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distrib > Mandriva > 2010.0 > i586 > media > contrib-release > by-pkgid > 29c369053a983cc5d8c880dc6e0a2237 > files > 210

libdtn-devel-2.6.0-2mdv2009.1.i586.rpm

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<h1>Controller.cc</h1><a href="Controller_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *    Copyright 2007 Baylor University</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> *    Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> *    you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> *    You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> *        http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> * </span>
<a name="l00010"></a>00010 <span class="comment"> *    Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> *    distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> *    See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> *    limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016 
<a name="l00017"></a>00017 <span class="preprocessor">#include "<a class="code" href="Controller_8h.html">Controller.h</a>"</span>
<a name="l00018"></a>00018 
<a name="l00019"></a><a class="code" href="Controller_8cc.html#bf4d81c4f089c809f460b9c9cac6a682">00019</a> <span class="preprocessor">#define NEXT_INSTANCE \</span>
<a name="l00020"></a>00020 <span class="preprocessor">    (++next_instance_ == 0) ? ++next_instance_ : next_instance_</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00022"></a><a class="code" href="Controller_8cc.html#275861c30b08ec652f25510a884ccd58">00022</a> <span class="preprocessor">#define LOG(_level, _args...) core_-&gt;print_log( \</span>
<a name="l00023"></a>00023 <span class="preprocessor">        "controller", BundleCore::_level, _args )</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="keyword">namespace </span>prophet
<a name="l00026"></a>00026 {
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 Controller::Controller(BundleCore* core, Repository* repository,
<a name="l00029"></a>00029                        ProphetParams* params)
<a name="l00030"></a>00030     : ExpirationHandler(<span class="stringliteral">"controller"</span>),
<a name="l00031"></a>00031       core_(core),
<a name="l00032"></a>00032       params_(params), 
<a name="l00033"></a>00033       max_route_(0),
<a name="l00034"></a>00034       nodes_(core,<span class="stringliteral">"local"</span>,<span class="keyword">true</span>), 
<a name="l00035"></a>00035       next_instance_(0),
<a name="l00036"></a>00036       timeout_(params_-&gt;hello_interval_ * 100),
<a name="l00037"></a>00037       repository_(repository)
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039     <span class="keywordflow">if</span> (core == NULL || params == NULL || repository == NULL)
<a name="l00040"></a>00040         <span class="comment">// uh, how to signal error state?</span>
<a name="l00041"></a>00041     {
<a name="l00042"></a>00042         <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_ERR,<span class="stringliteral">"constructor invoked with NULL parameter"</span>);
<a name="l00043"></a>00043         <span class="keywordflow">return</span>;
<a name="l00044"></a>00044     }
<a name="l00045"></a>00045 
<a name="l00046"></a>00046     <span class="keywordflow">if</span> (repository_-&gt;get_comparator()-&gt;qp() != params_-&gt;qp())
<a name="l00047"></a>00047     {
<a name="l00048"></a>00048         QueueComp* qc = <a class="code" href="structprophet_1_1QueuePolicy.html#0af83ec59196788050fff090528d61a7" title="Factory method for creating QueuePolicy comparator instance.">QueuePolicy::policy</a>(params_-&gt;qp(), &amp;stats_,
<a name="l00049"></a>00049                                             &amp;nodes_, params_-&gt;min_forward());
<a name="l00050"></a>00050         repository_-&gt;set_comparator(qc);
<a name="l00051"></a>00051     }
<a name="l00052"></a>00052 
<a name="l00053"></a>00053     <span class="comment">// set up reminder for aging out Nodes, Acks</span>
<a name="l00054"></a>00054     alarm_ = core_-&gt;create_alarm(<span class="keyword">this</span>,timeout_ * 100);
<a name="l00055"></a>00055 
<a name="l00056"></a>00056     <span class="comment">// set upper limit to growth of routing table</span>
