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<h1>EventChannel.cc</h1><a href="a00093.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Package : omniEvents</span>
<a name="l00002"></a>00002 <span class="comment">// EventChannel.cc Created : 2003/12/04</span>
<a name="l00003"></a>00003 <span class="comment">// Author : Alex Tingle</span>
<a name="l00004"></a>00004 <span class="comment">//</span>
<a name="l00005"></a>00005 <span class="comment">// Copyright (C) 2003-2005 Alex Tingle.</span>
<a name="l00006"></a>00006 <span class="comment">//</span>
<a name="l00007"></a>00007 <span class="comment">// This file is part of the omniEvents application.</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// omniEvents is free software; you can redistribute it and/or</span>
<a name="l00010"></a>00010 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00011"></a>00011 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00012"></a>00012 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment">//</span>
<a name="l00014"></a>00014 <span class="comment">// omniEvents is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00017"></a>00017 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00018"></a>00018 <span class="comment">//</span>
<a name="l00019"></a>00019 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00020"></a>00020 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00021"></a>00021 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="a00094.html">EventChannel.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="a00085.html">ConsumerAdmin.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="a00138.html">SupplierAdmin.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="a00114.html">omniEventsLog.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="a00116.html">Orb.h</a>"</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include <list></span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="keyword">namespace </span>OmniEvents {
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="comment">// CORBA interface methods</span>
<a name="l00035"></a><a class="code" href="a00046.html#a0">00035</a> CosEventChannelAdmin::ConsumerAdmin_ptr <a class="code" href="a00046.html#a0">EventChannel_i::for_consumers</a>()
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 <span class="keywordflow">if</span>(!<a class="code" href="a00046.html#r2">_consumerAdmin</a> || <a class="code" href="a00046.html#r4">_shutdownRequested</a>)
<a name="l00038"></a>00038 <span class="keywordflow">throw</span> CORBA::OBJECT_NOT_EXIST();
<a name="l00039"></a>00039 <span class="keywordflow">return</span> <a class="code" href="a00046.html#r2">_consumerAdmin</a>->_this();
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042
<a name="l00043"></a><a class="code" href="a00046.html#a1">00043</a> CosEventChannelAdmin::SupplierAdmin_ptr <a class="code" href="a00046.html#a1">EventChannel_i::for_suppliers</a>()
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keywordflow">if</span>(!<a class="code" href="a00046.html#r1">_supplierAdmin</a> || <a class="code" href="a00046.html#r4">_shutdownRequested</a>)
<a name="l00046"></a>00046 <span class="keywordflow">throw</span> CORBA::OBJECT_NOT_EXIST();
<a name="l00047"></a>00047 <span class="keywordflow">return</span> <a class="code" href="a00046.html#r1">_supplierAdmin</a>->_this();
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049
<a name="l00050"></a>00050
<a name="l00051"></a><a class="code" href="a00046.html#a2">00051</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#a2">EventChannel_i::destroy</a>()
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r4">_shutdownRequested</a>)
<a name="l00054"></a>00054 <span class="keywordflow">throw</span> CORBA::OBJECT_NOT_EXIST();
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// Prevent further incoming connections.</span>
<a name="l00057"></a>00057 <a class="code" href="a00046.html#r4">_shutdownRequested</a>=<span class="keyword">true</span>;
