundle iteration = mPerfCollector.addIteration("timing1");
verifyIterationBundle(iteration, "timing1");
}
@SmallTest
public void testStopTimingNoWriter() throws Exception {
mPerfCollector.startTiming("testStopTimingNoWriter");
workForRandomTinyPeriod();
mPerfCollector.addIteration("timing2");
workForRandomTinyPeriod();
mPerfCollector.addIteration("timing3");
workForRandomShortPeriod();
Bundle timing = mPerfCollector.stopTiming("timing4");
ArrayList<String> labels = new ArrayList<String>();
labels.add("timing2");
labels.add("timing3");
labels.add("timing4");
verifyTimingBundle(timing, labels);
}
@SmallTest
public void testBeginSnapshot() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.beginSnapshot("testBeginSnapshot");
assertEquals("testBeginSnapshot", writer.snapshotLabel);
assertTrue((Long)readPrivateField("mSnapshotCpuTime", mPerfCollector) > 0);
assertTrue((Long)readPrivateField("mSnapshotExecTime", mPerfCollector) > 0);
Bundle snapshot = (Bundle)readPrivateField("mPerfSnapshot", mPerfCollector);
assertNotNull(snapshot);
assertEquals(2, snapshot.size());
}
@MediumTest
public void testEndSnapshot() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.beginSnapshot("testEndSnapshot");
workForRandomLongPeriod();
Bundle snapshot1 = mPerfCollector.endSnapshot();
Bundle snapshot2 = writer.snapshotResults;
assertEqualsBundle(snapshot1, snapshot2);
verifySnapshotBundle(snapshot1);
}
@SmallTest
public void testStartTiming() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.startTiming("testStartTiming");
assertEquals("testStartTiming", writer.timingLabel);
assertTrue((Long)readPrivateField("mCpuTime", mPerfCollector) > 0);
assertTrue((Long)readPrivateField("mExecTime", mPerfCollector) > 0);
Bundle measurement = (Bundle)readPrivateField("mPerfMeasurement", mPerfCollector);
assertNotNull(measurement);
verifyTimingBundle(measurement, new ArrayList<String>());
}
@SmallTest
public void testAddIteration() throws Exception {
mPerfCollector.startTiming("testAddIteration");
workForRandomTinyPeriod();
Bundle iteration = mPerfCollector.addIteration("timing5");
verifyIterationBundle(iteration, "timing5");
}
@SmallTest
public void testStopTiming() throws Exception {
mPerfCollector.startTiming("testStopTiming");
workForRandomTinyPeriod();
mPerfCollector.addIteration("timing6");
workForRandomTinyPeriod();
mPerfCollector.addIteration("timing7");
workForRandomShortPeriod();
Bundle timing = mPerfCollector.stopTiming("timing8");
ArrayList<String> labels = new ArrayList<String>();
labels.add("timing6");
labels.add("timing7");
labels.add("timing8");
verifyTimingBundle(timing, labels);
}
@SmallTest
public void testAddMeasurementLong() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.startTiming("testAddMeasurementLong");
mPerfCollector.addMeasurement("testAddMeasurementLongZero", 0);
mPerfCollector.addMeasurement("testAddMeasurementLongPos", 348573);
mPerfCollector.addMeasurement("testAddMeasurementLongNeg", -19354);
mPerfCollector.stopTiming("");
assertEquals("testAddMeasurementLong", writer.timingLabel);
Bundle results = writer.timingResults;
assertEquals(4, results.size());
assertTrue(results.containsKey("testAddMeasurementLongZero"));
assertEquals(0, results.getLong("testAddMeasurementLongZero"));
assertTrue(results.containsKey("testAddMeasurementLongPos"));
assertEquals(348573, results.getLong("testAddMeasurementLongPos"));
assertTrue(results.containsKey("testAddMeasurementLongNeg"));
assertEquals(-19354, results.getLong("testAddMeasurementLongNeg"));
}
@SmallTest
public void testAddMeasurementFloat() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.startTiming("testAddMeasurementFloat");
mPerfCollector.addMeasurement("testAddMeasurementFloatZero", 0.0f);
mPerfCollector.addMeasurement("testAddMeasurementFloatPos", 348573.345f);
mPerfCollector.addMeasurement("testAddMeasurementFloatNeg", -19354.093f);
mPerfCollector.stopTiming("");
assertEquals("testAddMeasurementFloat", writer.timingLabel);
Bundle results = writer.timingResults;
assertEquals(4, results.size());
assertTrue(results.containsKey("testAddMeasurementFloatZero"));
