[77] | 1 | package com.framsticks.util; |
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| 2 | |
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| 3 | import org.apache.log4j.Logger; |
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| 4 | |
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| 5 | import java.util.Iterator; |
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| 6 | import java.util.LinkedList; |
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| 7 | import java.util.ListIterator; |
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| 8 | import java.util.Queue; |
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| 9 | |
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| 10 | /** |
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| 11 | * @author Piotr Sniegowski |
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| 12 | */ |
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| 13 | public class Thread implements Dispatcher { |
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| 14 | |
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| 15 | private static final Logger LOGGER = Logger.getLogger(Thread.class.getName()); |
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| 16 | |
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| 17 | protected final java.lang.Thread thread; |
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| 18 | |
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| 19 | private final LinkedList<Task> queue = new LinkedList<Task>(); |
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| 20 | |
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| 21 | public Thread() { |
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| 22 | thread = new java.lang.Thread(new Runnable() { |
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| 23 | @Override |
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| 24 | public void run() { |
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| 25 | Thread.this.routine(); |
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| 26 | } |
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| 27 | }); |
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| 28 | } |
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| 29 | public Thread(String s) { |
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| 30 | this(); |
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| 31 | thread.setName(s); |
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| 32 | thread.start(); |
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| 33 | } |
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| 34 | |
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| 35 | public Thread(String s, java.lang.Thread thread) { |
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| 36 | this.thread = thread; |
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| 37 | thread.setName(s); |
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| 38 | } |
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| 39 | |
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| 40 | @Override |
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| 41 | public final boolean isActive() { |
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| 42 | return thread.equals(java.lang.Thread.currentThread()); |
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| 43 | } |
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| 44 | |
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| 45 | protected void routine() { |
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| 46 | while (!java.lang.Thread.interrupted()) { |
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| 47 | Task task; |
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| 48 | synchronized (queue) { |
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| 49 | if (queue.isEmpty()) { |
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| 50 | try { |
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| 51 | queue.wait(); |
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| 52 | } catch (InterruptedException ignored) { |
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| 53 | break; |
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| 54 | } |
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| 55 | continue; |
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| 56 | } |
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| 57 | task = queue.peekFirst(); |
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| 58 | assert task != null; |
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| 59 | if (task.moment > System.currentTimeMillis()) { |
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| 60 | try { |
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| 61 | queue.wait(task.moment - System.currentTimeMillis()); |
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| 62 | } catch (InterruptedException ignored) { |
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| 63 | continue; |
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| 64 | } |
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| 65 | continue; |
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| 66 | } |
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| 67 | queue.pollFirst(); |
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| 68 | } |
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| 69 | try { |
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| 70 | task.run(); |
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| 71 | } catch (Exception e) { |
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| 72 | LOGGER.error("error in thread: " + e); |
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| 73 | e.printStackTrace(); |
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| 74 | } |
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| 75 | } |
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| 76 | } |
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| 77 | |
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| 78 | protected void enqueueTask(Task task) { |
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| 79 | synchronized (queue) { |
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| 80 | ListIterator<Task> i = queue.listIterator(); |
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| 81 | while (i.hasNext()) { |
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| 82 | Task t = i.next(); |
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| 83 | if (t.getMoment() > task.getMoment()) { |
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| 84 | i.previous(); |
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| 85 | i.add(task); |
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| 86 | task = null; |
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| 87 | break; |
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| 88 | } |
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| 89 | } |
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| 90 | if (task != null) { |
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| 91 | queue.add(task); |
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| 92 | } |
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| 93 | |
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| 94 | /* |
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| 95 | Iterator<Task> j = queue.iterator(); |
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| 96 | Task prev = null; |
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| 97 | while (j.hasNext()) { |
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| 98 | Task next = j.next(); |
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| 99 | assert (prev == null) || prev.getMoment() <= next.getMoment(); |
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| 100 | prev = next; |
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| 101 | } |
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| 102 | */ |
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| 103 | queue.notify(); |
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| 104 | } |
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| 105 | } |
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| 106 | |
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| 107 | @Override |
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| 108 | public void invokeLater(final Runnable runnable) { |
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| 109 | if (!(runnable instanceof Task)) { |
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| 110 | enqueueTask(new Task() { |
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| 111 | @Override |
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| 112 | public void run() { |
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| 113 | runnable.run(); |
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| 114 | } |
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| 115 | }); |
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| 116 | return; |
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| 117 | } |
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| 118 | enqueueTask((Task)runnable); |
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| 119 | } |
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| 120 | |
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| 121 | public void interrupt() { |
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| 122 | thread.interrupt(); |
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| 123 | } |
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| 124 | |
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| 125 | public void join() throws InterruptedException { |
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| 126 | thread.join(); |
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| 127 | } |
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| 128 | |
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| 129 | public void start() { |
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| 130 | thread.start(); |
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| 131 | } |
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| 132 | |
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| 133 | public void setName(String name) { |
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| 134 | thread.setName(name); |
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| 135 | |
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| 136 | } |
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| 137 | } |
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