| /* |
| * Copyright (c) 2013, 2015, 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 jdk.testlibrary; |
| |
| import java.util.Arrays; |
| |
| /** |
| * Helper class for starting jcmd process. |
| * <pre> |
| * - jcmd will send diagnostic requests to the current java process: |
| * jcmd pid_to_current_process PerfCounter.print |
| * - jcmd will be run without sending request to any JVM |
| * jcmd -h |
| * </pre> |
| */ |
| public final class JcmdBase { |
| |
| private static ProcessBuilder processBuilder = new ProcessBuilder(); |
| |
| private JcmdBase() { |
| // Private constructor to prevent class instantiation |
| } |
| |
| /** |
| * Sends the diagnostic command request to the current process |
| * |
| * @see #jcmd(boolean, String[], String[]) |
| */ |
| public final static OutputAnalyzer jcmd(String... jcmdArgs) |
| throws Exception { |
| return jcmd(true, null, jcmdArgs); |
| } |
| |
| /** |
| * Sends the diagnostic command request to the current process. |
| * jcmd will be run with specified {@code vmArgs}. |
| * |
| * @see #jcmd(boolean, String[], String[]) |
| */ |
| public final static OutputAnalyzer jcmd(String[] vmArgs, |
| String[] jcmdArgs) throws Exception { |
| return jcmd(true, vmArgs, jcmdArgs); |
| } |
| |
| /** |
| * Runs jcmd without sending request to any JVM |
| * |
| * @see #jcmd(boolean, String[], String[]) |
| */ |
| public final static OutputAnalyzer jcmdNoPid(String[] vmArgs, |
| String[] jcmdArgs) throws Exception { |
| return jcmd(false, vmArgs, jcmdArgs); |
| } |
| |
| /** |
| * If {@code requestToCurrentProcess} is {@code true} |
| * sends a diagnostic command request to the current process. |
| * If {@code requestToCurrentProcess} is {@code false} |
| * runs jcmd without sending request to any JVM. |
| * |
| * @param requestToCurrentProcess |
| * Defines if jcmd will send request to the current process |
| * @param vmArgs |
| * jcmd will be run with VM arguments specified, |
| * e.g. -XX:+UsePerfData |
| * @param jcmdArgs |
| * jcmd will be run with option or command and its arguments |
| * specified, e.g. VM.flags |
| * @return The output from {@link OutputAnalyzer} object |
| * @throws Exception |
| */ |
| private static final OutputAnalyzer jcmd(boolean requestToCurrentProcess, |
| String[] vmArgs, String[] jcmdArgs) throws Exception { |
| JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jcmd"); |
| if (vmArgs != null) { |
| for (String vmArg : vmArgs) { |
| launcher.addVMArg(vmArg); |
| } |
| } |
| if (requestToCurrentProcess) { |
| launcher.addToolArg(Long.toString(ProcessTools.getProcessId())); |
| } |
| if (jcmdArgs != null) { |
| for (String toolArg : jcmdArgs) { |
| launcher.addToolArg(toolArg); |
| } |
| } |
| processBuilder.command(launcher.getCommand()); |
| System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", "")); |
| OutputAnalyzer output = ProcessTools.executeProcess(processBuilder); |
| System.out.println(output.getOutput()); |
| |
| return output; |
| } |
| |
| } |