assertEquals(0.0f, results.getFloat("testAddMeasurementFloatZero"));
assertTrue(results.containsKey("testAddMeasurementFloatPos"));
assertEquals(348573.345f, results.getFloat("testAddMeasurementFloatPos"));
assertTrue(results.containsKey("testAddMeasurementFloatNeg"));
assertEquals(-19354.093f, results.getFloat("testAddMeasurementFloatNeg"));
}
@SmallTest
public void testAddMeasurementString() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.startTiming("testAddMeasurementString");
mPerfCollector.addMeasurement("testAddMeasurementStringNull", null);
mPerfCollector.addMeasurement("testAddMeasurementStringEmpty", "");
mPerfCollector.addMeasurement("testAddMeasurementStringNonEmpty", "Hello World");
mPerfCollector.stopTiming("");
assertEquals("testAddMeasurementString", writer.timingLabel);
Bundle results = writer.timingResults;
assertEquals(4, results.size());
assertTrue(results.containsKey("testAddMeasurementStringNull"));
assertNull(results.getString("testAddMeasurementStringNull"));
assertTrue(results.containsKey("testAddMeasurementStringEmpty"));
assertEquals("", results.getString("testAddMeasurementStringEmpty"));
assertTrue(results.containsKey("testAddMeasurementStringNonEmpty"));
assertEquals("Hello World", results.getString("testAddMeasurementStringNonEmpty"));
}
@MediumTest
public void testSimpleSequence() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.beginSnapshot("testSimpleSequence");
mPerfCollector.startTiming("testSimpleSequenceTiming");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration1");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration2");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration3");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration4");
workForRandomShortPeriod();
Bundle timing = mPerfCollector.stopTiming("iteration5");
workForRandomLongPeriod();
Bundle snapshot1 = mPerfCollector.endSnapshot();
Bundle snapshot2 = writer.snapshotResults;
assertEqualsBundle(snapshot1, snapshot2);
verifySnapshotBundle(snapshot1);
ArrayList<String> labels = new ArrayList<String>();
labels.add("iteration1");
labels.add("iteration2");
labels.add("iteration3");
labels.add("iteration4");
labels.add("iteration5");
verifyTimingBundle(timing, labels);
}
@MediumTest
public void testLongSequence() throws Exception {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.beginSnapshot("testLongSequence");
mPerfCollector.startTiming("testLongSequenceTiming1");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration1");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration2");
workForRandomShortPeriod();
Bundle timing1 = mPerfCollector.stopTiming("iteration3");
workForRandomLongPeriod();
mPerfCollector.startTiming("testLongSequenceTiming2");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration4");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration5");
workForRandomShortPeriod();
Bundle timing2 = mPerfCollector.stopTiming("iteration6");
workForRandomLongPeriod();
mPerfCollector.startTiming("testLongSequenceTiming3");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration7");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration8");
workForRandomShortPeriod();
Bundle timing3 = mPerfCollector.stopTiming("iteration9");
workForRandomLongPeriod();
mPerfCollector.startTiming("testLongSequenceTiming4");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration10");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration11");
workForRandomShortPeriod();
Bundle timing4 = mPerfCollector.stopTiming("iteration12");
workForRandomLongPeriod();
mPerfCollector.startTiming("testLongSequenceTiming5");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration13");
workForRandomTinyPeriod();
mPerfCollector.addIteration("iteration14");
workForRandomShortPeriod();
Bundle timing5 = mPerfCollector.stopTiming("iteration15");
workForRandomLongPeriod();
Bundle snapshot1 = mPerfCollector.endSnapshot();
Bundle snapshot2 = writer.snapshotResults;
assertEqualsBundle(snapshot1, snapshot2);
verifySnapshotBundle(snapshot1);
ArrayList<String> labels1 = new ArrayList<String>();
labels1.add("iteration1");
