Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_client_server_sync_2server_2src_2timeserver_8cpp_source.html
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<h1>examples/S60CppExamples/ClientServerSync/server/src/timeserver.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span>
<a name="l00003"></a>00003 <span class="comment">* Name : timeserver.cpp</span>
<a name="l00004"></a>00004 <span class="comment">* Part of : CSSync</span>
<a name="l00005"></a>00005 <span class="comment">* Interface :</span>
<a name="l00006"></a>00006 <span class="comment">* Description :</span>
<a name="l00007"></a>00007 <span class="comment">* Version :</span>
<a name="l00008"></a>00008 <span class="comment">*</span>
<a name="l00009"></a>00009 <span class="comment">* Copyright (c) 2006 Nokia Corporation.</span>
<a name="l00010"></a>00010 <span class="comment">* This material, including documentation and any related</span>
<a name="l00011"></a>00011 <span class="comment">* computer programs, is protected by copyright controlled by</span>
<a name="l00012"></a>00012 <span class="comment">* Nokia Corporation.</span>
<a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span>
<a name="l00014"></a>00014 <span class="comment">*/</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="comment">// INCLUDE FILES</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <eikstart.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <e32svr.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <e32math.h></span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include "TimeServer.h"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "ClientServerCommon.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "TimeSession.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="comment">// ========================= MEMBER FUNCTIONS ==================================</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00029"></a>00029 <span class="comment">// CTimeServer::NewL()</span>
<a name="l00030"></a>00030 <span class="comment">// Two-phased constructor.</span>
<a name="l00031"></a>00031 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00032"></a>00032 <span class="comment">//</span>
<a name="l00033"></a>00033 <a class="code" href="class_c_time_server.html">CTimeServer</a>* <a class="code" href="class_c_time_server.html#a59b4f2ad9c1b3a2c689b9ffa1cd11179">CTimeServer::NewL</a>()
<a name="l00034"></a>00034 {
<a name="l00035"></a>00035 <a class="code" href="class_c_time_server.html">CTimeServer</a>* timeServer = <a class="code" href="class_c_time_server.html#a599b3712d5d1f6e9e2017508c689d2e5">CTimeServer::NewLC</a>();
<a name="l00036"></a>00036 CleanupStack::Pop( timeServer );
<a name="l00037"></a>00037 <span class="keywordflow">return</span> timeServer;
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00041"></a>00041 <span class="comment">// CTimeServer::NewLC()</span>
<a name="l00042"></a>00042 <span class="comment">// Two-phased constructor.</span>
<a name="l00043"></a>00043 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00044"></a>00044 <span class="comment">//</span>
<a name="l00045"></a>00045 <a class="code" href="class_c_time_server.html">CTimeServer</a>* <a class="code" href="class_c_time_server.html#a599b3712d5d1f6e9e2017508c689d2e5">CTimeServer::NewLC</a>()
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047 <a class="code" href="class_c_time_server.html">CTimeServer</a>* timeServer = <span class="keyword">new</span> ( ELeave ) <a class="code" href="class_c_time_server.html">CTimeServer</a>( EPriorityNormal );
<a name="l00048"></a>00048 CleanupStack::PushL( timeServer );
<a name="l00049"></a>00049 timeServer->ConstructL();
<a name="l00050"></a>00050 <span class="keywordflow">return</span> timeServer;
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00054"></a>00054 <span class="comment">// CTimeServer::ConstructL()</span>
<a name="l00055"></a>00055 <span class="comment">// Symbian 2nd phase constructor can leave.</span>
<a name="l00056"></a>00056 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00057"></a>00057 <span class="comment">//</span>
<a name="l00058"></a>00058 <span class="keywordtype">void</span> CTimeServer::ConstructL()
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 StartL( KTimeServerName );
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00064"></a>00064 <span class="comment">// CTimeServer::CTimeServer()</span>
<a name="l00065"></a>00065 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span>
<a name="l00066"></a>00066 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00067"></a>00067 <span class="comment">//</span>
<a name="l00068"></a>00068 CTimeServer::CTimeServer( TInt aPriority )
<a name="l00069"></a>00069 : CServer2( aPriority )
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 <span class="comment">// Implementation not required</span>
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00075"></a>00075 <span class="comment">// CTimeServer::NewSessionL()</span>
