874 lines
30 KiB
Java
874 lines
30 KiB
Java
/*
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* Copyright (c) 2018, 2023, 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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/**
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* @test id=default
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* @bug 8284161
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* @summary Test virtual threads doing blocking I/O on NIO channels
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* @library /test/lib
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* @run junit BlockingChannelOps
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*/
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/**
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* @test id=poller-modes
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* @requires (os.family == "linux") | (os.family == "mac")
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* @library /test/lib
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* @run junit/othervm -Djdk.pollerMode=1 BlockingChannelOps
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* @run junit/othervm -Djdk.pollerMode=2 BlockingChannelOps
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*/
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/**
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* @test id=no-vmcontinuations
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* @requires vm.continuations
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* @library /test/lib
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* @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:-VMContinuations BlockingChannelOps
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*/
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import java.io.Closeable;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.Socket;
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import java.net.SocketAddress;
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import java.net.SocketException;
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import java.nio.ByteBuffer;
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import java.nio.channels.AsynchronousCloseException;
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import java.nio.channels.ClosedByInterruptException;
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import java.nio.channels.ClosedChannelException;
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import java.nio.channels.DatagramChannel;
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import java.nio.channels.Pipe;
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import java.nio.channels.ReadableByteChannel;
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import java.nio.channels.ServerSocketChannel;
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import java.nio.channels.SocketChannel;
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import java.nio.channels.WritableByteChannel;
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import jdk.test.lib.thread.VThreadRunner;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.*;
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class BlockingChannelOps {
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/**
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* SocketChannel read/write, no blocking.
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*/
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@Test
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void testSocketChannelReadWrite1() throws Exception {
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VThreadRunner.run(() -> {
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try (var connection = new Connection()) {
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SocketChannel sc1 = connection.channel1();
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SocketChannel sc2 = connection.channel2();
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// write to sc1
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ByteBuffer bb = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
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int n = sc1.write(bb);
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assertTrue(n > 0);
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// read from sc2 should not block
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bb = ByteBuffer.allocate(10);
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n = sc2.read(bb);
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assertTrue(n > 0);
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assertTrue(bb.get(0) == 'X');
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}
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});
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}
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/**
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* Virtual thread blocks in SocketChannel read.
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*/
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@Test
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void testSocketChannelRead() throws Exception {
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VThreadRunner.run(() -> {
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try (var connection = new Connection()) {
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SocketChannel sc1 = connection.channel1();
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SocketChannel sc2 = connection.channel2();
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// write to sc1 when current thread blocks in sc2.read
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ByteBuffer bb1 = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
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runAfterParkedAsync(() -> sc1.write(bb1));
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// read from sc2 should block
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ByteBuffer bb2 = ByteBuffer.allocate(10);
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int n = sc2.read(bb2);
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assertTrue(n > 0);
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assertTrue(bb2.get(0) == 'X');
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}
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});
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}
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/**
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* Virtual thread blocks in SocketChannel write.
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*/
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@Test
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void testSocketChannelWrite() throws Exception {
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VThreadRunner.run(() -> {
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try (var connection = new Connection()) {
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SocketChannel sc1 = connection.channel1();
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SocketChannel sc2 = connection.channel2();
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// read from sc2 to EOF when current thread blocks in sc1.write
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Thread reader = runAfterParkedAsync(() -> readToEOF(sc2));
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// write to sc1 should block
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ByteBuffer bb = ByteBuffer.allocate(100*1024);
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for (int i=0; i<1000; i++) {
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int n = sc1.write(bb);
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assertTrue(n > 0);
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bb.clear();
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}
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sc1.close();
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// wait for reader to finish
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reader.join();
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}
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});
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}
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/**
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* SocketChannel close while virtual thread blocked in read.
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*/
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@Test
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void testSocketChannelReadAsyncClose() throws Exception {
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VThreadRunner.run(() -> {
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try (var connection = new Connection()) {
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SocketChannel sc = connection.channel1();
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runAfterParkedAsync(sc::close);
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try {
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int n = sc.read(ByteBuffer.allocate(100));
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fail("read returned " + n);
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} catch (AsynchronousCloseException expected) { }
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}
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});
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}
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/**
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* Virtual thread interrupted while blocked in SocketChannel read.
