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11 <h1>examples/Base/IPC/pubsub/publishspec.cpp</h1><a href="publishspec_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span> |
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12 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
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13 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
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14 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
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15 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
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16 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
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17 <a name="l00007"></a>00007 <span class="comment">//</span> |
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18 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
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19 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
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20 <a name="l00010"></a>00010 <span class="comment">//</span> |
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21 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
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22 <a name="l00012"></a>00012 <span class="comment">//</span> |
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23 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
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24 <a name="l00014"></a>00014 <span class="comment">// Demonstrates the speculative publishing pattern of a byte-array property</span> |
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25 <a name="l00015"></a>00015 <span class="comment">//</span> |
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26 <a name="l00016"></a>00016 |
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27 <a name="l00017"></a>00017 |
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28 <a name="l00018"></a>00018 |
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29 <a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="publish_8h.html">publish.h</a>"</span> |
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30 <a name="l00024"></a>00024 |
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31 <a name="l00025"></a>00025 LOCAL_D CConsoleBase* console; |
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32 <a name="l00026"></a>00026 |
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33 <a name="l00032"></a><a class="code" href="publishspec_8cpp.html#ae3dba9d5ec6d59791d61680c67729f0e">00032</a> <span class="keywordtype">void</span> <a class="code" href="publish_8h.html#ae3dba9d5ec6d59791d61680c67729f0e">PublishL</a>(RProperty& aProperty,TDes16& aBuf) |
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34 <a name="l00033"></a>00033 { |
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35 <a name="l00034"></a>00034 TInt bufLength = aBuf.Length(); |
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36 <a name="l00035"></a>00035 console->Printf(KTxtPublish); |
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37 <a name="l00036"></a>00036 |
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38 <a name="l00037"></a>00037 <span class="comment">// Publish the property and handle the value returned appropriately</span> |
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39 <a name="l00038"></a>00038 <span class="comment">// Ignore the KErrNotFound error</span> |
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40 <a name="l00039"></a>00039 TInt err = aProperty.Set(aBuf); |
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41 <a name="l00040"></a>00040 <span class="keywordflow">switch</span>(err) |
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42 <a name="l00041"></a>00041 { |
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43 <a name="l00042"></a>00042 <span class="comment">// No error, property is defined</span> |
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44 <a name="l00043"></a>00043 <span class="keywordflow">case</span> KErrNone: |
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45 <a name="l00044"></a>00044 { |
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46 <a name="l00045"></a>00045 <span class="comment">// Print array elements</span> |
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47 <a name="l00046"></a>00046 console->Printf(KTxtArray); |
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48 <a name="l00047"></a>00047 <span class="keywordflow">for</span>(TInt ix = 0; ix < bufLength; ix++) |
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49 <a name="l00048"></a>00048 { |
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50 <a name="l00049"></a>00049 console->Printf(KTxtArrayElement,aBuf[ix]); |
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51 <a name="l00050"></a>00050 } |
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52 <a name="l00051"></a>00051 console->Printf(KTxtNewLine); |
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53 <a name="l00052"></a>00052 } |
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54 <a name="l00053"></a>00053 <span class="keywordflow">break</span>; |
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55 <a name="l00054"></a>00054 <span class="comment">// Property is not defined, ignore this error</span> |
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56 <a name="l00055"></a>00055 <span class="keywordflow">case</span> KErrNotFound: |
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57 <a name="l00056"></a>00056 { |
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58 <a name="l00057"></a>00057 console->Printf(KTxtNotFound); |
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59 <a name="l00058"></a>00058 } |
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60 <a name="l00059"></a>00059 <span class="keywordflow">break</span>; |
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61 <a name="l00060"></a>00060 <span class="comment">// Leave if any other errors are returned</span> |
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62 <a name="l00061"></a>00061 <span class="keywordflow">default</span>: |
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63 <a name="l00062"></a>00062 { |
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64 <a name="l00063"></a>00063 User::LeaveIfError(err); |
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65 <a name="l00064"></a>00064 } |
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66 <a name="l00065"></a>00065 } |
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67 <a name="l00066"></a>00066 } |
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68 <a name="l00067"></a>00067 |
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69 <a name="l00068"></a>00068 <span class="keywordtype">void</span> DoExampleL() |
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70 <a name="l00069"></a>00069 { |
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71 <a name="l00070"></a>00070 console->Printf(KTxtSpecPublish); |
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72 <a name="l00071"></a>00071 |
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73 <a name="l00072"></a>00072 RProperty myProperty; |
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74 <a name="l00073"></a>00073 console->Printf(KTxtCreateHandle); |
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75 <a name="l00074"></a>00074 <span class="comment">// Create a handle to the property</span> |
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76 <a name="l00075"></a>00075 User::LeaveIfError(myProperty.Attach(KMyPropertyCat,KMyPropertyName,EOwnerThread)); |
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77 <a name="l00076"></a>00076 |
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78 <a name="l00077"></a>00077 <span class="comment">// Byte-Array to be published</span> |
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79 <a name="l00078"></a>00078 TUint16 array[KArraySize] = {10,20,30,40}; |
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80 <a name="l00079"></a>00079 |
