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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\debug\crashMonitor\src\scmlockdata.cpp |
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15 // some utility classes for writing data to flash buffer |
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16 // |
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17 // |
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18 |
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19 /** |
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20 @file |
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21 @internalTechnology |
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22 */ |
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23 |
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24 |
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25 #include <scmdatatypes.h> |
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26 |
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27 namespace Debug |
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28 { |
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29 |
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30 /** |
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31 * TSCMLockData constructor |
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32 * @param none |
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33 */ |
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34 TSCMLockData::TSCMLockData() |
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35 : iId(ESCMLocks) |
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36 , iMutexHoldCount(-1) |
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37 , iMutexThreadWaitCount(-1) |
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38 { |
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39 } |
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40 |
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41 /** |
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42 * TSCMLockData Serialize |
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43 * @param aWriter byte stream to use |
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44 * @return N/A |
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45 */ |
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46 TInt TSCMLockData::Serialize(TByteStreamWriter& aWriter) |
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47 { |
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48 TInt startPos = aWriter.CurrentPosition(); |
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49 |
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50 // ID saved first |
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51 if(iId != ESCMLocks) |
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52 { |
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53 CLTRACE("TSCMLockData::Serialize Corrupt ID"); |
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54 return KErrCorrupt; |
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55 } |
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56 |
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57 // write id first |
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58 aWriter.WriteInt(iId); // 4 |
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59 // 2 counts written as shorts (should be enough range!) |
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60 aWriter.WriteShort((TInt16) iMutexHoldCount); // 2 |
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61 aWriter.WriteShort((TInt16) iMutexThreadWaitCount); // 2 |
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62 aWriter.WriteShort((TInt16) iLockCount); // 2 |
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63 |
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64 |
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65 TInt endPos = aWriter.CurrentPosition(); |
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66 if( endPos - startPos != GetSize()) |
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67 { |
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68 // error between actual size & real size in data |
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69 CLTRACE("TSCMLockData::Serialize serialization size error"); |
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70 return KErrCorrupt; |
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71 } |
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72 |
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73 return KErrNone; |
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74 } |
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75 |
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76 /** |
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77 * Reads the classes data from the specified byte stream |
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78 * @param aReader Byte stream to use |
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79 * @return void |
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80 */ |
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81 TInt TSCMLockData::Deserialize(TByteStreamReader& aReader) |
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82 { |
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83 TInt startPos = aReader.CurrentPosition(); |
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84 |
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85 iId = (SCMStructId)aReader.ReadInt(); // 4 |
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86 if(iId != ESCMLocks) |
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87 { |
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88 CLTRACE("TSCMLockData::Deserialize Corrupt ID read"); |
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89 return KErrCorrupt; |
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90 } |
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91 |
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92 iMutexHoldCount = (TInt) aReader.ReadShort(); |
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93 iMutexThreadWaitCount = (TInt) aReader.ReadShort(); |
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94 iLockCount = (TInt) aReader.ReadShort(); |
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95 |
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96 |
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97 TInt endPos = aReader.CurrentPosition(); |
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98 if( endPos - startPos != GetSize()) |
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99 { |
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100 CLTRACE("TSCMLockData::Deserialize size error"); |
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101 return KErrCorrupt; |
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102 } |
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103 return KErrNone; |
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104 } |
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105 |
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106 /** |
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107 * Returns the externalised size of this class |
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108 * @return TInt size |
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109 */ |
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110 TInt TSCMLockData::GetSize() const |
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111 { |
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112 return KSCMLockDataMaxSize; |
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113 } |
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114 |
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115 /** |
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116 * MutexHoldCount |
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117 * @param none |
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118 * @return mutex hold count |
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119 */ |
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120 TInt TSCMLockData::MutexHoldCount() const |
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121 { |
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122 return iMutexHoldCount; |
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123 } |
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124 |
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125 /** |
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126 * SetMutexHoldCount |
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127 * @param |
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128 * @return |
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129 */ |
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130 void TSCMLockData::SetMutexHoldCount(TInt aMutexHoldCount) |
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131 { |
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132 iMutexHoldCount = aMutexHoldCount; |
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133 } |
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134 |
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135 /** |
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136 * MutexThreadWaitCount |
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137 * @param none |
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138 * @return number of threads waiting on held mutex - will only be valid if |
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139 * MutexHoldCount > 0 |
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140 */ |
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141 TInt TSCMLockData::MutexThreadWaitCount() const |
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142 { |
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143 return iMutexThreadWaitCount; |
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144 } |
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145 |
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146 /** |
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147 * SetMutexThreadWaitCount |
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148 * @param TInt - number of threads waiting on held mutex(es) |
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149 * @return void |
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150 */ |
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151 void TSCMLockData::SetMutexThreadWaitCount(TInt aMutexThreadWaitCount) |
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152 { |
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153 iMutexThreadWaitCount = aMutexThreadWaitCount; |
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154 } |
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155 |
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156 /** |
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157 * LockCount |
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158 * @param none |
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159 * @return TIOnt - the lock count |
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160 */ |
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161 TInt TSCMLockData::LockCount() const |
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162 { |
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163 return iLockCount; |
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164 } |
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165 |
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166 /** |
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167 * SetLockCount |
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168 * @param TInt - number of locks held |
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169 * @return void |
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170 */ |
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171 void TSCMLockData::SetLockCount(TInt aLockCount) |
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172 { |
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173 iLockCount = aLockCount; |
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174 } |
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175 |
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176 TBool TSCMLockData::operator == (const TSCMLockData& aOther) const |
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177 { |
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178 return ( iId == aOther.iId && |
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179 iMutexHoldCount == aOther.iMutexHoldCount && |
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180 iMutexThreadWaitCount == aOther.iMutexThreadWaitCount && |
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181 iLockCount == aOther.iLockCount ); |
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182 } |
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183 |
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184 TBool TSCMLockData::operator != (const TSCMLockData& aOther) const |
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185 { |
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186 return !(*this == aOther); |
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187 } |
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188 } |
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189 |
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190 |