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*/
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@Test
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void testSocketChannelReadInterrupt() throws Exception {
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VThreadRunner.run(() -> {
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try (var connection = new Connection()) {
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SocketChannel sc = connection.channel1();
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// interrupt current thread when it blocks in read
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Thread thisThread = Thread.currentThread();
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runAfterParkedAsync(thisThread::interrupt);
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try {
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int n = sc.read(ByteBuffer.allocate(100));
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fail("read returned " + n);
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} catch (ClosedByInterruptException expected) {
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assertTrue(Thread.interrupted());
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}
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}
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});
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}
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/**
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* SocketChannel close while virtual thread blocked in write.
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*/
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@Test
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void testSocketChannelWriteAsyncClose() throws Exception {
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VThreadRunner.run(() -> {
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boolean retry = true;
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while (retry) {
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try (var connection = new Connection()) {
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SocketChannel sc = connection.channel1();
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// close sc when current thread blocks in write
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runAfterParkedAsync(sc::close);
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try {
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ByteBuffer bb = ByteBuffer.allocate(100*1024);
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for (;;) {
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int n = sc.write(bb);
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assertTrue(n > 0);
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bb.clear();
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}
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} catch (AsynchronousCloseException expected) {
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// closed when blocked in write
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retry = false;
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} catch (ClosedChannelException e) {
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// closed when not blocked in write, need to retry test
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}
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}
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}
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});
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}
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/**
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* Virtual thread interrupted while blocked in SocketChannel write.
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*/
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@Test
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void testSocketChannelWriteInterrupt() throws Exception {
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VThreadRunner.run(() -> {
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boolean retry = true;
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while (retry) {
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try (var connection = new Connection()) {
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SocketChannel sc = connection.channel1();
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// interrupt current thread when it blocks in write
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Thread thisThread = Thread.currentThread();
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runAfterParkedAsync(thisThread::interrupt);
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try {
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ByteBuffer bb = ByteBuffer.allocate(100*1024);
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for (;;) {
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int n = sc.write(bb);
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assertTrue(n > 0);
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bb.clear();
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}
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} catch (ClosedByInterruptException e) {
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// closed when blocked in write
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assertTrue(Thread.interrupted());
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retry = false;
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} catch (ClosedChannelException e) {
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// closed when not blocked in write, need to retry test
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}
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}
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}
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});
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}
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/**
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* Virtual thread blocks in SocketChannel adaptor read.
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*/
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@Test
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void testSocketAdaptorRead1() throws Exception {
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testSocketAdaptorRead(0);
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}
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/**
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* Virtual thread blocks in SocketChannel adaptor read with timeout.
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*/
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@Test
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void testSocketAdaptorRead2() throws Exception {
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testSocketAdaptorRead(60_000);
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}
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private void testSocketAdaptorRead(int timeout) throws Exception {
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VThreadRunner.run(() -> {
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try (var connection = new Connection()) {
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SocketChannel sc1 = connection.channel1();
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SocketChannel sc2 = connection.channel2();
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// write to sc1 when currnet thread blocks reading from sc2
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ByteBuffer bb = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
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runAfterParkedAsync(() -> sc1.write(bb));
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// read from sc2 should block
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byte[] array = new byte[100];
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if (timeout > 0)
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sc2.socket().setSoTimeout(timeout);
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int n = sc2.socket().getInputStream().read(array);
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assertTrue(n > 0);
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assertTrue(array[0] == 'X');
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}
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});
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}
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/**
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* ServerSocketChannel accept, no blocking.
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*/
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@Test
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void testServerSocketChannelAccept1() throws Exception {
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VThreadRunner.run(() -> {
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try (var ssc = ServerSocketChannel.open()) {
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ssc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
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var sc1 = SocketChannel.open(ssc.getLocalAddress());
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// accept should not block
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var sc2 = ssc.accept();
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sc1.close();
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sc2.close();
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}
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});
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}
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/**
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* Virtual thread blocks in ServerSocketChannel accept.
