test/java/awt/regtesthelpers/process/ProcessCommunicator.java
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*** 1,7 ****
/*
! * Copyright (c) 2007, 2010, 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.
--- 1,7 ----
/*
! * Copyright (c) 2007, 2014, 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.
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package test.java.awt.regtesthelpers.process;
import java.io.*;
! /** This class is created to solve interprocess communication problems.
* When you need to write a regression test which should verify inter jvm
* behavior such as DnD data transfer, Clipboard data transfer, focus
* transfer etc., you could use the next scenario:
*
* 1. Write an implementation for the parent JVM, using applet test.
! * 2. Write an implimentation for the child JVM or native application, using
* main() function.
* 3. Execute child process using ProcessCommunicator.executeChildProcess()
* method.
! * 4. You can decide whetherthe test is passed on the basis of
* ProcessResults class data.
*
! * Note: The class is not thread safe. You should access its methods only from the same
! * thread.
*/
public class ProcessCommunicator {
private static final String javaHome = System.getProperty("java.home", "");
private static final String javaPath = javaHome + File.separator + "bin" +
File.separator + "java ";
private static String command = "";
private ProcessCommunicator() {}
! /** The same as {#link #executeChildProcess(Class,String)} except
* the {@code classPathArgument} parameter. The class path
* parameter is for the debug purposes
*
* @param classToExecute is passed to the child JVM
* @param classPathArguments class path for the child JVM
--- 23,62 ----
package test.java.awt.regtesthelpers.process;
import java.io.*;
! /**
! * This class is created to solve interprocess communication problems.
* When you need to write a regression test which should verify inter jvm
* behavior such as DnD data transfer, Clipboard data transfer, focus
* transfer etc., you could use the next scenario:
*
* 1. Write an implementation for the parent JVM, using applet test.
! * 2. Write an implementation for the child JVM or native application, using
* main() function.
* 3. Execute child process using ProcessCommunicator.executeChildProcess()
* method.
! * 4. You can decide whether the test is passed on the basis of
* ProcessResults class data.
*
! * Note: The class is not thread safe. You should access its methods only from
! * the same thread.
*/
public class ProcessCommunicator {
private static final String javaHome = System.getProperty("java.home", "");
private static final String javaPath = javaHome + File.separator + "bin" +
File.separator + "java ";
private static String command = "";
+ private static volatile Process process;
private ProcessCommunicator() {}
! /**
! * The same as {#link #executeChildProcess(Class,String)} except
* the {@code classPathArgument} parameter. The class path
* parameter is for the debug purposes
*
* @param classToExecute is passed to the child JVM
* @param classPathArguments class path for the child JVM
*** 63,80 ****
public static ProcessResults executeChildProcess(final Class classToExecute,
final String classPathArguments, final String [] args)
{
try {
String command = buildCommand(classToExecute, classPathArguments, args);
! Process process = Runtime.getRuntime().exec(command);
return doWaitFor(process);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
! /** Executes child {code Process}
*
* @param classToExecute class to be executed as a child java process
* @param args args to be passed in to the child process
* @return results of the executed {@code Process}
*/
--- 66,84 ----
public static ProcessResults executeChildProcess(final Class classToExecute,
final String classPathArguments, final String [] args)
{
try {
String command = buildCommand(classToExecute, classPathArguments, args);
! process = Runtime.getRuntime().exec(command);
return doWaitFor(process);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
! /**
! * Executes child {code Process}
*
* @param classToExecute class to be executed as a child java process
* @param args args to be passed in to the child process
* @return results of the executed {@code Process}
*/
*** 84,98 ****
return executeChildProcess(classToExecute, System.getProperty("java.class.path"), args);
}
/**
* Waits for a process and return its results.
! * This is a workaround for <code>Process.waitFor()</code> never returning.
*
* @return results of the executed {@code Process}
*/
! private static ProcessResults doWaitFor(final Process p) {
ProcessResults pres = new ProcessResults();
final InputStream in;
final InputStream err;
--- 88,102 ----
return executeChildProcess(classToExecute, System.getProperty("java.class.path"), args);
}
/**
* Waits for a process and return its results.
! * This is a workaround for {@code Process.waitFor()} never returning.
*
* @return results of the executed {@code Process}
*/
! public static ProcessResults doWaitFor(final Process p) {
ProcessResults pres = new ProcessResults();
final InputStream in;
final InputStream err;
*** 131,147 ****
e.printStackTrace();
}
return pres;
}
! /** Builds command on the basis of the passed class name,
* class path and arguments.
*
* @param classToExecute with class will be executed in the new JVM
* @param classPathArguments java class path (only for test purposes)
* @param args arguments for the new application. This could be used
! * to pass some information from the parnent to child JVM.
* @return command to execute the {@code Process}
*/
private static String buildCommand(final Class classToExecute,
final String classPathArguments, final String [] args)
{
--- 135,152 ----
e.printStackTrace();
}
return pres;
}
! /**
! * Builds command on the basis of the passed class name,
* class path and arguments.
*
* @param classToExecute with class will be executed in the new JVM
* @param classPathArguments java class path (only for test purposes)
* @param args arguments for the new application. This could be used
! * to pass some information from the parent to child JVM.
* @return command to execute the {@code Process}
*/
private static String buildCommand(final Class classToExecute,
final String classPathArguments, final String [] args)
{
*** 160,172 ****
}
command = commandBuilder.toString();
return command;
}
! /** Could be used for the debug purposes.
*
* @return command that was build to execute the child process
*/
public static String getExecutionCommand () {
return command;
}
}
--- 165,190 ----
}
command = commandBuilder.toString();
return command;
}
! /**
! * Could be used for the debug purposes.
*
* @return command that was build to execute the child process
*/
public static String getExecutionCommand () {
return command;
}
+
+ /**
+ * Terminates the process created by {@code executeChildProcess} methods.
+ */
+ public static void destroyProcess() {
+ if (process != null) {
+ if (process.isAlive()) {
+ process.destroy();
+ }
+ process = null;
+ }
+ }
}