f0ee2e1467
This is a step toward effectively eliminating reference counting. Reference counting is only needed when the memory in buffers can be shared. If we remove all forms of sharing, then the buffers would be in an owned state at all times. Then we would no longer need to worry about the state of the buffers before calling, e.g. `ensureWritable` and methods like that. Just removing `acquire` is not enough; we also need to remove the `slice` method. In this commit we are, however, starting with `acquire` because doing so requires rearranging the type hierarchy and the generics we have in play. This was not an easy exercise, but for the purpose of record keeping, it's useful to have that work separate from the work of removing `slice`.
41 lines
1.8 KiB
Java
41 lines
1.8 KiB
Java
/*
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* Copyright 2020 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.buffer.api;
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import java.nio.ByteBuffer;
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/**
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* A processor of {@linkplain ReadableComponent readable components}.
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*/
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@FunctionalInterface
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public interface ReadableComponentProcessor<E extends Exception> {
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/**
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* Process the given component at the given index in the
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* {@link Buffer#forEachReadable(int, ReadableComponentProcessor) iteration}.
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* <p>
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* The component object itself is only valid during this call, but the {@link ByteBuffer byte buffers}, arrays, and
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* native address pointers obtained from it, will be valid until any operation is performed on the buffer, which
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* changes the internal memory.
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*
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* @param index The current index of the given buffer component, based on the initial index passed to the
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* {@link Buffer#forEachReadable(int, ReadableComponentProcessor)} method.
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* @param component The current buffer component being processed.
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* @return {@code true} if the iteration should continue and more components should be processed, otherwise
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* {@code false} to stop the iteration early.
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*/
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boolean process(int index, ReadableComponent component) throws E;
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}
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