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1 // Copyright (c) 2002-2009 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 // f32\sfile\sf_request.cpp |
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15 // |
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16 // |
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17 |
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18 #include "sf_std.h" |
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19 #include "sf_file_cache.h" |
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20 #ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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21 #include "sf_notifier.h" |
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22 #endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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23 |
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24 |
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25 TParse dummyP; |
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26 RMessage2 dummyM; |
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27 |
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28 CFsClientMessageRequest* RequestAllocator::iFreeHead; |
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29 CFsClientMessageRequest* RequestAllocator::iCloseHead; |
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30 TInt RequestAllocator::iAllocNum; |
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31 TInt RequestAllocator::iAllocNumOperation; |
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32 TMsgOperation* RequestAllocator::iFreeHeadSupOp; |
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33 |
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34 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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35 TInt RequestAllocator::iAllocated; |
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36 #endif |
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37 RFastLock RequestAllocator::iCacheLock; |
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38 |
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39 void RequestAllocator::Initialise() |
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40 { |
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41 iFreeHead=NULL; |
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42 iCloseHead=NULL; |
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43 iAllocNum=0; |
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44 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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45 iAllocated=0; |
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46 #endif |
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47 iAllocNumOperation=0; |
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48 iFreeHeadSupOp=NULL; |
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49 } |
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50 |
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51 TInt RequestAllocator::AllocRequest(TInt aNum) |
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52 // |
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53 // Allocates a group of request objects |
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54 // |
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55 { |
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56 TInt i; |
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57 if(iAllocNum < KMaxRequestAllocated) |
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58 { |
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59 __CACHE_PRINT(_L("RequestAllocator::AllocRequest() Not reached the limit")); |
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60 CFsClientMessageRequest* list; |
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61 CFsClientMessageRequest* start; |
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62 list = new CFsClientMessageRequest[KAllocReqBlock]; |
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63 start = list; |
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64 if(!list) |
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65 return KErrNoMemory; |
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66 |
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67 // Make sure the constructors are called for every element in the array |
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68 // - some compilers don't do this |
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69 for(TInt j=0; j<KAllocReqBlock; j++) |
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70 { |
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71 CFsClientMessageRequest* request = &list[j]; |
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72 new(request) CFsClientMessageRequest(); |
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73 } |
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74 |
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75 iAllocNum += KAllocReqBlock; |
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76 CFsClientMessageRequest* last; |
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77 for(i=1;i<KAllocReqBlock;i++) |
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78 { |
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79 last = list; |
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80 list++; |
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81 last->iNext = list; |
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82 } |
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83 list->iNext = iFreeHead; |
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84 iFreeHead = start; |
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85 return KErrNone; |
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86 } |
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87 else |
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88 { |
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89 __CACHE_PRINT1(_L("RequestAllocator::AllocRequest() Limit exceeded Count = %d"),aNum); |
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90 CFsClientMessageRequest* request; |
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91 for(i=0;i<aNum;i++) |
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92 { |
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93 request=new CFsClientMessageRequest; |
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94 if(!request) |
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95 return KErrNoMemory; |
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96 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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97 iAllocated++; |
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98 #endif |
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99 request->SetAllocated(); |
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100 request->iNext=iFreeHead; |
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101 iFreeHead=request; |
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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 void RequestAllocator::FreeRequest(CFsClientMessageRequest* aRequest) |
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108 // |
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109 //free request |
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110 // |
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111 { |
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112 __CACHE_PRINT1(_L("PLUGIN: RequestAllocator::FreeRequest for %x"), aRequest); |
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113 if(aRequest->IsAllocated()) |
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114 { |
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115 __CACHE_PRINT(_L("RequestAllocator::FreeRequest() Allocated request")); |
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116 delete(aRequest); |
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117 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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118 iAllocated--; |
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119 #endif |
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120 return; |
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121 } |
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122 |
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123 __CACHE_PRINT(_L("RequestAllocator::FreeRequest() returning to free list")); |
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124 iCacheLock.Wait(); |
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125 aRequest->iNext = iFreeHead; |
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126 iFreeHead=aRequest; |
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127 aRequest->SetSubstedDrive(NULL); |
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128 iCacheLock.Signal(); |
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129 } |
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130 |
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131 void RequestAllocator::OpenSubFailed(CSessionFs* aSession) |
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132 // |
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133 // Move requst from closed list to free list |
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134 // |
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135 { |
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136 __ASSERT_DEBUG(iCloseHead!=NULL,Fault(ERequestAllocatorOpenSubFailed)); // On arriving here Close Queue is supposed to be empty |
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137 __ASSERT_ALWAYS(aSession!=NULL,Fault(ERequestAllocatorOpenSubFailed)); |
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138 if (iCloseHead==NULL) |
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139 { |
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140 return; |
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141 } |
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142 iCacheLock.Wait(); |
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143 CFsClientMessageRequest* rp = iCloseHead; |
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144 iCloseHead = rp->iNext; |
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145 |
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146 // dec the number of closed requests owned by this session |
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147 aSession->CloseRequestCountDec(); |
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148 |
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149 rp->iNext = NULL; |
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150 if(rp->IsAllocated()) |
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151 { |
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152 __CACHE_PRINT(_L("RequestAllocator::OpenSubFailed() Allocated request")); |
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153 delete(rp); |
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154 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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155 iAllocated--; |
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156 #endif |
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157 } |
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158 else |
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159 { |
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160 __CACHE_PRINT(_L("RequestAllocator::OpenSubFailed()")); |
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161 if(iFreeHead) |
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162 { |
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163 rp->iNext = iFreeHead; |
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164 } |
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165 else |
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166 { |
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167 rp->iNext = NULL; |
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168 } |
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169 |
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170 iFreeHead = rp; |
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171 } |
