| /******************************************************************************* |
| * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Marc R. Hoffmann - initial API and implementation |
| * |
| *******************************************************************************/ |
| package org.jacoco.agent.rt.internal; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.nio.channels.FileChannel; |
| import java.nio.ByteBuffer; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.jacoco.core.data.ExecutionData; |
| import org.jacoco.core.data.ExecutionDataWriter; |
| import org.jacoco.core.data.ExecutionDataDelegate; |
| import org.jacoco.core.data.IExecutionData; |
| import org.jacoco.core.data.ExecutionDataStore; |
| import org.jacoco.core.data.MappedExecutionData; |
| import org.jacoco.core.runtime.AgentOptions; |
| import org.jacoco.core.runtime.RuntimeData; |
| |
| /** |
| * The API for classes instrumented in "offline" mode. The agent configuration |
| * is provided through system properties prefixed with <code>jacoco.</code>. |
| */ |
| public final class Offline { |
| |
| // BEGIN android-change |
| // private static final RuntimeData DATA; |
| private static final Map<Long, ExecutionDataDelegate> DATA = new HashMap<Long, ExecutionDataDelegate>(); |
| private static FileChannel CHANNEL; |
| // END android-change |
| private static final String CONFIG_RESOURCE = "/jacoco-agent.properties"; |
| |
| // BEGIN android-change |
| // static { |
| // final Properties config = ConfigLoader.load(CONFIG_RESOURCE, |
| // System.getProperties()); |
| // DATA = Agent.getInstance(new AgentOptions(config)).getData(); |
| // } |
| // END android-change |
| |
| private Offline() { |
| // no instances |
| } |
| |
| // BEGIN android-change |
| /** |
| * API for offline instrumented classes. |
| * |
| * @param classid |
| * class identifier |
| * @param classname |
| * VM class name |
| * @param probecount |
| * probe count for this class |
| * @return IExecutionData instance for this class |
| */ |
| public static IExecutionData getExecutionData(final long classid, |
| final String classname, final int probecount) { |
| // return DATA.getExecutionData(Long.valueOf(classid), classname, |
| // probecount).getProbes(); |
| synchronized (DATA) { |
| ExecutionDataDelegate entry = DATA.get(classid); |
| if (entry == null) { |
| entry = new ExecutionDataDelegate( |
| classid, classname, probecount, CHANNEL); |
| DATA.put(classid, entry); |
| } else { |
| entry.assertCompatibility(classid, classname, probecount); |
| } |
| return entry; |
| } |
| } |
| |
| /** |
| * Enables memory-mapped execution data and converts existing |
| * {@link ExecutionDataDelegate}s. |
| */ |
| public static void enableMemoryMappedData() { |
| try { |
| prepareFile(getPid()); |
| for (ExecutionDataDelegate data : DATA.values()) { |
| data.convert(CHANNEL); |
| } |
| } catch (IOException e) { |
| // TODO(olivernguyen): Add logging to debug issues more easily. |
| } |
| } |
| |
| /** |
| * Creates the output file that will be mapped for probe data. |
| */ |
| private static void prepareFile(int pid) throws IOException { |
| // Write header information to the file. |
| ByteBuffer headerBuffer = ByteBuffer.allocate(5); |
| headerBuffer.put(ExecutionDataWriter.BLOCK_HEADER); |
| headerBuffer.putChar(ExecutionDataWriter.MAGIC_NUMBER); |
| headerBuffer.putChar(ExecutionDataWriter.FORMAT_VERSION); |
| headerBuffer.flip(); |
| |
| // If this file already exists (due to pid re-usage), the previous coverage data |
| // will be lost when the file is overwritten. |
| File outputFile = new File("/data/misc/trace/jacoco-" + pid + ".mm.ec"); |
| CHANNEL = new RandomAccessFile(outputFile, "rw").getChannel(); |
| synchronized (CHANNEL) { |
| CHANNEL.write(headerBuffer); |
| } |
| } |
| |
| /** |
| * Helper function to determine the pid of this process. |
| */ |
| private static int getPid() throws IOException { |
| // Read /proc/self and resolve it to obtain its pid. |
| return Integer.parseInt(new File("/proc/self").getCanonicalFile().getName()); |
| } |
| // END android-change |
| |
| /** |
| * Creates a default agent, using config loaded from the classpath resource and the system |
| * properties, and a runtime data instance populated with the execution data accumulated by |
| * the probes up until this call is made (subsequent probe updates will not be reflected in |
| * this agent). |
| * |
| * @return the new agent |
| */ |
| static Agent createAgent() { |
| final Properties config = ConfigLoader.load(CONFIG_RESOURCE, |
| System.getProperties()); |
| synchronized (DATA) { |
| ExecutionDataStore store = new ExecutionDataStore(); |
| for (IExecutionData data : DATA.values()) { |
| store.put(data); |
| } |
| return Agent.getInstance(new AgentOptions(config), new RuntimeData(store)); |
| } |
| } |
| // END android-change |
| } |