<a name="l00057"></a>00057     max_route_ = params-&gt;max_table_size_;
<a name="l00058"></a>00058     nodes_.set_max_route(max_route_);
<a name="l00059"></a>00059 
<a name="l00060"></a>00060     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"constructor"</span>);
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 
<a name="l00063"></a>00063 Controller::~Controller()
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065     List::iterator i = list_.begin();
<a name="l00066"></a>00066     <span class="keywordflow">while</span> (i != list_.end())
<a name="l00067"></a>00067     {
<a name="l00068"></a>00068         <span class="keyword">delete</span> *i;
<a name="l00069"></a>00069         list_.erase(i++);
<a name="l00070"></a>00070     }
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 
<a name="l00073"></a>00073 <span class="keywordtype">bool</span>
<a name="l00074"></a>00074 Controller::find(<span class="keyword">const</span> Link* link, List::iterator&amp; i)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076     <span class="keywordflow">if</span> (link == NULL) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00077"></a>00077 
<a name="l00078"></a>00078     i = list_.begin();
<a name="l00079"></a>00079     <span class="keywordflow">while</span> (i != list_.end())
<a name="l00080"></a>00080         <span class="keywordflow">if</span> ((*i)-&gt;nexthop() == link)
<a name="l00081"></a>00081             <span class="keywordflow">break</span>; 
<a name="l00082"></a>00082         <span class="keywordflow">else</span>
<a name="l00083"></a>00083             i++;
<a name="l00084"></a>00084     <span class="keywordflow">return</span> (i != list_.end());
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086 
<a name="l00087"></a>00087 <span class="keywordtype">bool</span>
<a name="l00088"></a>00088 Controller::is_prophet_control(<span class="keyword">const</span> Bundle* b)<span class="keyword"> const</span>
<a name="l00089"></a>00089 <span class="keyword"></span>{
<a name="l00090"></a>00090     <span class="keywordflow">if</span> (b == NULL) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00091"></a>00091 
<a name="l00092"></a>00092     std::string str = b-&gt;destination_id();
<a name="l00093"></a>00093     <span class="keywordflow">return</span> (str.rfind(<span class="stringliteral">"/prophet"</span>) ==
<a name="l00094"></a>00094             str.length() - strlen(<span class="stringliteral">"/prophet"</span>));
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 
<a name="l00097"></a>00097 <span class="keywordtype">void</span>
<a name="l00098"></a>00098 Controller::new_neighbor(<span class="keyword">const</span> Link* link)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100     <span class="keywordflow">if</span> (link == NULL) <span class="keywordflow">return</span>;
<a name="l00101"></a>00101 
<a name="l00102"></a>00102     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"new_neighbor(%s)"</span>,link-&gt;remote_eid());
<a name="l00103"></a>00103 
<a name="l00104"></a>00104     <span class="comment">// first search for existing Encounter</span>
<a name="l00105"></a>00105     List::iterator i;
<a name="l00106"></a>00106     <span class="keywordflow">if</span> (find(link,i))
<a name="l00107"></a>00107     {
<a name="l00108"></a>00108         <span class="keywordflow">if</span> ((*i)-&gt;neighbor_gone())
<a name="l00109"></a>00109         {
<a name="l00110"></a>00110             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_INFO,<span class="stringliteral">"encounter-%d: neighbor gone"</span>,
<a name="l00111"></a>00111                     (*i)-&gt;local_instance());
<a name="l00112"></a>00112             <span class="keyword">delete</span> *i;
<a name="l00113"></a>00113             list_.erase(i);
<a name="l00114"></a>00114         }
<a name="l00115"></a>00115         <span class="keywordflow">else</span>
<a name="l00116"></a>00116         {
<a name="l00117"></a>00117             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"session exists (%s)"</span>,(*i)-&gt;name());
<a name="l00118"></a>00118             <span class="keywordflow">return</span>; <span class="comment">// do nothing</span>
<a name="l00119"></a>00119         }
<a name="l00120"></a>00120     }
<a name="l00121"></a>00121 