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <a class="code" href="a00116.html#a2">DB</a>(5,<span class="stringliteral">"EventChannel_i::destroy()"</span>)
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="comment">// Send disconnect messages to connected clients.</span>
<a name="l00062"></a>00062 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r2">_consumerAdmin</a>)
<a name="l00063"></a>00063 <a class="code" href="a00046.html#r2">_consumerAdmin</a>-><a class="code" href="a00043.html#a6">disconnect</a>();
<a name="l00064"></a>00064 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r1">_supplierAdmin</a>)
<a name="l00065"></a>00065 <a class="code" href="a00046.html#r1">_supplierAdmin</a>-><a class="code" href="a00076.html#a5">disconnect</a>();
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068
<a name="l00069"></a><a class="code" href="a00046.html#a4">00069</a> <a class="code" href="a00046.html#a4">EventChannel_i::EventChannel_i</a>(<a class="code" href="a00048.html">EventChannelStore</a>* store)
<a name="l00070"></a>00070 : <a class="code" href="a00073.html">Servant</a>(PortableServer::POA::_nil()),
<a name="l00071"></a>00071 _eventChannelStore(store),
<a name="l00072"></a>00072 _consumerAdmin(NULL),
<a name="l00073"></a>00073 _supplierAdmin(NULL),
<a name="l00074"></a>00074 _poaManager(),
<a name="l00075"></a>00075 _shutdownRequested(false),
<a name="l00076"></a>00076 _properties(),
<a name="l00077"></a>00077 _mapper(NULL),
<a name="l00078"></a>00078 _lock(),
<a name="l00079"></a>00079 _refCount(1)
<a name="l00080"></a>00080 {}
<a name="l00081"></a>00081
<a name="l00082"></a>00082
<a name="l00083"></a><a class="code" href="a00046.html#a6">00083</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#a6">EventChannel_i::activate</a>(
<a name="l00084"></a>00084 <span class="keyword">const</span> <span class="keywordtype">char</span>* channelName,
<a name="l00085"></a>00085 <span class="keyword">const</span> <a class="code" href="a00060.html">PersistNode</a>* node
<a name="l00086"></a>00086 )
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="comment">// The order of these various initialization methods is very important.</span>
<a name="l00089"></a>00089 <span class="comment">// I've documented dependencies as 'REQUIRES' comments.</span>
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <a class="code" href="a00046.html#d1">createPoa</a>(channelName);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordflow">if</span>(node)
<a name="l00094"></a>00094 <a class="code" href="a00046.html#r5">_properties</a>.<a class="code" href="a00060.html#o1">_attr</a>=node-><a class="code" href="a00060.html#o1">_attr</a>;
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// REQUIRES: _properties</span>
<a name="l00097"></a>00097 <a class="code" href="a00046.html#r2">_consumerAdmin</a>=<span class="keyword">new</span> <a class="code" href="a00043.html">ConsumerAdmin_i</a>(*<span class="keyword">this</span>,<a class="code" href="a00073.html#p0">_poa</a>);
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// REQUIRES: _consumerAdmin, _properties</span>
<a name="l00100"></a>00100 <a class="code" href="a00046.html#r1">_supplierAdmin</a>=<span class="keyword">new</span> <a class="code" href="a00076.html">SupplierAdmin_i</a>(*<span class="keyword">this</span>,<a class="code" href="a00073.html#p0">_poa</a>);
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keywordflow">if</span>(node)
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 <a class="code" href="a00060.html">PersistNode</a>* saNode =node-><a class="code" href="a00060.html#a13">child</a>(<span class="stringliteral">"SupplierAdmin"</span>);
<a name="l00105"></a>00105 <span class="keywordflow">if</span>(saNode)
<a name="l00106"></a>00106 <a class="code" href="a00046.html#r1">_supplierAdmin</a>-><a class="code" href="a00076.html#a6">reincarnate</a>(*saNode);
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <a class="code" href="a00060.html">PersistNode</a>* caNode =node-><a class="code" href="a00060.html#a13">child</a>(<span class="stringliteral">"ConsumerAdmin"</span>);
