--- /dev/null 2019-02-07 20:54:51.336000000 +0300 +++ new/test/lib/jdk/test/lib/dcmd/FileJcmdExecutor.java 2019-02-08 18:34:04.155093402 +0300 @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2015, 2016, 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.test.lib.dcmd; + +import java.io.File; +import java.io.IOException; +import java.io.PrintWriter; +import java.util.Arrays; +import java.util.List; + +/** + * Executes Diagnostic Commands on the target VM (specified by pid) using the jcmd tool and its ability to read + * Diagnostic Commands from a file. + */ +public class FileJcmdExecutor extends PidJcmdExecutor { + + /** + * Instantiates a new FileJcmdExecutor targeting the current VM + */ + public FileJcmdExecutor() { + super(); + } + + /** + * Instantiates a new FileJcmdExecutor targeting the VM indicated by the given pid + * + * @param target Pid of the target VM + */ + public FileJcmdExecutor(String target) { + super(target); + } + + protected List createCommandLine(String cmd) throws CommandExecutorException { + File cmdFile = createTempFile(); + writeCommandToTemporaryFile(cmd, cmdFile); + + return Arrays.asList(jcmdBinary, Long.toString(pid), + "-f", cmdFile.getAbsolutePath()); + } + + private void writeCommandToTemporaryFile(String cmd, File cmdFile) { + try (PrintWriter pw = new PrintWriter(cmdFile)) { + pw.println(cmd); + } catch (IOException e) { + String message = "Could not write to file: " + cmdFile.getAbsolutePath(); + throw new CommandExecutorException(message, e); + } + } + + private File createTempFile() { + try { + File cmdFile = File.createTempFile("input", "jcmd"); + cmdFile.deleteOnExit(); + return cmdFile; + } catch (IOException e) { + throw new CommandExecutorException("Could not create temporary file", e); + } + } + +}