examples/S60CppExamples/ClientServerAsync/doc/timeserversession_8cpp-source.html
00001 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 00002 <html> 00003 00004 <head> 00005 <meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> 00006 <title>timeserversession.cpp Source File</title> 00007 <link href="style.css" rel="stylesheet" type="text/css"> 00008 </head> 00009 00010 <table border="0" width="100%" height="8" bgcolor="#eeeeee"> 00011 <tr> <td width="100%" height="1"><b><font size="2" color="#000000" face="Arial, Helvetica, sans-serif"><strong><a name=Top></a> 00012 S60 5th Edition SDK </strong></font></b><br><i>Example Applications Guide</i></td></tr> </table> 00013 <!-- Generated by Doxygen 1.4.5 --> 00014 <div class="tabs"> 00015 <ul> 00016 <li><a href="index.html"><span>Main Page</span></a></li> 00017 <li><a href="annotated.html"><span>Classes</span></a></li> 00018 <li id="current"><a href="files.html"><span>Files</span></a></li> 00019 </ul></div> 00020 <h1>timeserversession.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> 00021 <a name="l00002"></a>00002 <span class="comment">* ==============================================================================</span> 00022 <a name="l00003"></a>00003 <span class="comment">* Name : timeserversession.cpp</span> 00023 <a name="l00004"></a>00004 <span class="comment">* Part of : CSAsync</span> 00024 <a name="l00005"></a>00005 <span class="comment">* Interface :</span> 00025 <a name="l00006"></a>00006 <span class="comment">* Description :</span> 00026 <a name="l00007"></a>00007 <span class="comment">* Version :</span> 00027 <a name="l00008"></a>00008 <span class="comment">*</span> 00028 <a name="l00009"></a>00009 <span class="comment">* Copyright (c) 2004-2006 Nokia Corporation.</span> 00029 <a name="l00010"></a>00010 <span class="comment">* This material, including documentation and any related</span> 00030 <a name="l00011"></a>00011 <span class="comment">* computer programs, is protected by copyright controlled by</span> 00031 <a name="l00012"></a>00012 <span class="comment">* Nokia Corporation.</span> 00032 <a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span> 00033 <a name="l00014"></a>00014 <span class="comment">*/</span> 00034 <a name="l00015"></a>00015 00035 <a name="l00016"></a>00016 00036 <a name="l00017"></a>00017 <span class="comment">// INCLUDE FILES</span> 00037 <a name="l00018"></a>00018 <span class="preprocessor">#include <e32math.h></span> 00038 <a name="l00019"></a>00019 00039 <a name="l00020"></a>00020 <span class="preprocessor">#include "ClientServerCommon.h"</span> 00040 <a name="l00021"></a>00021 <span class="preprocessor">#include "TimeServerSession.h"</span> 00041 <a name="l00022"></a>00022 00042 <a name="l00023"></a>00023 <span class="comment">// FUNCTION PROTOTYPES</span> 00043 <a name="l00024"></a>00024 <span class="keyword">static</span> TInt StartServer(); 00044 <a name="l00025"></a>00025 <span class="keyword">static</span> TInt CreateServerProcess(); 00045 <a name="l00026"></a>00026 00046 <a name="l00027"></a>00027 <span class="comment">// ========================= MEMBER FUNCTIONS ==================================</span> 00047 <a name="l00028"></a>00028 00048 <a name="l00029"></a>00029 <span class="comment">// -----------------------------------------------------------------------------</span> 00049 <a name="l00030"></a>00030 <span class="comment">// RTimeServerSession::RTimeServerSession()</span> 00050 <a name="l00031"></a>00031 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</span> 00051 <a name="l00032"></a>00032 <span class="comment">// -----------------------------------------------------------------------------</span> 