<a name="l00109"></a>00109 <span class="keywordflow">if</span>(caNode)
<a name="l00110"></a>00110 <a class="code" href="a00046.html#r2">_consumerAdmin</a>-><a class="code" href="a00043.html#a7">reincarnate</a>(*caNode);
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <a class="code" href="a00073.html#b1">activateObjectWithId</a>(<span class="stringliteral">"EventChannel"</span>);
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="comment">// Remove the constructor's reference. This object will now be destroyed when</span>
<a name="l00116"></a>00116 <span class="comment">// the POA releases it.</span>
<a name="l00117"></a>00117 <a class="code" href="a00046.html#a11">_remove_ref</a>();
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// REQUIRES: activate() ...since it uses _this().</span>
<a name="l00120"></a>00120 <a class="code" href="a00046.html#d0">setInsName</a>(<a class="code" href="a00046.html#r5">_properties</a>.<a class="code" href="a00060.html#a11">attrString</a>(<span class="stringliteral">"InsName"</span>));
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">// Start the channel's thread running.</span>
<a name="l00123"></a>00123 start_undetached();
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126
<a name="l00127"></a><a class="code" href="a00046.html#a5">00127</a> <a class="code" href="a00046.html#a5">EventChannel_i::~EventChannel_i</a>()
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 <a class="code" href="a00116.html#a2">DB</a>(20,<span class="stringliteral">"~EventChannel_i()"</span>)
<a name="l00130"></a>00130 <span class="comment">// Destroy the mapper object, even when the EventChannel is being shut down</span>
<a name="l00131"></a>00131 <span class="comment">// without a call to destroy(). This can happen if the channel is</span>
<a name="l00132"></a>00132 <span class="comment">// implemented through libomniEvents - the channel could be shut down and</span>
<a name="l00133"></a>00133 <span class="comment">// later reincarnated in the same process. The Mapper's lifecycle should</span>
<a name="l00134"></a>00134 <span class="comment">// match that of the EventChannel.</span>
<a name="l00135"></a>00135 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r6">_mapper</a>)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 <a class="code" href="a00046.html#r6">_mapper</a>-><a class="code" href="a00054.html#a2">destroy</a>();
<a name="l00138"></a>00138 <a class="code" href="a00046.html#r6">_mapper</a>=NULL;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r2">_consumerAdmin</a>)
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 <a class="code" href="a00046.html#r2">_consumerAdmin</a>->_remove_ref();
<a name="l00143"></a>00143 <a class="code" href="a00046.html#r2">_consumerAdmin</a>=NULL;
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r1">_supplierAdmin</a>)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 <a class="code" href="a00046.html#r1">_supplierAdmin</a>->_remove_ref();
<a name="l00148"></a>00148 <a class="code" href="a00046.html#r1">_supplierAdmin</a>=NULL;
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
<a name="l00152"></a>00152
<a name="l00153"></a><a class="code" href="a00046.html#a8">00153</a> <span class="keywordtype">void</span>* <a class="code" href="a00046.html#a8">EventChannel_i::run_undetached</a>(<span class="keywordtype">void</span>*)
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 <span class="comment">// Ensure that activate() is called before start()/run().</span>
<a name="l00156"></a>00156 assert(!CORBA::is_nil(<a class="code" href="a00073.html#p0">_poa</a>));
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keyword">const</span> <span class="keywordtype">char</span>* action=<span class="stringliteral">""</span>;
<a name="l00159"></a>00159 <span class="keywordflow">try</span>
<a name="l00160"></a>00160 {