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172 iCacheLock.Signal(); |
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173 } |
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174 |
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175 TInt RequestAllocator::GetMessageRequest(const TOperation& aOperation,const RMessage2& aMessage,CFsClientMessageRequest* &aRequest) |
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176 // |
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177 // tries to get a pre allocated message from the cache. Failing that allocates one indivisualy |
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178 // |
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179 { |
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180 if(aOperation.IsOpenSubSess()) |
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181 { |
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182 __CACHE_PRINT(_L("++RequestAllocator::GetMessageRequest() Open sub-sess")); |
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183 iCacheLock.Wait(); |
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184 if(iFreeHead == NULL || iFreeHead->iNext == NULL) |
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185 { |
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186 if(AllocRequest(2)!= KErrNone) |
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187 { |
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188 iCacheLock.Signal(); |
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189 return KErrNoMemory; |
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190 } |
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191 } |
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192 aRequest= iFreeHead; //get our request from free head |
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193 iFreeHead = iFreeHead->iNext->iNext; //set next but one as new free head read for next |
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194 |
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195 aRequest->iNext->iNext = NULL; //seperate our request and close from free list |
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196 CFsClientMessageRequest* CRp = aRequest->iNext; |
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197 aRequest->iNext = NULL; |
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198 if(iCloseHead) |
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199 { |
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200 CRp->iNext = iCloseHead; //set second one as a reserved (tail) close request |
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201 iCloseHead = CRp; |
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202 } |
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203 else |
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204 iCloseHead = CRp; |
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205 |
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206 ((CSessionFs*) aMessage.Session())->CloseRequestCountInc(); |
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207 } |
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208 else if(aOperation.IsCloseSubSess()) |
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209 { |
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210 __CACHE_PRINT(_L("++RequestAllocator::GetMessageRequest() Close sub-sess")); |
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211 |
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212 CFsObject* pO = SessionObjectFromHandle(aMessage.Int3(),0,reinterpret_cast<CSessionFs*>(aMessage.Session())); |
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213 if(!pO) |
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214 return KErrBadHandle; |
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215 |
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216 CObjPromotion* pm = (CObjPromotion*)pO; |
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217 TInt function = aMessage.Function(); |
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218 switch(function & KIpcFunctionMask) |
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219 { |
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220 case EFsFormatSubClose: |
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221 { |
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222 if(pm->UniqueID() != Formats->UniqueID()) |
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223 { |
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224 return KErrBadHandle; |
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225 } |
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226 break; |
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227 } |
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228 case EFsDirSubClose: |
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229 { |
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230 if(pm->UniqueID() != Dirs->UniqueID()) |
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231 { |
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232 return KErrBadHandle; |
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233 } |
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234 break; |
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235 } |
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236 case EFsFileSubClose: |
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237 { |
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238 if(pm->UniqueID() != FileShares->UniqueID()) |
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239 { |
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240 return KErrBadHandle; |
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241 } |
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242 break; |
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243 } |
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244 case EFsRawSubClose: |
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245 { |
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246 if(pm->UniqueID() != RawDisks->UniqueID()) |
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247 { |
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248 return KErrBadHandle; |
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249 } |
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250 break; |
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251 } |
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252 case EFsPluginSubClose: |
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253 { |
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254 if(pm->UniqueID() != FsPluginManager::iPluginConns->UniqueID()) |
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255 { |
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256 return KErrBadHandle; |
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257 } |
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258 break; |
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259 } |
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260 #ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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261 case EFsNotificationSubClose: |
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262 { |
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263 if(pm->UniqueID() != FsNotificationManager::iNotifyRequests->UniqueID()) |
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264 { |
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265 return KErrBadHandle; |
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266 } |
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267 break; |
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268 } |
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269 #endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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270 default: |
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271 Fault(ECloseSubBadMessage); |
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272 } |
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273 |
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274 iCacheLock.Wait(); |
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275 aRequest = iCloseHead; |
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276 iCloseHead = aRequest->iNext; |
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277 ((CSessionFs*) aMessage.Session())->CloseRequestCountDec(); |
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278 aRequest->iNext = NULL; |
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279 |
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280 if((function & KIpcFunctionMask)!= EFsPluginSubClose && |
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281 (function & KIpcFunctionMask)!= EFsNotificationSubClose) |
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282 { |
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283 aRequest->SetDrive(&TheDrives[((CFsDispatchObject*)pO)->DriveNumber()]); |
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284 } |
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285 |
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286 aRequest->SetScratchValue((TUint)pO); |
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287 } |
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288 else |
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289 { |
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290 __CACHE_PRINT(_L("++RequestAllocator::GetMessageRequest() ")); |
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291 iCacheLock.Wait(); |
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292 if(!iFreeHead) |
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293 { |
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294 if(AllocRequest(1) != KErrNone) |
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295 { |
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296 iCacheLock.Signal(); |
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297 return KErrNoMemory; |
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298 } |
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299 } |
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300 aRequest = iFreeHead; |
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301 iFreeHead = aRequest->iNext; |
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302 aRequest->iNext= NULL; |
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303 } |
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304 |
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305 aRequest->Init(); |
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306 |
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307 iCacheLock.Signal(); |
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308 |
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309 // pre-allocate any TParse objects needed by this request |
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310 if (aRequest->AllocParseObjects(aOperation) != KErrNone) |
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311 { |
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312 aRequest->Free(); |
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313 return KErrNoMemory; |
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314 } |
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315 |
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316 __CACHE_PRINT1(_L("--RequestAllocator::GetMessageRequest() allocated %08x"), aRequest); |
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317 |
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318 return KErrNone; |
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319 } |
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320 |
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321 |
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322 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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323 TInt RequestAllocator::CloseCount() |
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324 {TInt count=0; |
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325 CFsClientMessageRequest* list=iCloseHead; |
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326 while(list!=NULL) |
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327 { |