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*/
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@Test
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void testServerSocketChannelAccept2() throws Exception {
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VThreadRunner.run(() -> {
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try (var ssc = ServerSocketChannel.open()) {
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ssc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
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var sc1 = SocketChannel.open();
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// connect when current thread when it blocks in accept
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runAfterParkedAsync(() -> sc1.connect(ssc.getLocalAddress()));
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// accept should block
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var sc2 = ssc.accept();
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sc1.close();
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sc2.close();
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}
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});
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}
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/**
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* SeverSocketChannel close while virtual thread blocked in accept.
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*/
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@Test
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void testServerSocketChannelAcceptAsyncClose() throws Exception {
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VThreadRunner.run(() -> {
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try (var ssc = ServerSocketChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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ssc.bind(new InetSocketAddress(lh, 0));
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runAfterParkedAsync(ssc::close);
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try {
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SocketChannel sc = ssc.accept();
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sc.close();
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fail("connection accepted???");
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} catch (AsynchronousCloseException expected) { }
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}
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});
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}
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/**
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* Virtual thread interrupted while blocked in ServerSocketChannel accept.
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*/
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@Test
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void testServerSocketChannelAcceptInterrupt() throws Exception {
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VThreadRunner.run(() -> {
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try (var ssc = ServerSocketChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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ssc.bind(new InetSocketAddress(lh, 0));
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// interrupt current thread when it blocks in accept
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Thread thisThread = Thread.currentThread();
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runAfterParkedAsync(thisThread::interrupt);
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try {
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SocketChannel sc = ssc.accept();
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sc.close();
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fail("connection accepted???");
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} catch (ClosedByInterruptException expected) {
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assertTrue(Thread.interrupted());
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}
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}
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});
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}
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/**
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* Virtual thread blocks in ServerSocketChannel adaptor accept.
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*/
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@Test
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void testSocketChannelAdaptorAccept1() throws Exception {
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testSocketChannelAdaptorAccept(0);
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}
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/**
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* Virtual thread blocks in ServerSocketChannel adaptor accept with timeout.
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*/
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@Test
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void testSocketChannelAdaptorAccept2() throws Exception {
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testSocketChannelAdaptorAccept(60_000);
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}
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private void testSocketChannelAdaptorAccept(int timeout) throws Exception {
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VThreadRunner.run(() -> {
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try (var ssc = ServerSocketChannel.open()) {
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ssc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
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var sc = SocketChannel.open();
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// interrupt current thread when it blocks in accept
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runAfterParkedAsync(() -> sc.connect(ssc.getLocalAddress()));
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// accept should block
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if (timeout > 0)
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ssc.socket().setSoTimeout(timeout);
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Socket s = ssc.socket().accept();
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sc.close();
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s.close();
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}
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});
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}
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/**
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* DatagramChannel receive/send, no blocking.
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*/
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@Test
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void testDatagramChannelSendReceive1() throws Exception {
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VThreadRunner.run(() -> {
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try (DatagramChannel dc1 = DatagramChannel.open();
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DatagramChannel dc2 = DatagramChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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dc2.bind(new InetSocketAddress(lh, 0));
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// send should not block
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ByteBuffer bb = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
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int n = dc1.send(bb, dc2.getLocalAddress());
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assertTrue(n > 0);
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// receive should not block
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bb = ByteBuffer.allocate(10);
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dc2.receive(bb);
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assertTrue(bb.get(0) == 'X');
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}
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});
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}
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/**
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* Virtual thread blocks in DatagramChannel receive.
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*/
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@Test
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void testDatagramChannelSendReceive2() throws Exception {
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VThreadRunner.run(() -> {
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try (DatagramChannel dc1 = DatagramChannel.open();
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DatagramChannel dc2 = DatagramChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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dc2.bind(new InetSocketAddress(lh, 0));
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// send from dc1 when current thread blocked in dc2.receive
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ByteBuffer bb1 = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
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runAfterParkedAsync(() -> dc1.send(bb1, dc2.getLocalAddress()));
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// read from dc2 should block
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ByteBuffer bb2 = ByteBuffer.allocate(10);
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dc2.receive(bb2);
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assertTrue(bb2.get(0) == 'X');
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}
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});
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}
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/**
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* DatagramChannel close while virtual thread blocked in receive.