00052 <a name="l00033"></a>00033 <span class="comment">//</span> 00053 <a name="l00034"></a><a class="code" href="class_r_time_server_session.html#d8a4b16d15242f1f1a1e7e2585bf81a6">00034</a> <a class="code" href="class_r_time_server_session.html#d8a4b16d15242f1f1a1e7e2585bf81a6">RTimeServerSession::RTimeServerSession</a>() 00054 <a name="l00035"></a>00035 : RSessionBase(), iTimeBuffer( NULL, 0, 0 ) 00055 <a name="l00036"></a>00036 { 00056 <a name="l00037"></a>00037 <span class="comment">// No implementation required</span> 00057 <a name="l00038"></a>00038 } 00058 <a name="l00039"></a>00039 00059 <a name="l00040"></a>00040 <span class="comment">// -----------------------------------------------------------------------------</span> 00060 <a name="l00041"></a>00041 <span class="comment">// RTimeServerSession::Connect()</span> 00061 <a name="l00042"></a>00042 <span class="comment">// Connects to the server and create a session.</span> 00062 <a name="l00043"></a>00043 <span class="comment">// -----------------------------------------------------------------------------</span> 00063 <a name="l00044"></a>00044 <span class="comment">//</span> 00064 <a name="l00045"></a><a class="code" href="class_r_time_server_session.html#0a20867f2777f1db7349df290a5e6112">00045</a> TInt <a class="code" href="class_r_time_server_session.html#0a20867f2777f1db7349df290a5e6112">RTimeServerSession::Connect</a>() 00065 <a name="l00046"></a>00046 { 00066 <a name="l00047"></a>00047 TInt error = ::StartServer(); 00067 <a name="l00048"></a>00048 00068 <a name="l00049"></a>00049 <span class="keywordflow">if</span> ( KErrNone == error ) 00069 <a name="l00050"></a>00050 { 00070 <a name="l00051"></a>00051 error = CreateSession( KTimeServerName, 00071 <a name="l00052"></a>00052 <a class="code" href="class_r_time_server_session.html#30dc24843f42888ea13e6093f6318f37">Version</a>(), 00072 <a name="l00053"></a>00053 KDefaultMessageSlots ); 00073 <a name="l00054"></a>00054 } 00074 <a name="l00055"></a>00055 <span class="keywordflow">return</span> error; 00075 <a name="l00056"></a>00056 } 00076 <a name="l00057"></a>00057 00077 <a name="l00058"></a>00058 <span class="comment">// -----------------------------------------------------------------------------</span> 00078 <a name="l00059"></a>00059 <span class="comment">// RTimeServerSession::Version()</span> 00079 <a name="l00060"></a>00060 <span class="comment">// Gets the version number.</span> 00080 <a name="l00061"></a>00061 <span class="comment">// -----------------------------------------------------------------------------</span> 00081 <a name="l00062"></a>00062 <span class="comment">//</span> 00082 <a name="l00063"></a><a class="code" href="class_r_time_server_session.html#30dc24843f42888ea13e6093f6318f37">00063</a> TVersion <a class="code" href="class_r_time_server_session.html#30dc24843f42888ea13e6093f6318f37">RTimeServerSession::Version</a>()<span class="keyword"> const</span> 00083 <a name="l00064"></a>00064 <span class="keyword"> </span>{ 00084 <a name="l00065"></a>00065 <span class="keywordflow">return</span>( TVersion( KTimeServMajorVersionNumber, 00085 <a name="l00066"></a>00066 KTimeServMinorVersionNumber, 00086 <a name="l00067"></a>00067 KTimeServBuildVersionNumber ) ); 00087 <a name="l00068"></a>00068 } 00088 <a name="l00069"></a>00069 00089 <a name="l00070"></a>00070 <span class="comment">// -----------------------------------------------------------------------------</span> 00090 <a name="l00071"></a>00071 <span class="comment">// RTimeServerSession::RequestTime()</span> 00091 <a name="l00072"></a>00072 <span class="comment">// Issues a request for the time to the server.