netty5/common/src/main/java/io/netty/util/internal/OutOfDirectMemoryError.java
Norman Maurer 3d29bcfc8d Allow to create Unsafe ByteBuf implementations that not use a Cleaner to clean the native memory.
Motivation:

Using the Cleaner to release the native memory has a few drawbacks:

- Cleaner.clean() uses static synchronized internally which means it can be a performance bottleneck
- It put more load on the GC

Modifications:

Add new buffer implementations that can be enabled with a system flag as optimizations. In this case no Cleaner is used at all and the user must ensure everything is always released.

Result:

Less performance impact by direct buffers when need to be allocated and released.
2016-06-03 21:20:10 +02:00

31 lines
1.1 KiB
Java

/*
* Copyright 2016 The Netty Project
*
* The Netty Project 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 io.netty.util.internal;
import java.nio.ByteBuffer;
/**
* {@link OutOfMemoryError} that is throws if {@link PlatformDependent#allocateDirectNoCleaner(int)} can not allocate
* a new {@link ByteBuffer} due memory restrictions.
*/
public final class OutOfDirectMemoryError extends OutOfMemoryError {
private static final long serialVersionUID = 4228264016184011555L;
OutOfDirectMemoryError(String s) {
super(s);
}
}