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1933.2.7
by Brian Aker
Break out observer to its own class, same with lock. |
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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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1999.6.1
by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file |
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* Copyright (C) 2010 Brian Aker
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1933.2.7
by Brian Aker
Break out observer to its own class, same with lock. |
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the <organization> nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <boost/thread/mutex.hpp> |
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#include <boost/thread/condition_variable.hpp> |
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#include <boost/shared_ptr.hpp> |
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#ifndef PLUGIN_USER_LOCKS_OBSERVER_H
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#define PLUGIN_USER_LOCKS_OBSERVER_H
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namespace user_locks { |
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class Observer { |
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public: |
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typedef boost::shared_ptr<Observer> shared_ptr; |
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typedef std::list <shared_ptr> list; |
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Observer(int64_t wait_until_arg) : |
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woken(false), |
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waiting_for(wait_until_arg) |
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{
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_mutex.lock(); |
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}
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void sleep() |
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{
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while (not woken) |
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{
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cond.wait(_mutex); |
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}
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_mutex.unlock(); |
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}
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void wake() |
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{
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{
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boost::mutex::scoped_lock mutex; |
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woken= true; |
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}
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cond.notify_all(); |
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}
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~Observer() |
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{
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}
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int64_t getLimit() const |
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{
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return waiting_for; |
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}
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private: |
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bool woken; |
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const int64_t waiting_for; |
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boost::mutex _mutex; |
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boost::condition_variable_any cond; |
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};
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} // namespace user_locks |
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#endif /* PLUGIN_USER_LOCKS_OBSERVER_H */ |