</span> 00092 <a name="l00073"></a>00073 <span class="comment">// -----------------------------------------------------------------------------</span> 00093 <a name="l00074"></a>00074 <span class="comment">//</span> 00094 <a name="l00075"></a><a class="code" href="class_r_time_server_session.html#0e65b7c45b7af042183f1c5525cfcc1b">00075</a> <span class="keywordtype">void</span> <a class="code" href="class_r_time_server_session.html#0e65b7c45b7af042183f1c5525cfcc1b">RTimeServerSession::RequestTime</a>( TTime& aTime, TRequestStatus& aStatus ) 00095 <a name="l00076"></a>00076 { 00096 <a name="l00077"></a>00077 <a class="code" href="class_r_time_server_session.html#828f90acd9ecd7a6283a9226001e3921">iTimeBuffer</a>.Set( reinterpret_cast<TUint8*>( &aTime ), <span class="keyword">sizeof</span>( aTime ), 00097 <a name="l00078"></a>00078 <span class="keyword">sizeof</span>( aTime ) ); 00098 <a name="l00079"></a>00079 00099 <a name="l00080"></a>00080 <span class="comment">// Package message arguments before sending to the server</span> 00100 <a name="l00081"></a>00081 TIpcArgs args( &<a class="code" href="class_r_time_server_session.html#828f90acd9ecd7a6283a9226001e3921">iTimeBuffer</a> ); 00101 <a name="l00082"></a>00082 00102 <a name="l00083"></a>00083 <span class="comment">// This call completes immediately, however the server will not</span> 00103 <a name="l00084"></a>00084 <span class="comment">// complete the request until later, so don't pass any local</span> 00104 <a name="l00085"></a>00085 <span class="comment">// descriptors as they will be out of scope by the time the server</span> 00105 <a name="l00086"></a>00086 <span class="comment">// attempts to write to them</span> 00106 <a name="l00087"></a>00087 SendReceive( ETimeServRequestTime, args, aStatus ); 00107 <a name="l00088"></a>00088 } 00108 <a name="l00089"></a>00089 00109 <a name="l00090"></a>00090 <span class="comment">// -----------------------------------------------------------------------------</span> 00110 <a name="l00091"></a>00091 <span class="comment">// RTimeServerSession::CancelRequestTime()</span> 00111 <a name="l00092"></a>00092 <span class="comment">// Cancels any outstanding request to the server.</span> 00112 <a name="l00093"></a>00093 <span class="comment">// -----------------------------------------------------------------------------</span> 00113 <a name="l00094"></a><a class="code" href="class_r_time_server_session.html#52a5f2cddd36f215fea9c11e32ab88b8">00094</a> <span class="keywordtype">void</span> <a class="code" href="class_r_time_server_session.html#52a5f2cddd36f215fea9c11e32ab88b8">RTimeServerSession::CancelRequestTime</a>()<span class="keyword"> const</span> 00114 <a name="l00095"></a>00095 <span class="keyword"> </span>{ 00115 <a name="l00096"></a>00096 SendReceive( ETimeServCancelRequestTime, TIpcArgs(NULL) ); 00116 <a name="l00097"></a>00097 } 00117 <a name="l00098"></a>00098 00118 <a name="l00099"></a>00099 <span class="comment">// ============================= OTHER FUNCTIONS ===============================</span> 00119 <a name="l00100"></a>00100 00120 <a name="l00101"></a>00101 <span class="comment">// -----------------------------------------------------------------------------</span> 00121 <a name="l00102"></a>00102 <span class="comment">// StartServer()</span> 00122 <a name="l00103"></a>00103 <span class="comment">// Starts the server if it is not already running</span> 00123 <a name="l00104"></a>00104 <span class="comment">// -----------------------------------------------------------------------------</span> 00124 <a name="l00105"></a>00105 <span class="comment">//</span> 00125 <a name="l00106"></a>00106 <span class="keyword">static</span> TInt StartServer() 00126 <a