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ThreadedResourceObserver.cpp
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00001 /** 00002 * @file ThreadedResourceObserver.cpp 00003 * @brief mbed CoAP DynamicResource Thread-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 "ThreadedResourceObserver.h" 00024 00025 #ifdef CONNECTOR_USING_THREADS 00026 // DEBUG 00027 //DigitalOut __threaded_led(LED2); 00028 #endif 00029 00030 // constructor 00031 ThreadedResourceObserver::ThreadedResourceObserver(DynamicResource *resource,int sleep_time) : 00032 ResourceObserver(resource,sleep_time) 00033 #ifdef CONNECTOR_USING_THREADS 00034 ,m_observation_thread(&ThreadedResourceObserver::_observation_notifier,this) 00035 #endif 00036 { 00037 this->setObserving(false); 00038 // DEBUG 00039 std::printf("ThreadedResourceObserver being used for %s (sleep_time=%d)\r\n",resource->getName().c_str(),sleep_time); 00040 } 00041 00042 // destructor 00043 ThreadedResourceObserver::~ThreadedResourceObserver() { 00044 this->stopObservation(); 00045 #ifdef CONNECTOR_USING_THREADS 00046 this->m_observation_thread.terminate(); 00047 #endif 00048 } 00049 00050 // notifier 00051 void ThreadedResourceObserver::_observation_notifier(void const *instance) { 00052 #ifdef CONNECTOR_USING_THREADS 00053 ThreadedResourceObserver *me = (ThreadedResourceObserver *)instance; 00054 while(true) { 00055 Thread::wait(me->getSleepTime()); 00056 if (me->isObserving() == true && me->getResource() != NULL && nsdl_endpoint_is_registered() == true) { 00057 me->getResource()->observe(); 00058 //__threaded_led = !__threaded_led; 00059 } 00060 } 00061 #endif 00062 } 00063 00064 // begin observing... 00065 void ThreadedResourceObserver::beginObservation() { 00066 this->setObserving(true); 00067 } 00068 00069 // stop observing... 00070 void ThreadedResourceObserver::stopObservation() { 00071 this->setObserving(false); 00072 }
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