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328 count++; |
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329 list=list->iNext; |
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330 } |
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331 return(count); |
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332 } |
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333 TInt RequestAllocator::FreeCount() |
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334 { |
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335 TInt count=0; |
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336 CFsClientMessageRequest* list=iFreeHead; |
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337 while(list!=NULL) |
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338 { |
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339 count++; |
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340 list=list->iNext; |
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341 } |
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342 return(count);} |
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343 #endif |
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344 |
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345 TInt RequestAllocator::AllocOperation() |
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346 // |
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347 // Allocates a group of TMsgOperation objects |
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348 // |
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349 // Must be called with iCacheLock held |
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350 { |
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351 TInt i; |
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352 if(iAllocNumOperation < KMaxOperationAllocated) |
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353 { |
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354 __CACHE_PRINT(_L("RequestAllocator::AllocOperation() Not reached the limit")); |
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355 TMsgOperation* list; |
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356 TMsgOperation* start; |
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357 list = new TMsgOperation[KAllocReqBlock]; |
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358 start = list; |
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359 if(!list) |
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360 return KErrNoMemory; |
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361 |
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362 for(TInt j=0; j<KAllocReqBlock; j++) |
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363 { |
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364 TMsgOperation* request = &list[j]; |
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365 request->iIsAllocated = EFalse; |
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366 } |
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367 |
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368 iAllocNumOperation += KAllocReqBlock; |
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369 TMsgOperation* last; |
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370 for(i=1;i<KAllocReqBlock;i++) |
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371 { |
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372 last = list; |
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373 list++; |
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374 last->iNext = list; |
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375 } |
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376 list->iNext = iFreeHeadSupOp; |
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377 iFreeHeadSupOp = start; |
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378 return KErrNone; |
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379 } |
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380 else |
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381 { |
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382 __CACHE_PRINT(_L("RequestAllocator::AllocOperation() Limit exceeded")); |
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383 TMsgOperation* request; |
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384 |
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385 request=new TMsgOperation; |
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386 if(!request) |
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387 return KErrNoMemory; |
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388 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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389 iAllocated++; |
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390 #endif |
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391 request->iIsAllocated = ETrue; |
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392 request->iNext=iFreeHeadSupOp; |
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393 iFreeHeadSupOp=request; |
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394 |
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395 return KErrNone; |
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396 } |
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397 } |
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398 TInt RequestAllocator::GetOperation(TMsgOperation* &aOperation) |
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399 // |
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400 // tries to get a pre allocated subop from the cache. Failing that allocates one individualy |
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401 // |
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402 { |
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403 |
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404 __CACHE_PRINT(_L("RequestAllocator::GetOperation() ")); |
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405 iCacheLock.Wait(); |
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406 if(!iFreeHeadSupOp) |
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407 { |
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408 if(AllocOperation() != KErrNone) |
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409 { |
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410 iCacheLock.Signal(); |
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411 return KErrNoMemory; |
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412 } |
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413 } |
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414 aOperation = iFreeHeadSupOp; |
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415 iFreeHeadSupOp = aOperation->iNext; |
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416 aOperation->iNext = aOperation->iPrev = NULL; |
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417 |
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418 iCacheLock.Signal(); |
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419 return KErrNone; |
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420 } |
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421 |
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422 void RequestAllocator::FreeOperation(TMsgOperation* aOperation) |
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423 // |
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424 // free Operation |
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425 // |
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426 { |
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427 if(aOperation->iIsAllocated) |
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428 { |
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429 __CACHE_PRINT(_L("RequestAllocator::FreeOperation() Allocated subop")); |
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430 delete(aOperation); |
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431 #if defined(_USE_CONTROLIO) || defined(_DEBUG) || defined(_DEBUG_RELEASE) |
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432 iAllocated--; |
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433 #endif |
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434 return; |
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435 } |
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436 |
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437 __CACHE_PRINT(_L("RequestAllocator::FreeOperation() returning to free list")); |
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438 iCacheLock.Wait(); |
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439 aOperation->iNext = iFreeHeadSupOp; // NB backward link only used when request in in use |
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440 iFreeHeadSupOp = aOperation; |
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441 |
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442 iCacheLock.Signal(); |
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443 } |
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444 |
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445 |
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446 CFsRequest::CFsRequest() |
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447 // |
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448 // |
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449 // |
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450 : iOperation(NULL),iDriveNumber(KDriveInvalid) |
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451 {} |
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452 |
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453 CFsRequest::~CFsRequest() |
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454 // |
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455 // |
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456 // |
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457 {} |
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458 |
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459 void CFsRequest::Set(const TOperation& aOperation,CSessionFs* aSession) |
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460 // |
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461 // |
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462 // |
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463 { |
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464 |
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465 SetState(EReqStateInitialise); |
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466 |
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467 iOperation = const_cast<TOperation*>(&aOperation); |
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468 iSession = aSession; |
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469 iIsCompleted = aOperation.IsCompleted(); |
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470 iError = KErrNone; |
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471 iDriveNumber = KDriveInvalid; |
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472 iCurrentPlugin = NULL; |
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473 iOwnerPlugin = NULL; |
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474 iDirectToDrive = EFalse; |
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475 iClientThreadId= 0; |
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476 iFlags &= ~(EFreeChanged | EPostInterceptEnabled | EPostOperation | EFsObjectOpen); |
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477 iScratchValue = 0; |
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478 } |
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479 |
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480 void CFsRequest::Set(CSessionFs* aSession) |
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481 // |
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482 // |
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483 // |
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484 { |
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485 __ASSERT_DEBUG(iOperation,Fault(EBaseRequestSet1)); |
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486 |
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487 SetState(EReqStateInitialise); |
