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1 // Copyright (c) 2005-2009 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 // e32test\multimedia\d_mmcsc.cpp |
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15 // The interface to a device driver which creates a shared chunk - for use with the multimedia driver tests. |
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16 // This driver uses only generic kernel APIs and so need not be built from each variant. |
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17 // |
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18 // |
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19 |
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20 /** |
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21 @file |
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22 @internalComponent |
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23 @test |
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24 */ |
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25 |
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26 #include <kernel/kern_priv.h> |
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27 #include "d_mmcsc.h" |
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28 |
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29 //#define __KTRACE_MMD(s) s; |
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30 #define __KTRACE_MMD(s) |
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31 |
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32 class DMmCreateScFactory : public DLogicalDevice |
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33 { |
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34 public: |
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35 DMmCreateScFactory(); |
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36 virtual TInt Install(); |
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37 virtual void GetCaps(TDes8 &aDes) const; |
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38 virtual TInt Create(DLogicalChannelBase*& aChannel); |
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39 }; |
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40 |
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41 class DMmCreateSc : public DLogicalChannel |
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42 { |
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43 public: |
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44 DMmCreateSc(); |
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45 ~DMmCreateSc(); |
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46 protected: |
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47 virtual TInt DoCreate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer); |
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48 virtual void HandleMsg(TMessageBase* aMsg); |
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49 TInt DoControl(TInt aId, TAny* a1, TAny* a2); |
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50 private: |
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51 TInt CreateChunk(TInt aNumBuffers,TInt aBufferSize); |
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52 void CloseChunk(); |
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53 TInt MakeChunkHandle(DThread* aThread); |
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54 private: |
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55 DThread* iClient; |
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56 TMmSharedChunkBufConfig iBufferConfig; |
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57 DChunk* iChunk; |
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58 }; |
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59 |
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60 DECLARE_STANDARD_LDD() |
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61 { |
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62 return new DMmCreateScFactory; |
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63 } |
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64 |
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65 DMmCreateScFactory::DMmCreateScFactory() |
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66 { |
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67 // Set version number for this device |
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68 iVersion=TVersion(0,1,1); |
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69 |
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70 // Indicate we do support units or a PDD |
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71 iParseMask=0; |
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72 } |
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73 |
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74 TInt DMmCreateScFactory::Install() |
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75 { |
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76 return(SetName(&KDevMmCScName)); |
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77 } |
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78 |
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79 void DMmCreateScFactory::GetCaps(TDes8& aDes) const |
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80 { |
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81 // Create a capabilities object |
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82 TCapsMmCScV01 caps; |
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83 caps.iVersion=iVersion; |
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84 |
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85 // Write it back to user memory |
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86 Kern::InfoCopy(aDes,(TUint8*)&caps,sizeof(caps)); |
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87 } |
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88 |
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89 TInt DMmCreateScFactory::Create(DLogicalChannelBase*& aChannel) |
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90 { |
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91 aChannel=new DMmCreateSc; |
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92 if (!aChannel) |
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93 return(KErrNoMemory); |
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94 return(KErrNone); |
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95 } |
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96 |
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97 DMmCreateSc::DMmCreateSc() |
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98 { |
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99 // iChunk=NULL; |
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100 iClient=&Kern::CurrentThread(); |
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101 ((DObject*)iClient)->Open(); |
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102 } |
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103 |
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104 DMmCreateSc::~DMmCreateSc() |
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105 { |
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106 CloseChunk(); |
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107 Kern::SafeClose((DObject*&)iClient,NULL); |
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108 } |
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109 |
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110 TInt DMmCreateSc::DoCreate(TInt /*aUnit*/, const TDesC8* /*anInfo*/, const TVersion& /*aVer*/) |
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111 { |
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112 |
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113 __KTRACE_MMD(Kern::Printf("DMmCreateSc:DoCreate")); |
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114 |
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115 SetDfcQ(Kern::DfcQue0()); |
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116 iMsgQ.Receive(); |
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117 |
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118 TInt r; |
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119 r=CreateChunk(KMmCScNumBuffers,KMmCScBufSize); // Contains two 150K buffers |
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120 return(r); |
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121 } |
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122 |
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123 void DMmCreateSc::HandleMsg(TMessageBase* aMsg) |
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124 { |
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125 |
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126 TThreadMessage& m=*(TThreadMessage*)aMsg; |
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127 TInt id=m.iValue; |
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128 if (id==(TInt)ECloseMsg) |
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129 { |
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130 m.Complete(KErrNone, EFalse); |
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131 return; |
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132 } |
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133 else if (id==KMaxTInt) |
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134 { |
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135 m.Complete(KErrNone,ETrue); // DoCancel |
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136 return; |
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137 } |
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138 |
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139 if (id<0) |
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140 { |
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141 TRequestStatus* pS=(TRequestStatus*)m.Ptr0(); // DoRequest |
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142 Kern::RequestComplete(iClient,pS,KErrNotSupported); |
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143 m.Complete(KErrNone,ETrue); |
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144 } |
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145 else |
