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25189c1a6a
Add a few utility classes to test/testlibrary to support multi process testing in jtreg tests. Added a test case for one of the utility classes. Also reviewed by Vitaly Davidovich Reviewed-by: brutisso, dholmes, vlivanov, nloodin, mgerdin
76 lines
2.3 KiB
Java
76 lines
2.3 KiB
Java
/*
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* Copyright (c) 2013, 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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package com.oracle.java.testlibrary;
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import java.io.OutputStream;
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import java.io.InputStream;
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import java.io.IOException;
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public final class StreamPumper implements Runnable {
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private static final int BUF_SIZE = 256;
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private final OutputStream out;
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private final InputStream in;
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/**
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* Create a StreamPumper that reads from in and writes to out.
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*
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* @param in The stream to read from.
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* @param out The stream to write to.
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*/
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public StreamPumper(InputStream in, OutputStream out) {
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this.in = in;
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this.out = out;
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}
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/**
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* Implements Thread.run(). Continuously read from <code>in</code> and write
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* to <code>out</code> until <code>in</code> has reached end of stream. Abort
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* on interruption. Abort on IOExceptions.
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*/
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@Override
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public void run() {
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int length;
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InputStream localIn = in;
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OutputStream localOut = out;
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byte[] buffer = new byte[BUF_SIZE];
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try {
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while (!Thread.interrupted() && (length = localIn.read(buffer)) > 0) {
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localOut.write(buffer, 0, length);
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}
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} catch (IOException e) {
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// Just abort if something like this happens.
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e.printStackTrace();
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} finally {
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try {
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localOut.flush();
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in.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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