name="l00107"></a>00107 { 00127 <a name="l00108"></a>00108 TInt result; 00128 <a name="l00109"></a>00109 00129 <a name="l00110"></a>00110 TFindServer findTimeServer( KTimeServerName ); 00130 <a name="l00111"></a>00111 TFullName name; 00131 <a name="l00112"></a>00112 00132 <a name="l00113"></a>00113 result = findTimeServer.Next( name ); 00133 <a name="l00114"></a>00114 <span class="keywordflow">if</span> ( result == KErrNone ) 00134 <a name="l00115"></a>00115 { 00135 <a name="l00116"></a>00116 <span class="comment">// Server already running</span> 00136 <a name="l00117"></a>00117 <span class="keywordflow">return</span> KErrNone; 00137 <a name="l00118"></a>00118 } 00138 <a name="l00119"></a>00119 00139 <a name="l00120"></a>00120 RSemaphore semaphore; 00140 <a name="l00121"></a>00121 result = semaphore.CreateGlobal( KTimeServerSemaphoreName, 0 ); 00141 <a name="l00122"></a>00122 <span class="keywordflow">if</span> ( result != KErrNone ) 00142 <a name="l00123"></a>00123 { 00143 <a name="l00124"></a>00124 <span class="keywordflow">return</span> result; 00144 <a name="l00125"></a>00125 } 00145 <a name="l00126"></a>00126 00146 <a name="l00127"></a>00127 result = CreateServerProcess(); 00147 <a name="l00128"></a>00128 <span class="keywordflow">if</span> ( result != KErrNone ) 00148 <a name="l00129"></a>00129 { 00149 <a name="l00130"></a>00130 <span class="keywordflow">return</span> result; 00150 <a name="l00131"></a>00131 } 00151 <a name="l00132"></a>00132 00152 <a name="l00133"></a>00133 semaphore.Wait(); 00153 <a name="l00134"></a>00134 semaphore.Close(); 00154 <a name="l00135"></a>00135 00155 <a name="l00136"></a>00136 <span class="keywordflow">return</span> KErrNone; 00156 <a name="l00137"></a>00137 } 00157 <a name="l00138"></a>00138 00158 <a name="l00139"></a>00139 <span class="comment">// -----------------------------------------------------------------------------</span> 00159 <a name="l00140"></a>00140 <span class="comment">// CreateServerProcess()</span> 00160 <a name="l00141"></a>00141 <span class="comment">// Creates a server process</span> 00161 <a name="l00142"></a>00142 <span class="comment">// -----------------------------------------------------------------------------</span> 00162 <a name="l00143"></a>00143 <span class="comment">//</span> 00163 <a name="l00144"></a>00144 <span class="keyword">static</span> TInt CreateServerProcess() 00164 <a name="l00145"></a>00145 { 00165 <a name="l00146"></a>00146 TInt result; 00166 <a name="l00147"></a>00147 00167 <a name="l00148"></a>00148 <span class="keyword">const</span> TUidType serverUid( KNullUid, KNullUid, KServerUid3 ); 00168 <a name="l00149"></a>00149 00169 <a name="l00150"></a>00150 RProcess server; 00170 <a name="l00151"></a>00151 00171 <a name="l00152"></a>00152 result = server.Create( KTimeServerFilename, KNullDesC, serverUid ); 00172 <a name="l00153"></a>00153 00173 <a name="l00154"></a>00154 <span class="keywordflow">if</span> ( result != KErrNone ) 00174 <a name="l00155"></a>00155 { 00175 <a name="l00156"></a>00156 <span class="keywordflow">return</span> result; 00176 <a name="l00157"></a>00157 } 00177 <a name="l00158"></a>00158 00178 <a name="l00159"></a>00159 server.Resume(); 00179 <a name="l00160"></a>00160 server.Close(); 00180 <a name="l00161"></a>00161 00181 <a name="l00162"></a>00162 <span class="keywordflow">return</span> KErrNone; 00182 <a name="l00163"></a>00163 } 00183 <a name="l00164"></a>00164 00184 <a name="l00165"></a>00165 00185 <a name="l00166"></a>00166 <span class="comment">// End of File</span> 00186 </pre></div><hr> 00187 00188 <table x-use-null-cells 00189 style="x-cell-content-align: top; 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