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/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.jfr.api.consumer.streaming;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.Properties;
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import jdk.internal.misc.Unsafe;
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import jdk.jfr.Event;
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import jdk.test.lib.process.ProcessTools;
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import com.sun.tools.attach.VirtualMachine;
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/**
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* Class that emits a NUMBER_OF_EVENTS and then awaits crash or exit
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*
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* Requires jdk.attach module.
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*
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*/
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public final class TestProcess {
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private static class TestEvent extends Event {
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}
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public final static int NUMBER_OF_EVENTS = 10;
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private final Process process;
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private final Path path;
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public TestProcess(String name) throws IOException {
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this.path = Paths.get("action-" + System.currentTimeMillis()).toAbsolutePath();
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String[] args = {
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"--add-exports",
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"java.base/jdk.internal.misc=ALL-UNNAMED",
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"-XX:StartFlightRecording:settings=none",
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TestProcess.class.getName(), path.toString()
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};
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(false, args);
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process = ProcessTools.startProcess(name, pb);
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}
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public static void main(String... args) throws Exception {
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for (int i = 0; i < NUMBER_OF_EVENTS; i++) {
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TestEvent e = new TestEvent();
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e.commit();
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}
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Path path = Paths.get(args[0]);
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while (true) {
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try {
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String action = Files.readString(path);
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if ("crash".equals(action)) {
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System.out.println("About to crash...");
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Unsafe.getUnsafe().putInt(0L, 0);
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}
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if ("exit".equals(action)) {
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System.out.println("About to exit...");
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System.exit(0);
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}
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} catch (Exception ioe) {
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// Ignore
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}
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takeNap();
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}
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}
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public Path getRepository() {
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while (true) {
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try {
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VirtualMachine vm = VirtualMachine.attach(String.valueOf(process.pid()));
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Properties p = vm.getSystemProperties();
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vm.detach();
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String repo = (String) p.get("jdk.jfr.repository");
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if (repo != null) {
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return Paths.get(repo);
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}
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} catch (Exception e) {
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System.out.println("Attach failed: " + e.getMessage());
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System.out.println("Retrying...");
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}
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takeNap();
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}
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}
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private static void takeNap() {
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try {
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Thread.sleep(10);
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} catch (InterruptedException ie) {
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// ignore
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}
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}
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public void crash() {
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try {
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Files.writeString(path, "crash");
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} catch (IOException ioe) {
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ioe.printStackTrace();
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}
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}
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public void exit() {
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try {
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Files.writeString(path, "exit");
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} catch (IOException ioe) {
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ioe.printStackTrace();
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}
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}
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public long pid() {
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return process.pid();
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}
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}
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