5278N/A * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * Internal class to manage all Timers using one thread. 0N/A * TimerQueue manages a queue of Timers. The Timers are chained 0N/A * together in a linked list sorted by the order in which they will expire. 0N/A * @author Dave Moore 0N/A * @author Igor Kushnirskiy 0N/A /* Lock object used in place of class object for synchronization. 0N/A /** Base of nanosecond timings, to avoid wrapping */ 0N/A * Constructor for TimerQueue. 0N/A // Now start the TimerQueue thread. 0N/A // If the Timer is already in the queue, then ignore the add. 0N/A * Timer is not removed after we get it from 0N/A * the queue and before the lock on the timer is 5278N/A // Allow run other threads on systems without kernel threads 1079N/A // Shouldn't ignore InterruptedExceptions here, so AppContext 1079N/A // is disposed gracefully, see 6799345 for details 597N/A // Mark all the timers we contain as not being queued. 0N/A * Returns nanosecond time offset by origin 0N/A // most of it copied from 0N/A // java.util.concurrent.ScheduledThreadPoolExecutor 0N/A * Sequence number to break scheduling ties, and in turn to 0N/A * guarantee FIFO order among tied entries. 0N/A /** Sequence number to break ties FIFO */ 0N/A /** The time the task is enabled to execute in nanoTime units */ 0N/A if (
other ==
this) {
// compare zero ONLY if same object 0N/A return (d ==
0) ?
0 : ((d <
0) ? -
1 :
1);