auto import from //depot/cupcake/@135843
This commit is contained in:
The Android Open Source Project
@@ -1,283 +0,0 @@
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/*
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* Copyright (C) 2008 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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import java.io.Serializable;
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import java.io.IOException;
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.List;
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import java.util.ArrayList;
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import java.util.Arrays;
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/**
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* Memory usage information.
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*/
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class MemoryUsage implements Serializable {
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private static final long serialVersionUID = 0;
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static final MemoryUsage NOT_AVAILABLE = new MemoryUsage();
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static int errorCount = 0;
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static final int MAXIMUM_ERRORS = 10; // give up after this many fails
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final int nativeSharedPages;
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final int javaSharedPages;
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final int otherSharedPages;
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final int nativePrivatePages;
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final int javaPrivatePages;
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final int otherPrivatePages;
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final int allocCount;
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final int allocSize;
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final int freedCount;
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final int freedSize;
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final long nativeHeapSize;
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public MemoryUsage(String line) {
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String[] parsed = line.split(",");
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nativeSharedPages = Integer.parseInt(parsed[1]);
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javaSharedPages = Integer.parseInt(parsed[2]);
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otherSharedPages = Integer.parseInt(parsed[3]);
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nativePrivatePages = Integer.parseInt(parsed[4]);
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javaPrivatePages = Integer.parseInt(parsed[5]);
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otherPrivatePages = Integer.parseInt(parsed[6]);
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allocCount = Integer.parseInt(parsed[7]);
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allocSize = Integer.parseInt(parsed[8]);
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freedCount = Integer.parseInt(parsed[9]);
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freedSize = Integer.parseInt(parsed[10]);
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nativeHeapSize = Long.parseLong(parsed[11]);
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}
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MemoryUsage() {
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nativeSharedPages = -1;
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javaSharedPages = -1;
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otherSharedPages = -1;
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nativePrivatePages = -1;
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javaPrivatePages = -1;
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otherPrivatePages = -1;
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allocCount = -1;
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allocSize = -1;
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freedCount = -1;
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freedSize = -1;
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nativeHeapSize = -1;
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}
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MemoryUsage(int nativeSharedPages,
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int javaSharedPages,
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int otherSharedPages,
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int nativePrivatePages,
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int javaPrivatePages,
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int otherPrivatePages,
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int allocCount,
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int allocSize,
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int freedCount,
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int freedSize,
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long nativeHeapSize) {
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this.nativeSharedPages = nativeSharedPages;
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this.javaSharedPages = javaSharedPages;
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this.otherSharedPages = otherSharedPages;
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this.nativePrivatePages = nativePrivatePages;
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this.javaPrivatePages = javaPrivatePages;
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this.otherPrivatePages = otherPrivatePages;
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this.allocCount = allocCount;
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this.allocSize = allocSize;
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this.freedCount = freedCount;
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this.freedSize = freedSize;
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this.nativeHeapSize = nativeHeapSize;
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}
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MemoryUsage subtract(MemoryUsage baseline) {
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return new MemoryUsage(
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nativeSharedPages - baseline.nativeSharedPages,
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javaSharedPages - baseline.javaSharedPages,
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otherSharedPages - baseline.otherSharedPages,
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nativePrivatePages - baseline.nativePrivatePages,
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javaPrivatePages - baseline.javaPrivatePages,
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otherPrivatePages - baseline.otherPrivatePages,
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allocCount - baseline.allocCount,
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allocSize - baseline.allocSize,
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freedCount - baseline.freedCount,
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freedSize - baseline.freedSize,
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nativeHeapSize - baseline.nativeHeapSize);
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}
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int javaHeapSize() {
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return allocSize - freedSize;
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}
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int javaPagesInK() {
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return (javaSharedPages + javaPrivatePages) * 4;
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}
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int nativePagesInK() {
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return (nativeSharedPages + nativePrivatePages) * 4;
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}
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int otherPagesInK() {
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return (otherSharedPages + otherPrivatePages) * 4;
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}
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/**
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* Was this information available?
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*/
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boolean isAvailable() {
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return nativeSharedPages != -1;
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}
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/**
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* Measures baseline memory usage.
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*/
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static MemoryUsage baseline() {
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return forClass(null);
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}
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private static final String CLASS_PATH = "-Xbootclasspath"
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+ ":/system/framework/core.jar"
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+ ":/system/framework/ext.jar"
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+ ":/system/framework/framework.jar"
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+ ":/system/framework/framework-tests.jar"
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+ ":/system/framework/services.jar"
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+ ":/system/framework/loadclass.jar";
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private static final String[] GET_DIRTY_PAGES = {
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"adb", "-e", "shell", "dalvikvm", CLASS_PATH, "LoadClass" };
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/**
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* Measures memory usage for the given class.
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*/
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static MemoryUsage forClass(String className) {
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// This is a coarse approximation for determining that no device is connected,
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// or that the communication protocol has changed, but we'll keep going and stop whining.
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if (errorCount >= MAXIMUM_ERRORS) {
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return NOT_AVAILABLE;
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}
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MeasureWithTimeout measurer = new MeasureWithTimeout(className);
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new Thread(measurer).start();
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synchronized (measurer) {
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if (measurer.memoryUsage == null) {
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// Wait up to 10s.
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try {
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measurer.wait(30000);
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} catch (InterruptedException e) {
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System.err.println("Interrupted waiting for measurement.");
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e.printStackTrace();
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return NOT_AVAILABLE;
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}
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// If it's still null.
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if (measurer.memoryUsage == null) {
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System.err.println("Timed out while measuring "
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+ className + ".");
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return NOT_AVAILABLE;
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}
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}
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System.err.println("Got memory usage for " + className + ".");
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return measurer.memoryUsage;
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}
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}
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static class MeasureWithTimeout implements Runnable {
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final String className;
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MemoryUsage memoryUsage = null;
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MeasureWithTimeout(String className) {
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this.className = className;
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}
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public void run() {
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MemoryUsage measured = measure();
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synchronized (this) {
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memoryUsage = measured;
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notifyAll();
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}
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}
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private MemoryUsage measure() {
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String[] commands = GET_DIRTY_PAGES;
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if (className != null) {
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List<String> commandList = new ArrayList<String>(
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GET_DIRTY_PAGES.length + 1);
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commandList.addAll(Arrays.asList(commands));
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commandList.add(className);
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commands = commandList.toArray(new String[commandList.size()]);
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}
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try {
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final Process process = Runtime.getRuntime().exec(commands);
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final InputStream err = process.getErrorStream();
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// Send error output to stderr.
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Thread errThread = new Thread() {
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@Override
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public void run() {
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copy(err, System.err);
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}
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};
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errThread.setDaemon(true);
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errThread.start();
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BufferedReader in = new BufferedReader(
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new InputStreamReader(process.getInputStream()));
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String line = in.readLine();
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if (line == null || !line.startsWith("DECAFBAD,")) {
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System.err.println("Got bad response for " + className
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+ ": " + line);
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errorCount += 1;
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return NOT_AVAILABLE;
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}
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in.close();
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err.close();
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process.destroy();
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return new MemoryUsage(line);
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} catch (IOException e) {
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System.err.println("Error getting stats for "
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+ className + ".");
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e.printStackTrace();
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return NOT_AVAILABLE;
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}
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}
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}
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/**
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* Copies from one stream to another.
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*/
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private static void copy(InputStream in, OutputStream out) {
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byte[] buffer = new byte[1024];
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int read;
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try {
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while ((read = in.read(buffer)) > -1) {
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out.write(buffer, 0, read);
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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