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95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/*******************************************************************************
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* $Id$
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*
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*******************************************************************************/
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/*
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* Observer.cpp
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*
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* Created on: Oct 5, 2011
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* Author: bpaul@calpont.com
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*/
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#include <boost/thread/mutex.hpp>
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#include "we_observer.h"
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namespace WriteEngine {
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//-----------------------------------------------------------------------------
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// ctor
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Observer::Observer() {
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}
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//-----------------------------------------------------------------------------
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//dtor
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Observer::~Observer() {
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//
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}
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//-----------------------------------------------------------------------------
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//ctor
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Subject::Subject(){
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}
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//-----------------------------------------------------------------------------
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//dtor
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Subject::~Subject(){
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}
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//-----------------------------------------------------------------------------
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void Subject::attach(Observer* Obs) {
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boost::mutex::scoped_lock aLstLock;
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fObs.push_back(Obs);
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}
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//-----------------------------------------------------------------------------
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void Subject::detach(Observer* Obs) {
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boost::mutex::scoped_lock aLstLock;
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Observers::iterator aIt = fObs.begin();
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while (aIt != fObs.end()) {
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if ((*aIt) == Obs) {
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fObs.erase(aIt);
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break;
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}
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}
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}
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//-----------------------------------------------------------------------------
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void Subject::notify() {
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boost::mutex::scoped_lock aLstLock;
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Observers::iterator aIt = fObs.begin();
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while (aIt != fObs.end()) {
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(*aIt)->update(this);
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}
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}
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//-----------------------------------------------------------------------------
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}// namespace WriteEngine
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