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488 |
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489 iSession = aSession; |
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490 iIsCompleted = iOperation->IsCompleted(); |
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491 iError = KErrNone; |
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492 iDriveNumber = KDriveInvalid; |
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493 iCurrentPlugin = NULL; |
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494 iOwnerPlugin = NULL; |
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495 iDirectToDrive = EFalse; |
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496 iClientThreadId= 0; |
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497 iFlags &= ~(EFreeChanged | EPostInterceptEnabled | EPostOperation | EFsObjectOpen); |
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498 iScratchValue = 0; |
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499 } |
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500 |
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501 |
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502 TParse& CFsRequest::Src() |
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503 // |
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504 // |
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505 // |
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506 { |
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507 Fault(EBaseRequestSrc); |
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508 return(dummyP); |
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509 } |
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510 |
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511 TParse& CFsRequest::Dest() |
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512 // |
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513 // |
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514 // |
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515 { |
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516 Fault(EBaseRequestDest); |
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517 return(dummyP); |
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518 } |
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519 |
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520 TDrive* CFsRequest::Drive() |
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521 // |
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522 // |
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523 // |
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524 { |
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525 Fault(EBaseRequestDrive); |
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526 return(NULL); |
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527 } |
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528 |
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529 TDrive* CFsRequest::SubstedDrive() |
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530 // |
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531 // |
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532 // |
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533 { |
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534 Fault(EBaseRequestSubstedDrive); |
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535 return(NULL); |
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536 } |
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537 |
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538 void CFsRequest::SetDrive(TDrive* /*aDrive*/) |
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539 // |
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540 // |
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541 // |
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542 { |
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543 Fault(EBaseRequestSetDrive); |
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544 } |
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545 |
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546 void CFsRequest::SetSubstedDrive(TDrive* /*aDrive*/) |
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547 // |
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548 // |
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549 // |
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550 { |
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551 Fault(EBaseRequestSetSubstedDrive); |
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552 } |
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553 |
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554 TInt CFsRequest::GetSlot(TFsPluginRequest::TF32ArgType aType) |
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555 { |
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556 if(iOperation->Arg(0) == aType) return 0; |
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557 if(iOperation->Arg(1) == aType) return 1; |
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558 if(iOperation->Arg(2) == aType) return 2; |
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559 if(iOperation->Arg(3) == aType) return 3; |
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560 |
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561 return(-1); |
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562 } |
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563 |
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564 |
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565 TBool CFsMessageRequest::IsNotifierSpecific() const |
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566 { |
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567 #ifndef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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568 return EFalse; |
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569 #else |
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570 TInt function = iOperation->iFunction; |
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571 return( function == EFsNotificationAdd || |
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572 function == EFsNotificationBuffer || |
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573 function == EFsNotificationCancel || |
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574 function == EFsNotificationOpen || |
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575 function == EFsNotificationRemove || |
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576 function == EFsNotificationRequest || |
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577 function == EFsNotificationSubClose); |
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578 #endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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579 } |
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580 |
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581 |
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582 TBool CFsMessageRequest::IsNotifierSupported() const |
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583 { |
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584 #ifndef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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585 return EFalse; |
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586 #else |
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587 TInt function = iOperation->iFunction; |
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588 return( function == EFsDelete || |
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589 function == EFsRmDir || |
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590 function == EFsMkDir || |
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591 function == EFsFormatNext || |
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592 function == EFsFileCreate || |
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593 function == EFsFileReplace || |
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594 function == EFsFileRename || |
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595 function == EFsRename || |
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596 function == EFsReplace || |
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597 function == EFsSetDriveName || |
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598 function == EFsSetVolume || |
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599 function == EFsSetEntry || |
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600 function == EFsFileSetAtt || |
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601 function == EFsFileSet || |
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602 function == EFsMountFileSystem || |
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603 function == EFsDismountFileSystem || |
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604 function == EFsFileSetSize || |
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605 function == EFsFileWrite || |
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606 function == EFsFileWriteDirty || |
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607 function == EFsRawDiskWrite || |
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608 function == EFsMountFileSystemScan); |
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609 #endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
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610 } |
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611 |
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612 |
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613 TInt CFsRequest::Read(TFsPluginRequest::TF32ArgType aType, TInt& aVal) |
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614 { |
|
615 if(iOperation->Arg(0) == aType) { aVal = Message().Int0(); return KErrNone; } |
|
616 if(iOperation->Arg(1) == aType) { aVal = Message().Int1(); return KErrNone; } |
|
617 if(iOperation->Arg(2) == aType) { aVal = Message().Int2(); return KErrNone; } |
|
618 if(iOperation->Arg(3) == aType) { aVal = Message().Int3(); return KErrNone; } |
|
619 |
|
620 return KErrNotSupported; |
|
621 } |
|
622 |
|
623 |
|
624 TInt CFsRequest::Read(TFsPluginRequest::TF32ArgType aType, TUint& aVal) |
|
625 { |
|
626 if(iOperation->Arg(0) == aType) { aVal = (TUint)Message().Int0(); return KErrNone; } |
|
627 if(iOperation->Arg(1) == aType) { aVal = (TUint)Message().Int1(); return KErrNone; } |
|
628 if(iOperation->Arg(2) == aType) { aVal = (TUint)Message().Int2(); return KErrNone; } |
|
629 if(iOperation->Arg(3) == aType) { aVal = (TUint)Message().Int3(); return KErrNone; } |
|
630 |
|
631 return KErrNotSupported; |
|
632 } |
|
633 |
|
634 TInt CFsRequest::Read(TFsPluginRequest::TF32ArgType aType, TInt64& aVal) |
|
635 { |
|
636 TPckg<TInt64> pkVal(aVal); |
|
637 // EFsFileLock, EFsFileUnLock, EFsFileSeek and EFsFileSetSize need special treatment |
|
638 if(iOperation->Arg(0) == aType) |
|
639 { |
|
640 if((iOperation->Function()==EFsFileLock) || |
|
641 (iOperation->Function()==EFsFileUnLock) ) |
|
642 { |
|
643 if(IsDescData(KMsgPtr0)) |
|
644 Read(KMsgPtr0,pkVal); |
|
645 else |
|
646 aVal = MAKE_TINT64(0, Message().Int0()); // Position is unsigned value |
|
647 return KErrNone; |
|
648 } |
|
649 |
|
650 if((iOperation->Function()==EFsFileSeek) || // Seek offset (input paramater) |
|
651 (iOperation->Function()==EFsFileSize) || // Size (output paramater) |
|
652 (iOperation->Function()==EFsFileSetSize) ) // Size to be set (input paramater) |
|
653 { |
|
654 if(IsDescData(KMsgPtr0)) |
|
655 Read(KMsgPtr0,pkVal); |
|
656 else |
|
657 aVal = Message().Int0(); // Seek offset / Size is signed value |
|
658 return KErrNone; |
|
659 } |
|
660 |
|
661 aVal = Message().Int0(); |
|
662 return KErrNone; |
|
663 } |
|
664 |
|
665 // EFsFileLock and EFsFileUnLock need special treatment |
|
666 if(iOperation->Arg(1) == aType) |
|
667 { |
|
668 if((iOperation->Function()==EFsFileLock) || |
|
669 (iOperation->Function()==EFsFileUnLock) ) |
|
670 { |
|
671 if(IsDescData(KMsgPtr1)) |
|
672 Read(KMsgPtr1,pkVal); |
|
673 else |
|
674 aVal = MAKE_TINT64(0, Message().Int1()); // Length is unsigned value |
|
675 return KErrNone; |
|
676 } |
|
677 |
|
678 aVal = Message().Int1(); |
|
679 return KErrNone; |
|
680 } |
|
681 |