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*/
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@Test
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void testDatagramChannelReceiveAsyncClose() throws Exception {
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VThreadRunner.run(() -> {
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try (DatagramChannel dc = DatagramChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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dc.bind(new InetSocketAddress(lh, 0));
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runAfterParkedAsync(dc::close);
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try {
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dc.receive(ByteBuffer.allocate(100));
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fail("receive returned");
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} catch (AsynchronousCloseException expected) { }
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}
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});
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}
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/**
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* Virtual thread interrupted while blocked in DatagramChannel receive.
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*/
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@Test
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void testDatagramChannelReceiveInterrupt() throws Exception {
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VThreadRunner.run(() -> {
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try (DatagramChannel dc = DatagramChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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dc.bind(new InetSocketAddress(lh, 0));
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// interrupt current thread when it blocks in receive
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Thread thisThread = Thread.currentThread();
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runAfterParkedAsync(thisThread::interrupt);
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try {
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dc.receive(ByteBuffer.allocate(100));
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fail("receive returned");
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} catch (ClosedByInterruptException expected) {
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assertTrue(Thread.interrupted());
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}
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}
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});
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}
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/**
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* Virtual thread blocks in DatagramSocket adaptor receive.
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*/
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@Test
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void testDatagramSocketAdaptorReceive1() throws Exception {
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testDatagramSocketAdaptorReceive(0);
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}
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/**
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* Virtual thread blocks in DatagramSocket adaptor receive with timeout.
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*/
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@Test
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void testDatagramSocketAdaptorReceive2() throws Exception {
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testDatagramSocketAdaptorReceive(60_000);
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}
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private void testDatagramSocketAdaptorReceive(int timeout) throws Exception {
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VThreadRunner.run(() -> {
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try (DatagramChannel dc1 = DatagramChannel.open();
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DatagramChannel dc2 = DatagramChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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dc2.bind(new InetSocketAddress(lh, 0));
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// send from dc1 when current thread blocks in dc2 receive
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ByteBuffer bb = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
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runAfterParkedAsync(() -> dc1.send(bb, dc2.getLocalAddress()));
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// receive should block
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byte[] array = new byte[100];
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DatagramPacket p = new DatagramPacket(array, 0, array.length);
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if (timeout > 0)
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dc2.socket().setSoTimeout(timeout);
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dc2.socket().receive(p);
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assertTrue(p.getLength() == 3 && array[0] == 'X');
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}
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});
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}
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/**
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* DatagramChannel close while virtual thread blocked in adaptor receive.
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*/
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@Test
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void testDatagramSocketAdaptorReceiveAsyncClose1() throws Exception {
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testDatagramSocketAdaptorReceiveAsyncClose(0);
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}
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/**
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* DatagramChannel close while virtual thread blocked in adaptor receive
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* with timeout.
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*/
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@Test
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void testDatagramSocketAdaptorReceiveAsyncClose2() throws Exception {
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testDatagramSocketAdaptorReceiveAsyncClose(60_1000);
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}
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private void testDatagramSocketAdaptorReceiveAsyncClose(int timeout) throws Exception {
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VThreadRunner.run(() -> {
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try (DatagramChannel dc = DatagramChannel.open()) {
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InetAddress lh = InetAddress.getLoopbackAddress();
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dc.bind(new InetSocketAddress(lh, 0));
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|
|
byte[] array = new byte[100];
|
|
DatagramPacket p = new DatagramPacket(array, 0, array.length);
|
|
if (timeout > 0)
|
|
dc.socket().setSoTimeout(timeout);
|
|
|
|
// close channel/socket when current thread blocks in receive
|
|
runAfterParkedAsync(dc::close);
|
|
|
|
assertThrows(SocketException.class, () -> dc.socket().receive(p));
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Virtual thread interrupted while blocked in DatagramSocket adaptor receive.
|
|
*/
|
|
@Test
|
|
void testDatagramSocketAdaptorReceiveInterrupt1() throws Exception {
|
|
testDatagramSocketAdaptorReceiveInterrupt(0);
|
|
}
|
|
|
|
/**
|
|
* Virtual thread interrupted while blocked in DatagramSocket adaptor receive
|
|
* with timeout.
