| /* |
| * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.oracle.java.testlibrary; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.RuntimeMXBean; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import sun.management.VMManagement; |
| |
| public final class ProcessTools { |
| |
| private ProcessTools() { |
| } |
| |
| /** |
| * Pumps stdout and stderr from running the process into a String. |
| * |
| * @param processHandler ProcessHandler to run. |
| * @return Output from process. |
| * @throws IOException If an I/O error occurs. |
| */ |
| public static OutputBuffer getOutput(ProcessBuilder processBuilder) throws IOException { |
| return getOutput(processBuilder.start()); |
| } |
| |
| /** |
| * Pumps stdout and stderr the running process into a String. |
| * |
| * @param process Process to pump. |
| * @return Output from process. |
| * @throws IOException If an I/O error occurs. |
| */ |
| public static OutputBuffer getOutput(Process process) throws IOException { |
| ByteArrayOutputStream stderrBuffer = new ByteArrayOutputStream(); |
| ByteArrayOutputStream stdoutBuffer = new ByteArrayOutputStream(); |
| StreamPumper outPumper = new StreamPumper(process.getInputStream(), stdoutBuffer); |
| StreamPumper errPumper = new StreamPumper(process.getErrorStream(), stderrBuffer); |
| Thread outPumperThread = new Thread(outPumper); |
| Thread errPumperThread = new Thread(errPumper); |
| |
| outPumperThread.setDaemon(true); |
| errPumperThread.setDaemon(true); |
| |
| outPumperThread.start(); |
| errPumperThread.start(); |
| |
| try { |
| process.waitFor(); |
| outPumperThread.join(); |
| errPumperThread.join(); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| return null; |
| } |
| |
| return new OutputBuffer(stdoutBuffer.toString(), stderrBuffer.toString()); |
| } |
| |
| /** |
| * Get the process id of the current running Java process |
| * |
| * @return Process id |
| */ |
| public static int getProcessId() throws Exception { |
| |
| // Get the current process id using a reflection hack |
| RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean(); |
| Field jvm = runtime.getClass().getDeclaredField("jvm"); |
| |
| jvm.setAccessible(true); |
| VMManagement mgmt = (sun.management.VMManagement) jvm.get(runtime); |
| |
| Method pid_method = mgmt.getClass().getDeclaredMethod("getProcessId"); |
| |
| pid_method.setAccessible(true); |
| |
| int pid = (Integer) pid_method.invoke(mgmt); |
| |
| return pid; |
| } |
| |
| /** |
| * Get the string containing input arguments passed to the VM |
| * |
| * @return arguments |
| */ |
| public static String getVmInputArguments() { |
| RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean(); |
| |
| List<String> args = runtime.getInputArguments(); |
| StringBuilder result = new StringBuilder(); |
| for (String arg : args) |
| result.append(arg).append(' '); |
| |
| return result.toString(); |
| } |
| |
| /** |
| * Get platform specific VM arguments (e.g. -d64 on 64bit Solaris) |
| * |
| * @return String[] with platform specific arguments, empty if there are none |
| */ |
| public static String[] getPlatformSpecificVMArgs() { |
| |
| if (Platform.is64bit() && Platform.isSolaris()) { |
| return new String[] { "-d64" }; |
| } |
| |
| return new String[] {}; |
| } |
| |
| /** |
| * Create ProcessBuilder using the java launcher from the jdk to be tested and |
| * with any platform specific arguments prepended |
| */ |
| public static ProcessBuilder createJavaProcessBuilder(String... command) throws Exception { |
| String javapath = JDKToolFinder.getJDKTool("java"); |
| |
| ArrayList<String> args = new ArrayList<>(); |
| args.add(javapath); |
| Collections.addAll(args, getPlatformSpecificVMArgs()); |
| Collections.addAll(args, command); |
| |
| // Reporting |
| StringBuilder cmdLine = new StringBuilder(); |
| for (String cmd : args) |
| cmdLine.append(cmd).append(' '); |
| System.out.println("Command line: [" + cmdLine.toString() + "]"); |
| |
| return new ProcessBuilder(args.toArray(new String[args.size()])); |
| } |
| |
| } |