labels1.add("iteration2");
labels1.add("iteration3");
verifyTimingBundle(timing1, labels1);
ArrayList<String> labels2 = new ArrayList<String>();
labels2.add("iteration4");
labels2.add("iteration5");
labels2.add("iteration6");
verifyTimingBundle(timing2, labels2);
ArrayList<String> labels3 = new ArrayList<String>();
labels3.add("iteration7");
labels3.add("iteration8");
labels3.add("iteration9");
verifyTimingBundle(timing3, labels3);
ArrayList<String> labels4 = new ArrayList<String>();
labels4.add("iteration10");
labels4.add("iteration11");
labels4.add("iteration12");
verifyTimingBundle(timing4, labels4);
ArrayList<String> labels5 = new ArrayList<String>();
labels5.add("iteration13");
labels5.add("iteration14");
labels5.add("iteration15");
verifyTimingBundle(timing5, labels5);
}
/*
* Verify that snapshotting and timing do not interfere w/ each other,
* by staggering calls to snapshot and timing functions.
*/
@MediumTest
public void testOutOfOrderSequence() {
MockPerformanceResultsWriter writer = new MockPerformanceResultsWriter();
mPerfCollector.setPerformanceResultsWriter(writer);
mPerfCollector.startTiming("testOutOfOrderSequenceTiming");
workForRandomShortPeriod();
mPerfCollector.beginSnapshot("testOutOfOrderSequenceSnapshot");
workForRandomShortPeriod();
Bundle timing1 = mPerfCollector.stopTiming("timing1");
workForRandomShortPeriod();
Bundle snapshot1 = mPerfCollector.endSnapshot();
Bundle timing2 = writer.timingResults;
Bundle snapshot2 = writer.snapshotResults;
assertEqualsBundle(snapshot1, snapshot2);
verifySnapshotBundle(snapshot1);
assertEqualsBundle(timing1, timing2);
ArrayList<String> labels = new ArrayList<String>();
labels.add("timing1");
verifyTimingBundle(timing1, labels);
}
private void workForRandomPeriod(int minDuration, int maxDuration) {
Random random = new Random();
int period = minDuration + random.nextInt(maxDuration - minDuration);
long start = Process.getElapsedCpuTime();
// Generate positive amount of work, so cpu time is measurable in
// milliseconds
while (Process.getElapsedCpuTime() - start < period) {
for (int i = 0, temp = 0; i < 50; i++ ) {
temp += i;
}
}
}
private void workForRandomTinyPeriod() {
workForRandomPeriod(2, 5);
}
private void workForRandomShortPeriod() {
workForRandomPeriod(10, 25);
}
private void workForRandomLongPeriod() {
workForRandomPeriod(50, 100);
}
private void verifySnapshotBundle(Bundle snapshot) {
assertTrue("At least 26 metrics collected", 26 <= snapshot.size());
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_CPU_TIME));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_CPU_TIME) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_EXECUTION_TIME));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_EXECUTION_TIME) > 0);
assertTrue(snapshot.containsKey(
PerformanceCollector.METRIC_KEY_PRE_RECEIVED_TRANSACTIONS));
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_PRE_SENT_TRANSACTIONS));
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_RECEIVED_TRANSACTIONS));
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_SENT_TRANSACTIONS));
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_GC_INVOCATION_COUNT));
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_JAVA_ALLOCATED));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_JAVA_ALLOCATED) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_JAVA_FREE));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_JAVA_FREE) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_JAVA_PRIVATE_DIRTY));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_JAVA_PRIVATE_DIRTY) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_JAVA_PSS));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_JAVA_PSS) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_JAVA_SHARED_DIRTY));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_JAVA_SHARED_DIRTY) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_JAVA_SIZE));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_JAVA_SIZE) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_NATIVE_ALLOCATED));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_