<a name="l00122"></a>00122     <span class="comment">// if none found, create a new Encounter</span>
<a name="l00123"></a>00123     Encounter* e = <span class="keyword">new</span> Encounter(link,<span class="keyword">this</span>,<a class="code" href="Controller_8cc.html#bf4d81c4f089c809f460b9c9cac6a682">NEXT_INSTANCE</a>);
<a name="l00124"></a>00124     <span class="keywordflow">if</span> (e-&gt;neighbor_gone())
<a name="l00125"></a>00125     {
<a name="l00126"></a>00126         <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_INFO,<span class="stringliteral">"encounter-%d: neighbor gone"</span>,
<a name="l00127"></a>00127                 e-&gt;local_instance());
<a name="l00128"></a>00128         <span class="keyword">delete</span> e;
<a name="l00129"></a>00129     }
<a name="l00130"></a>00130     <span class="keywordflow">else</span>
<a name="l00131"></a>00131         list_.push_back(e);
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 
<a name="l00134"></a>00134 <span class="keywordtype">void</span>
<a name="l00135"></a>00135 Controller::neighbor_gone(<span class="keyword">const</span> Link* link)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137     <span class="keywordflow">if</span> (link == NULL) <span class="keywordflow">return</span>;
<a name="l00138"></a>00138 
<a name="l00139"></a>00139     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"neighbor_gone(%s)"</span>,link-&gt;remote_eid());
<a name="l00140"></a>00140     <span class="comment">// search for Encounter</span>
<a name="l00141"></a>00141     <span class="comment">// if found, erase from list and delete from memory</span>
<a name="l00142"></a>00142     List::iterator i;
<a name="l00143"></a>00143     <span class="keywordflow">if</span> (find(link,i))
<a name="l00144"></a>00144     {
<a name="l00145"></a>00145         Encounter* e = (*i);
<a name="l00146"></a>00146         list_.erase(i);
<a name="l00147"></a>00147         <span class="keyword">delete</span> e;
<a name="l00148"></a>00148     }
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150 
<a name="l00151"></a>00151 <span class="keywordtype">bool</span>
<a name="l00152"></a>00152 Controller::accept_bundle(<span class="keyword">const</span> Bundle* b)
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154     <span class="keywordflow">if</span> (b == NULL) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00155"></a>00155 
<a name="l00156"></a>00156     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"accept_bundle(%u)"</span>,b-&gt;sequence_num());
<a name="l00157"></a>00157 
<a name="l00158"></a>00158     <span class="comment">// do we relay to other nodes?</span>
<a name="l00159"></a>00159     <span class="keywordflow">if</span> (params_-&gt;relay_node() == <span class="keyword">false</span>)
<a name="l00160"></a>00160     {
<a name="l00161"></a>00161         std::string eid(core_-&gt;local_eid());
<a name="l00162"></a>00162         <span class="comment">// if not, limit what bundles are accepted -- reject all unless</span>
<a name="l00163"></a>00163         <span class="comment">//    src or dst is local eid</span>
<a name="l00164"></a>00164         <span class="keywordflow">if</span> (!core_-&gt;is_route(eid,b-&gt;destination_id()) &amp;&amp;
<a name="l00165"></a>00165             !core_-&gt;is_route(eid,b-&gt;source_id()))
<a name="l00166"></a>00166         {
<a name="l00167"></a>00167             <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00168"></a>00168         }
<a name="l00169"></a>00169     }
<a name="l00170"></a>00170 
<a name="l00171"></a>00171     <span class="comment">// else accept </span>
<a name="l00172"></a>00172     <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174 
<a name="l00175"></a>00175 <span class="keywordtype">void</span>
<a name="l00176"></a>00176 Controller::handle_bundle_received(<span class="keyword">const</span> Bundle* b, <span class="keyword">const</span> Link* link)
<a name="l00177"></a>00177 {
<a name="l00178"></a>00178     <span class="keywordflow">if</span> (b == NULL) <span class="keywordflow">return</span>;
<a name="l00179"></a>00179 
<a name="l00180"></a>00180     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"handle_bundle_received(%d,%s)"</span>,
