a7b3a19ec4
Change force(), load(), and isLoaded() not to throw UOE if there is no file mapping Reviewed-by: alanb, rriggs, forax
53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
/*
|
|
* Copyright (c) 2018, 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
|
|
* @bug 8191416
|
|
* @summary Verify no UnsupportedOperationException for cast subclass
|
|
*/
|
|
|
|
import java.nio.ByteBuffer;
|
|
import java.nio.MappedByteBuffer;
|
|
|
|
public class SubclassCastUOE {
|
|
public static void main(String[] args) throws Exception {
|
|
ByteBuffer buf = ByteBuffer.allocateDirect(37);
|
|
|
|
if (!(buf instanceof MappedByteBuffer)) {
|
|
throw new RuntimeException("Direct buffer not a MappedByteBuffer");
|
|
}
|
|
|
|
if (((MappedByteBuffer)buf).load() != buf) {
|
|
throw new RuntimeException("load() did not return same buffer");
|
|
}
|
|
|
|
if (!((MappedByteBuffer)buf).isLoaded()) {
|
|
throw new RuntimeException("isLoaded() returned false");
|
|
}
|
|
|
|
if (((MappedByteBuffer)buf).force() != buf) {
|
|
throw new RuntimeException("force() did not return same buffer");
|
|
}
|
|
}
|
|
}
|