32ac72c3d3
Co-authored-by: Maurizio Cimadamore <mcimadamore@openjdk.org> Co-authored-by: Jorn Vernee <jvernee@openjdk.org> Co-authored-by: Per Minborg <pminborg@openjdk.org> Reviewed-by: dholmes, psandoz, mcimadamore, alanb
88 lines
3.3 KiB
Java
88 lines
3.3 KiB
Java
/*
|
|
* Copyright (c) 2022, 2023, 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.
|
|
*/
|
|
|
|
import jdk.test.lib.RandomFactory;
|
|
|
|
import java.lang.foreign.Arena;
|
|
import java.lang.foreign.MemorySegment;
|
|
|
|
import java.io.IOException;
|
|
import java.nio.ByteBuffer;
|
|
import java.nio.channels.FileChannel;
|
|
import java.nio.file.Path;
|
|
import java.util.Random;
|
|
import java.util.concurrent.TimeUnit;
|
|
|
|
import static java.nio.file.StandardOpenOption.*;
|
|
|
|
/*
|
|
* @test
|
|
* @bug 8286637
|
|
* @summary Ensure that memory mapping beyond 32-bit range does not cause an
|
|
* EXCEPTION_ACCESS_VIOLATION.
|
|
* @requires vm.bits == 64
|
|
* @library /test/lib
|
|
* @build jdk.test.lib.RandomFactory FileChannelUtils
|
|
* @run main/othervm LargeMapTest
|
|
* @key randomness
|
|
*/
|
|
public class LargeMapTest {
|
|
private static final long LENGTH = (1L << 32) + 512;
|
|
private static final int EXTRA = 1024;
|
|
private static final long BASE = LENGTH - EXTRA;
|
|
private static final Random GEN = RandomFactory.getRandom();
|
|
|
|
public static void main(String[] args) throws IOException {
|
|
System.out.println(System.getProperty("sun.arch.data.model"));
|
|
System.out.println(System.getProperty("os.arch"));
|
|
System.out.println(System.getProperty("java.version"));
|
|
|
|
System.out.println(" Writing large file...");
|
|
long t0 = System.nanoTime();
|
|
Path p = FileChannelUtils.createSparseTempFile("test", ".dat");
|
|
p.toFile().deleteOnExit();
|
|
ByteBuffer bb;
|
|
try (FileChannel fc = FileChannel.open(p, WRITE)) {
|
|
fc.position(BASE);
|
|
byte[] b = new byte[EXTRA];
|
|
GEN.nextBytes(b);
|
|
bb = ByteBuffer.wrap(b);
|
|
fc.write(bb);
|
|
long t1 = System.nanoTime();
|
|
System.out.printf(" Wrote large file in %d ns (%d ms) %n",
|
|
t1 - t0, TimeUnit.NANOSECONDS.toMillis(t1 - t0));
|
|
}
|
|
bb.rewind();
|
|
|
|
try (FileChannel fc = FileChannel.open(p, READ, WRITE)) {
|
|
MemorySegment mappedMemorySegment =
|
|
fc.map(FileChannel.MapMode.READ_WRITE, 0, p.toFile().length(),
|
|
Arena.ofAuto());
|
|
MemorySegment target = mappedMemorySegment.asSlice(BASE, EXTRA);
|
|
if (!target.asByteBuffer().equals(bb)) {
|
|
throw new RuntimeException("Expected buffers to be equal");
|
|
}
|
|
}
|
|
}
|
|
}
|