/*
 * Copyright 1998-1999 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package com.sun.jdi.event;

import com.sun.jdi.*;

/**
 * Notification of a new running thread in the target VM.
 * The new thread can be the result of a call to
 * <code>{@link java.lang.Thread#start}</code> or the result of
 * attaching a new thread to the VM though JNI. The
 * notification is generated by the new thread some time before
 * its execution starts.
 * Because of this timing, it is possible to receive other events
 * for the thread before this event is received. (Notably,
 * {@link MethodEntryEvent}s and {@link MethodExitEvent}s might occur
 * during thread initialization.)
 * It is also possible for {@link VirtualMachine#allThreads} to return
 * a new started thread before this event is received.
 * <p>
 * Note that this event gives no information
 * about the creation of the thread object which may have happened
 * much earlier, depending on the VM being debugged.
 *
 * @see EventQueue
 * @see VirtualMachine
 * @see ThreadReference
 *
 * @author Robert Field
 * @since  1.3
 */
public interface ThreadStartEvent extends Event {
    /**
     * Returns the thread which has started.
     *
     * @return a {@link ThreadReference} which mirrors the event's thread in
     * the target VM.
     */
    public ThreadReference thread();
}