Quelle ReserveMemory.java Sprache: JAVA

/*
* Copyright (c) 2013, 2022, 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.
*/

// Aix commits on touch, so this test won't work.
/*
* @test
* @bug 8012015
* @requires !(os.family == "aix")
* @requires vm.flagless
* @summary Make sure reserved (but uncommitted) memory is not accessible
* @library /test/lib
* @modules java.base/jdk.internal.misc
*          java.management
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run driver ReserveMemory
*/

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Platform;

import jdk.test.whitebox.WhiteBox;

public class ReserveMemory {
  public static void main(String args[]) throws Exception {
    if (args.length > 0) {
      // expected to crash
      WhiteBox.getWhiteBox().readReservedMemory();
    } else {
      ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-Xbootclasspath/a:.",
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:+WhiteBoxAPI",
            "-XX:-CreateCoredumpOnCrash",
            "-Xmx128m",
            "ReserveMemory",
            "test");

      OutputAnalyzer output = new OutputAnalyzer(pb.start());
      output.shouldNotHaveExitValue(0);
      if (Platform.isWindows()) {
        output.shouldContain("EXCEPTION_ACCESS_VIOLATION");
      } else if (Platform.isOSX()) {
        output.shouldContain("SIGBUS");
      } else {
        output.shouldContain("SIGSEGV");
      }
    }
  }
}

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