|
682 // EFsFileRead, EFsFileWrite, EFsFileSeek and EFsReadFileSection need special treatment |
|
683 if(iOperation->Arg(2) == aType) |
|
684 { |
|
685 if((iOperation->Function()==EFsFileRead) || |
|
686 (iOperation->Function()==EFsFileWrite) ) |
|
687 { |
|
688 if(IsDescData(KMsgPtr2)) |
|
689 Read(KMsgPtr2,pkVal); |
|
690 else |
|
691 { |
|
692 if(Message().Int2() == (TInt)I64LOW(KCurrentPosition64)) |
|
693 aVal = KCurrentPosition64; // Position is KCurrentPosition64 (-1) |
|
694 else |
|
695 aVal = MAKE_TINT64(0,Message().Int2()); // Position is unsigned value |
|
696 } |
|
697 return KErrNone; |
|
698 } |
|
699 |
|
700 if(iOperation->Function()==EFsFileSeek) |
|
701 { |
|
702 if(IsDescData(KMsgPtr2)) |
|
703 Read(KMsgPtr2,pkVal); |
|
704 else |
|
705 aVal = Message().Int2(); // New position is signed value |
|
706 return KErrNone; |
|
707 } |
|
708 |
|
709 if(iOperation->Function()==EFsReadFileSection) |
|
710 { |
|
711 if(IsDescData(KMsgPtr2)) |
|
712 Read(KMsgPtr2,pkVal); |
|
713 else |
|
714 aVal = MAKE_TINT64(0,Message().Int2()); // Position is unsigned value |
|
715 return KErrNone; |
|
716 } |
|
717 |
|
718 aVal = Message().Int2(); |
|
719 return KErrNone; |
|
720 } |
|
721 |
|
722 if(iOperation->Arg(3) == aType) |
|
723 { |
|
724 aVal = Message().Int3(); |
|
725 return KErrNone; |
|
726 } |
|
727 |
|
728 return KErrNotSupported; |
|
729 } |
|
730 |
|
731 void CFsRequest::SetAndOpenScratchValue(const TInt64& aValue) |
|
732 { |
|
733 if (IsFsObjectOpen()) |
|
734 { |
|
735 ((CFsDispatchObject*) I64LOW(iScratchValue))->Close(); |
|
736 SetFsObjectOpen(EFalse); |
|
737 } |
|
738 if (I64LOW(aValue) && iOperation && (iOperation->iFlags & EFileShare)) |
|
739 { |
|
740 ((CFsDispatchObject*) I64LOW(aValue))->Open(); |
|
741 SetFsObjectOpen(ETrue); |
|
742 } |
|
743 iScratchValue = aValue; |
|
744 } |
|
745 |
|
746 |
|
747 TInt CFsRequest::Read(TFsPluginRequest::TF32ArgType aType, TDes8& aDes, TInt aOffset) |
|
748 { |
|
749 TInt slot = GetSlot(aType); |
|
750 if(slot >= 0) |
|
751 return Read(slot, aDes, aOffset); |
|
752 return KErrNotSupported; |
|
753 } |
|
754 |
|
755 |
|
756 TInt CFsRequest::Read(TFsPluginRequest::TF32ArgType aType, TDes16& aDes, TInt aOffset) |
|
757 { |
|
758 TInt slot = GetSlot(aType); |
|
759 if(slot >= 0) |
|
760 return Read(slot, aDes, aOffset); |
|
761 return KErrNotSupported; |
|
762 } |
|
763 |
|
764 |
|
765 TInt CFsRequest::Write(TFsPluginRequest::TF32ArgType aType, const TDesC8& aDes, TInt aOffset) |
|
766 { |
|
767 TInt slot = GetSlot(aType); |
|
768 if(slot >= 0) |
|
769 return Write(slot, aDes, aOffset); |
|
770 return KErrNotSupported; |
|
771 } |
|
772 |
|
773 |
|
774 TInt CFsRequest::Write(TFsPluginRequest::TF32ArgType aType, const TDesC16& aDes, TInt aOffset) |
|
775 { |
|
776 TInt slot = GetSlot(aType); |
|
777 if(slot >= 0) |
|
778 return Write(slot, aDes, aOffset); |
|
779 return KErrNotSupported; |
|
780 } |
|
781 |
|
782 |
|
783 TInt CFsRequest::Read(const TInt aMsgPtr,TDes8 &aDes) |
|
784 { |
|
785 if (Message().Handle() == KLocalMessageHandle) |
|
786 { |
|
787 TDesC8* pDes = (TDesC8*) ((const RLocalMessage*) &Message())->Arg(aMsgPtr); |
|
788 if (aDes.MaxLength() < pDes->Length()) |
|
789 return KErrTooBig; |
|
790 aDes.Copy(*pDes); |
|
791 return KErrNone; |
|
792 } |
|
793 |
|
794 return Message().Read(aMsgPtr,aDes,0); |
|
795 } |
|
796 |
|
797 |
|
798 TInt CFsRequest::Read(const TInt aMsgPtr,TDes8 &aDes,TInt anOffset) |
|
799 { |
|
800 if (Message().Handle() == KLocalMessageHandle) |
|
801 { |
|
802 TDesC8* pDes = (TDesC8*) ((const RLocalMessage*) &Message())->Arg(aMsgPtr); |
|
803 if (aDes.MaxLength() < pDes->Length() + anOffset) |
|
804 return KErrTooBig; |
|
805 aDes.SetLength(pDes->Length() + anOffset); |
|
806 aDes.MidTPtr(anOffset).Copy(*pDes); |
|
807 return KErrNone; |
|
808 } |
|
809 |
|
810 return Message().Read(aMsgPtr,aDes,anOffset); |
|
811 } |
|
812 |
|
813 |
|
814 TInt CFsRequest::Read(const TInt aMsgPtr,TDes16 &aDes) |
|
815 { |
|
816 if (Message().Handle() == KLocalMessageHandle) |
|
817 { |
|
818 TDesC16* pDes = (TDesC16*) ((const RLocalMessage*) &Message())->Arg(aMsgPtr); |
|
819 if (aDes.MaxLength() < pDes->Length()) |
|
820 return KErrTooBig; |
|
821 aDes.Copy(*pDes); |
|
822 return KErrNone; |
|
823 } |
|
824 |
|
825 return Message().Read(aMsgPtr,aDes,0); |
|
826 } |
|
827 |
|
828 |
|
829 TInt CFsRequest::Read(const TInt aMsgPtr,TDes16 &aDes,TInt anOffset) |
|
830 { |
|
831 if (Message().Handle() == KLocalMessageHandle) |
|
832 { |
|
833 TDesC16* pDes = (TDesC16*) ((const RLocalMessage*) &Message())->Arg(aMsgPtr); |
|
834 if (aDes.MaxLength() < pDes->Length() + anOffset) |
|
835 return KErrTooBig; |
|
836 aDes.SetLength(pDes->Length() + anOffset); |
|
837 aDes.MidTPtr(anOffset).Copy(*pDes); |
|
838 return KErrNone; |
|
839 } |
|
840 |
|
841 return Message().Read(aMsgPtr,aDes,anOffset); |
|
842 } |
|
843 |
|
844 |
|
845 TInt CFsRequest::Write(const TInt aMsgNum,const TDesC8 &aDes) |
|
846 { |
|
847 if (Message().Handle() == KLocalMessageHandle) |
|
848 { |
|
849 TDes8* pDes = (TDes8*) ((const RLocalMessage*) &Message())->Arg(aMsgNum); |
|
850 if (pDes->MaxLength() < aDes.Length()) |
|
851 return KErrTooBig; |
|
852 pDes->Copy(aDes); |
|
853 return KErrNone; |
|
854 } |
|
855 |
|
856 return Message().Write(aMsgNum,aDes,0); |
|
857 } |
|
858 |
|
859 |
|
860 TInt CFsRequest::Write(const TInt aMsgNum,const TDesC8 &aDes,TInt anOffset) |
|
861 { |
|
862 if (Message().Handle() == KLocalMessageHandle) |
|
863 { |
|
864 TDes8* pDes = (TDes8*) ((const RLocalMessage*) &Message())->Arg(aMsgNum); |
|
865 if (pDes->MaxLength() < aDes.Length() + anOffset) |
|
866 return KErrTooBig; |
|
867 pDes->SetLength(aDes.Length() + anOffset); |
|
868 pDes->MidTPtr(anOffset).Copy(aDes); |
|
869 return KErrNone; |
|
870 } |
|
871 |
|
872 return Message().Write(aMsgNum,aDes,anOffset); |
|
873 } |
|
874 |
|
875 |
|
876 TInt CFsRequest::Write(const TInt aMsgNum,const TDesC16 &aDes) |
|
877 { |
|
878 if (Message().Handle() == KLocalMessageHandle) |
|
879 { |
|
880 TDes16* pDes = (TDes16*) ((const RLocalMessage*) &Message())->Arg(aMsgNum); |
|
881 if (pDes->MaxLength() < aDes.Length()) |
|
882 return KErrTooBig; |
|
883 pDes->Copy(aDes); |
|
884 return KErrNone; |
|
885 } |
|
886 |
|
887 return Message().Write(aMsgNum,aDes,0); |
|
888 } |
|
889 |
|
890 |
|
891 TInt CFsRequest::Write(const TInt aMsgNum,const TDesC16 &aDes,TInt anOffset) |
|
892 { |
|
893 if (Message().Handle() == KLocalMessageHandle) |
|
894 { |
|
895 TDes16* pDes = (TDes16*) ((const RLocalMessage*) &Message())->Arg(aMsgNum); |
|
896 if (pDes->MaxLength() < aDes.Length() + anOffset) |
|
897 return KErrTooBig; |
|
898 pDes->SetLength(aDes.Length() + anOffset); |
|
899 pDes->MidTPtr(anOffset).Copy(aDes); |
|
900 return KErrNone; |
|
901 } |
|
902 |
|
903 return Message().Write(aMsgNum,aDes,anOffset); |
|
904 } |
|
905 |
|
906 |
|
907 void CFsRequest::ReadL(const TInt aMsgPtr,TDes8 &aDes) |
|
908 { User::LeaveIfError(Read(aMsgPtr,aDes)); } |
|
909 |
|
910 void CFsRequest::ReadL(const TInt aMsgPtr,TDes8 &aDes,TInt anOffset) |
|
911 { User::LeaveIfError(Read(aMsgPtr,aDes,anOffset)); } |
|
912 |
|
913 void CFsRequest::ReadL(const TInt aMsgPtr,TDes16 &aDes) |
|
914 { User::LeaveIfError(Read(aMsgPtr,aDes)); } |
|
915 |
|
916 void CFsRequest::ReadL(const TInt aMsgPtr,TDes16 &aDes,TInt anOffset) |
|
917 { User::LeaveIfError(Read(aMsgPtr,aDes,anOffset)); } |
|
918 |
|
919 void CFsRequest::WriteL(const TInt aMsgNum,const TDesC8 &aDes) |
|
920 { User::LeaveIfError(Write(aMsgNum,aDes)); } |
|
921 |
|
922 void CFsRequest::WriteL(const TInt aMsgNum,const TDesC8 &aDes,TInt anOffset) |
|
923 { User::LeaveIfError(Write(aMsgNum,aDes,anOffset)); } |
|
924 |
|
925 void CFsRequest::WriteL(const TInt aMsgNum,const TDesC16 &aDes) |
|
926 { User::LeaveIfError(Write(aMsgNum,aDes)); } |
|
927 |
|
928 void CFsRequest::WriteL(const TInt aMsgNum,const TDesC16 &aDes,TInt anOffset) |
|
929 { User::LeaveIfError(Write(aMsgNum,aDes,anOffset)); } |
|
930 |
|
931 |
|
932 /** |
|
933 @param aMsgNum message argument index |
|
934 @return client side descriptor length |
|
935 */ |
|
936 TInt CFsRequest::GetDesLength(const TInt aMsgNum) |
|
937 { |
|
938 if (Message().Handle() == KLocalMessageHandle) |
|
939 { |
|
940 TDes8* pDes = (TDes8*) ((const RLocalMessage*) &Message())->Arg(aMsgNum); |
|
941 return pDes->Length(); |
|
942 } |
|
943 else |
|
944 { |
|
945 return Message().GetDesLength(aMsgNum); |
|
946 } |
|
947 } |
|
948 |
|
949 const RMessage2& CFsRequest::Message() |
|
950 // |
|
951 // |
|
952 // |
|
953 { |
|
954 Fault(EBaseRequestMessage); |
|
955 return(dummyM); |
|
956 } |
|
957 |
|
958 |
|
959 |
|
960 void CFsMessageRequest::Set(const RMessage2& aMessage,CSessionFs* aSession) |
|
961 // |
|
962 // For reuseable request |
|
963 // |
|
964 { |
|
965 iMessage=aMessage; |
|
966 iDrive=NULL; |
|
967 iSubstedDrive=NULL; |
|
968 CFsRequest::Set(aSession); |
|
969 SetFreeChanged(EFalse); |
|
970 EnablePostIntercept(ETrue); |
|
971 } |
|
972 |
|
973 |
|
974 void CFsMessageRequest::Set(const RMessage2& aMessage,const TOperation& aOperation,CSessionFs* aSession) |
|
975 // |
|
976 // |
|
977 // |
|
978 { |
|
979 iCurrentPlugin=NULL; |
|
980 iMessage=aMessage; |
|
981 iDrive=NULL; |
|
982 iSubstedDrive=NULL; |
|
983 CFsRequest::Set(aOperation,aSession); |
|
984 SetFreeChanged(EFalse); |
|
985 EnablePostIntercept(ETrue); |
|
986 } |
|
987 |
|
988 void CFsMessageRequest::Set(const TOperation& aOperation) |
|
989 { |
|
990 iOperation=const_cast<TOperation*>(&aOperation); |
|
991 } |
|
992 |
|
993 void CFsMessageRequest::Process() |
|
994 // |
|
995 // Process the request - (passing to a plugin or a drive thread) |
|
996 // |
|
997 { |
|
998 __THRD_PRINT3(_L("CFsMessageRequest::Process() req %08x state %d plugin 0x%x"), this, iReqState, iCurrentPlugin); |
|
999 |
|
1000 // initialise request - if not initialised already |
|
1001 if (iReqState == EReqStateInitialise) |
|
1002 { |
|
1003 TInt r = DoInitialise(); |
|
1004 if (r == EReqActionComplete) |
|
1005 { |
|
1006 return; |
|
1007 } |
|
1008 else if (r == EReqActionBusy) // request postponed ? |
|
1009 { |
|
1010 SetState(EReqStateInitialise); |
|
1011 Dispatch(EFalse); |
|
1012 return; |
|
1013 } |
|
1014 else if (r == KErrNone && iCurrentPlugin) // dispatch to plugin thread ? |
|
1015 { |
|
1016 Dispatch(EFalse); |
|
1017 return; |
|
1018 } |
|
1019 } |
|
1020 |
|
1021 if(iCurrentPlugin) |
|
1022 { |
|
1023 if (IsPostOperation()) |
|
1024 { |
|
1025 ProcessPostOperation(); |
|
1026 return; |
|
1027 } |
|
1028 |
|
1029 if(!IsPluginSpecific()) |
|
1030 { |
|
1031 ProcessPreOperation(); |
|
1032 return; |
|
1033 } |
|
1034 } |
|
1035 |
|
1036 |
|
1037 // Is there a PostInitialise function ? |
|
1038 if (iReqState == EReqStatePostInitialise) |
|
1039 { |
|
1040 TInt r = PostInitialise(); |
|
1041 if (r == EReqActionComplete) |
|
1042 { |
|
1043 return; |
|
1044 } |
|
1045 else if (r == EReqActionBusy) // request postponed ? |
|
1046 { |
|
1047 SetState(EReqStatePostInitialise); |
|
1048 Dispatch(EFalse); |
|
1049 return; |
|
1050 } |
|
1051 } |
|
1052 |
|
1053 ProcessDriveOperation(); |
|
1054 } |
|
1055 |
|
1056 void CFsMessageRequest::ProcessPostOperation() |
|
1057 // |
|
1058 // Process the message in post operation mode (handled by the current plugin) |
|
1059 // |
|
1060 { |
|
1061 TInt err = KErrNone; |
|
1062 if(!iCurrentPlugin->IsPluginThread(*this)) |
|
1063 { |
|
1064 // The request hasn't come from this plugin so it's safe to dispatch |
|
1065 TFsPluginRequest request(this); |
|
1066 TRAPD(leaveValue, err = iCurrentPlugin->DoRequestL(request)); |
|
1067 if(leaveValue != KErrNone) |
|
1068 { |
|
1069 Panic(KFsClient,leaveValue); |
|
1070 if(iOperation->IsOpenSubSess()) |
|
1071 RequestAllocator::OpenSubFailed(Session()); |
|
1072 Free(); |
|
1073 return; |
|
1074 } |
|
1075 |
|
1076 if(!IsExpectedResult(err)) |
|
1077 { |
|
1078 Complete(err); |
|
1079 return; |
|
1080 } |
|
1081 } |
|
1082 |
|
1083 // Find the previous plugin in the chain and dispatch |
|
1084 // - If no more plugins are interested in this message, then complete |
|
1085 FsPluginManager::PrevPlugin(iCurrentPlugin, this, ETrue); |
|
1086 if(iCurrentPlugin == NULL) |
|
1087 { |
|
1088 Complete(GetError()); |
|
1089 return; |
|
1090 } |
|
1091 |
|
1092 Dispatch(); |
|
1093 return; |
|
1094 } |
|
1095 |
|
1096 |
|
1097 void CFsMessageRequest::ProcessPreOperation() |
|
1098 // |
|
1099 // Process the message in pre operation mode (handled by the current plugin) |
|
1100 // |
