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1   /*
2    * Copyright 2022 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty5.buffer.api.unsafe;
17  
18  import io.netty5.buffer.api.Buffer;
19  import io.netty5.buffer.api.Drop;
20  import io.netty5.buffer.api.internal.Statics;
21  import io.netty5.util.internal.PlatformDependent;
22  
23  class FreeAddress implements Runnable, Drop<Buffer> {
24      private final long address;
25      private final int size;
26  
27      FreeAddress(long address, int size) {
28          this.address = address;
29          this.size = size;
30      }
31  
32      @Override
33      public void run() {
34          PlatformDependent.freeMemory(address);
35          Statics.MEM_USAGE_NATIVE.add(-size);
36      }
37  
38      @Override
39      public void drop(Buffer obj) {
40          run();
41      }
42  
43      @Override
44      public Drop<Buffer> fork() {
45          throw new IllegalStateException(this + " cannot fork. Must be guarded by an ArcDrop.");
46      }
47  
48      @Override
49      public void attach(Buffer obj) {
50      }
51  
52      @Override
53      public String toString() {
54          return String.format("FreeAddress(0x%x, %s bytes)", address, size);
55      }
56  }