/*
    * Copyright 2025 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:
    *
    *   https://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.buffer;
  
  import jdk.jfr.DataAmount;
  import jdk.jfr.Description;
  import jdk.jfr.MemoryAddress;
  
  @SuppressWarnings("Since15")
  abstract class AbstractBufferEvent extends AbstractAllocatorEvent {
      @DataAmount
      @Description("Configured buffer capacity")
      public int size;
      @DataAmount
      @Description("Actual allocated buffer capacity")
      public int maxFastCapacity;
      @DataAmount
      @Description("Maximum buffer capacity")
      public int maxCapacity;
      @Description("Is this buffer referencing off-heap memory?")
      public boolean direct;
      @Description("The memory address of the off-heap memory, if available")
      @MemoryAddress
      public long address;
  
      public void fill(AbstractByteBuf buf, Class<? extends AbstractByteBufAllocator> allocatorType) {
          this.allocatorType = allocatorType;
          size = buf.capacity();
          maxFastCapacity = buf.maxFastWritableBytes() + buf.writerIndex();
          maxCapacity = buf.maxCapacity();
          direct = buf.isDirect();
          address = buf._memoryAddress();
      }
  }