|
1101 { |
|
1102 TInt err = KErrNone; |
|
1103 if(!iCurrentPlugin->IsPluginThread(*this)) |
|
1104 { |
|
1105 // The request hasn't come from this plugin so it's safe to dispatch |
|
1106 TFsPluginRequest request(this); |
|
1107 TRAPD(leaveValue, err = iCurrentPlugin->DoRequestL(request)); |
|
1108 __PLUGIN_PRINT1(_L("PLUGIN: CFsMessageRequest:: %x processed by plugin"), this); |
|
1109 |
|
1110 if((iOperation->Function() == EFsDismountPlugin) && (err != KErrPermissionDenied)) |
|
1111 { |
|
1112 TRAP(leaveValue, err = iOperation->DoRequestL(this)); |
|
1113 } |
|
1114 |
|
1115 if(leaveValue != KErrNone) |
|
1116 { |
|
1117 Panic(KFsClient,leaveValue); |
|
1118 if(iOperation->IsOpenSubSess()) //this should be close subsession |
|
1119 RequestAllocator::OpenSubFailed(Session()); //need a close subsession fail |
|
1120 Free(); |
|
1121 return; |
|
1122 } |
|
1123 } |
|
1124 |
|
1125 if(err == KErrNone) |
|
1126 { |
|
1127 // Find the next plugin in the chain and dispatch |
|
1128 // - If no more plugins are interested in this message, |
|
1129 // then Dispatch() will process the request in drive/main thread context. |
|
1130 FsPluginManager::NextPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1131 if(iCurrentPlugin && IsPostOperation()) |
|
1132 SetPostOperation(EFalse); |
|
1133 Dispatch(); |
|
1134 return; |
|
1135 } |
|
1136 // KErrCompletion may be returned by the plugin to |
|
1137 // indicate that it has process the message itself (do post-intercept) |
|
1138 else if (err == KErrCompletion) |
|
1139 { |
|
1140 // Find the previous plugin in the chain and dispatch |
|
1141 // - If no more plugins are interested in this message, then complete |
|
1142 FsPluginManager::PrevPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1143 if(iCurrentPlugin != NULL) |
|
1144 { |
|
1145 SetPostOperation(ETrue); |
|
1146 err = KErrNone; |
|
1147 Dispatch(); |
|
1148 return; |
|
1149 } |
|
1150 else |
|
1151 { |
|
1152 err = KErrNone; |
|
1153 } |
|
1154 } |
|
1155 |
|
1156 Complete(err); |
|
1157 return; |
|
1158 } |
|
1159 |
|
1160 |
|
1161 void CFsMessageRequest::ProcessDriveOperation() |
|
1162 // |
|
1163 // Process the message in drive (or main thread) context |
|
1164 // |
|
1165 { |
|
1166 |
|
1167 // A new request is to be processed - kick off the inactivity/finalisation timer... |
|
1168 FsThreadManager::StartFinalisationTimer(iDriveNumber); |
|
1169 |
|
1170 TInt err = KErrNone; |
|
1171 |
|
1172 TRAPD(leaveValue, err = iOperation->DoRequestL(this)); |
|
1173 |
|
1174 // Cancel hung state if a request from the drive thread has finished |
|
1175 FsThreadManager::SetDriveHung(DriveNumber(), EFalse); |
|
1176 |
|
1177 if(leaveValue != KErrNone) |
|
1178 { |
|
1179 Panic(KFsClient,leaveValue); |
|
1180 if(iOperation->IsOpenSubSess()) |
|
1181 RequestAllocator::OpenSubFailed(Session()); |
|
1182 Free(); |
|
1183 return; |
|
1184 } |
|
1185 |
|
1186 // request postponed ? (e.g. if a page used by file cache is busy, |
|
1187 // or because of fair scheduling). |
|
1188 if (err == EReqActionBusy) |
|
1189 { |
|
1190 Dispatch(); |
|
1191 return; |
|
1192 } |
|
1193 |
|
1194 iLastError = err; |
|
1195 |
|
1196 if(!IsExpectedResult(err) || IsPluginSpecific()) |
|
1197 { |
|
1198 // no need to call DoNotify here since that requires err==KErrNone |
|
1199 Complete(err); |
|
1200 return; |
|
1201 } |
|
1202 |
|
1203 SetError(err); |
|
1204 |
|
1205 |
|
1206 // Start issuing the post-operation requests starting from the bottom of the chain |
|
1207 iCurrentPlugin = NULL; |
|
1208 if (PostInterceptEnabled()) |
|
1209 { |
|
1210 FsPluginManager::PrevPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1211 if(iCurrentPlugin && !iCurrentPlugin->IsPluginThread(*this)) |
|
1212 { |
|
1213 SetPostOperation(ETrue); |
|
1214 if (DispatchToPlugin()) |
|
1215 return; |
|
1216 } |
|
1217 } |
|
1218 |
|
1219 Complete(GetError()); |
|
1220 return; |
|
1221 } |
|
1222 |
|
1223 void CFsMessageRequest::Complete(TInt aError) |
|
1224 // |
|
1225 // |
|
1226 // |
|
1227 { |
|
1228 __THRD_PRINT2(_L("----- CFsMessageRequest::Complete() req %08x with %d"), this, aError); |
|
1229 |
|
1230 if (aError==KErrNoMemory) |
|
1231 { |
|
1232 if (iDrive) // Not all message requests are associated with a drive! |
|
1233 { |
|
1234 TDriveInfo di; |
|
1235 iDrive->DriveInfo(di); |
|
1236 if (di.iType == EMediaRam) |
|
1237 aError = KErrNoMemory; |
|
1238 } |
|
1239 } |
|
1240 if(aError!=KErrNone) |
|
1241 { |
|
1242 if(iOperation->IsOpenSubSess()) |
|
1243 RequestAllocator::OpenSubFailed(Session()); |
|
1244 } |
|
1245 |
|
1246 iLastError = aError; |
|
1247 |
|
1248 // Call the current MessageOp's completion routine - if this returns EReqActionComplete, |
|
1249 // then pop the request and call the next MessageOps's completion routine. |
|
1250 // Do this until there are no more MessageOp's on the stack. |
|
1251 // |
|
1252 // Completion return codes: |
|
1253 // EReqActionOwnedByPlugin: DON'T dispatch message again, DON'T complete message |
|
1254 // EReqActionComplete: DON'T dispatch message again, DO complete message |
|
1255 // EReqActionContinue: DO dispatch message again, DON'T complete message |
|
1256 // EReqActionBusy DO dispatch message again, DON'T complete message, |
|
1257 TInt completeErr; |
|
1258 |
|
1259 for (completeErr = EReqActionComplete; CurrentOperationPtr() != NULL && completeErr == EReqActionComplete; ) |
|
1260 { |
|
1261 // Get the completion routine from the current TMsgOperation and then pop it |
|
1262 TFsRequestFunc doComplete = CurrentOperation().iComplete; |
|
1263 PopOperation(); |
|
1264 |
|
1265 // Check that a completion routine is supplied if this isn't the last TMsgOperation |
|
1266 __ASSERT_ALWAYS(iCurrentOperation == NULL || doComplete != NULL, Fault(EBadOperationIndex)); |
|
1267 |
|
1268 // Call the completion routine |
|
1269 if (doComplete) |
|
1270 completeErr = doComplete(this); |
|
1271 |
|
1272 // Check return code is valid |
|
1273 __ASSERT_DEBUG(completeErr == EReqActionContinue || completeErr == EReqActionBusy || completeErr == EReqActionComplete || completeErr == EReqActionOwnedByPlugin, Fault(EBadOperationCompletionCode)); |
|
1274 } |
|
1275 |
|
1276 // a set of flags to determine what actions to take for each return code |
|
1277 enum |
|
1278 { |
|
1279 EDispatch = 0x01, // dispatch request |
|
1280 EComplete = 0x02, // complete request |
|
1281 EFree =0x04, // free request |
|
1282 EResetPostInitialised = 0x08, // call iPostInitialise again |
|
1283 EDispatchToFront = 0x10 // dispatch to back of drive thread queue |
|
1284 }; |
|
1285 const TUint actions[8] = |
|
1286 { |
|
1287 // 0 - EReqActionContinue |
|
1288 EDispatch, |
|
1289 // 1 - unused |
|
1290 0, |
|
1291 // 2 - unused |
|
1292 0, |
|
1293 // 3 - unused |
|
1294 0, |
|
1295 // 4 - EReqActionCompleteAndDispatch |
|
1296 EDispatch | EComplete | EResetPostInitialised | EDispatchToFront, |
|
1297 // 5 - EReqActionOwnedByPlugin |
|
1298 0, |
|
1299 // 6 - EReqActionBusy |
|
1300 EDispatch | EResetPostInitialised, |
|
1301 // 7 - EReqActionComplete |
|
1302 EComplete | EFree, |
|
1303 }; |
|
1304 |
|
1305 TUint actionFlags = actions[((TUint32) completeErr) & 0x00000007]; |
|
1306 |
|
1307 // To dispatch to drive thread and intercept before DoRequestL() |
|
1308 // we must re-call iPostInitialise(), so reset iPostInitialised flag |
|
1309 if (actionFlags & EResetPostInitialised) |
|
1310 { |
|
1311 // can only postpone the request if there's a PostInitialise() function |
|
1312 __ASSERT_DEBUG(iOperation->iPostInitialise , Fault(EBadOperationCompletionCode)); |
|
1313 SetState(EReqStatePostInitialise); |
|
1314 } |
|
1315 |
|
1316 |
|
1317 |
|
1318 TInt dispatchError = KErrNone; |
|
1319 TBool completeMessage = (iLastError != KErrNone) || (iIsCompleted && (actionFlags & EComplete)); |
|
1320 |
|
1321 // Need to lock drive to prevent both file server and drive thread from completing the same message (!) |
|
1322 // or the dispatched thread from freeing the message before the first thread has completed it |
|
1323 TDrive* drive = iDrive; |
|
1324 if (drive) |
|
1325 drive->Lock(); |
|
1326 |
|
1327 // don't go back up plugin chain once message has been completed |
|
1328 if (completeMessage) |
|
1329 EnablePostIntercept(EFalse); |
|
1330 |
|
1331 if (actionFlags & EDispatch) |
|
1332 { |
|
1333 __ASSERT_DEBUG(((actionFlags & EFree) == 0), Fault(EInvalidCompletionFlags)); |
|
1334 __ASSERT_DEBUG (iCurrentPlugin == NULL, Fault(EInvalidMsgState)); |
|
1335 dispatchError = DispatchToDrive(EFalse, actionFlags & EDispatchToFront); |
|
1336 } |
|
1337 |
|
1338 |
|
1339 if ((actionFlags & EComplete) && IsExpectedResult(iLastError) && !IsPluginSpecific() && !IsNotifierSpecific()) |
|
1340 DoNotify(KErrNone); |
|
1341 |
|
1342 |
|
1343 if (completeMessage) |
|
1344 { |
|
1345 iIsCompleted = EFalse; |
|
1346 TInt msgHandle = Message().Handle(); |
|
1347 if ((msgHandle != KLocalMessageHandle) && (msgHandle != 0)) |
|
1348 Message().Complete(iLastError); |
|
1349 if (IsPluginRequest()) |
|
1350 CFsPlugin::Complete(this, iLastError); |
|
1351 } |
|
1352 |
|
1353 if(iOperation->Function() == EFsFileSubClose) |
|
1354 { |
|
1355 HBufC* pFileName = (HBufC*) I64HIGH(ScratchValue64()); |
|
1356 if(pFileName) |
|
1357 { |
|
1358 delete pFileName; |
|
1359 SetScratchValue(NULL); |
|
1360 } |
|
1361 } |
|
1362 |
|
1363 if (drive) |
|
1364 drive->UnLock(); |
|
1365 |
|
1366 if (actionFlags & EFree) |
|
1367 Free(); |
|
1368 |
|
1369 // if the dispatch failed, then continue with popping MessageOps from the stack. |
|
1370 if (dispatchError != KErrNone) |
|
1371 Complete(dispatchError); |
|
1372 } |
|
1373 |
|
1374 void CFsMessageRequest::DoNotify(TInt aError) |
|
1375 // |
|
1376 // |
|
1377 // |
|
1378 { |
|
1379 __PRINT1(_L("----- CFsMessageRequest::DoNotify() with %d"),aError); |
|
1380 |
|
1381 TInt driveNumber = DriveNumber(); |
|
1382 |
|
1383 if(aError==KErrNone) |
|
1384 { |
|
1385 if(!(FsNotify::IsChangeQueEmpty(driveNumber))) |
|
1386 FsNotify::HandleChange(this,driveNumber); |
|
1387 if ((driveNumber != KDriveInvalid) && !(FsNotify::IsDiskSpaceQueEmpty(driveNumber))) |
|
1388 FsNotify::HandleDiskSpace(this, DriveNumber()); |
|
1389 |
|
1390 #ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
|
1391 if (iOperation->iFunction == EFsFileWrite) |
|
1392 { |
|
1393 CFileShare* share = (CFileShare*) this->ScratchValue(); |
|
1394 CFileCB* file = &share->File(); |
|
1395 CFileCache* fileCache = file->FileCache(); |
|
1396 |
|
1397 // Manage notifications for write with no cache or a write-through |
|
1398 if (!fileCache || !fileCache->IsDirty()) |
|
1399 { |
|
1400 FsNotificationManager::HandleChange((CFsClientMessageRequest&)*this); |
|
1401 } |
|
1402 } |
|
1403 else if((iOperation->iFunction == EFsFileWriteDirty) && FsNotificationManager::IsInitialised()) |
|
1404 { |
|
1405 CFileShare* share; |
|
1406 CFileCB* file; |
|
1407 GetFileFromScratch(this, share, file); |
|
1408 |
|
1409 TFileName path; |
|
1410 path.Append(file->DriveNumber() + 'A'); |
|
1411 path.Append(':'); |
|
1412 path.Append(file->FileName().Des()); |
|
1413 |
|
1414 // Manage notifications for write with caching enabled |
|
1415 FsNotificationManager::HandleChange((CFsClientMessageRequest*)this, path, TFsNotification::EFileChange); |
|
1416 } |
|
1417 else if(IsNotifierSupported()) |
|
1418 { |
|
1419 FsNotificationManager::HandleChange((CFsClientMessageRequest&)*this); |
|
1420 } |
|
1421 #endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION |
|
1422 } |
|
1423 } |
|
1424 |
|
1425 |
|
1426 void CFsMessageRequest::Free() |
|
1427 // |
|
1428 // |
|
1429 // |
|
1430 { |
|
1431 __THRD_PRINT1(_L("CFsMessageRequest::Free() isAllocated=%d"), IsAllocated()); |
|
1432 |
|
1433 SetScratchValue(0); // this should close the CFsObject |
|
1434 |
|
1435 if(!IsAllocated()) |
|
1436 delete(this); |
|
1437 else iOperation = NULL; |
|
1438 |
|
1439 } |
|
1440 |
|
1441 TInt CFsMessageRequest::DoInitialise() |
|
1442 // |
|
1443 // returns KErrNone if Initialise succeeded normally |
|
1444 // or EReqActionComplete if request completed already |
|
1445 // or EReqActionBusy if request needs dispatching & initialising again |
|
1446 // |
|
1447 { |
|
1448 TInt r = KErrNone; |
|
1449 |
|
1450 SetState(iOperation->iPostInitialise ? EReqStatePostInitialise : EReqStateDoRequest); |
|
1451 r=Initialise(); |
|
1452 if(r==KErrBadHandle) |
|
1453 { |
|
1454 // bad subsession handle so panic client |
|
1455 _LIT(KPanic,"Panic"); |
|
1456 Panic(KPanic,r); |
|
