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00038 #include "SystemQueue.h"
00039
00040 namespace ariba {
00041 namespace utility {
00042
00043 use_logging_cpp(SystemQueue);
00044
00045 SystemQueue::SystemQueue()
00046 #ifndef UNDERLAY_OMNET
00047 : delayScheduler( &directScheduler ), systemQueueRunning( false )
00048 #endif
00049 {
00050 }
00051
00052 SystemQueue::~SystemQueue() {
00053 }
00054
00055 void SystemQueue::scheduleEvent( const SystemEvent& event, uint32_t delay ) {
00056 #ifndef UNDERLAY_OMNET
00057 if( delay == 0 ) directScheduler.insert( event, delay );
00058 else delayScheduler.insert ( event, delay );
00059 #else
00060 Enter_Method_Silent();
00061 cMessage* msg = new cMessage();
00062 msg->setContextPointer( new SystemEvent(event) );
00063
00064 if( delay == 0 )
00065 cSimpleModule::scheduleAt( cSimpleModule::simTime(), msg );
00066 else
00067 cSimpleModule::scheduleAt( cSimpleModule::simTime()+((double)delay/1000.0), msg );
00068 #endif
00069 }
00070
00071 #ifdef UNDERLAY_OMNET
00072 void SystemQueue::handleMessage(cMessage* msg){
00073 SystemEvent* event = (SystemEvent*)msg->contextPointer();
00074
00075 event->listener->handleSystemEvent( *event );
00076
00077 delete event; delete msg;
00078 }
00079 #endif
00080
00081 void SystemQueue::run() {
00082 #ifndef UNDERLAY_OMNET
00083 systemQueueRunning = true;
00084 directScheduler.run();
00085 delayScheduler.run();
00086 #endif
00087 }
00088
00089 void SystemQueue::cancel() {
00090 #ifndef UNDERLAY_OMNET
00091 systemQueueRunning = false;
00092 directScheduler.cancel();
00093 delayScheduler.cancel();
00094 #endif
00095 }
00096
00097 void SystemQueue::dropAll( const SystemEventListener* mlistener){
00098 #ifndef UNDERLAY_OMNET
00099 directScheduler.dropAll(mlistener);
00100 delayScheduler.dropAll(mlistener);
00101 #endif
00102 }
00103
00104 bool SystemQueue::isEmpty() {
00105 #ifndef UNDERLAY_OMNET
00106 return directScheduler.isEmpty() || delayScheduler.isEmpty();
00107 #else
00108 return false;
00109 #endif
00110 }
00111
00112 bool SystemQueue::isRunning() {
00113 #ifndef UNDERLAY_OMNET
00114 return systemQueueRunning;
00115 #else
00116 return true;
00117 #endif
00118 }
00119
00120 void SystemQueue::enterMethod(){
00121
00122 directScheduler.enter();
00123 }
00124
00125 void SystemQueue::leaveMethod(){
00126
00127 directScheduler.leave();
00128 }
00129
00130
00131 #ifndef UNDERLAY_OMNET
00132
00133 SystemQueue::QueueThread::QueueThread(QueueThread* _transferQueue)
00134 : transferQueue( _transferQueue ), running( false ) {
00135 }
00136
00137 SystemQueue::QueueThread::~QueueThread(){
00138 }
00139
00140 void SystemQueue::QueueThread::run(){
00141 running = true;
00142
00143 queueThread = new boost::thread(
00144 boost::bind(&QueueThread::threadFunc, this) );
00145 }
00146
00147 void SystemQueue::QueueThread::cancel(){
00148
00149 logging_debug("cancelling system queue");
00150
00151
00152 {
00153
00154
00155 boost::mutex::scoped_lock lock(queueMutex);
00156
00157
00158
00159 running = false;
00160 itemsAvailable.notify_all();
00161 }
00162
00163
00164 logging_debug("joining system queue thread");
00165 queueThread->join();
00166
00167
00168 logging_debug("deleting pending system queue events");
00169 while( eventsQueue.size() > 0 ){
00170 eventsQueue.erase( eventsQueue.begin() );
00171 }
00172
00173
00174 delete queueThread;
00175 queueThread = NULL;
00176 }
00177
00178 bool SystemQueue::QueueThread::isEmpty(){
00179 boost::mutex::scoped_lock lock( queueMutex );
00180 return eventsQueue.empty();
00181 }
00182
00183 void SystemQueue::QueueThread::insert( const SystemEvent& event, uint32_t delay ){
00184
00185
00186
00187
00188
00189
00190 boost::mutex::scoped_lock lock( queueMutex );
00191
00192 eventsQueue.push_back( event );
00193 eventsQueue.back().scheduledTime = boost::posix_time::microsec_clock::local_time();
00194 eventsQueue.back().delayTime = delay;
00195 eventsQueue.back().remainingDelay = delay;
00196
00197 onItemInserted( event );
00198 itemsAvailable.notify_all();
00199 }
