95709828bf
Motivation: We need a new implementation of our new API that supports Java 11, since that is what Netty 5 will most likely baseline on. We also need an implementation that does not rely on Unsafe. This leaves us with ByteBuffer as the underlying currency of memory. Modification: - Add a NioBuffer implementation and associated supporting classes. - The entry-point for this is a new MemoryManagers API, which is used to pick the implementation and provide the on-/off-heap MemoryManager implementations. - Add a mechanism to configure/override which MemoryManagers implementation to use. - The MemoryManagers implementations are service-loadable, so new ones can be discovered at runtime. - The existing MemorySegment based implementation also get a MemoryManagers implementation. - Expand the BufferTest to include all combinations of all implementations. We now run 360.000 tests in BufferTest. - Some common infrastructure, like ArcDrop, is moved to its own package. - Add a module-info.java to control the service loading, and the visibility in the various packages. - Some pom.xml file updates to support our now module based project. Result: We have an implementation that should work on Java 11, but we currently don't build or test on 11. More work needs to happen before that is a reality.
32 lines
1.3 KiB
Java
32 lines
1.3 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 io.netty.buffer.api.memseg.HeapMemorySegmentManager;
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import io.netty.buffer.api.memseg.NativeMemorySegmentManager;
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import java.lang.ref.Cleaner;
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public interface MemoryManager {
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boolean isNative();
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Buffer allocateConfined(AllocatorControl allocatorControl, long size, Drop<Buffer> drop, Cleaner cleaner);
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Buffer allocateShared(AllocatorControl allocatorControl, long size, Drop<Buffer> drop, Cleaner cleaner);
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Drop<Buffer> drop();
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Object unwrapRecoverableMemory(Buffer buf);
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int capacityOfRecoverableMemory(Object memory);
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Buffer recoverMemory(AllocatorControl allocatorControl, Object recoverableMemory, Drop<Buffer> drop);
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}
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