1457 if(iOperation->IsOpenSubSess()) //this should be close subsession |
|
1458 RequestAllocator::OpenSubFailed(Session()); //need a close subsession fail |
|
1459 Free(); |
|
1460 r = EReqActionComplete; |
|
1461 } |
|
1462 else if (r == EReqActionComplete) // completed synchronously in Initialise() function ? |
|
1463 { |
|
1464 Complete(KErrNone); |
|
1465 } |
|
1466 else if (r == EReqActionBusy || r == EReqActionPending) // request postponed or owned by file share ? |
|
1467 { |
|
1468 } |
|
1469 else if (r != KErrNone) // error |
|
1470 { |
|
1471 Complete(r); |
|
1472 r = EReqActionComplete; |
|
1473 } |
|
1474 |
|
1475 return r; |
|
1476 } |
|
1477 |
|
1478 TInt CFsMessageRequest::PostInitialise() |
|
1479 // |
|
1480 // returns KErrNone if PostInitialise() succeeded normally |
|
1481 // or EReqActionComplete if request completed already |
|
1482 // or EReqActionBusy if request needs dispatching & initialising again |
|
1483 // |
|
1484 { |
|
1485 TInt r = KErrNone; |
|
1486 |
|
1487 SetState(EReqStateDoRequest); |
|
1488 if (iOperation->iPostInitialise) |
|
1489 r = iOperation->iPostInitialise(this); |
|
1490 if (r == EReqActionComplete) // completed early ? |
|
1491 { |
|
1492 |
|
1493 // Start issuing the post-operation requests starting from the bottom of the chain |
|
1494 iCurrentPlugin = NULL; |
|
1495 if (PostInterceptEnabled()) |
|
1496 { |
|
1497 FsPluginManager::PrevPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1498 if(iCurrentPlugin && !iCurrentPlugin->IsPluginThread(*this)) |
|
1499 { |
|
1500 SetPostOperation(ETrue); |
|
1501 Dispatch(); |
|
1502 return r; // EReqActionComplete |
|
1503 } |
|
1504 } |
|
1505 |
|
1506 Complete(KErrNone); |
|
1507 } |
|
1508 else if (r == EReqActionBusy) // request postponed ? |
|
1509 { |
|
1510 } |
|
1511 else if (r != KErrNone) // error |
|
1512 { |
|
1513 Complete(r); |
|
1514 r = EReqActionComplete; |
|
1515 } |
|
1516 |
|
1517 return r; |
|
1518 } |
|
1519 |
|
1520 |
|
1521 // CFsMessageRequest::Dispatch() |
|
1522 // |
|
1523 // If aInitialise is EFalse, just disptach request to appropriate thread - |
|
1524 // don't call DoInitialise() or PostInitialise() |
|
1525 // |
|
1526 void CFsMessageRequest::Dispatch(TBool aInitialise, TBool aLowPriority, TBool aDispatchToFront) |
|
1527 { |
|
1528 __THRD_PRINT1(_L("CFsMessageRequest::Dispatch() req %08x"), this); |
|
1529 |
|
1530 TInt r = KErrNone; |
|
1531 |
|
1532 if (iReqState == EReqStateInitialise && aInitialise) |
|
1533 { |
|
1534 r = DoInitialise(); |
|
1535 if (r == EReqActionComplete) |
|
1536 { |
|
1537 return; |
|
1538 } |
|
1539 else if (r == EReqActionBusy) // request postponed ? |
|
1540 { |
|
1541 SetState(EReqStateInitialise); // reinitialize when request is next processed |
|
1542 } |
|
1543 else if (r == EReqActionPending) // owned by file share ? |
|
1544 { |
|
1545 SetState(EReqStateInitialise); // reinitialize when request is next processed |
|
1546 return; |
|
1547 } |
|
1548 if(!IsPluginSpecific() && (iOwnerPlugin == NULL)) |
|
1549 { |
|
1550 iCurrentPlugin = NULL; |
|
1551 iClientThreadId = 0; |
|
1552 FsPluginManager::NextPlugin(iCurrentPlugin, this, (TBool)ETrue); |
|
1553 |
|
1554 // find out whether there is a plugin registered to post intercept this message |
|
1555 CFsPlugin* postInterceptPlugin = NULL; |
|
1556 if (iCurrentPlugin == NULL) |
|
1557 FsPluginManager::PrevPlugin(postInterceptPlugin, this, (TBool)ETrue); |
|
1558 |
|
1559 // Save the client's thread Id for subsequent testing by CFsPlugin::IsPluginThread() - doing so on the fly |
|
1560 // is risky because some messages are completed early in which case Message().Client() will result in a panic |
|
1561 if ((iCurrentPlugin || postInterceptPlugin) && Message().Handle() != NULL && Message().Handle() != KLocalMessageHandle) |
|
1562 { |
|
1563 RThread thread; |
|
1564 Message().Client(thread, EOwnerThread); |
|
1565 iClientThreadId = thread.Id(); |
|
1566 thread.Close(); |
|
1567 } |
|
1568 } |
|
1569 } // initialise |
|
1570 |
|
1571 |
|
1572 // dispatch to plugin thread if initialised (otherwise dispatch to drive thread) |
|
1573 if (iReqState > EReqStateInitialise && DispatchToPlugin()) |
|
1574 { |
|
1575 __PLUGIN_PRINT1(_L("PLUGIN: CFsMessageRequest %x dispatched to plugin (async)"), this); |
|
1576 // The request has been delivered to the plugin thread |
|
1577 // - leave the main thread now and await asynchronous completion |
|
1578 return; |
|
1579 } |
|
1580 |
|
1581 |
|
1582 // Is there a PostInitialise function ? |
|
1583 if (iReqState == EReqStatePostInitialise && aInitialise && r == KErrNone) |
|
1584 { |
|
1585 TInt r = PostInitialise(); |
|
1586 if (r == EReqActionComplete) |
|
1587 return; |
|
1588 else if (r == EReqActionBusy) // request postponed ? |
|
1589 SetState(EReqStatePostInitialise); // reinitialize when request is next processed |
|
1590 } |
|
1591 |
|
1592 |
|
1593 if(!IsSeparateThread() || FsThreadManager::IsDriveSync(DriveNumber(),EFalse)) |
|
1594 { |
|
1595 __PLUGIN_PRINT1(_L("PLUGIN: CFsMessageRequest %x dispatched to plugin (sync)"), this); |
|
1596 FsPluginManager::DispatchSync(this); |
|
1597 return; |
|
1598 } |
|
1599 |
|
1600 r = DispatchToDrive(aLowPriority, aDispatchToFront); |
|
1601 if (r != KErrNone) |
|
1602 Complete(r); |
|
1603 } |
|
1604 |
|
1605 inline TInt CFsMessageRequest::DispatchToDrive(TBool aLowPriority, TBool aDispatchToFront) |
|
1606 { |
|
1607 TInt drivenumber = DriveNumber(); |
|
1608 |
|
1609 if (drivenumber < EDriveA || drivenumber > EDriveZ) |
|
1610 return KErrNotSupported; |
|
1611 |
|
1612 FsThreadManager::LockDrive(drivenumber); |
|
1613 |
|
1614 CDriveThread* dT=NULL; |
|
1615 TInt r = FsThreadManager::GetDriveThread(drivenumber,&dT); |
|
1616 |
|
1617 if(r == KErrNone) |
|
1618 { |
|
1619 CRequestThread* pT = (CRequestThread*)dT; |
|
1620 |
|
1621 if (FsThreadManager::IsDriveHung(drivenumber)) |
|
1622 r = KErrNotReady; |
|
1623 else if (aDispatchToFront) |
|
1624 pT->DeliverFront(this); |
|
1625 else |
|
1626 pT->DeliverBack(this, aLowPriority); |
|
1627 } |
|
1628 else if (r == KErrAccessDenied) |
|
1629 { |
|
1630 Process(); |
|
1631 } |
|
1632 |
|
1633 FsThreadManager::UnlockDrive(drivenumber); |
|
1634 |
|
1635 return r; |
|
1636 } |
|
1637 |
|
1638 void CFsMessageRequest::Dispatch() |
|
1639 { |
|
1640 Dispatch(ETrue); |
|
1641 } |
|
1642 |
|
1643 TBool CFsMessageRequest::DispatchToPlugin() |
|
1644 // |
|
1645 // Common route: Receive -> Process -> Dispatch -> DispatchToPlugin |
|
1646 // |
|
1647 { |
|
1648 TInt drivenumber = DriveNumber(); |
|
1649 if(iCurrentPlugin) |
|
1650 { |
|
1651 FOREVER |
|
1652 { |
|
1653 // if we've reached a plugin which is waiting for Complete(), stop going up the plugin chain |
|
1654 if(drivenumber >= 0 && IsPostOperation() && CurrentPluginWaiting()) |
|
1655 { |
|
1656 // No more plug-ins need to process this request |
|
1657 iCurrentPlugin = NULL; |
|
1658 } |
|
1659 |
|
1660 while(iCurrentPlugin && iCurrentPlugin->IsPluginThread(*this)) |
|
1661 { |
|
1662 // Skip the current plugin if the request originated from the plugin |
|
1663 if(IsPostOperation()) |
|
1664 { |
|
1665 FsPluginManager::PrevPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1666 } |
|
1667 else |
|
1668 { |
|
1669 FsPluginManager::NextPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1670 } |
|
1671 } |
|
1672 |
|
1673 if(iCurrentPlugin) |
|
1674 { |
|
1675 TFsPluginRequest request(this); |
|
1676 __THRD_PRINT1(_L("CFsMessageRequest::DispatchToPlugin() req %08x"), this); |
|
1677 |
|
1678 TInt err = iCurrentPlugin->Deliver(request); |
|
1679 if(err == KErrNone) |
|
1680 { |
|
1681 |
|
1682 // The request has been delivered to the plugin thread |
|
1683 // - leave the main thread now |
|
1684 return(ETrue); |
|
1685 } |
|
1686 else if(err < KErrNone) |
|
1687 { |
|
1688 // An error has occurred |
|
1689 // - complete the message |
|
1690 Complete(err); |
|
1691 return(ETrue); |
|
1692 } |
|
1693 else if(err == KPluginMessageForward) |
|
1694 { |
|
1695 // The plugin has processed synchronously (case 1) |
|
1696 // - Pass the message on to the next plugin |
|
1697 if(FsFunction() != EFsPluginOpen) |
|
1698 { |
|
1699 FsPluginManager::NextPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1700 continue; |
|
1701 } |
|
1702 else // FsFunction == EFsPluginOpen |
|
1703 { |
|
1704 /* |
|
1705 * PluginOpen requests should not be passed down the plugin stack. |
|
1706 * |
|
1707 |
|
1708 */ |
|
1709 iCurrentPlugin = NULL; |
|
1710 continue; |
|
1711 } |
|
1712 } |
|
1713 else if(err == KPluginMessageComplete) |
|
1714 { |
|
1715 // The plugin has processed synchronously (case 2) |
|
1716 // - Pass the message back up the stack |
|
1717 SetPostOperation(ETrue); |
|
1718 FsPluginManager::PrevPlugin(iCurrentPlugin, this,(TBool)ETrue); |
|
1719 continue; |
|
1720 } |
|
1721 _LIT(KPanic,"Panic: F32-BAD-PLUGIN-ERROR"); |
|
1722 Panic(KPanic, err); |
|
1723 } |
|
1724 else if (IsPostOperation()) |
|
1725 { |
|
1726 // No more plugins are interested in this request |
|
1727 // - If in post operation, complete the request |
|
1728 Complete(GetError()); |
|
1729 return(ETrue); |
|
1730 } |
|
1731 else |
|
1732 { |
|
1733 // No plugin is registered for pre-operation interception this message |
|
1734 // - pass the request onto the drive thread. |
|
1735 return EFalse; |
|
1736 } |
|
1737 } |
|
1738 } |
|
1739 |
|
1740 if(iOperation->Function() == EFsDismountPlugin) |
|
1741 { |
|
1742 // Don't pass plugin dismounts to the drive thread |
|
1743 Process(); |
|
1744 return(ETrue); |
|
1745 } |
|
1746 |
|
1747 return EFalse; |
|
1748 } |
|
1749 |
|
1750 TDrive* CFsMessageRequest::Drive() |
|
1751 // |
|
1752 // |
|
1753 // |
|
1754 { |
|
1755 return(iDrive); |
|
1756 } |
|
1757 |
|
1758 TDrive* CFsMessageRequest::SubstedDrive() |
|
1759 // |
|
1760 // |
|
1761 // |
|
1762 { |
|
1763 return(iSubstedDrive); |
|
1764 } |
|
1765 |
|
1766 void CFsMessageRequest::SetDrive(TDrive* aDrive) |
|
1767 // |
|
1768 // |
|
1769 // |
|
1770 { |
|
1771 iDrive=aDrive; |
|
1772 if(aDrive) |
|
1773 { |
|
1774 iDriveNumber=aDrive->DriveNumber(); |
|
1775 } |
|
1776 } |
|
1777 |
|
1778 void CFsMessageRequest::SetSubstedDrive(TDrive* aDrive) |
|
1779 // |
|
1780 // |
|
1781 // |
|
1782 { |
|
1783 iSubstedDrive=aDrive; |
|
1784 } |
|
1785 |
|
1786 const RMessage2& CFsMessageRequest::Message() |
|
1787 // |
|
1788 // |
|
1789 // |
|
1790 { |
|
1791 return(iMessage); |
|
1792 } |
|
1793 |
|
1794 |
|
1795 |
|
1796 void CFsMessageRequest::ReStart() |
|
1797 { |
|
1798 __ASSERT_ALWAYS(CurrentOperationPtr() != NULL, Fault(EBadOperationIndex)); |
|
1799 |
|
1800 // restore original settings : |
|
1801 TMsgOperation& currentOperation = CurrentOperation(); |
|
1802 TInt offset = currentOperation.iReadWriteArgs.iOffset; |
|
1803 currentOperation.iReadWriteArgs.iPos-= offset; |
|
1804 currentOperation.iReadWriteArgs.iTotalLength+= offset; |
|
1805 currentOperation.iReadWriteArgs.iLength = currentOperation.iReadWriteArgs.iTotalLength; |
|
1806 currentOperation.iReadWriteArgs.iOffset = 0; |
|
1807 currentOperation.iState = 0; |
|
1808 TInt function = iOperation->Function(); |
|
1809 __ASSERT_ALWAYS(function == EFsFileRead || function == EFsFileWrite, Fault(EMsgRestartBadFunction)); |
|
1810 } |
|
1811 |
|
1812 |
|
1813 void CFsMessageRequest::SetOperationFunc(TInt aFunction) |
|
1814 { |
|
1815 const TOperation& oP = OperationArray[aFunction]; |
|
1816 Set(oP); |
|
1817 // modified because some requests were set to PostInitialise. They are set to DoRequest in Dispatch anyway, so this is possibly ok? |
|
1818 //__ASSERT_ALWAYS(iReqState == EReqStateDoRequest, Fault(EInvalidMsgState)); |
|
1819 } |
|
1820 |
|
1821 TInt CFsMessageRequest::PushOperation(TFsRequestFunc aCallback, TInt aNextState, TInt aFunction) |
|
1822 { |
|
1823 TMsgOperation* nextOperation; |
|
1824 TInt r = RequestAllocator::GetOperation(nextOperation); |
|
1825 if (r != KErrNone) |
|
1826 return r; |
|
1827 |
|
1828 |
|
1829 // Store the caller's state etc in the CURRENT TMsgOperation (if there is one) |
|
1830 if (iCurrentOperation != NULL) |
|
1831 { |
|
1832 __ASSERT_ALWAYS(aCallback, Fault(EPushOpNoCallback)); |
|
1833 iCurrentOperation->iState = aNextState; |
|
1834 iCurrentOperation->iCurrentPlugin = iCurrentPlugin; |
|
1835 iCurrentOperation->iFunction = iOperation->Function(); |
|
1836 iCurrentOperation->iNext = nextOperation; |
|
1837 nextOperation->iPrev = iCurrentOperation; |
|
1838 } |
|
1839 |
|
1840 // store the call-back routine in the NEW TMsgOperation |