<a name="l00161"></a>00161 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r0">_eventChannelStore</a>)
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163 action=<span class="stringliteral">"add this object to the store"</span>;
<a name="l00164"></a>00164 <a class="code" href="a00046.html#r0">_eventChannelStore</a>-><a class="code" href="a00048.html#a2">insert</a>(<span class="keyword">this</span>);
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keywordflow">if</span>(<a class="code" href="a00056.html#e0">omniEventsLog::exists</a>())
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 action=<span class="stringliteral">"create this object in the persistency database"</span>;
<a name="l00170"></a>00170 <a class="code" href="a00080.html">WriteLock</a> log;
<a name="l00171"></a>00171 <a class="code" href="a00046.html#a12">output</a>(log.<a class="code" href="a00080.html#o0">os</a>);
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="comment">// Process events until the channel is destroyed.</span>
<a name="l00175"></a>00175 action=<span class="stringliteral">"run main loop"</span>;
<a name="l00176"></a>00176 <a class="code" href="a00046.html#a9">mainLoop</a>();
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r0">_eventChannelStore</a>)
<a name="l00179"></a>00179 {
<a name="l00180"></a>00180 action=<span class="stringliteral">"remove this object from the store"</span>;
<a name="l00181"></a>00181 <a class="code" href="a00046.html#r0">_eventChannelStore</a>-><a class="code" href="a00048.html#a3">erase</a>(<span class="keyword">this</span>);
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r4">_shutdownRequested</a>)
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 <span class="keywordflow">if</span>(<a class="code" href="a00056.html#e0">omniEventsLog::exists</a>())
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 action=<span class="stringliteral">"remove record from persistency database"</span>;
<a name="l00189"></a>00189 CORBA::String_var poaName =_poa->the_name();
<a name="l00190"></a>00190 <a class="code" href="a00080.html">WriteLock</a> log;
<a name="l00191"></a>00191 log.<a class="code" href="a00080.html#o0">os</a><<<span class="stringliteral">"-ecf/"</span><<poaName.in()<<<span class="charliteral">'\n'</span>;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193 action=<span class="stringliteral">"destroy POA"</span>;
<a name="l00194"></a>00194 _poa->destroy(
<a name="l00195"></a>00195 CORBA::Boolean(1) <span class="comment">/* etherealize_objects */</span>,
<a name="l00196"></a>00196 CORBA::Boolean(0) <span class="comment">/* wait_for_completion */</span>
<a name="l00197"></a>00197 );
<a name="l00198"></a>00198 _poa=PortableServer::POA::_nil();
<a name="l00199"></a>00199
<a name="l00200"></a>00200 } <span class="comment">// end if(_shutdownRequested)</span>
<a name="l00201"></a>00201
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 <span class="keywordflow">catch</span>(PortableServer::POAManager::AdapterInactive& ex) {
<a name="l00204"></a>00204 <a class="code" href="a00116.html#a2">DB</a>(0,<span class="stringliteral">"EventChannel_i::run_undetached() - failed to "</span><<action<<
<a name="l00205"></a>00205 <span class="stringliteral">", POA deactivated from the outside."</span>)
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207 <span class="keywordflow">catch</span> (CORBA::SystemException& ex) {
<a name="l00208"></a>00208 <a class="code" href="a00116.html#a2">DB</a>(0,<span class="stringliteral">"EventChannel_i::run_undetached() - failed to "</span><<action<<
<a name="l00209"></a>00209 <span class="stringliteral">", System exception: "</span><<ex._name()<<<span class="stringliteral">" ("</span><<<a class="code" href="a00116.html#a3">NP_MINORSTRING</a>(ex)<<<span class="stringliteral">")"</span>)
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211 <span class="keywordflow">catch</span> (CORBA::Exception& ex) {
<a name="l00212"></a>00212 <a class="code" href="a00116.html#a2">DB</a>(0,<span class="stringliteral">"EventChannel_i::run_undetached() - failed to "</span><<action<<