|
|
*/
|
|
@Test
|
|
void testDatagramSocketAdaptorReceiveInterrupt2() throws Exception {
|
|
testDatagramSocketAdaptorReceiveInterrupt(60_1000);
|
|
}
|
|
|
|
private void testDatagramSocketAdaptorReceiveInterrupt(int timeout) throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
try (DatagramChannel dc = DatagramChannel.open()) {
|
|
InetAddress lh = InetAddress.getLoopbackAddress();
|
|
dc.bind(new InetSocketAddress(lh, 0));
|
|
|
|
byte[] array = new byte[100];
|
|
DatagramPacket p = new DatagramPacket(array, 0, array.length);
|
|
if (timeout > 0)
|
|
dc.socket().setSoTimeout(timeout);
|
|
|
|
// interrupt current thread when it blocks in receive
|
|
Thread thisThread = Thread.currentThread();
|
|
runAfterParkedAsync(thisThread::interrupt);
|
|
|
|
try {
|
|
dc.socket().receive(p);
|
|
fail();
|
|
} catch (ClosedByInterruptException expected) {
|
|
assertTrue(Thread.interrupted());
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Pipe read/write, no blocking.
|
|
*/
|
|
@Test
|
|
void testPipeReadWrite1() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
|
|
// write should not block
|
|
ByteBuffer bb = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
|
|
int n = sink.write(bb);
|
|
assertTrue(n > 0);
|
|
|
|
// read should not block
|
|
bb = ByteBuffer.allocate(10);
|
|
n = source.read(bb);
|
|
assertTrue(n > 0);
|
|
assertTrue(bb.get(0) == 'X');
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Virtual thread blocks in Pipe.SourceChannel read.
|
|
*/
|
|
@Test
|
|
void testPipeReadWrite2() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
|
|
// write from sink when current thread blocks reading from source
|
|
ByteBuffer bb1 = ByteBuffer.wrap("XXX".getBytes("UTF-8"));
|
|
runAfterParkedAsync(() -> sink.write(bb1));
|
|
|
|
// read should block
|
|
ByteBuffer bb2 = ByteBuffer.allocate(10);
|
|
int n = source.read(bb2);
|
|
assertTrue(n > 0);
|
|
assertTrue(bb2.get(0) == 'X');
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Virtual thread blocks in Pipe.SinkChannel write.
|
|
*/
|
|
@Test
|
|
void testPipeReadWrite3() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
|
|
// read from source to EOF when current thread blocking in write
|
|
Thread reader = runAfterParkedAsync(() -> readToEOF(source));
|
|
|
|
// write to sink should block
|
|
ByteBuffer bb = ByteBuffer.allocate(100*1024);
|
|
for (int i=0; i<1000; i++) {
|
|
int n = sink.write(bb);
|
|
assertTrue(n > 0);
|
|
bb.clear();
|
|
}
|
|
sink.close();
|
|
|
|
// wait for reader to finish
|
|
reader.join();
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Pipe.SourceChannel close while virtual thread blocked in read.
|
|
*/
|
|
@Test
|
|
void testPipeReadAsyncClose() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
runAfterParkedAsync(source::close);
|
|
try {
|
|
int n = source.read(ByteBuffer.allocate(100));
|
|
fail("read returned " + n);
|
|
} catch (AsynchronousCloseException expected) { }
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Virtual thread interrupted while blocked in Pipe.SourceChannel read.
|
|
*/
|
|
@Test
|
|
void testPipeReadInterrupt() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
|
|
// interrupt current thread when it blocks reading from source
|
|
Thread thisThread = Thread.currentThread();
|
|
runAfterParkedAsync(thisThread::interrupt);
|
|
|
|
try {
|
|
int n = source.read(ByteBuffer.allocate(100));
|
|
fail("read returned " + n);
|
|
} catch (ClosedByInterruptException expected) {
|
|
assertTrue(Thread.interrupted());
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Pipe.SinkChannel close while virtual thread blocked in write.
