1 /* 2 * Copyright (c) 2016, 2019, 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