<a name="l00213"></a>00213 <span class="stringliteral">", CORBA exception: "</span><<ex._name())
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="comment">// Thread now exits, and this object is deleted.</span>
<a name="l00217"></a>00217 <span class="keywordflow">return</span> NULL;
<a name="l00218"></a>00218 }
<a name="l00219"></a>00219
<a name="l00220"></a>00220
<a name="l00221"></a><a class="code" href="a00046.html#a9">00221</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#a9">EventChannel_i::mainLoop</a>()
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 <a class="code" href="a00046.html#r3">_poaManager</a>->activate();
<a name="l00224"></a>00224 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> localCyclePeriod_ns=<a class="code" href="a00046.html#a18">cyclePeriod_ns</a>();
<a name="l00225"></a>00225 <span class="keywordflow">while</span>(<a class="code" href="a00046.html#r8">_refCount</a>>0 && !<a class="code" href="a00046.html#r4">_shutdownRequested</a>)
<a name="l00226"></a>00226 {
<a name="l00227"></a>00227 <span class="comment">//</span>
<a name="l00228"></a>00228 <span class="comment">// TRANSFER PHASE - transfer events from SupplierAdmin to ConsumerAdmin.</span>
<a name="l00229"></a>00229 <a class="code" href="a00046.html#r3">_poaManager</a>->hold_requests(CORBA::Boolean(1) <span class="comment">/* wait_for_completion */</span>);
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r4">_shutdownRequested</a>) <span class="keywordflow">break</span>;
<a name="l00232"></a>00232
<a name="l00233"></a>00233 list<CORBA::Any*> events;
<a name="l00234"></a>00234 <a class="code" href="a00046.html#r1">_supplierAdmin</a>-><a class="code" href="a00076.html#a4">collect</a>(events);
<a name="l00235"></a>00235 <a class="code" href="a00046.html#r2">_consumerAdmin</a>-><a class="code" href="a00043.html#a4">send</a>(events);
<a name="l00236"></a>00236 assert(events.empty());
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <a class="code" href="a00046.html#r3">_poaManager</a>->activate();
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <span class="comment">//</span>
<a name="l00241"></a>00241 <span class="comment">// COMMUNICATION PHASE - talk with clients' suppliers & consumers.</span>
<a name="l00242"></a>00242 <span class="comment">// Note: On Linux the resolution of nanosleep is a huge 10ms.</span>
<a name="l00243"></a>00243 omni_thread::sleep(0,localCyclePeriod_ns);
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247
<a name="l00248"></a><a class="code" href="a00046.html#a10">00248</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#a10">EventChannel_i::_add_ref</a>()
<a name="l00249"></a>00249 {
<a name="l00250"></a>00250 <span class="preprocessor">#if OMNIEVENTS__DEBUG_REF_COUNTS</span>
<a name="l00251"></a>00251 <span class="preprocessor"></span> <a class="code" href="a00116.html#a2">DB</a>(20,<span class="stringliteral">"EventChannel_i::_add_ref()"</span>)
<a name="l00252"></a>00252 #endif
<a name="l00253"></a>00253 omni_mutex_lock pause(<a class="code" href="a00046.html#r7">_lock</a>);
<a name="l00254"></a>00254 ++<a class="code" href="a00046.html#r8">_refCount</a>;
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257
<a name="l00258"></a><a class="code" href="a00046.html#a11">00258</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#a11">EventChannel_i::_remove_ref</a>()
<a name="l00259"></a>00259 {
<a name="l00260"></a>00260 <span class="preprocessor">#if OMNIEVENTS__DEBUG_REF_COUNTS</span>
<a name="l00261"></a>00261 <span class="preprocessor"></span> <a class="code" href="a00116.html#a2">DB</a>(20,<span class="stringliteral">"EventChannel_i::_remove_ref()"</span>)
<a name="l00262"></a>00262 #endif
<a name="l00263"></a>00263 <span class="keywordtype">int</span> myref;
<a name="l00264"></a>00264 {
<a name="l00265"></a>00265 omni_mutex_lock pause(<a class="code" href="a00046.html#r7">_lock</a>);
<a name="l00266"></a>00266 myref = --<a class="code" href="a00046.html#r8">_refCount</a>;