<a name="l00181"></a>00181             b-&gt;sequence_num(), (link == NULL) ? <span class="stringliteral">"NULL"</span> : link-&gt;remote_eid());
<a name="l00182"></a>00182 
<a name="l00183"></a>00183     <span class="keywordflow">if</span> (link == NULL)
<a name="l00184"></a>00184         <span class="keywordflow">return</span>;
<a name="l00185"></a>00185 
<a name="l00186"></a>00186     Encounter* e = NULL;
<a name="l00187"></a>00187     List::iterator i;
<a name="l00188"></a>00188     <span class="comment">// find the appropriate Encounter protocol handler</span>
<a name="l00189"></a>00189     <span class="keywordflow">if</span> (find(link,i))
<a name="l00190"></a>00190     {
<a name="l00191"></a>00191         e = *i;
<a name="l00192"></a>00192         <span class="keywordflow">if</span> (e-&gt;neighbor_gone()) 
<a name="l00193"></a>00193         {
<a name="l00194"></a>00194             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_INFO,<span class="stringliteral">"encounter-%d: neighbor gone"</span>,
<a name="l00195"></a>00195                     e-&gt;local_instance());
<a name="l00196"></a>00196             <span class="keyword">delete</span> e;
<a name="l00197"></a>00197             list_.erase(i);
<a name="l00198"></a>00198             e = NULL;
<a name="l00199"></a>00199         }
<a name="l00200"></a>00200     }
<a name="l00201"></a>00201     <span class="keywordflow">if</span> (e == NULL)
<a name="l00202"></a>00202     { 
<a name="l00203"></a>00203         <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_INFO,<span class="stringliteral">"unable to find session to assign bundle from %s"</span>,
<a name="l00204"></a>00204                 b-&gt;source_id().c_str());
<a name="l00205"></a>00205         <span class="keywordflow">return</span>;
<a name="l00206"></a>00206     }
<a name="l00207"></a>00207     <span class="comment">// handle the protocol message</span>
<a name="l00208"></a>00208     <span class="keywordflow">if</span> (is_prophet_control(b))
<a name="l00209"></a>00209     {
<a name="l00210"></a>00210         <span class="comment">// read contents from core's bundle payload into BundleBuffer</span>
<a name="l00211"></a>00211         <span class="keywordtype">size_t</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a> = b-&gt;size();
<a name="l00212"></a>00212         u_char* <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a> = <span class="keyword">new</span> u_char[len];
<a name="l00213"></a>00213         <span class="keywordflow">if</span> (!core_-&gt;read_bundle(b,buf,len))
<a name="l00214"></a>00214         {
<a name="l00215"></a>00215             <span class="keyword">delete</span> [] buf;
<a name="l00216"></a>00216             <span class="comment">// signal error state?!?</span>
<a name="l00217"></a>00217             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_ERR,<span class="stringliteral">"BundleCore failed to read bundle buffer"</span>);
<a name="l00218"></a>00218             core_-&gt;drop_bundle(b);
<a name="l00219"></a>00219             <span class="keywordflow">return</span>;
<a name="l00220"></a>00220         }
<a name="l00221"></a>00221         <span class="comment">// parse into ProphetTLV</span>
<a name="l00222"></a>00222         ProphetTLV* tlv = ProphetTLV::deserialize(b-&gt;source_id(),
<a name="l00223"></a>00223                 b-&gt;destination_id(), buf, len);
<a name="l00224"></a>00224 
<a name="l00225"></a>00225         <span class="keyword">delete</span> [] buf;
<a name="l00226"></a>00226 
<a name="l00227"></a>00227         <span class="keywordflow">if</span> (tlv == NULL)
<a name="l00228"></a>00228         {
<a name="l00229"></a>00229             <span class="comment">// signal error state?!?</span>
<a name="l00230"></a>00230             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_ERR,<span class="stringliteral">"ProphetTLV failed to deserialize"</span>);
<a name="l00231"></a>00231             core_-&gt;drop_bundle(b);
<a name="l00232"></a>00232             <span class="keywordflow">return</span>;
<a name="l00233"></a>00233         }
<a name="l00234"></a>00234 
<a name="l00235"></a>00235         e-&gt;receive_tlv(tlv);
<a name="l00236"></a>00236         <span class="keywordflow">if</span> (e-&gt;neighbor_gone())
<a name="l00237"></a>00237         {
