russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
71 lines
2.6 KiB
Java
71 lines
2.6 KiB
Java
/*
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* Copyright (c) 2026, 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
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* @summary child process should not hang even if parent process has closed System.out/err
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* @bug 8366736
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* @run main/othervm InheritIOClosed close dontclose
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* @run main/othervm InheritIOClosed dontclose close
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* @run main/othervm InheritIOClosed close close
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*/
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import java.nio.file.Path;
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public class InheritIOClosed {
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private final static Path JAVA_EXE =
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Path.of(System.getProperty("java.home"), "bin", "java");
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private static final String s = "1234567890".repeat(10);
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public static void main(String[] args) throws Exception {
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if (args.length == 2) {
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// Main test process
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if (args[0].equals("close")) {
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System.out.close();
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}
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if (args[1].equals("close")) {
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System.err.close();
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}
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ProcessBuilder pb = new ProcessBuilder().inheritIO()
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.command(JAVA_EXE.toString(),
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"-cp",
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System.getProperty("java.class.path"),
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InheritIOClosed.class.getName());
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Process process = pb.start();
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process.waitFor();
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System.out.println("Done");
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} else {
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// Child process -- print to System.out/err. Without the fix in
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// JDK-8366736, this process will hang on Windows.
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for (int i = 0; i < 100; i++) {
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System.out.println(s);
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}
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for (int i = 0; i < 100; i++) {
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System.err.println(s);
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}
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}
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}
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}
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