diff options
Diffstat (limited to 'base/callback.hh')
-rw-r--r-- | base/callback.hh | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/base/callback.hh b/base/callback.hh deleted file mode 100644 index 7b3023505..000000000 --- a/base/callback.hh +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Copyright (c) 2003-2005 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef __CALLBACK_HH__ -#define __CALLBACK_HH__ - -#include <list> - -/** - * Generic callback class. This base class provides a virtual process - * function that gets called when the callback queue is processed. - */ -class Callback -{ - public: - /** - * virtualize the destructor to make sure that the correct one - * gets called. - */ - virtual ~Callback() {} - - /** - * virtual process function that is invoked when the callback - * queue is executed. - */ - virtual void process() = 0; -}; - -class CallbackQueue -{ - protected: - /** - * Simple typedef for the data structure that stores all of the - * callbacks. - */ - typedef std::list<Callback *> queue; - - /** - * List of all callbacks. To be called in fifo order. - */ - queue callbacks; - - public: - /** - * Add a callback to the end of the queue - * @param callback the callback to be added to the queue - */ - void add(Callback *callback) - { - callbacks.push_back(callback); - } - - /** - * Find out if there are any callbacks in the queue - */ - bool empty() const { return callbacks.empty(); } - - /** - * process all callbacks - */ - void process() - { - queue::iterator i = callbacks.begin(); - queue::iterator end = callbacks.end(); - - while (i != end) { - (*i)->process(); - ++i; - } - } - - /** - * clear the callback queue - */ - void clear() - { - callbacks.clear(); - } -}; - -/// Helper template class to turn a simple class member function into -/// a callback. -template <class T, void (T::* F)()> -class MakeCallback : public Callback -{ - private: - T *object; - - public: - MakeCallback(T *o) - : object(o) - { } - - void process() { (object->*F)(); } -}; - -#endif // __CALLBACK_HH__ |