<a name="l00267"></a>00267 }
<a name="l00268"></a>00268
<a name="l00269"></a>00269 <span class="keywordflow">if</span>(myref<0)
<a name="l00270"></a>00270 {
<a name="l00271"></a>00271 <a class="code" href="a00116.html#a2">DB</a>(2,<span class="stringliteral">"EventChannel has negative ref count! "</span><<myref)
<a name="l00272"></a>00272 }
<a name="l00273"></a>00273 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(myref==0)
<a name="l00274"></a>00274 {
<a name="l00275"></a>00275 <a class="code" href="a00116.html#a2">DB</a>(15,<span class="stringliteral">"EventChannel has zero ref count -- shutdown."</span>)
<a name="l00276"></a>00276 join(NULL);
<a name="l00277"></a>00277 }
<a name="l00278"></a>00278 }
<a name="l00279"></a>00279
<a name="l00280"></a>00280
<a name="l00281"></a><a class="code" href="a00046.html#a12">00281</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#a12">EventChannel_i::output</a>(ostream& os)
<a name="l00282"></a>00282 {
<a name="l00283"></a>00283 CORBA::String_var poaName =<a class="code" href="a00073.html#p0">_poa</a>->the_name();
<a name="l00284"></a>00284 string name =string(<span class="stringliteral">"ecf/"</span>)+poaName.in();
<a name="l00285"></a>00285 <a class="code" href="a00046.html#r5">_properties</a>.<a class="code" href="a00060.html#a3">output</a>(os,name);
<a name="l00286"></a>00286 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r1">_supplierAdmin</a>)
<a name="l00287"></a>00287 <a class="code" href="a00046.html#r1">_supplierAdmin</a>-><a class="code" href="a00076.html#a7">output</a>(os);
<a name="l00288"></a>00288 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r2">_consumerAdmin</a>)
<a name="l00289"></a>00289 <a class="code" href="a00046.html#r2">_consumerAdmin</a>-><a class="code" href="a00043.html#a8">output</a>(os);
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291
<a name="l00292"></a>00292
<a name="l00293"></a><a class="code" href="a00046.html#d0">00293</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#d0">EventChannel_i::setInsName</a>(<span class="keyword">const</span> string v)
<a name="l00294"></a>00294 {
<a name="l00295"></a>00295 <a class="code" href="a00054.html">Mapper</a>* newMapper =NULL;
<a name="l00296"></a>00296 <span class="keywordflow">try</span>
<a name="l00297"></a>00297 {
<a name="l00298"></a>00298
<a name="l00299"></a>00299 <span class="comment">// If _insName is set, then create a mapper object to allow clients to</span>
<a name="l00300"></a>00300 <span class="comment">// find this object with a `corbaloc' string.</span>
<a name="l00301"></a>00301 <span class="keywordflow">if</span>(!v.empty())
<a name="l00302"></a>00302 {
<a name="l00303"></a>00303 <span class="comment">// !! Throws when there is already an object named 'v' in the INSPOA.</span>
<a name="l00304"></a>00304 CORBA::Object_var obj( _this() );
<a name="l00305"></a>00305 newMapper=<span class="keyword">new</span> <a class="code" href="a00054.html">Mapper</a>(v.c_str(),obj.in());
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307 <span class="comment">// Deactivate the old _mapper object.</span>
<a name="l00308"></a>00308 <span class="keywordflow">if</span>(<a class="code" href="a00046.html#r6">_mapper</a>)
<a name="l00309"></a>00309 <a class="code" href="a00046.html#r6">_mapper</a>-><a class="code" href="a00054.html#a2">destroy</a>();
<a name="l00310"></a>00310 <a class="code" href="a00046.html#r6">_mapper</a>=newMapper;
<a name="l00311"></a>00311
<a name="l00312"></a>00312 }
<a name="l00313"></a>00313 <span class="keywordflow">catch</span>(...)
<a name="l00314"></a>00314 {
<a name="l00315"></a>00315 <span class="comment">// Can't use an auto_ptr, because MS VC++ 6 has no auto_ptr::reset()</span>
<a name="l00316"></a>00316 <span class="keyword">delete</span> newMapper;
<a name="l00317"></a>00317 <span class="keywordflow">throw</span>;
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320
<a name="l00321"></a>00321
