83 lines
2.9 KiB
Java
83 lines
2.9 KiB
Java
/*
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* Copyright (c) 2002, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4503092 8024883
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* @summary Tests that Windows Selector can use more than 63 channels
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* @run main LotsOfChannels
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* @run main/othervm -Dsun.nio.ch.maxUpdateArraySize=64 LotsOfChannels
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* @author kladko
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*/
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/* @test
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* @requires (os.family == "windows")
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* @run main/othervm -Djava.nio.channels.spi.SelectorProvider=sun.nio.ch.WindowsSelectorProvider LotsOfChannels
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*/
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import java.net.*;
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import java.io.*;
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import java.nio.*;
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import java.nio.channels.*;
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public class LotsOfChannels {
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private final static int PIPES_COUNT = 256;
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private final static int BUF_SIZE = 8192;
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private final static int LOOPS = 10;
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public static void main(String[] argv) throws Exception {
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Pipe[] pipes = new Pipe[PIPES_COUNT];
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Pipe pipe = Pipe.open();
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Pipe.SinkChannel sink = pipe.sink();
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Pipe.SourceChannel source = pipe.source();
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Selector sel = Selector.open();
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source.configureBlocking(false);
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source.register(sel, SelectionKey.OP_READ);
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for (int i = 0; i< PIPES_COUNT; i++ ) {
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pipes[i]= Pipe.open();
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Pipe.SourceChannel sc = pipes[i].source();
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sc.configureBlocking(false);
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sc.register(sel, SelectionKey.OP_READ);
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Pipe.SinkChannel sc2 = pipes[i].sink();
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sc2.configureBlocking(false);
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sc2.register(sel, SelectionKey.OP_WRITE);
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}
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for (int i = 0 ; i < LOOPS; i++ ) {
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sink.write(ByteBuffer.allocate(BUF_SIZE));
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int x = sel.selectNow();
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sel.selectedKeys().clear();
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source.read(ByteBuffer.allocate(BUF_SIZE));
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}
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for (int i = 0; i < PIPES_COUNT; i++ ) {
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pipes[i].sink().close();
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pipes[i].source().close();
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}
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pipe.sink().close();
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pipe.source().close();
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sel.close();
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}
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}
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