JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#ifndef SHARE_JFR_UTILITIES_JFRRESOURCEMANAGER_HPP
#define SHARE_JFR_UTILITIES_JFRRESOURCEMANAGER_HPP

#include "memory/allocation.hpp"

template <class T>
class ResourceManager : public StackObj {
 private:
  T* const _resource;
 public:
  ResourceManager(T* resource) : _resource(resource) {}
  ~ResourceManager() {
    if (_resource != NULL) {
      delete _resource;
    }
  }
  operator T*() { return _resource; }
  T* operator->() { return _resource; }
};

template <class T>
class ResourceArrayManager : public StackObj {
 private:
  T* const _resource_array;
 public:
  ResourceArrayManager(T* resource_array) : _resource_array(resource_array) {}
  ~ResourceArrayManager() {
    if (_resource_array != NULL) {

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