<a name="l00238"></a>00238             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_INFO,<span class="stringliteral">"encounter-%d: neighbor gone"</span>,
<a name="l00239"></a>00239                     e-&gt;local_instance());
<a name="l00240"></a>00240             <span class="keyword">delete</span> e;
<a name="l00241"></a>00241             list_.erase(i);
<a name="l00242"></a>00242         }
<a name="l00243"></a>00243 
<a name="l00244"></a>00244         <span class="comment">// signal back to core that this bundle can be dropped now</span>
<a name="l00245"></a>00245         core_-&gt;drop_bundle(b);
<a name="l00246"></a>00246     }
<a name="l00247"></a>00247     <span class="keywordflow">else</span> 
<a name="l00248"></a>00248     {
<a name="l00249"></a>00249         <span class="comment">// decrement the request count</span>
<a name="l00250"></a>00250         e-&gt;handle_bundle_received(b);
<a name="l00251"></a>00251     } 
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253 
<a name="l00254"></a>00254 <span class="keywordtype">void</span>
<a name="l00255"></a>00255 Controller::handle_bundle_transmitted(<span class="keyword">const</span> Bundle* b, <span class="keyword">const</span> Link* l)
<a name="l00256"></a>00256 {
<a name="l00257"></a>00257     <span class="keywordflow">if</span> (b == NULL) <span class="keywordflow">return</span>;
<a name="l00258"></a>00258     <span class="keywordflow">if</span> (l == NULL) <span class="keywordflow">return</span>;
<a name="l00259"></a>00259     <span class="keywordflow">if</span> (is_prophet_control(b))
<a name="l00260"></a>00260     {
<a name="l00261"></a>00261         core()-&gt;drop_bundle(b);
<a name="l00262"></a>00262         <span class="keywordflow">return</span>;
<a name="l00263"></a>00263     }
<a name="l00264"></a>00264     stats_.update_stats(b,nodes_.p_value(l-&gt;remote_eid()));
<a name="l00265"></a>00265     repository_-&gt;change_priority(b);
<a name="l00266"></a>00266 }
<a name="l00267"></a>00267 
<a name="l00268"></a>00268 <span class="keywordtype">void</span>
<a name="l00269"></a>00269 Controller::ack(<span class="keyword">const</span> Bundle* b)
<a name="l00270"></a>00270 {
<a name="l00271"></a>00271     <span class="keywordflow">if</span> (b == NULL || is_prophet_control(b)) <span class="keywordflow">return</span>;
<a name="l00272"></a>00272 
<a name="l00273"></a>00273     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"ack(%u)"</span>, b-&gt;sequence_num());
<a name="l00274"></a>00274     <span class="comment">// insert ack, drop from stats, drop from bundles, drop from core</span>
<a name="l00275"></a>00275     Oracle::ack(b);
<a name="l00276"></a>00276 }
<a name="l00277"></a>00277 
<a name="l00278"></a>00278 <span class="keywordtype">void</span>
<a name="l00279"></a>00279 Controller::set_queue_policy()
<a name="l00280"></a>00280 {
<a name="l00281"></a>00281     <span class="comment">// read current values to decide whether to create new comparator</span>
<a name="l00282"></a>00282     QueueComp* qc = <span class="keyword">const_cast&lt;</span>QueueComp*<span class="keyword">&gt;</span>(repository_-&gt;get_comparator());
<a name="l00283"></a>00283 
<a name="l00284"></a>00284     <span class="keywordflow">if</span> (qc-&gt;qp() != params_-&gt;qp() || params_-&gt;min_forward() != qc-&gt;min_fwd_)
<a name="l00285"></a>00285     {
<a name="l00286"></a>00286         <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"set_queue_policy (%s -&gt; %s)"</span>,
<a name="l00287"></a>00287                 QueuePolicy::qp_to_str(qc-&gt;qp()),
<a name="l00288"></a>00288                 QueuePolicy::qp_to_str(params_-&gt;qp()));
<a name="l00289"></a>00289 
<a name="l00290"></a>00290         qc = QueuePolicy::policy(params_-&gt;qp(), &amp;stats_, &amp;nodes_,
<a name="l00291"></a>00291                                  params_-&gt;min_forward());
<a name="l00292"></a>00292         <span class="comment">// repository_ cleans up previous qc object</span>
<a name="l00293"></a>00293         repository_-&gt;set_comparator(qc);
<a name="l00294"></a>00294     }
<a name="l00295"></a>00295 }
<a name="l00296"></a>00296 
<a name="l00297"></a>00297 <span class="keywordtype">void</span>
<a name="l00298"></a>00298 Controller::set_hello_interval()
<a name="l00299"></a>00299 {