<a name="l00322"></a><a class="code" href="a00046.html#d1">00322</a> <span class="keywordtype">void</span> <a class="code" href="a00046.html#d1">EventChannel_i::createPoa</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* channelName)
<a name="l00323"></a>00323 {
<a name="l00324"></a>00324 <span class="keyword">using</span> <span class="keyword">namespace </span>PortableServer;
<a name="l00325"></a>00325 POA_ptr p=<a class="code" href="a00059.html#e0">Orb::inst</a>().<a class="code" href="a00059.html#o1">_RootPOA</a>.in();
<a name="l00326"></a>00326
<a name="l00327"></a>00327 <span class="comment">// POLICIES:</span>
<a name="l00328"></a>00328 <span class="comment">// Lifespan =PERSISTENT // we can persist</span>
<a name="l00329"></a>00329 <span class="comment">// Assignment =USER_ID // write our own oid</span>
<a name="l00330"></a>00330 <span class="comment">// Uniqueness =[default] UNIQUE_ID // one servant per object</span>
<a name="l00331"></a>00331 <span class="comment">// ImplicitActivation=[default] IMPLICIT_ACTIVATION // auto activation</span>
<a name="l00332"></a>00332 <span class="comment">// RequestProcessing =[default] USE_ACTIVE_OBJECT_MAP_ONLY</span>
<a name="l00333"></a>00333 <span class="comment">// ServantRetention =[default] RETAIN // stateless POA</span>
<a name="l00334"></a>00334 <span class="comment">// Thread =SINGLE_THREAD_MODEL // keep it simple</span>
<a name="l00335"></a>00335
<a name="l00336"></a>00336 CORBA::PolicyList policies;
<a name="l00337"></a>00337 policies.length(3);
<a name="l00338"></a>00338 policies[0]=p->create_lifespan_policy(PERSISTENT);
<a name="l00339"></a>00339 policies[1]=p->create_id_assignment_policy(USER_ID);
<a name="l00340"></a>00340 policies[2]=p->create_thread_policy(SINGLE_THREAD_MODEL);
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="keywordflow">try</span> <span class="comment">// finally</span>
<a name="l00343"></a>00343 {
<a name="l00344"></a>00344 <span class="keywordflow">try</span>
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 <span class="comment">// Create a new POA (and new POAManager) for this channel.</span>
<a name="l00347"></a>00347 <span class="comment">// The POAManager will be used for all of this channel's POAs.</span>
<a name="l00348"></a>00348 <a class="code" href="a00073.html#p0">_poa</a>=p->create_POA(channelName,POAManager::_nil(),policies);
<a name="l00349"></a>00349 <a class="code" href="a00046.html#r3">_poaManager</a>=<a class="code" href="a00073.html#p0">_poa</a>->the_POAManager();
<a name="l00350"></a>00350 }
<a name="l00351"></a>00351 <span class="keywordflow">catch</span>(POA::AdapterAlreadyExists& ex) <span class="comment">// create_POA</span>
<a name="l00352"></a>00352 {
<a name="l00353"></a>00353 <a class="code" href="a00116.html#a2">DB</a>(0,<span class="stringliteral">"EventChannel_i::createPoa() - POA::AdapterAlreadyExists"</span>)
<a name="l00354"></a>00354 <span class="keywordflow">throw</span>;
<a name="l00355"></a>00355 }
<a name="l00356"></a>00356 <span class="keywordflow">catch</span>(POA::InvalidPolicy& ex) <span class="comment">// create_POA</span>
<a name="l00357"></a>00357 {
<a name="l00358"></a>00358 <a class="code" href="a00116.html#a2">DB</a>(0,<span class="stringliteral">"EventChannel_i::createPoa() - POA::InvalidPolicy: "</span><<ex.index)
<a name="l00359"></a>00359 <span class="keywordflow">throw</span>;
<a name="l00360"></a>00360 }
<a name="l00361"></a>00361 }
<a name="l00362"></a>00362 <span class="keywordflow">catch</span>(...) <span class="comment">// finally</span>
<a name="l00363"></a>00363 {
<a name="l00364"></a>00364 <span class="comment">// Destroy the policy objects (Not strictly necessary in omniORB)</span>
<a name="l00365"></a>00365 <span class="keywordflow">for</span>(CORBA::ULong i=0; i<policies.length(); ++i)
<a name="l00366"></a>00366 policies[i]->destroy();
<a name="l00367"></a>00367 <span class="keywordflow">throw</span>;
<a name="l00368"></a>00368 }
<a name="l00369"></a>00369
