1 | /*
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2 | * Project: MoleCuilder
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3 | * Description: creates and alters molecular systems
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4 | * Copyright (C) 2010 University of Bonn. All rights reserved.
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5 | * Please see the LICENSE file or "Copyright notice" in builder.cpp for details.
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6 | */
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7 |
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8 | /*
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9 | * Notification.cpp
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10 | *
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11 | * Created on: Dec 1, 2011
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12 | * Author: heber
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13 | */
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14 |
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15 | // include config.h
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16 | #ifdef HAVE_CONFIG_H
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17 | #include <config.h>
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18 | #endif
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19 |
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20 | //#include "CodePatterns/MemDebug.hpp"
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21 |
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22 | #include <boost/thread/locks.hpp>
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23 |
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24 | #include "CodePatterns/Observer/Notification.hpp"
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25 | #include "CodePatterns/Observer/Observer.hpp"
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26 | #include "CodePatterns/Observer/ObserverLog.hpp"
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27 |
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28 | Notification::Notification(size_t _channelno) :
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29 | channelno(_channelno)
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30 | {}
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31 |
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32 | Notification::~Notification(){}
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33 |
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34 | void Notification::addObserver(Observer *target, const int priority)
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35 | {
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36 | boost::recursive_mutex::scoped_lock guard(TargetsLock);
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37 | targets.insert( std::make_pair(priority, target) );
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38 | }
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39 |
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40 | void Notification::removeObserver(Observer *target)
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41 | {
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42 | boost::recursive_mutex::scoped_lock guard(TargetsLock);
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43 | for(targets_t::iterator iter=targets.begin();iter!=targets.end();) {
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44 | if((*iter).second == target) {
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45 | targets.erase(iter++);
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46 | } else {
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47 | ++iter;
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48 | }
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49 | }
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50 | }
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51 |
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52 | void Notification::notifyAll(Observable * const publisher)
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53 | {
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54 | boost::recursive_mutex::scoped_lock guard(TargetsLock);
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55 | // copy such that signOff() within receiving update() does not affect iterating
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56 | // this is because within the same thread and with the update() signOff() may be
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57 | // called and when executed it modifies targets
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58 | targets_t temp_targets = targets;
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59 | for(targets_t::iterator it=temp_targets.begin();
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60 | it!=temp_targets.end();++it){
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61 | #ifdef LOG_OBSERVER
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62 | observerLog().addMessage() << "-> Sending update from " << observerLog().getName(publisher)
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63 | << " for channel " << channelno
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64 | << " to " << observerLog().getName((*it).second);
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65 | #endif
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66 | (*it).second->recieveNotification(publisher,this);
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67 | }
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68 | }
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69 |
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70 | void Notification::subjectKilled(Observable * const publisher)
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71 | {
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72 | boost::recursive_mutex::scoped_lock guard(TargetsLock);
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73 | // copy such that signOff() within receiving subjectKilled() does not affect iterating
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74 | // this is because within the same thread and with the subjectKilled() signOff() may be
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75 | // called and when executed it modifies targets
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76 | for(targets_t::iterator it=targets.begin();
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77 | !targets.empty();it=targets.begin()){
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78 | Observer *target = (*it).second;
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79 | const size_t prior_size = targets.size();
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80 | target->subjectKilled(publisher);
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81 | if (prior_size == targets.size())
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82 | targets.erase(it);
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83 | }
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84 | }
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