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A programmable, embedded web browser driver compatible with the Selenium WebDriver spec -- fast, headless, WebKit-based, 100% pure Java, and no browser dependencies
/*
* Copyright (c) 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 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.machinepublishers.glass.ui.monocle;
import java.util.Arrays;
class RunnableQueue {
private Runnable[] queue = new Runnable[32];
private int start;
private int count;
private int modulo(int index) {
if (index >= queue.length) {
index -= queue.length;
}
return index;
}
synchronized void postRunnable(Runnable r) {
if (count == queue.length) {
Runnable[] newQueue = new Runnable[(queue.length * 3) / 2];
System.arraycopy(queue, start, newQueue, 0, queue.length - start);
System.arraycopy(queue, 0, newQueue, queue.length - start, start);
queue = newQueue;
start = 0;
}
queue[modulo(start + count)] = r;
count ++;
notifyAll();
}
synchronized Runnable getNextRunnable() throws InterruptedException {
while (count == 0) {
wait();
}
Runnable r = queue[start];
queue[start] = null;
start = modulo(start + 1);
count --;
return r;
}
synchronized void clear() {
Arrays.fill(queue, null);
count = 0;
}
}
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