Package java.nio.channels

Examples of java.nio.channels.Selector.selectedKeys()

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        assertEquals(0,key.readyOps());

        // try selecting and assert nothing selected
        int selected = selector.selectNow();
        assertEquals(0,selected);
        assertEquals(0,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertFalse(key.isReadable());
        assertEquals(0,key.readyOps());

        // Write a byte from server to client
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        server.getOutputStream().flush();

        // select again and assert selection found for read
        selected = selector.select(1000);
        assertEquals(1,selected);
        assertEquals(1,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());

        // select again and see that it is not reselect, but stays selected
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        assertEquals(1,key.readyOps());

        // select again and see that it is not reselect, but stays selected
        selected = selector.select(100);
        assertEquals(0,selected);
        assertEquals(1,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());

        // read the byte
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        assertEquals(1,key.readyOps());

        // Even if we select again ?
        selected = selector.select(100);
        assertEquals(0,selected);
        assertEquals(1,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());

        // Unless we remove the key from the select set
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        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());

        // Unless we remove the key from the select set
        // and then it is still flagged as isReadable()
        selector.selectedKeys().clear();
        assertEquals(0,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());
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        assertEquals(1,key.readyOps());

        // Unless we remove the key from the select set
        // and then it is still flagged as isReadable()
        selector.selectedKeys().clear();
        assertEquals(0,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());

        // Now if we select again - it is still flagged as readable!!!
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        assertEquals(1,key.readyOps());

        // Now if we select again - it is still flagged as readable!!!
        selected = selector.select(100);
        assertEquals(0,selected);
        assertEquals(0,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isReadable());
        assertEquals(1,key.readyOps());

        // Only when it is selected for something else does that state change.
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        {
            Selector selector = _selector;
            return String.format("%s keys=%d selected=%d",
                    super.toString(),
                    selector != null && selector.isOpen() ? selector.keys().size() : -1,
                    selector != null && selector.isOpen() ? selector.selectedKeys().size() : -1);
        }

        private class DumpKeys implements Runnable
        {
            private final CountDownLatch latch = new CountDownLatch(1);
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        // Only when it is selected for something else does that state change.
        key.interestOps(SelectionKey.OP_READ|SelectionKey.OP_WRITE);
        selected = selector.select(1000);
        assertEquals(1,selected);
        assertEquals(1,selector.selectedKeys().size());
        assertTrue(key.isValid());
        assertTrue(key.isWritable());
        assertFalse(key.isReadable());
        assertEquals(SelectionKey.OP_WRITE,key.readyOps());
    }
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      log.info("readyCount={}", readyCount);

      final long timeDiff = timeFinish - timeStart;
      log.info("timeDiff={}", timeDiff);

      final Set<SelectionKey> selectedKeySet = selector.selectedKeys();
      logSet(selectedKeySet);

      for (final SelectionKey key : selectedKeySet) {
        if (key.isWritable()) {
          log.info("isWritable");
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