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72 lines
2.5 KiB
Java
72 lines
2.5 KiB
Java
/*
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* Copyright (c) 2025, 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 verifies that failure in AttachListener::dequeue does not crash the VM
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* @bug 8356177
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* @library /test/lib
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* @modules jdk.attach/sun.tools.attach
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*
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* @run driver FailedDequeueTest
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*/
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import java.io.IOException;
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import com.sun.tools.attach.VirtualMachine;
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import sun.tools.attach.HotSpotVirtualMachine;
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import jdk.test.lib.apps.LingeredApp;
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public class FailedDequeueTest {
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public static void main(String[] args) throws Exception {
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LingeredApp app = null;
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try {
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app = LingeredApp.startApp("-Xlog:attach=trace");
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test(app);
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} finally {
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LingeredApp.stopApp(app);
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}
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}
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// The test uses HotSpotVirtualMachine.setFlag method with long flag value (longer than 256K).
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private static String flagName = "HeapDumpPath";
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private static String flagValue = "X" + "A".repeat(256 * 1024) + "X";
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private static void test(LingeredApp app) throws Exception {
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HotSpotVirtualMachine vm = (HotSpotVirtualMachine)VirtualMachine.attach(String.valueOf(app.getPid()));
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try {
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// Should throw IOException and don't crash
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vm.setFlag(flagName, flagValue);
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throw new RuntimeException("expected IOException is not thrown");
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} catch (IOException ex) {
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System.out.println("OK: setFlag thrown expected exception:");
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ex.printStackTrace(System.out);
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} finally {
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vm.detach();
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}
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}
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}
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