| /* |
| * Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * author Edward Wang |
| * |
| * @test |
| * @bug 6368984 |
| * @summary Configuring unconnected Socket before passing to implAccept |
| * can cause fd leak |
| * @requires (os.family != "windows") |
| * @library /test/lib |
| * @build jdk.test.lib.JDKToolFinder |
| * jdk.test.lib.process.OutputAnalyzer |
| * AcceptCauseFileDescriptorLeak |
| * @run main/othervm AcceptCauseFileDescriptorLeak root |
| */ |
| |
| import java.io.IOException; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.util.List; |
| |
| import jdk.test.lib.JDKToolFinder; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class AcceptCauseFileDescriptorLeak { |
| private static final int REPS = 2048; |
| private static final int THRESHOLD = 1024; |
| |
| public static void main(String[] args) throws Exception { |
| if (args.length != 0) { |
| OutputAnalyzer analyzer = execCmd("ulimit -n -H"); |
| String output = analyzer.getOutput(); |
| if (output == null || output.length() == 0) { |
| throw new RuntimeException("\"ulimit -n -H\" output nothing" |
| + " and its exit code is " + analyzer.getExitValue()); |
| } else { |
| output = output.trim(); |
| // Set max open file descriptors to 1024 |
| // if it is unlimited or greater than 1024, |
| // otherwise just do test directly |
| if ("unlimited".equals(output) |
| || Integer.valueOf(output) > THRESHOLD) { |
| analyzer = execCmd("ulimit -n " + THRESHOLD + "; " |
| + composeJavaTestStr()); |
| System.out.println("Output: [" |
| + analyzer.getOutput() + "]"); |
| int rc = analyzer.getExitValue(); |
| if (rc != 0) { |
| throw new RuntimeException( |
| "Unexpected exit code: " + rc); |
| } |
| return; |
| } |
| } |
| } |
| |
| final ServerSocket ss = new ServerSocket(0) { |
| public Socket accept() throws IOException { |
| Socket s = new Socket() { |
| }; |
| s.setSoTimeout(10000); |
| implAccept(s); |
| return s; |
| } |
| }; |
| Thread t = new Thread(new Runnable() { |
| public void run() { |
| try { |
| for (int i = 0; i < REPS; i++) { |
| (new Socket("localhost", ss.getLocalPort())).close(); |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| }); |
| t.start(); |
| try { |
| for (int i = 0; i < REPS; i++) { |
| ss.accept().close(); |
| } |
| } finally { |
| ss.close(); |
| } |
| t.join(); |
| } |
| |
| /** |
| * Execute command with shell |
| * |
| * @param command |
| * @return OutputAnalyzer |
| * @throws IOException |
| */ |
| static OutputAnalyzer execCmd(String command) throws IOException { |
| List<String> cmd = List.of("sh", "-c", command); |
| System.out.println("Executing: " + cmd); |
| ProcessBuilder pb = new ProcessBuilder(cmd); |
| return new OutputAnalyzer(pb.start()); |
| } |
| |
| static String composeJavaTestStr() { |
| return JDKToolFinder.getTestJDKTool("java") + " " |
| + AcceptCauseFileDescriptorLeak.class.getName(); |
| } |
| } |
| |