-/*
- * Copyright 2001-2007 Internet2
- *
- * 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
+/**
+ * Licensed to the University Corporation for Advanced Internet
+ * Development, Inc. (UCAID) under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
*
- * http://www.apache.org/licenses/LICENSE-2.0
+ * UCAID licenses this file to you 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
*
- * 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.
+ * 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.
*/
/**
- * @file Lockable.h
+ * @file xmltooling/Lockable.h
*
- * Locking abstraction
+ * Locking abstraction.
*/
#ifndef __xmltooling_lockable_h__
/**
* Abstract mixin interface for interfaces that support locking
*/
- struct XMLTOOL_API Lockable
+ class XMLTOOL_API Lockable
{
- virtual ~Lockable() {}
+ protected:
+ Lockable();
+ public:
+ virtual ~Lockable();
/**
* Lock the associated object for exclusive access.
* @param lockee pointer to an object to hold, and optionally lock
* @param lock true iff object is not yet locked
*/
- Locker(Lockable* lockee=NULL, bool lock=true) {
- if (lockee && lock)
- m_lockee=lockee->lock();
- else
- m_lockee=lockee;
- }
+ Locker(Lockable* lockee=nullptr, bool lock=true);
/**
* Optionally locks an object and stores it for later release.
* @param lockee pointer to an object to hold, and optionally lock
* @param lock true iff object is not yet locked
*/
- void assign(Lockable* lockee=NULL, bool lock=true) {
- if (m_lockee)
- m_lockee->unlock();
- m_lockee=NULL;
- if (lockee && lock)
- m_lockee=lockee->lock();
- else
- m_lockee=lockee;
- }
+ void assign(Lockable* lockee=nullptr, bool lock=true);
/**
* Destructor releases lock on held pointer, if any.
*/
- ~Locker() {
- if (m_lockee)
- m_lockee->unlock();
- }
+ ~Locker();
private:
Lockable* m_lockee;