TickerResourceObserver.cpp

00001 /**
00002  * @file    TickerResourceObserver.cpp
00003  * @brief   mbed CoAP DynamicResource Ticker-based observer (implementation)
00004  * @author  Doug Anson/Chris Paola
00005  * @version 1.0
00006  * @see
00007  *
00008  * Copyright (c) 2014
00009  *
00010  * Licensed under the Apache License, Version 2.0 (the "License");
00011  * you may not use this file except in compliance with the License.
00012  * You may obtain a copy of the License at
00013  *
00014  *     http://www.apache.org/licenses/LICENSE-2.0
00015  *
00016  * Unless required by applicable law or agreed to in writing, software
00017  * distributed under the License is distributed on an "AS IS" BASIS,
00018  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00019  * See the License for the specific language governing permissions and
00020  * limitations under the License.
00021  */
00022  
00023  #include "TickerResourceObserver.h"
00024   
00025  // constructor
00026  TickerResourceObserver::TickerResourceObserver(DynamicResource *resource,int sleep_time) : 
00027                                     ResourceObserver(resource,(int)(sleep_time/1000)) {
00028      this->setObserving(false);
00029      // DEBUG
00030      std::printf("TickerResourceObserver being used for %s (sleep_time=%d)\r\n",resource->getFullName().c_str(),sleep_time);
00031  }
00032   
00033  // destructor
00034  TickerResourceObserver::~TickerResourceObserver() {
00035      this->stopObservation();
00036  }
00037 
00038  // notifier
00039  void TickerResourceObserver::observationNotifier() {
00040      if (this->isObserving() == true && this->getResource() != NULL && this->getResource()->isRegistered() == true) {
00041          this->getResource()->observe();
00042      }
00043  }
00044  
00045  // begin observing...
00046  void TickerResourceObserver::beginObservation() {
00047      if (this->isObserving() == false) {
00048         this->m_ticker.attach(this,&TickerResourceObserver::observationNotifier,(float)this->getSleepTime());
00049         this->setObserving(true);
00050      }
00051  }
00052  
00053  // begin observing...
00054  void TickerResourceObserver::stopObservation() {
00055      this->setObserving(false);
00056  }