/*
    * Copyright 2022 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.netty5.buffer.api.unsafe;
  
  import io.netty5.buffer.api.Buffer;
  import io.netty5.buffer.api.Drop;
  import io.netty5.buffer.api.internal.Statics;
  import io.netty5.util.internal.PlatformDependent;
  
  class FreeAddress implements Runnable, Drop<Buffer> {
      private final long address;
      private final int size;
  
      FreeAddress(long address, int size) {
          this.address = address;
          this.size = size;
      }
  
      @Override
      public void run() {
          PlatformDependent.freeMemory(address);
          Statics.MEM_USAGE_NATIVE.add(-size);
      }
  
      @Override
      public void drop(Buffer obj) {
          run();
      }
  
      @Override
      public Drop<Buffer> fork() {
          throw new IllegalStateException(this + " cannot fork. Must be guarded by an ArcDrop.");
      }
  
      @Override
      public void attach(Buffer obj) {
      }
  
      @Override
      public String toString() {
          return String.format("FreeAddress(0x%x, %s bytes)", address, size);
      }
  }