1 /*

     2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_JFR_UTILITIES_RESOURCEMANAGER_HPP

    26 #define SHARE_VM_JFR_UTILITIES_RESOURCEMANAGER_HPP

    27 

    28 #include "memory/allocation.hpp"

    29 

    30 template <class T>

    31 class ResourceManager : public StackObj {

    32  private:

    33   T* const _resource;

    34  public:

    35   ResourceManager(T* resource) : _resource(resource) {}

    36   ~ResourceManager() {

    37     if (_resource != NULL) {

    38       delete _resource;

    39     }

    40   }

    41   operator T*() { return _resource; }

    42   T* operator->() { return _resource; }

    43 };

    44 

    45 template <class T>

    46 class ResourceArrayManager : public StackObj {

    47  private:

    48   T* const _resource_array;

    49  public:

    50   ResourceArrayManager(T* resource_array) : _resource_array(resource_array) {}

    51   ~ResourceArrayManager() {

    52     if (_resource_array != NULL) {

    53       delete [] _resource_array;

    54     }

    55   }

    56   operator T*() { return _resource_array; }

    57   T* operator->() const { return _resource_array; }

    58 };

    59 

    60 #endif // SHARE_VM_JFR_UTILITIES_RESOURCEMANAGER_HPP