122 lines
4.3 KiB
Java
122 lines
4.3 KiB
Java
/*
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* Copyright (c) 2013, 2020, 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.
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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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import java.util.Arrays;
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import jdk.test.lib.Utils;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.JDKToolLauncher;
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/**
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* Helper class for starting jcmd process.
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* <pre>
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* - jcmd will send diagnostic requests to the current java process:
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* jcmd pid_to_current_process PerfCounter.print
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* - jcmd will be run without sending request to any JVM
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* jcmd -h
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* </pre>
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*/
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public final class JcmdBase {
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private static ProcessBuilder processBuilder = new ProcessBuilder();
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private JcmdBase() {
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// Private constructor to prevent class instantiation
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}
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/**
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* Sends the diagnostic command request to the current process
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*
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* @see #jcmd(boolean, String[], String[])
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*/
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public final static OutputAnalyzer jcmd(String... jcmdArgs)
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throws Exception {
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return jcmd(true, null, jcmdArgs);
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}
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/**
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* Sends the diagnostic command request to the current process.
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* jcmd will be run with specified {@code vmArgs}.
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*
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* @see #jcmd(boolean, String[], String[])
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*/
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public final static OutputAnalyzer jcmd(String[] vmArgs,
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String[] jcmdArgs) throws Exception {
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return jcmd(true, vmArgs, jcmdArgs);
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}
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/**
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* Runs jcmd without sending request to any JVM
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*
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* @see #jcmd(boolean, String[], String[])
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*/
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public final static OutputAnalyzer jcmdNoPid(String[] vmArgs,
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String[] jcmdArgs) throws Exception {
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return jcmd(false, vmArgs, jcmdArgs);
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}
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/**
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* If {@code requestToCurrentProcess} is {@code true}
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* sends a diagnostic command request to the current process.
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* If {@code requestToCurrentProcess} is {@code false}
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* runs jcmd without sending request to any JVM.
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*
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* @param requestToCurrentProcess
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* Defines if jcmd will send request to the current process
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* @param vmArgs
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* jcmd will be run with VM arguments specified,
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* e.g. -XX:+UsePerfData
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* @param jcmdArgs
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* jcmd will be run with option or command and its arguments
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* specified, e.g. VM.flags
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* @return The output from {@link OutputAnalyzer} object
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* @throws Exception
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*/
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private static final OutputAnalyzer jcmd(boolean requestToCurrentProcess,
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String[] vmArgs, String[] jcmdArgs) throws Exception {
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JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jcmd");
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launcher.addVMArgs(Utils.getTestJavaOpts());
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if (vmArgs != null) {
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for (String vmArg : vmArgs) {
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launcher.addVMArg(vmArg);
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}
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}
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if (requestToCurrentProcess) {
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launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
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}
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if (jcmdArgs != null) {
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for (String toolArg : jcmdArgs) {
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launcher.addToolArg(toolArg);
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}
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}
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processBuilder.command(launcher.getCommand());
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System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
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OutputAnalyzer output = ProcessTools.executeProcess(processBuilder);
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System.out.println(output.getOutput());
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return output;
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}
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}
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