<a name="l00300"></a>00300     <span class="keywordflow">if</span> (timeout_ != ((u_int)(params_-&gt;hello_interval_ * 100)))
<a name="l00301"></a>00301     {
<a name="l00302"></a>00302         <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"set_hello_interval (%u -&gt; %u)"</span>,
<a name="l00303"></a>00303                 timeout_/100, params_-&gt;hello_interval_);
<a name="l00304"></a>00304 
<a name="l00305"></a>00305         timeout_ = params_-&gt;hello_interval_ * 100;
<a name="l00306"></a>00306         <span class="comment">// alert the active peering sessions to parameter change</span>
<a name="l00307"></a>00307         <span class="keywordflow">for</span> (List::iterator i = list_.begin(); i != list_.end(); i++)
<a name="l00308"></a>00308             (*i)-&gt;hello_interval_changed();
<a name="l00309"></a>00309     }
<a name="l00310"></a>00310 }
<a name="l00311"></a>00311 
<a name="l00312"></a>00312 <span class="keywordtype">void</span>
<a name="l00313"></a>00313 Controller::set_max_route()
<a name="l00314"></a>00314 {
<a name="l00315"></a>00315     <span class="keywordflow">if</span> (max_route_ != ((u_int)(params_-&gt;max_table_size_)))
<a name="l00316"></a>00316     {
<a name="l00317"></a>00317         <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"set_max_route (%u -&gt; %u)"</span>,
<a name="l00318"></a>00318                 max_route_, params_-&gt;max_table_size_);
<a name="l00319"></a>00319         nodes_.set_max_route(max_route_);
<a name="l00320"></a>00320     }
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322 
<a name="l00323"></a>00323 <span class="keywordtype">void</span>
<a name="l00324"></a>00324 Controller::handle_timeout()
<a name="l00325"></a>00325 {
<a name="l00326"></a>00326     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"handle_timeout"</span>);
<a name="l00327"></a>00327 
<a name="l00328"></a>00328     acks_.expire();
<a name="l00329"></a>00329     nodes_.age_nodes();
<a name="l00330"></a>00330     nodes_.truncate(params_-&gt;epsilon());
<a name="l00331"></a>00331 
<a name="l00332"></a>00332     <span class="comment">// schedule new alarm</span>
<a name="l00333"></a>00333     alarm_ = core_-&gt;create_alarm(<span class="keyword">this</span>,timeout_ * 100);
<a name="l00334"></a>00334 
<a name="l00335"></a>00335     List::iterator i = list_.begin();
<a name="l00336"></a>00336     <span class="keywordflow">while</span> (i != list_.end())
<a name="l00337"></a>00337     {
<a name="l00338"></a>00338         <span class="keywordflow">if</span> ((*i)-&gt;neighbor_gone())
<a name="l00339"></a>00339         {
<a name="l00340"></a>00340             <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_INFO,<span class="stringliteral">"encounter-%d: neighbor gone"</span>,
<a name="l00341"></a>00341                     (*i)-&gt;local_instance());
<a name="l00342"></a>00342             <span class="keyword">delete</span> *i;
<a name="l00343"></a>00343             list_.erase(i++);
<a name="l00344"></a>00344         }
<a name="l00345"></a>00345         <span class="keywordflow">else</span>
<a name="l00346"></a>00346             i++;
<a name="l00347"></a>00347     }
<a name="l00348"></a>00348 }
<a name="l00349"></a>00349 
<a name="l00350"></a>00350 <span class="keywordtype">void</span>
<a name="l00351"></a>00351 Controller::shutdown()
<a name="l00352"></a>00352 {
<a name="l00353"></a>00353     <a class="code" href="BundleOffer_8cc.html#259e390b81bb640af4691776b15a9116">LOG</a>(LOG_DEBUG,<span class="stringliteral">"shutdown"</span>);
<a name="l00354"></a>00354     <span class="keywordflow">if</span> (alarm_ != NULL &amp;&amp; alarm_-&gt;pending())
<a name="l00355"></a>00355         <span class="comment">// host's timer implementation will clean this up</span>
<a name="l00356"></a>00356         alarm_-&gt;cancel(); 
<a name="l00357"></a>00357     <span class="keywordflow">while</span> (! list_.empty())
<a name="l00358"></a>00358     {
<a name="l00359"></a>00359         <span class="keyword">delete</span> list_.front();
<a name="l00360"></a>00360         list_.pop_front();
<a name="l00361"></a>00361     }
<a name="l00362"></a>00362 }
<a name="l00363"></a>00363 
<a name="l00364"></a>00364 }; <span class="comment">// namespace prophet</span>
</pre></div></div>
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