}
public void execute(Project project) throws BuildException{
final String classname = javaCommand.getExecutable();
AntClassLoader loader = null;
try {
if (sysProperties != null) {
sysProperties.setSystem();
}
final Class[] param = { Class.forName("[Ljava.lang.String;") };
Class target = null;
if (classpath == null) {
target = Class.forName(classname);
} else {
loader = new AntClassLoader(project.getCoreLoader(), project,
classpath, false);
loader.setIsolated(true);
loader.setThreadContextLoader();
target = loader.forceLoadClass(classname);
AntClassLoader.initializeClass(target);
}
main = target.getMethod("main", param);
if (main == null) {
throw new BuildException("Could not find main() method in "
+ classname);
}
if (timeout == null) {
run();
} else {
thread = new Thread(this, "ExecuteJava");
Task currentThreadTask
= project.getThreadTask(Thread.currentThread());
project.registerThreadTask(thread, currentThreadTask);
// if we run into a timout, the run-away thread shall not
// make the VM run forever - if no timeout occurs, Ant's
// main thread will still be there to let the new thread
// finish
thread.setDaemon(true);
Watchdog w = new Watchdog(timeout.longValue());
w.addTimeoutObserver(this);
synchronized (this) {
thread.start();
w.start();
try {
wait();
} catch (InterruptedException e) {}
if (timedOut) {
project.log("Timeout: sub-process interrupted",
Project.MSG_WARN);
} else {
thread = null;
w.stop();
}
}
}
if (caught != null) {
throw caught;
}
} catch (ClassNotFoundException e) {
throw new BuildException("Could not find " + classname + "."
+ " Make sure you have it in your"
+ " classpath");
} catch (SecurityException e) {
throw e;
} catch (Throwable e) {
throw new BuildException(e);
} finally {
if (loader != null) {
loader.resetThreadContextLoader();
loader.cleanup();
}
if (sysProperties != null) {
sysProperties.restoreSystem();
}
}