| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.internal.mem; |
| |
| import org.apache.ignite.internal.mem.unsafe.UnsafeMemoryProvider; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| |
| /** |
| * |
| */ |
| public class UnsafeChunk implements DirectMemoryRegion { |
| /** */ |
| private long ptr; |
| |
| /** */ |
| private long len; |
| |
| /** |
| * @param ptr Pointer to the memory start. |
| * @param len Memory length. |
| */ |
| public UnsafeChunk(long ptr, long len) { |
| this.ptr = ptr; |
| this.len = len; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long address() { |
| return ptr; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long size() { |
| return len; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public DirectMemoryRegion slice(long offset) { |
| if (offset < 0 || offset >= len) |
| throw new IllegalArgumentException("Failed to create a memory region slice [ptr=" + U.hexLong(ptr) + |
| ", len=" + len + ", offset=" + offset + ']'); |
| |
| return new UnsafeChunk(ptr + offset, len - offset); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(UnsafeChunk.class, this); |
| } |
| } |