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146 { |
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147 TInt r=DoControl(id,m.Ptr0(),m.Ptr1()); // DoControl |
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148 m.Complete(r,ETrue); |
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149 } |
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150 } |
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151 |
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152 TInt DMmCreateSc::DoControl(TInt aId, TAny* a1, TAny* /*a2*/) |
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153 { |
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154 |
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155 __KTRACE_MMD(Kern::Printf("DMmCreateSc:DoControl %x",aId)); |
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156 TInt r=KErrNone; |
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157 |
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158 switch (aId) |
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159 { |
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160 case RMmCreateSc::EGetChunkHandle: |
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161 { |
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162 r=MakeChunkHandle(iClient); |
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163 break; |
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164 } |
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165 case RMmCreateSc::EGetBufInfo: |
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166 { |
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167 TPtrC8 ptr((const TUint8*)&iBufferConfig,sizeof(iBufferConfig)); |
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168 r=Kern::ThreadDesWrite(iClient,a1,ptr,0,KTruncateToMaxLength,NULL); |
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169 break; |
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170 } |
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171 default: |
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172 r=KErrNotSupported; |
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173 } |
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174 return(r); |
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175 } |
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176 |
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177 TInt DMmCreateSc::CreateChunk(TInt aNumBuffers,TInt aBufferSize) |
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178 { |
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179 |
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180 TInt bufferSize=Kern::RoundToPageSize(aBufferSize); |
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181 TInt chunkSz=(aNumBuffers*bufferSize); |
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182 __KTRACE_MMD(Kern::Printf("DMmCreateSc:CreateChunk %d",chunkSz)); |
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183 |
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184 // Thread must be in critical section to create chunks |
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185 NKern::ThreadEnterCS(); |
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186 |
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187 // Create the shared chunk. |
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188 TChunkCreateInfo info; |
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189 info.iType = TChunkCreateInfo::ESharedKernelMultiple; |
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190 info.iMaxSize = chunkSz; |
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191 #if !defined(__WINS__) |
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192 info.iMapAttr=EMapAttrFullyBlocking; // No caching |
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193 #else |
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194 info.iMapAttr=0; |
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195 #endif |
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196 info.iOwnsMemory = ETrue; // Using RAM pages |
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197 info.iDestroyedDfc = NULL; // No chunk destroy DFC |
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198 |
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199 DChunk* chunk; |
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200 TLinAddr chunkKernelAddr; |
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201 TUint32 mapAttr; |
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202 TInt r = Kern::ChunkCreate(info,chunk,chunkKernelAddr,mapAttr); |
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203 if (r!=KErrNone) |
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204 { |
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205 NKern::ThreadLeaveCS(); |
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206 return(r); |
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207 } |
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208 |
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209 // Map the three buffers into the chunk - each containing physically contiguous RAM pages. |
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210 TInt bufOffset=0; |
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211 TUint32 pa; |
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212 r=Kern::ChunkCommitContiguous(chunk,bufOffset,bufferSize,pa); |
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213 if (r==KErrNone) |
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214 { |
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215 bufOffset+=bufferSize; |
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216 r=Kern::ChunkCommitContiguous(chunk,bufOffset,bufferSize,pa); |
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217 } |
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218 if (r==KErrNone) |
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219 { |
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220 bufOffset+=bufferSize; |
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221 r=Kern::ChunkCommitContiguous(chunk,bufOffset,bufferSize,pa); |
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222 } |
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223 if (r!=KErrNone) |
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224 Kern::ChunkClose(chunk); // Commit failed - tidy-up. |
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225 else |
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226 iChunk=chunk; |
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227 |
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228 NKern::ThreadLeaveCS(); |
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229 |
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230 // Update our buffer info. structure to reflect the chunk we have just created. |
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231 iBufferConfig.iNumBuffers=aNumBuffers; |
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232 iBufferConfig.iBufferSizeInBytes=aBufferSize; |
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233 iBufferConfig.iFlags|=KScFlagBufOffsetListInUse; |
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234 iBufferConfig.iSpec[0].iBufferOffset=0; |
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235 iBufferConfig.iSpec[0].iBufferId=0; |
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236 iBufferConfig.iSpec[1].iBufferOffset=bufferSize; |
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237 iBufferConfig.iSpec[1].iBufferId=1; |
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238 |
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239 __KTRACE_MMD(Kern::Printf("ChunkCommit %d",r)); |
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240 return(r); |
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241 } |
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242 |
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243 void DMmCreateSc::CloseChunk() |
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244 { |
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245 |
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246 __KTRACE_MMD(Kern::Printf("DMmCreateSc:CloseChunk")); |
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247 |
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248 // Thread must be in critical section to close a chunk |
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249 NKern::ThreadEnterCS(); |
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250 |
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251 // Close chunk |
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252 if (iChunk) |
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253 Kern::ChunkClose(iChunk); |
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254 |
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255 // Can leave critical section now |
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256 NKern::ThreadLeaveCS(); |
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257 } |
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258 |
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259 TInt DMmCreateSc::MakeChunkHandle(DThread* aThread) |
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260 { |
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261 |
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262 TInt r; |
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263 // Thread must be in critical section to make a handle |
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264 NKern::ThreadEnterCS(); |
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265 if (iChunk) |
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266 r=Kern::MakeHandleAndOpen(aThread,iChunk); |
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267 else |
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268 r=KErrNotFound; |
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269 NKern::ThreadLeaveCS(); |
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270 __KTRACE_MMD(Kern::Printf("DMmCreateSc:MakeChunkHandle %x %d",aThread,r)); |
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271 return(r); |
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272 } |