1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // e32\kernel\scmvariantdata.cpp |
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15 // Core dump server - Variant Data for System Crash |
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16 // |
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17 // |
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18 |
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19 #include <scmdatatypes.h> |
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20 |
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21 namespace Debug |
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22 { |
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23 /** |
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24 * TVariantSpecificData implementation |
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25 * @internal technology |
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26 */ |
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27 |
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28 /** |
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29 * TVariantSpecificData constructor |
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30 */ |
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31 TVariantSpecificData::TVariantSpecificData() : |
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32 iId(ESCMVariantData) |
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33 ,iVersion(EVariantSpecificDataVersion1) |
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34 ,iSize(0) |
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35 { |
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36 } |
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37 |
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38 /** |
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39 * Writes this classes data to the specified byte stream |
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40 * @param aWriter byte stream to use |
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41 * @return void |
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42 */ |
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43 TInt TVariantSpecificData::Serialize(TByteStreamWriter& aWriter) |
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44 { |
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45 TInt startPos = aWriter.CurrentPosition(); |
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46 |
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47 if(iId != ESCMVariantData) |
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48 { |
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49 CLTRACE("TVariantSpecificData::Serialize Corrupt ID"); |
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50 return KErrCorrupt; |
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51 } |
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52 |
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53 // ID saved first |
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54 aWriter.WriteInt(iId); // 4 |
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55 |
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56 aWriter.WriteShort((TUint16) iVersion); // 2 |
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57 |
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58 if(iVersion == EVariantSpecificDataVersion1) |
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59 { |
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60 // write data v1 format |
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61 aWriter.WriteInt(iSize); // 4 |
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62 } |
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63 else |
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64 { |
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65 CLTRACE("TVariantSpecificData::Serialize Unsupported version"); |
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66 return KErrCorrupt; |
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67 } |
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68 |
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69 TInt endPos = aWriter.CurrentPosition(); |
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70 if( endPos - startPos != GetSize()) |
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71 { |
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72 // error between actual size & real size in data |
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73 CLTRACE("TVariantSpecificData::Serialize serialization size error"); |
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74 return KErrCorrupt; |
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75 } |
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76 |
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77 return KErrNone; |
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78 } |
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79 |
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80 /** |
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81 * Reads the classes data from the specified byte stream |
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82 * @param aReader Byte stream to use |
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83 * @return void |
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84 */ |
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85 TInt TVariantSpecificData::Deserialize(TByteStreamReader& aReader) |
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86 { |
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87 TInt startPos = aReader.CurrentPosition(); |
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88 |
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89 iId = (SCMStructId)aReader.ReadInt(); // 4 |
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90 if(iId != ESCMVariantData) |
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91 { |
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92 CLTRACE("TVariantSpecificData::Deserialize Corrupt ID read"); |
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93 return KErrCorrupt; |
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94 } |
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95 |
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96 iVersion = (TVariantSpecificDataVersion)aReader.ReadShort(); // 2 |
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97 |
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98 if(iVersion == EVariantSpecificDataVersion1) |
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99 { |
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100 // read data v1 format |
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101 iSize = aReader.ReadInt(); // 4 |
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102 } |
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103 else |
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104 { |
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105 iId = ESCMLast; //unrecognised header |
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106 CLTRACE("TVariantSpecificData::Deserialize Unsupported version"); |
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107 return KErrCorrupt; |
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108 } |
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109 |
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110 TInt endPos = aReader.CurrentPosition(); |
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111 if( endPos - startPos != GetSize()) |
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112 { |
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113 iId = ESCMLast; //unrecognised header |
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114 |
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115 // error between actual size & real size in data |
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116 CLTRACE("TVariantSpecificData::Deserialize serialization size error"); |
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117 return KErrCorrupt; |
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118 } |
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119 return KErrNone; |
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120 } |
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121 |
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122 /** |
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123 * Returns the externalised size of this class |
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124 * @return TInt size |
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125 */ |
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126 TInt TVariantSpecificData::GetSize() const |
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127 { |
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128 if(iVersion == EVariantSpecificDataVersion1) |
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129 { |
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130 return 10; |
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131 } |
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132 else |
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133 { |
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134 CLTRACE("TThreadData::GetSize Unsupported version"); |
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135 return KErrNotSupported; |
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136 } |
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137 } |
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138 |
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139 } |
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