Mercurial > hg > truffle
view test/runtime/memory/ReserveMemory.java @ 10294:2f9ac66165e6
Merge
author | jwilhelm |
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date | Fri, 17 May 2013 08:00:01 +0200 |
parents | f32b6c267d2e |
children | f54c85acc043 |
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/* * Copyright (c) 2013, 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. */ /* * @test * @key regression * @bug 8012015 * @summary Make sure reserved (but uncommitted) memory is not accessible * @library /testlibrary /testlibrary/whitebox * @build ReserveMemory * @run main ClassFileInstaller sun.hotspot.WhiteBox * @run main ReserveMemory */ import com.oracle.java.testlibrary.*; import java.lang.reflect.Field; import sun.hotspot.WhiteBox; import sun.misc.Unsafe; public class ReserveMemory { private static Unsafe getUnsafe() throws Exception { Field f = Unsafe.class.getDeclaredField("theUnsafe"); f.setAccessible(true); return (Unsafe)f.get(null); } private static boolean isWindows() { return System.getProperty("os.name").toLowerCase().startsWith("win"); } public static void main(String args[]) throws Exception { if (args.length > 0) { long address = WhiteBox.getWhiteBox().reserveMemory(4096); System.out.println("Reserved memory at address: 0x" + Long.toHexString(address)); System.out.println("Will now read from the address, expecting a crash!"); int x = getUnsafe().getInt(address); throw new Exception("Read of reserved/uncommitted memory unexpectedly succeeded, expected crash!"); } ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( "-Xbootclasspath/a:.", "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI", "ReserveMemory", "test"); OutputAnalyzer output = new OutputAnalyzer(pb.start()); if (isWindows()) { output.shouldContain("EXCEPTION_ACCESS_VIOLATION"); } else { output.shouldContain("SIGSEGV"); } } }