00200
00201 void SystemQueue::QueueThread::dropAll( const SystemEventListener* mlistener) {
00202 boost::mutex::scoped_lock lock( queueMutex );
00203
00204 bool deleted;
00205 do{
00206 deleted = false;
00207 EventQueue::iterator i = eventsQueue.begin();
00208 EventQueue::iterator iend = eventsQueue.end();
00209
00210 for( ; i != iend; i++){
00211 if((*i).getListener() == mlistener){
00212 eventsQueue.erase(i);
00213 deleted = true;
00214 break;
00215 }
00216 }
00217 }while(deleted);
00218 }
00219
00220 void SystemQueue::QueueThread::threadFunc( QueueThread* obj ) {
00221
00222 boost::mutex::scoped_lock lock( obj->queueMutex );
00223
00224 while( obj->running ) {
00225
00226
00227
00228
00229
00230
00231 while ( obj->running && obj->eventsQueue.empty() ){
00232
00233
00234
00235
00236
00237
00238 obj->itemsAvailable.wait( lock );
00239 }
00240
00241
00242
00243
00244
00245 while( obj->running && (!obj->eventsQueue.empty()) ) {
00246
00247
00248
00249 SystemEvent ev = obj->eventsQueue.front();
00250 obj->eventsQueue.erase( obj->eventsQueue.begin() );
00251
00252
00253
00254 obj->queueMutex.unlock();
00255 obj->onNextQueueItem( ev );
00256 obj->queueMutex.lock();
00257
00258 }
00259 }
00260
00261 logging_debug("system queue exited");
00262 }
00263
00264 void SystemQueue::QueueThread::enter(){
00265 queueMutex.lock();
00266 }
00267
00268 void SystemQueue::QueueThread::leave(){
00269 queueMutex.unlock();
00270 }
00271
00272
00273
00274
00275 SystemQueue::QueueThreadDirect::QueueThreadDirect(){
00276 }
00277
00278 SystemQueue::QueueThreadDirect::~QueueThreadDirect(){
00279 }
00280
00281 void SystemQueue::QueueThreadDirect::onItemInserted( const SystemEvent& event ){
00282
00283 }
00284
00285 void SystemQueue::QueueThreadDirect::onNextQueueItem( const SystemEvent& event ){
00286
00287 event.getListener()->handleSystemEvent( event );
00288 }
00289
00290
00291
00292 SystemQueue::QueueThreadDelay::QueueThreadDelay(QueueThread* _transferQueue)
00293 : QueueThread( _transferQueue ), isSleeping( false ) {
00294
00295 assert( _transferQueue != NULL );
00296 }
00297
00298 SystemQueue::QueueThreadDelay::~QueueThreadDelay(){
00299 }
00300
00301 void SystemQueue::QueueThreadDelay::onItemInserted( const SystemEvent& event ){
00302
00303 if( !isSleeping) return;
00304
00305
00306
00307
00308
00309 assert( !eventsQueue.empty());
00310 sleepCond.notify_all();
00311
00312 ptime sleepEnd = boost::posix_time::microsec_clock::local_time();
00313 boost::posix_time::time_duration duration = sleepEnd - sleepStart;
00314 uint32_t sleptTime = duration.total_milliseconds();
00315
00316 EventQueue::iterator i = eventsQueue.begin();
00317 EventQueue::iterator iend = eventsQueue.end();
00318
00319 for( ; i != iend; i++ ) {
00320
00321 if( sleptTime >= i->remainingDelay)
00322 i->remainingDelay = 0;
00323 else
00324 i->remainingDelay -= sleptTime;
00325
00326 }
00327
00328
00329
00330
00331
00332
00333 std::sort( eventsQueue.begin(), eventsQueue.end() );
00334
00335 }
00336
00337 void SystemQueue::QueueThreadDelay::onNextQueueItem( const SystemEvent& event ){
00338
00339
00340
00341
00342
00343 assert( !isSleeping );
00344
00345
00346
00347
00348
00349 if( event.remainingDelay > 0 ) {
00350
00351 const boost::system_time duration =
00352 boost::get_system_time() +
00353 boost::posix_time::milliseconds(event.remainingDelay);
00354
00355 {
00356 boost::unique_lock<boost::mutex> lock( sleepMutex );
00357
00358 sleepStart = boost::posix_time::microsec_clock::local_time();
00359 isSleeping = true;
00360
00361 sleepCond.timed_wait( lock, duration );
00362
00363 isSleeping = false;
00364 }
00365
00366 }
00367
00368
00369
00370
00371
00372 ptime sleepEnd = boost::posix_time::microsec_clock::local_time();
00373 boost::posix_time::time_duration duration = sleepEnd - sleepStart;
00374 uint32_t sleptTime = duration.total_milliseconds();
00375
00376 if (event.remainingDelay <= sleptTime)
00377 transferQueue->insert( event, 0 );
00378 }
00379
00380 #endif // #ifndef UNDERLAY_OMNET
00381
00382
00383
00384 }}