src/main/java/com/google/devtools/build/lib/concurrent/AddressFreer.java

// Copyright 2023 The Bazel Authors. All rights reserved.
//
// Licensed 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
//
//    http://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 com.google.devtools.build.lib.concurrent;

import static com.google.devtools.build.lib.unsafe.UnsafeProvider.unsafe;


import java.lang.ref.Cleaner;
import sun.misc.Unsafe;

/** Used to cleanup memory allocated by {@link Unsafe#allocateMemory} using {@link Cleaner}. */
@SuppressWarnings("SunApi") // TODO: b/359688989 - clean this up
final class AddressFreer implements Runnable {
  private final long address;

  AddressFreer(long address) {
    this.address = address;
  }

  // TODO: b/386384684 - remove Unsafe usage
  @Override
  public void run() {
    unsafe().freeMemory(address);
  }
}