Mercurial > hg > truffle
view visualizer/Data/src/com/sun/hotspot/igv/data/Event.java @ 11902:67a1e27a8dbb
PTX initial float and double
author | Morris Meyer <morris.meyer@oracle.com> |
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date | Sun, 06 Oct 2013 22:07:23 -0400 |
parents | 015fb895586b |
children |
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/* * Copyright (c) 2008, 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 com.sun.hotspot.igv.data; import java.util.ArrayList; import java.util.List; /** * * @author Thomas Wuerthinger */ public abstract class Event<L> { private List<L> listener; private boolean fireEvents; private boolean eventWasFired; public Event() { listener = new ArrayList<>(); fireEvents = true; } public void addListener(L l) { listener.add(l); } public void addListenerAndFire(L l) { addListener(l); fire(l); } /** * Remove listener * @param l */ public void removeListener(final L l) { listener.remove(l); } public void fire() { if(fireEvents) { List<L> tmpList = new ArrayList<>(listener); for (L l : tmpList) { fire(l); } } else { eventWasFired = true; } } public void beginAtomic() { assert fireEvents : "endAtomic has to be called before another beginAtomic may be called"; this.fireEvents = false; this.eventWasFired = false; } public void endAtomic() { assert !fireEvents : "beginAtomic has to be called first"; this.fireEvents = true; if(eventWasFired) { fire(); } } protected abstract void fire(L l); }