<a name="l00076"></a>00076 <span class="comment">// Creates a time server session.</span>
<a name="l00077"></a>00077 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00078"></a>00078 <span class="comment">//</span>
<a name="l00079"></a>00079 CSession2* CTimeServer::NewSessionL( <span class="keyword">const</span> TVersion& aVersion,
<a name="l00080"></a>00080 <span class="keyword">const</span> RMessage2& <span class="comment">/*aMessage*/</span> )<span class="keyword"> const</span>
<a name="l00081"></a>00081 <span class="keyword"> </span>{
<a name="l00082"></a>00082 <span class="comment">// Check we are the right version</span>
<a name="l00083"></a>00083 <span class="keywordflow">if</span> ( !User::QueryVersionSupported( TVersion( KTimeServMajorVersionNumber,
<a name="l00084"></a>00084 KTimeServMinorVersionNumber,
<a name="l00085"></a>00085 KTimeServBuildVersionNumber ),
<a name="l00086"></a>00086 aVersion ) )
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 User::Leave( KErrNotSupported );
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// Make new session </span>
<a name="l00092"></a>00092 <span class="keywordflow">return</span> <a class="code" href="class_c_time_server.html#a59b4f2ad9c1b3a2c689b9ffa1cd11179">CTimeServerSession::NewL</a>( *const_cast<CTimeServer*> ( <span class="keyword">this</span> ) );
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00096"></a>00096 <span class="comment">// CTimeServer::IncrementSessions()</span>
<a name="l00097"></a>00097 <span class="comment">// Increments the count of the active sessions for this server.</span>
<a name="l00098"></a>00098 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00099"></a>00099 <span class="comment">//</span>
<a name="l00100"></a>00100 <span class="keywordtype">void</span> <a class="code" href="class_c_time_server.html#a9fb3c4c32d4050bc6f3b8ede0199bb7e">CTimeServer::IncrementSessions</a>()
<a name="l00101"></a>00101 {
<a name="l00102"></a>00102 iSessionCount++;
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00106"></a>00106 <span class="comment">// CTimeServer::DecrementSessions()</span>
<a name="l00107"></a>00107 <span class="comment">// Decrements the count of the active sessions for this server.</span>
<a name="l00108"></a>00108 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00109"></a>00109 <span class="comment">//</span>
<a name="l00110"></a>00110 <span class="keywordtype">void</span> <a class="code" href="class_c_time_server.html#ad2b51a53e39f5844cce161bb912e0b7a">CTimeServer::DecrementSessions</a>()
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 iSessionCount--;
<a name="l00113"></a>00113 <span class="keywordflow">if</span> ( iSessionCount <= 0 )
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 CActiveScheduler::Stop();
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00120"></a>00120 <span class="comment">// CTimeServer::RunError()</span>
<a name="l00121"></a>00121 <span class="comment">// Processes any errors.</span>
<a name="l00122"></a>00122 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00123"></a>00123 <span class="comment">//</span>
<a name="l00124"></a>00124 TInt <a class="code" href="class_c_time_server.html#a0f86707c23aa97a861ca8fe8e239194c">CTimeServer::RunError</a>( TInt aError )
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordflow">if</span> ( aError == KErrBadDescriptor )
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128 <span class="comment">// A bad descriptor error implies a badly programmed client,</span>
<a name="l00129"></a>00129 <span class="comment">// so panic it; otherwise report the error to the client</span>
<a name="l00130"></a>00130 PanicClient( Message(), EBadDescriptor );
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 <span class="keywordflow">else</span>
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 Message().Complete( aError );
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">// The leave will result in an early return from CServer::RunL(), skipping</span>
<a name="l00138"></a>00138 <span class="comment">// the call to request another message. So do that now in order to keep the</span>
<a name="l00139"></a>00139 <span class="comment">// server running.</span>
<a name="l00140"></a>00140 ReStart();
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordflow">return</span> KErrNone; <span class="comment">// Handled the error fully</span>
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00146"></a>00146 <span class="comment">// CTimeServer::PanicClient()</span>
<a name="l00147"></a>00147 <span class="comment">// Panics the client.</span>
<a name="l00148"></a>00148 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00149"></a>00149 <span class="comment">//</span>
<a name="l00150"></a>00150 <span class="keywordtype">void</span> CTimeServer::PanicClient( <span class="keyword">const</span> RMessage2& aMessage, TTimeServPanic aPanic )
<a name="l00151"></a>00151 {
<a name="l00152"></a>00152 aMessage.Panic( KCSSyncServer, aPanic );
