| /* |
| * Copyright (c) 2007, 2011, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| package jdk.internal.misc; |
| |
| import java.nio.Buffer; |
| import java.nio.ByteBuffer; |
| |
| public interface JavaNioAccess { |
| /** |
| * Provides access to information on buffer usage. |
| */ |
| interface BufferPool { |
| String getName(); |
| long getCount(); |
| long getTotalCapacity(); |
| long getMemoryUsed(); |
| } |
| BufferPool getDirectBufferPool(); |
| |
| /** |
| * Constructs a direct ByteBuffer referring to the block of memory starting |
| * at the given memory address and extending {@code cap} bytes. |
| * The {@code ob} parameter is an arbitrary object that is attached |
| * to the resulting buffer. |
| */ |
| ByteBuffer newDirectByteBuffer(long addr, int cap, Object ob); |
| |
| /** |
| * Truncates a buffer by changing its capacity to 0. |
| */ |
| void truncate(Buffer buf); |
| |
| } |