Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_client_server_sync_2client_2src_2timeserversession_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>TB9.2 Example Applications: examples/S60CppExamples/ClientServerSync/client/src/timeserversession.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.6.2 -->
<h1>examples/S60CppExamples/ClientServerSync/client/src/timeserversession.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 : timeserversession.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 <span class="comment">// INCLUDE FILES</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <e32math.h></span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#include "ClientServerCommon.h"</span>
<a name="l00020"></a>00020 <span class="preprocessor">#include "TimeServerSession.h"</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="comment">// FUNCTION PROTOTYPES</span>
<a name="l00023"></a>00023 <span class="keyword">static</span> TInt StartServer();
<a name="l00024"></a>00024 <span class="keyword">static</span> TInt CreateServerProcess();
<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">// RTimeServerSession::RTimeServerSession()</span>
<a name="l00030"></a>00030 <span class="comment">// C++ default constructor can NOT contain any code, that might leave.</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_r_time_server_session.html#a1b1d498de395c8c97e6e74e5b17a463f">RTimeServerSession::RTimeServerSession</a>()
<a name="l00034"></a>00034 : RSessionBase()
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <span class="comment">// No implementation required</span>
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00040"></a>00040 <span class="comment">// RTimeServerSession::Connect()</span>
<a name="l00041"></a>00041 <span class="comment">// Connects to the server and create a session.</span>
<a name="l00042"></a>00042 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00043"></a>00043 <span class="comment">//</span>
<a name="l00044"></a>00044 TInt <a class="code" href="class_r_time_server_session.html#a21ea524d4ff3c0622035d60c8a4c5f62">RTimeServerSession::Connect</a>()
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 TInt error = ::StartServer();
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordflow">if</span> ( KErrNone == error )
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 error = CreateSession( KTimeServerName,
<a name="l00051"></a>00051 <a class="code" href="class_r_time_server_session.html#a2c3e9d93ee99036775f915b5c9a0ae77">Version</a>(),
<a name="l00052"></a>00052 KDefaultMessageSlots );
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054 <span class="keywordflow">return</span> error;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00058"></a>00058 <span class="comment">// RTimeServerSession::Version()</span>
<a name="l00059"></a>00059 <span class="comment">// Gets the version number.</span>
<a name="l00060"></a>00060 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00061"></a>00061 <span class="comment">//</span>
<a name="l00062"></a>00062 TVersion <a class="code" href="class_r_time_server_session.html#a2c3e9d93ee99036775f915b5c9a0ae77">RTimeServerSession::Version</a>()<span class="keyword"> const</span>
<a name="l00063"></a>00063 <span class="keyword"> </span>{
<a name="l00064"></a>00064 <span class="keywordflow">return</span>( TVersion( KTimeServMajorVersionNumber,
<a name="l00065"></a>00065 KTimeServMinorVersionNumber,
<a name="l00066"></a>00066 KTimeServBuildVersionNumber ) );
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00070"></a>00070 <span class="comment">// RTimeServerSession::RequestTime()</span>
<a name="l00071"></a>00071 <span class="comment">// Issues a request for the time to the server.</span>
<a name="l00072"></a>00072 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00073"></a>00073 <span class="comment">//</span>
<a name="l00074"></a><a class="code" href="class_r_time_server_session.html#a9204e678b108676f3efeb2eb720d12cd">00074</a> <span class="keywordtype">void</span> <a class="code" href="class_r_time_server_session.html#a456203c7ad8889a4753222e98173ff00">RTimeServerSession::RequestTime</a>( TTime& aTime )<span class="keyword"> const</span>
<a name="l00075"></a>00075 <span class="keyword"> </span>{
<a name="l00076"></a>00076 <span class="comment">// Create descriptor to enable copying data between client and server.</span>
<a name="l00077"></a>00077 <span class="comment">// Note: This can be local since this is a synchronous call.</span>
<a name="l00078"></a>00078 <span class="comment">// Note : Using TPtr8 since this is binary information.</span>
<a name="l00079"></a>00079 TPtr8 descriptor( reinterpret_cast<TUint8*>( &aTime ), <span class="keyword">sizeof</span>( aTime ),
<a name="l00080"></a>00080 <span class="keyword">sizeof</span>( aTime ) );
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="comment">// Package message arguments before sending to the server</span>
<a name="l00083"></a>00083 TIpcArgs args( &descriptor );
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">// This call waits for the server to complete the request before</span>
<a name="l00086"></a>00086 <span class="comment">// proceeding. When it returns, the new time will be in aTime.</span>
<a name="l00087"></a>00087 SendReceive( ETimeServRequestTime, args );
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// ============================= OTHER FUNCTIONS ===============================</span>
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00094"></a>00094 <span class="comment">// StartServer()</span>
<a name="l00095"></a>00095 <span class="comment">// Starts the server if it is not already running</span>
<a name="l00096"></a>00096 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00097"></a>00097 <span class="comment">//</span>
<a name="l00098"></a>00098 <span class="keyword">static</span> TInt StartServer()
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 TInt result;
<a name="l00101"></a>00101
<a name="l00102"></a>00102 TFindServer findTimeServer( KTimeServerName );
<a name="l00103"></a>00103 TFullName name;
<a name="l00104"></a>00104
<a name="l00105"></a>00105 result = findTimeServer.Next( name );
<a name="l00106"></a>00106 <span class="keywordflow">if</span> ( result == KErrNone )
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 <span class="comment">// Server already running</span>
<a name="l00109"></a>00109 <span class="keywordflow">return</span> KErrNone;
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 RSemaphore semaphore;
<a name="l00113"></a>00113 result = semaphore.CreateGlobal( KTimeServerSemaphoreName, 0 );
<a name="l00114"></a>00114 <span class="keywordflow">if</span> ( result != KErrNone )
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <span class="keywordflow">return</span> result;
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 result = CreateServerProcess();
<a name="l00120"></a>00120 <span class="keywordflow">if</span> ( result != KErrNone )
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 <span class="keywordflow">return</span> result;
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124
<a name="l00125"></a>00125 semaphore.Wait();
<a name="l00126"></a>00126 semaphore.Close();
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keywordflow">return</span> KErrNone;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00132"></a>00132 <span class="comment">// CreateServerProcess()</span>
<a name="l00133"></a>00133 <span class="comment">// Creates a server process</span>
<a name="l00134"></a>00134 <span class="comment">// -----------------------------------------------------------------------------</span>
<a name="l00135"></a>00135 <span class="comment">//</span>
<a name="l00136"></a>00136 <span class="keyword">static</span> TInt CreateServerProcess()
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 TInt result;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keyword">const</span> TUidType serverUid( KNullUid, KNullUid, KServerUid3 );
<a name="l00141"></a>00141
<a name="l00142"></a>00142 RProcess server;
<a name="l00143"></a>00143
<a name="l00144"></a>00144 result = server.Create( KTimeServerFilename, KNullDesC, serverUid );
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="keywordflow">if</span> ( result != KErrNone )
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <span class="keywordflow">return</span> result;
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150
<a name="l00151"></a>00151 server.Resume();
<a name="l00152"></a>00152 server.Close();
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordflow">return</span> KErrNone;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="comment">// End of File</span>
</pre></div></div>
<hr size="1"/><address style="text-align: right;"><small>Generated by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
</body>
</html>