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81 <a name="l00080"></a>00080 <span class="comment">// Descriptor that the array contents are copied into</span> |
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82 <a name="l00081"></a>00081 TBuf16<KBufSize> buf; |
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83 <a name="l00082"></a>00082 |
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84 <a name="l00083"></a>00083 <span class="comment">// Copy array contents into the descriptor</span> |
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85 <a name="l00084"></a>00084 buf.Copy(&array[0],<span class="keyword">sizeof</span>(array)); |
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86 <a name="l00085"></a>00085 buf.SetLength(KArraySize); |
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87 <a name="l00086"></a>00086 |
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88 <a name="l00087"></a>00087 <span class="comment">// Publish the property</span> |
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89 <a name="l00088"></a>00088 <a class="code" href="publish_8h.html#ae3dba9d5ec6d59791d61680c67729f0e">PublishL</a>(myProperty,buf); |
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90 <a name="l00089"></a>00089 |
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91 <a name="l00090"></a>00090 <span class="comment">// Change the array contents</span> |
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92 <a name="l00091"></a>00091 array[0] = 0x00ab; |
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93 <a name="l00092"></a>00092 array[1] = 0x00bc; |
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94 <a name="l00093"></a>00093 array[2] = 0x00cd; |
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95 <a name="l00094"></a>00094 array[3] = 0x00de; |
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96 <a name="l00095"></a>00095 array[4] = 0x00ef; |
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97 <a name="l00096"></a>00096 array[5] = 0x00fa; |
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98 <a name="l00097"></a>00097 |
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99 <a name="l00098"></a>00098 <span class="comment">// Copy array contents into the descriptor</span> |
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100 <a name="l00099"></a>00099 buf.Copy(&array[0],<span class="keyword">sizeof</span>(array)); |
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101 <a name="l00100"></a>00100 buf.SetLength(KArraySize); |
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102 <a name="l00101"></a>00101 console->Printf(KTxtEnter); |
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103 <a name="l00102"></a>00102 |
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104 <a name="l00103"></a>00103 <span class="comment">// Wait for a key press</span> |
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105 <a name="l00104"></a>00104 <span class="keywordflow">while</span>(console->Getch()!= EKeyEnter) |
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106 <a name="l00105"></a>00105 { |
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107 <a name="l00106"></a>00106 console->Printf(KTxtEnter); |
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108 <a name="l00107"></a>00107 } |
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109 <a name="l00108"></a>00108 |
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110 <a name="l00109"></a>00109 <span class="comment">// Publish the property</span> |
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111 <a name="l00110"></a>00110 <a class="code" href="publish_8h.html#ae3dba9d5ec6d59791d61680c67729f0e">PublishL</a>(myProperty,buf); |
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112 <a name="l00111"></a>00111 |
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113 <a name="l00112"></a>00112 <span class="comment">// Indicate the publisher will not publish any more values</span> |
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114 <a name="l00113"></a>00113 buf.Copy(KStop); |
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115 <a name="l00114"></a>00114 console->Printf(KTxtEnter); |
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116 <a name="l00115"></a>00115 |
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117 <a name="l00116"></a>00116 <span class="comment">// Wait for a key press</span> |
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118 <a name="l00117"></a>00117 <span class="keywordflow">while</span>(console->Getch()!= EKeyEnter) |
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119 <a name="l00118"></a>00118 { |
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120 <a name="l00119"></a>00119 console->Printf(KTxtEnter); |
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121 <a name="l00120"></a>00120 } |
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122 <a name="l00121"></a>00121 |
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123 <a name="l00122"></a>00122 <span class="comment">// Publish the property</span> |
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124 <a name="l00123"></a>00123 <a class="code" href="publish_8h.html#ae3dba9d5ec6d59791d61680c67729f0e">PublishL</a>(myProperty,buf); |
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125 <a name="l00124"></a>00124 |
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126 <a name="l00125"></a>00125 <span class="comment">// Close the handle</span> |
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127 <a name="l00126"></a>00126 myProperty.Close(); |
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128 <a name="l00127"></a>00127 } |
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129 <a name="l00128"></a>00128 |
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130 <a name="l00129"></a><a class="code" href="publishspec_8cpp.html#a0f358e9c4355138f629b8c4f37310295">00129</a> GLDEF_C TInt E32Main() |
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131 <a name="l00130"></a>00130 { |
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132 <a name="l00131"></a>00131 __UHEAP_MARK; |
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133 <a name="l00132"></a>00132 CTrapCleanup* cleanup = CTrapCleanup::New(); |
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134 <a name="l00133"></a>00133 |
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135 <a name="l00134"></a>00134 TRAPD(createError, console = Console::NewL(KTextConsoleTitle, TSize(KConsFullScreen,KConsFullScreen))); |
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136 <a name="l00135"></a>00135 <span class="keywordflow">if</span> (createError) |
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137 <a name="l00136"></a>00136 <span class="keywordflow">return</span> createError; |
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138 <a name="l00137"></a>00137 |
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139 <a name="l00138"></a>00138 TRAPD(mainError, DoExampleL()); |
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140 <a name="l00139"></a>00139 <span class="keywordflow">if</span> (mainError) |
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141 <a name="l00140"></a>00140 console->Printf(KTextFailed, mainError); |
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142 <a name="l00141"></a>00141 console->Printf(KTextPressAnyKey); |
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143 <a name="l00142"></a>00142 console->Getch(); |
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144 <a name="l00143"></a>00143 |
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145 <a name="l00144"></a>00144 <span class="keyword">delete</span> console; |
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146 <a name="l00145"></a>00145 <span class="keyword">delete</span> cleanup; |
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147 <a name="l00146"></a>00146 __UHEAP_MARKEND; |
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148 <a name="l00147"></a>00147 <span class="keywordflow">return</span> KErrNone; |
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149 <a name="l00148"></a>00148 } |
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150 </pre></div></div> |
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