NATIVE_ALLOCATED) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_NATIVE_FREE));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_NATIVE_FREE) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_NATIVE_PRIVATE_DIRTY));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_NATIVE_PRIVATE_DIRTY) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_NATIVE_PSS));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_NATIVE_PSS) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_NATIVE_SHARED_DIRTY));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_NATIVE_SHARED_DIRTY) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_NATIVE_SIZE));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_NATIVE_SIZE) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_GLOBAL_ALLOC_COUNT));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_GLOBAL_ALLOC_COUNT) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_GLOBAL_ALLOC_SIZE));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_GLOBAL_ALLOC_SIZE) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_GLOBAL_FREED_COUNT));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_GLOBAL_FREED_COUNT) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_GLOBAL_FREED_SIZE));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_GLOBAL_FREED_SIZE) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_OTHER_PRIVATE_DIRTY));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_OTHER_PRIVATE_DIRTY) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_OTHER_PSS));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_OTHER_PSS) > 0);
assertTrue(snapshot.containsKey(PerformanceCollector.METRIC_KEY_OTHER_SHARED_DIRTY));
assertTrue(snapshot.getLong(PerformanceCollector.METRIC_KEY_OTHER_SHARED_DIRTY) > 0);
}
private void verifyIterationBundle(Bundle iteration, String label) {
assertEquals(3, iteration.size());
assertTrue(iteration.containsKey(PerformanceCollector.METRIC_KEY_LABEL));
assertEquals(label, iteration.getString(PerformanceCollector.METRIC_KEY_LABEL));
assertTrue(iteration.containsKey(PerformanceCollector.METRIC_KEY_CPU_TIME));
assertTrue(iteration.getLong(PerformanceCollector.METRIC_KEY_CPU_TIME) > 0);
assertTrue(iteration.containsKey(PerformanceCollector.METRIC_KEY_EXECUTION_TIME));
assertTrue(iteration.getLong(PerformanceCollector.METRIC_KEY_EXECUTION_TIME) > 0);
}
private void verifyTimingBundle(Bundle timing, ArrayList<String> labels) {
assertEquals(1, timing.size());
assertTrue(timing.containsKey(PerformanceCollector.METRIC_KEY_ITERATIONS));
ArrayList<Parcelable> iterations = timing.getParcelableArrayList(
PerformanceCollector.METRIC_KEY_ITERATIONS);
assertNotNull(iterations);
assertEquals(labels.size(), iterations.size());
for (int i = 0; i < labels.size(); i ++) {
Bundle iteration = (Bundle)iterations.get(i);
verifyIterationBundle(iteration, labels.get(i));
}
}
private void assertEqualsBundle(Bundle b1, Bundle b2) {
assertEquals(b1.keySet(), b2.keySet());
for (String key : b1.keySet()) {
assertEquals(b1.get(key), b2.get(key));
}
}
private Object readPrivateField(String fieldName, Object object) throws Exception {
Field f = object.getClass().getDeclaredField(fieldName);
f.setAccessible(true);
return f.get(object);
}
private class MockPerformanceResultsWriter implements PerformanceResultsWriter {
public String snapshotLabel;
public Bundle snapshotResults = new Bundle();
public String timingLabel;
public Bundle timingResults = new Bundle();
public void writeBeginSnapshot(String label) {
snapshotLabel = label;
}
public void writeEndSnapshot(Bundle results) {
snapshotResults.putAll(results);
}
public void writeStartTiming(String label) {
timingLabel = label;
}
public void writeStopTiming(Bundle results) {
timingResults.putAll(results);
}
public void writeMeasurement(String label, long value) {
timingResults.putLong(label, value);
}
public void writeMeasurement(String label, float value) {
timingResults.putFloat(label, value);
}
public void writeMeasurement(String label, String value) {
timingResults.putString(label, value);
}
}
}
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