/*
* Quasar: lightweight threads and actors for the JVM.
* Copyright (c) 2013-2014, Parallel Universe Software Co. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 3.0
* as published by the Free Software Foundation.
*/
package co.paralleluniverse.fibers;
/**
* An exception used to initiate the control transfer.
* Methods which are declared to throw this exception are "suspendable". This
* exception must always be propagated and never be caught.
* <p/>
* Try/catch handlers are allowed:<br/>
* {@code try{ doSomething(); } catch(Throwable ex) { handleException(ex); } }
* <p/>
* Quasar instrumentation will enhance the bytecode of these methods to
* support suspension and continuation of their execution; they will not catch {@code SuspendExecution}.
* <p/>
* This class is for internal Quasar use.
* Throwing an instance of this class or a subclass of it will break things in strange ways.
*/
public final class SuspendExecution extends Exception { // InterruptedException {
static final SuspendExecution PARK = new SuspendExecution();
static final SuspendExecution YIELD = new SuspendExecution();
protected SuspendExecution() {
super("Oops. Forgot to instrument a method. Run your program with -Dco.paralleluniverse.fibers.verifyInstrumentation=true to catch the culprit!");
}
@Override
public Throwable fillInStackTrace() {
return this;
}
}