|
|
*/
|
|
@Test
|
|
void testPipeWriteAsyncClose() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
boolean retry = true;
|
|
while (retry) {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
|
|
// close sink when current thread blocks in write
|
|
runAfterParkedAsync(sink::close);
|
|
try {
|
|
ByteBuffer bb = ByteBuffer.allocate(100*1024);
|
|
for (;;) {
|
|
int n = sink.write(bb);
|
|
assertTrue(n > 0);
|
|
bb.clear();
|
|
}
|
|
} catch (AsynchronousCloseException e) {
|
|
// closed when blocked in write
|
|
retry = false;
|
|
} catch (ClosedChannelException e) {
|
|
// closed when not blocked in write, need to retry test
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Virtual thread interrupted while blocked in Pipe.SinkChannel write.
|
|
*/
|
|
@Test
|
|
void testPipeWriteInterrupt() throws Exception {
|
|
VThreadRunner.run(() -> {
|
|
boolean retry = true;
|
|
while (retry) {
|
|
Pipe p = Pipe.open();
|
|
try (Pipe.SinkChannel sink = p.sink();
|
|
Pipe.SourceChannel source = p.source()) {
|
|
|
|
// interrupt current thread when it blocks in write
|
|
Thread thisThread = Thread.currentThread();
|
|
runAfterParkedAsync(thisThread::interrupt);
|
|
|
|
try {
|
|
ByteBuffer bb = ByteBuffer.allocate(100*1024);
|
|
for (;;) {
|
|
int n = sink.write(bb);
|
|
assertTrue(n > 0);
|
|
bb.clear();
|
|
}
|
|
} catch (ClosedByInterruptException expected) {
|
|
// closed when blocked in write
|
|
assertTrue(Thread.interrupted());
|
|
retry = false;
|
|
} catch (ClosedChannelException e) {
|
|
// closed when not blocked in write, need to retry test
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Creates a loopback connection
|
|
*/
|
|
static class Connection implements Closeable {
|
|
private final SocketChannel sc1;
|
|
private final SocketChannel sc2;
|
|
Connection() throws IOException {
|
|
var lh = InetAddress.getLoopbackAddress();
|
|
try (var listener = ServerSocketChannel.open()) {
|
|
listener.bind(new InetSocketAddress(lh, 0));
|
|
SocketChannel sc1 = SocketChannel.open();
|
|
SocketChannel sc2 = null;
|
|
try {
|
|
sc1.socket().connect(listener.getLocalAddress());
|
|
sc2 = listener.accept();
|
|
} catch (IOException ioe) {
|
|
sc1.close();
|
|
throw ioe;
|
|
}
|
|
this.sc1 = sc1;
|
|
this.sc2 = sc2;
|
|
}
|
|
}
|
|
SocketChannel channel1() {
|
|
return sc1;
|
|
}
|
|
SocketChannel channel2() {
|
|
return sc2;
|
|
}
|
|
@Override
|
|
public void close() throws IOException {
|
|
sc1.close();
|
|
sc2.close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Read from a channel until all bytes have been read or an I/O error occurs.
|
|
*/
|
|
static void readToEOF(ReadableByteChannel rbc) throws IOException {
|
|
ByteBuffer bb = ByteBuffer.allocate(16*1024);
|
|
int n;
|
|
while ((n = rbc.read(bb)) > 0) {
|
|
bb.clear();
|
|
}
|
|
}
|
|
|
|
@FunctionalInterface
|
|
interface ThrowingRunnable {
|
|
void run() throws Exception;
|
|
}
|
|
|
|
/**
|
|
* Runs the given task asynchronously after the current virtual thread has parked.
|
|
* @return the thread started to run the task
|
|
*/
|
|
static Thread runAfterParkedAsync(ThrowingRunnable task) {
|
|
Thread target = Thread.currentThread();
|
|
if (!target.isVirtual())
|
|
throw new WrongThreadException();
|
|
return Thread.ofPlatform().daemon().start(() -> {
|
|
try {
|
|
Thread.State state = target.getState();
|
|
while (state != Thread.State.WAITING
|
|
&& state != Thread.State.TIMED_WAITING) {
|
|
Thread.sleep(20);
|
|
state = target.getState();
|
|
}
|
|
Thread.sleep(20); // give a bit more time to release carrier
|
|
task.run();
|
|
} catch (Exception e) {
|
|
e.printStackTrace();
|
|
}
|
|
});
|
|
}
|
|
}
|