<a name="l00370"></a>00370 <span class="comment">// Destroy the policy objects (Not strictly necessary in omniORB)</span>
<a name="l00371"></a>00371 <span class="keywordflow">for</span>(CORBA::ULong i=0; i<policies.length(); ++i)
<a name="l00372"></a>00372 policies[i]->destroy();
<a name="l00373"></a>00373 }
<a name="l00374"></a>00374
<a name="l00375"></a>00375
<a name="l00376"></a>00376 <span class="comment">//</span>
<a name="l00377"></a>00377 <span class="comment">// class EventChannelStore</span>
<a name="l00378"></a>00378 <span class="comment">//</span>
<a name="l00379"></a>00379
<a name="l00380"></a>00380
<a name="l00381"></a><a class="code" href="a00048.html#a0">00381</a> <a class="code" href="a00048.html#a0">EventChannelStore::EventChannelStore</a>()
<a name="l00382"></a>00382 :_channels(),_lock()
<a name="l00383"></a>00383 {}
<a name="l00384"></a>00384
<a name="l00385"></a><a class="code" href="a00048.html#a1">00385</a> <a class="code" href="a00048.html#a1">EventChannelStore::~EventChannelStore</a>()
<a name="l00386"></a>00386 {
<a name="l00387"></a>00387 <span class="comment">// ?? IMPLEMENT ME</span>
<a name="l00388"></a>00388 }
<a name="l00389"></a>00389
<a name="l00390"></a><a class="code" href="a00048.html#a2">00390</a> <span class="keywordtype">void</span> <a class="code" href="a00048.html#a2">EventChannelStore::insert</a>(<a class="code" href="a00046.html">EventChannel_i</a>* channel)
<a name="l00391"></a>00391 {
<a name="l00392"></a>00392 omni_mutex_lock l(<a class="code" href="a00048.html#r1">_lock</a>);
<a name="l00393"></a>00393 <span class="keywordtype">bool</span> insertOK =<a class="code" href="a00048.html#r0">_channels</a>.insert(channel).second;
<a name="l00394"></a>00394 <span class="keywordflow">if</span>(!insertOK)
<a name="l00395"></a>00395 <a class="code" href="a00116.html#a2">DB</a>(2,<span class="stringliteral">"Attempted to store an EventChannel, when it is already stored."</span>);
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397
<a name="l00398"></a><a class="code" href="a00048.html#a3">00398</a> <span class="keywordtype">void</span> <a class="code" href="a00048.html#a3">EventChannelStore::erase</a>(<a class="code" href="a00046.html">EventChannel_i</a>* channel)
<a name="l00399"></a>00399 {
<a name="l00400"></a>00400 omni_mutex_lock l(<a class="code" href="a00048.html#r1">_lock</a>);
<a name="l00401"></a>00401 set<EventChannel_i*>::iterator pos =<a class="code" href="a00048.html#r0">_channels</a>.find(channel);
<a name="l00402"></a>00402 <span class="keywordflow">if</span>(pos==<a class="code" href="a00048.html#r0">_channels</a>.end())
<a name="l00403"></a>00403 <a class="code" href="a00116.html#a2">DB</a>(2,<span class="stringliteral">"Failed to erase unknown EventChannel."</span>)
<a name="l00404"></a>00404 <span class="keywordflow">else</span>
<a name="l00405"></a>00405 <a class="code" href="a00048.html#r0">_channels</a>.erase(pos);
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a><a class="code" href="a00048.html#a4">00408</a> <span class="keywordtype">void</span> <a class="code" href="a00048.html#a4">EventChannelStore::output</a>(ostream &os)
<a name="l00409"></a>00409 {
<a name="l00410"></a>00410 omni_mutex_lock l(<a class="code" href="a00048.html#r1">_lock</a>);
<a name="l00411"></a>00411 <span class="keywordflow">for</span>(set<EventChannel_i*>::iterator i=<a class="code" href="a00048.html#r0">_channels</a>.begin();
<a name="l00412"></a>00412 i!=<a class="code" href="a00048.html#r0">_channels</a>.end();
<a name="l00413"></a>00413 ++i)
<a name="l00414"></a>00414 {
<a name="l00415"></a>00415 (*i)->output(os);
<a name="l00416"></a>00416 }
<a name="l00417"></a>00417 }
<a name="l00418"></a>00418
<a name="l00419"></a>00419
<a name="l00420"></a>00420 }; <span class="comment">// end namespace OmniEvents</span>
<a name="l00421"></a>00421
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Aug 26 20:56:14 2005 for OmniEvents by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.3-20050530 </small></address>
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