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00156"></a>00156 <span class="comment">// CTimeServer::PanicServer()</span>
<a name="l00157"></a>00157 <span class="comment">// Panics the server.</span>
<a name="l00158"></a>00158 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00159"></a>00159 <span class="comment">//</span>
<a name="l00160"></a>00160 <span class="keywordtype">void</span> CTimeServer::PanicServer( TTimeServPanic aPanic )
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 User::Panic( KCSSyncServer, aPanic );
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00166"></a>00166 <span class="comment">// CTimeServer::ThreadFunctionL()</span>
<a name="l00167"></a>00167 <span class="comment">// Second stage startup for the server thread.</span>
<a name="l00168"></a>00168 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00169"></a>00169 <span class="comment">//</span>
<a name="l00170"></a>00170 <span class="keywordtype">void</span> CTimeServer::ThreadFunctionL()
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="comment">// Construct active scheduler</span>
<a name="l00173"></a>00173 CActiveScheduler* activeScheduler = <span class="keyword">new</span> ( ELeave ) CActiveScheduler;
<a name="l00174"></a>00174 CleanupStack::PushL( activeScheduler );
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="comment">// Install active scheduler</span>
<a name="l00177"></a>00177 <span class="comment">// We don't need to check whether an active scheduler is already installed</span>
<a name="l00178"></a>00178 <span class="comment">// as this is a new thread, so there won't be one</span>
<a name="l00179"></a>00179 CActiveScheduler::Install( activeScheduler );
<a name="l00180"></a>00180
<a name="l00181"></a>00181 <span class="comment">// Construct our server</span>
<a name="l00182"></a>00182 <a class="code" href="class_c_time_server.html#a599b3712d5d1f6e9e2017508c689d2e5">CTimeServer::NewLC</a>(); <span class="comment">// Anonymous</span>
<a name="l00183"></a>00183
<a name="l00184"></a>00184 RSemaphore semaphore;
<a name="l00185"></a>00185 User::LeaveIfError( semaphore.OpenGlobal( KTimeServerSemaphoreName ) );
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="comment">// Semaphore opened ok</span>
<a name="l00188"></a>00188 semaphore.Signal();
<a name="l00189"></a>00189 semaphore.Close();
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="comment">// Start handling requests</span>
<a name="l00192"></a>00192 CActiveScheduler::Start();
<a name="l00193"></a>00193
<a name="l00194"></a>00194 CleanupStack::PopAndDestroy( 2, activeScheduler ); <span class="comment">//Anonymous CTimeServer</span>
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00198"></a>00198 <span class="comment">// CTimeServer::ThreadFunction()</span>
<a name="l00199"></a>00199 <span class="comment">// Main function for the server thread.</span>
<a name="l00200"></a>00200 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00201"></a>00201 <span class="comment">//</span>
<a name="l00202"></a>00202 TInt <a class="code" href="class_c_time_server.html#af9f826864fde246cd6c53af89563ba70">CTimeServer::ThreadFunction</a>( TAny* <span class="comment">/*aNone*/</span> )
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 CTrapCleanup* cleanupStack = CTrapCleanup::New();
<a name="l00205"></a>00205 <span class="keywordflow">if</span> ( !( cleanupStack ) )
<a name="l00206"></a>00206 {
<a name="l00207"></a>00207 PanicServer( <a class="code" href="secureserver_8h.html#a091a5ad2956fb84c4470a59010a0d4efa36f3ebda4e94aedb5817599162216e69">ECreateTrapCleanup</a> );
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209
<a name="l00210"></a>00210 TRAPD( err, ThreadFunctionL() );
<a name="l00211"></a>00211 <span class="keywordflow">if</span> ( err != KErrNone )
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213 PanicServer( ESrvCreateServer );
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="keyword">delete</span> cleanupStack;
<a name="l00217"></a>00217 cleanupStack = NULL;
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="keywordflow">return</span> KErrNone;
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00223"></a>00223 <span class="comment">// E32Main()</span>
<a name="l00224"></a>00224 <span class="comment">// Provides the API for the operating system to start the executable.</span>
<a name="l00225"></a>00225 <span class="comment">// Returns the address of the function to be called.</span>
<a name="l00226"></a>00226 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00227"></a>00227 <span class="comment">//</span>
<a name="l00228"></a>00228 TInt E32Main()
<a name="l00229"></a>00229 {
<a name="l00230"></a>00230 <span class="keywordflow">return</span> <a class="code" href="class_c_time_server.html#af9f826864fde246cd6c53af89563ba70">CTimeServer::ThreadFunction</a>( NULL );
<a name="l00231"></a>00231 }
<a name="l00232"></a>00232
<a name="l00233"></a>00233
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="comment">// End of File</span>
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