BufferAllocator.java

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// Protocol Buffers - Google's data interchange format
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// https://developers.google.com/protocol-buffers/
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package com.google.protobuf;
 
import java.nio.ByteBuffer;
 
@ExperimentalApi
abstract class BufferAllocator {
  private static final BufferAllocator UNPOOLED =
      new BufferAllocator() {
        @Override
        public AllocatedBuffer allocateHeapBuffer(int capacity) {
          return AllocatedBuffer.wrap(new byte[capacity]);
        }
 
        @Override
        public AllocatedBuffer allocateDirectBuffer(int capacity) {
          return AllocatedBuffer.wrap(ByteBuffer.allocateDirect(capacity));
        }
      };
 
  public static BufferAllocator unpooled() {
    return UNPOOLED;
  }
 
  public abstract AllocatedBuffer allocateHeapBuffer(int capacity);
 
  public abstract AllocatedBuffer allocateDirectBuffer(int capacity);
}