|
1841 nextOperation->iComplete = aCallback; |
|
1842 nextOperation->iState = 0; |
|
1843 if (aFunction != KOperationFunctionUnaltered && aFunction != iOperation->Function()) |
|
1844 SetOperationFunc(aFunction); |
|
1845 |
|
1846 |
|
1847 iCurrentOperation = nextOperation; |
|
1848 |
|
1849 // reset post operation state: as a plugin may push more than one TMsgOperation |
|
1850 SetPostOperation(EFalse); |
|
1851 |
|
1852 return KErrNone; |
|
1853 } |
|
1854 |
|
1855 /** |
|
1856 PushOperation() |
|
1857 |
|
1858 Pushes a new TMsgOperation onto this request's "stack". After this function completes the new |
|
1859 TMsgOperation object becomes the "current" one (pointed at by CFsMessageRequest::iCurrentOperation). |
|
1860 |
|
1861 After the request has been dispatched to the drive thread, TOperation::DoRequestL() will be called. |
|
1862 When this has completed, CFsMessage::Complete() is called which then pops the new TMsgOperation |
|
1863 off the stack; and calls the callback routine (aCallback). |
|
1864 |
|
1865 @param aPos The position to read / write. Stored in the NEW TMsgOperation. |
|
1866 |
|
1867 @param aLength The length to read / write. Stored in the NEW TMsgOperation. |
|
1868 |
|
1869 @param aData A buffer to read the data from / write the data to. Stored in the NEW TMsgOperation. |
|
1870 The buffer must belong to the file server or to a plugin |
|
1871 |
|
1872 @param aOffset The offset onto the buffer to read from / write to. Stored in the NEW TMsgOperation. |
|
1873 |
|
1874 @param aCallback An optional callback routine. Stored in the OLD TMsgOperation. |
|
1875 MUST be supplied if there are one or more TMsgOperation's already on the stack |
|
1876 |
|
1877 @param aNextState State information private to the caller. Defaults to zero. Stored in the OLD TMsgOperation. |
|
1878 |
|
1879 @param aFunction An optional TFsMessage. Supplied if the caller wishes to change the TOperation |
|
1880 associated with this request. When the new TMsgOperation is popped off the stack, the |
|
1881 previous TOperation is restored. Used primarally for read-modify-write. |
|
1882 |
|
1883 */ |
|
1884 TInt CFsMessageRequest::PushOperation(TInt64 aPos, TInt aLength, TUint8* aData, TInt aOffset, TFsRequestFunc aCallback, TInt aNextState, TInt aFunction) |
|
1885 { |
|
1886 TInt r = PushOperation(aCallback, aNextState, aFunction); |
|
1887 if (r == KErrNone) |
|
1888 CurrentOperation().Set(aPos, aLength, aData, aOffset, 0); |
|
1889 return r; |
|
1890 } |
|
1891 |
|
1892 |
|
1893 /** |
|
1894 PushOperation() |
|
1895 |
|
1896 Pushes a new TMsgOperation onto this request's "stack". After this function completes the new |
|
1897 TMsgOperation object becomes the "current" one (pointed at by CFsMessageRequest::iCurrentOperation). |
|
1898 |
|
1899 After the request has been dispatched to the drive thread, TOperation::DoRequestL() will be called. |
|
1900 When this has completed, CFsMessage::Complete() is called which then pops the new TMsgOperation |
|
1901 off the stack; and calls the callback routine (aCallback). |
|
1902 |
|
1903 @param aPos The position to read / write. Stored in the NEW TMsgOperation. |
|
1904 |
|
1905 @param aLength The length to read / write. Stored in the NEW TMsgOperation. |
|
1906 |
|
1907 @param aData A buffer to read the data from / write the data to. Stored in the NEW TMsgOperation. |
|
1908 The buffer belongs to a client of the file server on the other side of an IPC boundary. |
|
1909 |
|
1910 @param aOffset The offset onto the buffer to read from / write to. Stored in the NEW TMsgOperation. |
|
1911 |
|
1912 @param aCallback An optional callback routine. Stored in the OLD TMsgOperation. |
|
1913 MUST be supplied if there are one or more TMsgOperation's already on the stack |
|
1914 |
|
1915 @param aNextState State information private to the caller. Defaults to zero. Stored in the OLD TMsgOperation. |
|
1916 |
|
1917 @param aFunction An optional TFsMessage. Supplied if the caller wishes to change the TOperation |
|
1918 associated with this request. When the new TMsgOperation is popped off the stack, the |
|
1919 previous TOperation is restored. Used primarally for read-modify-write. |
|
1920 |
|
1921 */ |
|
1922 TInt CFsMessageRequest::PushOperation(TInt64 aPos, TInt aLength, TDesC8* aData, TInt aOffset, TFsRequestFunc aCallback, TInt aNextState, TInt aFunction) |
|
1923 { |
|
1924 TInt r = PushOperation(aCallback, aNextState, aFunction); |
|
1925 if (r == KErrNone) |
|
1926 CurrentOperation().Set(aPos, aLength, aData, aOffset, 0); |
|
1927 return r; |
|
1928 } |
|
1929 |
|
1930 void CFsMessageRequest::PopOperation() |
|
1931 { |
|
1932 __ASSERT_ALWAYS(iCurrentOperation != NULL, Fault(EInvalidOperationIndex)); |
|
1933 |
|
1934 TMsgOperation* currentOperation = iCurrentOperation; |
|
1935 |
|
1936 if (iCurrentOperation->iPrev == NULL) |
|
1937 { |
|
1938 iCurrentOperation = NULL; |
|
1939 } |
|
1940 else |
|
1941 { |
|
1942 TMsgOperation* prevOperation = iCurrentOperation->iPrev; |
|
1943 prevOperation->iNext = NULL; |
|
1944 iCurrentOperation = prevOperation; |
|
1945 |
|
1946 iCurrentPlugin = iCurrentOperation->iCurrentPlugin; |
|
1947 |
|
1948 if (iCurrentOperation->iFunction != iOperation->Function()) |
|
1949 SetOperationFunc(iCurrentOperation->iFunction); |
|
1950 } |
|
1951 |
|
1952 RequestAllocator::FreeOperation(currentOperation); |
|
1953 } |
|
1954 |
|
1955 TMsgOperation& CFsMessageRequest::CurrentOperation() |
|
1956 { |
|
1957 __ASSERT_ALWAYS(iCurrentOperation != NULL, Fault(EInvalidOperationIndex)); |
|
1958 return *iCurrentOperation; |
|
1959 } |
|
1960 |
|
1961 |
|
1962 CFsClientMessageRequest::CFsClientMessageRequest() |
|
1963 : iPoolSrc (0), |
|
1964 iPoolDest(0) |
|
1965 { |
|
1966 } |
|
1967 |
|
1968 // Return ETrue if there are ANY TMsgOperation's in the stack which were pushed by iCurrentPlugin |
|
1969 // If there are any, then it's NOT OK to dispatch this message to the plugin thread as it will be |
|
1970 // waiting on a semaphore which is only cleared by Complete() |
|
1971 TBool CFsMessageRequest::CurrentPluginWaiting() |
|
1972 { |
|
1973 if (iOwnerPlugin == iCurrentPlugin) |
|
1974 return ETrue; |
|
1975 |
|
1976 // find out which plugin (if any) was the last to push a TMsgOperation |
|
1977 TMsgOperation* currentOperation; |
|
1978 |
|
1979 for (currentOperation = iCurrentOperation ? iCurrentOperation->iPrev : NULL; |
|
1980 currentOperation != NULL; |
|
1981 currentOperation = currentOperation->iPrev) |
|
1982 { |
|
1983 if (currentOperation->iCurrentPlugin == iCurrentPlugin) |
|
1984 return ETrue; |
|
1985 } |
|
1986 |
|
1987 return EFalse; |
|
1988 } |
|
1989 |
|
1990 |
|
1991 TBool CFsMessageRequest::IsPluginRequest() |
|
1992 { |
|
1993 if(iOwnerPlugin) // Check the previous operation had a plugin) |
|
1994 { |
|
1995 return ETrue; |
|
1996 } |
|
1997 return EFalse; |
|
1998 } |
|
1999 |
|
2000 |
|
2001 void CFsClientMessageRequest::Free() |
|
2002 // |
|
2003 // |
|
2004 // |
|
2005 { |
|
2006 __THRD_PRINT(_L("CFsClientMessageRequest::Free()")); |
|
2007 __ASSERT_ALWAYS(CurrentOperationPtr() == NULL, Fault(EFreeingMsgWithMsgOp)); |
|
2008 if (iPoolSrc) |
|
2009 { |
|
2010 TParsePool::Release(iPoolSrc); |
|
2011 iPoolSrc = 0; |
|
2012 } |
|
2013 |
|
2014 if (iPoolDest) |
|
2015 { |
|
2016 TParsePool::Release(iPoolDest); |
|
2017 iPoolDest = 0; |
|
2018 } |
|
2019 |
|
2020 SetScratchValue(0); // this should close the CFsObject |
|
2021 iOperation = NULL; |
|
2022 RequestAllocator::FreeRequest(this); |
|
2023 } |
|
2024 |
|
2025 |
|
2026 TInt CFsClientMessageRequest::AllocParseObjects(const TOperation& aOperation) |
|
2027 { |
|
2028 __ASSERT_ALWAYS(iPoolSrc == NULL && iPoolDest == NULL, Fault(ETParsePoolGet)); |
|
2029 |
|
2030 if (aOperation.iFlags & EParseSrc) |
|
2031 { |
|
2032 iPoolSrc = TParsePool::Get(); |
|
2033 if (iPoolSrc == NULL) |
|
2034 return KErrNoMemory; |
|
2035 } |
|
2036 if (aOperation.iFlags & EParseDst) |
|
2037 { |
|
2038 iPoolDest = TParsePool::Get(); |
|
2039 if (iPoolDest == NULL) |
|
2040 return KErrNoMemory; |
|
2041 } |
|
2042 return KErrNone; |
|
2043 } |
|
2044 |
|
2045 TParse& CFsClientMessageRequest::Src() |
|
2046 // |
|
2047 // |
|
2048 { |
|
2049 __ASSERT_ALWAYS(iPoolSrc, Fault(ETParsePoolGet)); |
|
2050 return (iPoolSrc->GetObject()); |
|
2051 } |
|
2052 |
|
2053 TParse& CFsClientMessageRequest::Dest() |
|
2054 // |
|
2055 // |
|
2056 // |
|
2057 { |
|
2058 __ASSERT_ALWAYS(iPoolDest, Fault(ETParsePoolGet)); |
|
2059 return (iPoolDest->GetObject()); |
|
2060 } |
|
2061 |
|
2062 |
|
2063 |
|
2064 TParsePool* TParsePool::iFreeHead = 0; |
|
2065 TParsePool* TParsePool::iClosedHead = 0; |
|
2066 TInt TParsePool::iCountFree = 0; |
|
2067 RFastLock TParsePool::iLock; |
|
2068 |
|
2069 |
|
2070 TParsePool::TParsePool() |
|
2071 : iNext (iFreeHead), |
|
2072 iPrev (0), |
|
2073 iFree (ETrue) |
|
2074 { |
|
2075 } |
|
2076 |
|
2077 TInt TParsePool::Init() |
|
2078 { |
|
2079 return iLock.CreateLocal(); |
|
2080 } |
|
2081 |
|
2082 TParsePool* TParsePool::Get() |
|
2083 // Gets a TParsePool object from the free list. If the free list does |
|
2084 // not contain any TParsePool objects, additional objects are manufactured. |
|
2085 // Returns NULL if unable to allocate a new object |
|
2086 { |
|
2087 iLock.Wait(); |
|
2088 |
|
2089 TParsePool* pObject = 0; |
|
2090 |
|
2091 // If we don't have anything in the free list, allocate some more... |
|
2092 if (iCountFree < 1) |
|
2093 { |
|
2094 __ASSERT_DEBUG(iFreeHead == NULL, Fault(ETParsePoolGet)); |
|
2095 for (TInt i = 0; i < KEBlockSize; i++) |
|
2096 { |
|
2097 // if allocation fails break out of the loop. |
|
2098 pObject = new TParsePool; |
|
2099 if (pObject == NULL) |
|
2100 break; |
|
2101 |
|
2102 iCountFree++; |
|
2103 |
|
2104 if (iFreeHead) |
|
2105 iFreeHead->iPrev = pObject; |
|
2106 |
|
2107 iFreeHead = pObject; |
|
2108 } |
|
2109 } |
|
2110 |
|
2111 // if we failed to allocate even a single object, return NULL |
|
2112 if (iCountFree < 1) |
|
2113 { |
|
2114 iLock.Signal(); |
|
2115 return NULL; |
|
2116 } |
|
2117 |
|
2118 |
|
2119 __ASSERT_ALWAYS(iFreeHead != NULL, Fault(ETParsePoolGet)); |
|
2120 |
|
2121 pObject = iFreeHead; |
|
2122 pObject->iFree = EFalse; |
|
2123 |
|
2124 |
|
2125 // Remove the head of the free list... |
|
2126 iFreeHead = pObject->iNext; |
|
2127 if (iFreeHead) |
|
2128 iFreeHead->iPrev = 0; |
|
2129 iCountFree--; |
|
2130 |
|
2131 // ... and add it to the closed list |
|
2132 pObject->iNext = iClosedHead; |
|
2133 pObject->iPrev = 0; |
|
2134 if (iClosedHead) |
|
2135 iClosedHead->iPrev = pObject; |
|
2136 iClosedHead = pObject; |
|
2137 |
|
2138 iLock.Signal(); |
|
2139 |
|
2140 return pObject; |
|
2141 } |
|
2142 |
|
2143 |
|
2144 void TParsePool::Release(TParsePool* aObject) |
|
2145 // |
|
2146 // Release a sub-sequence of TParsePool objects back to the free list. |
|
2147 // |
|
2148 { |
|
2149 __ASSERT_ALWAYS(aObject != NULL && !aObject->iFree, Fault(ETParsePoolGet)); |
|
2150 |
|
2151 iLock.Wait(); |
|
2152 |
|
2153 aObject->iFree = ETrue; |
|
2154 |
|
2155 // Get the objects either side of the one we're interested in |
|
2156 TParsePool* pPrevious = aObject->iPrev; |
|
2157 TParsePool* pNext = aObject->iNext; |
|
2158 |
|
2159 // Remove it from the closed list |
|
2160 if (pPrevious) |
|
2161 pPrevious->iNext = pNext; |
|
2162 else |
|
2163 iClosedHead = pNext; |
|
2164 |
|
2165 if (pNext) |
|
2166 pNext->iPrev = pPrevious; |
|
2167 |
|
2168 |
|
2169 // Now add it to the free list |
|
2170 aObject->iNext = iFreeHead; |
|
2171 aObject->iPrev = 0; |
|
2172 if (iFreeHead) |
|
2173 iFreeHead->iPrev = aObject; |
|
2174 |
|
2175 iFreeHead = aObject; |
|
2176 iCountFree++; |
|
2177 |
|
2178 iLock.Signal(); |
|
2179 } |
|
2180 |
|
2181 |
|
2182 CFsInternalRequest::CFsInternalRequest() |
|
2183 // |
|
2184 // |
|
2185 // |
|
2186 { |
|
2187 // iStatus=NULL; |
|
2188 // iIsAllocated=EFalse; |
|
2189 } |
|
2190 |
|
2191 void CFsInternalRequest::Set(const TOperation& aOperation,CSessionFs* aSession) |
|
2192 // |
|
2193 // |
|
2194 // |
|
2195 { |
|
2196 CFsRequest::Set(aOperation,aSession); |
|
2197 } |
|
2198 |
|
2199 void CFsInternalRequest::Process() |
|
2200 // |
|
2201 // |
|
2202 // |
|
2203 { |
|
2204 __THRD_PRINT(_L("CFsInternalRequest::Process()")); |
|
2205 TInt r=KErrNone; |
|
2206 TRAPD(leaveValue,r=iOperation->DoRequestL(this)); |
|
2207 // internal requests should never fail |
|
2208 __ASSERT_ALWAYS(leaveValue==KErrNone && (r==KErrNone||r==EReqActionBusy),Fault(EInternalRequestProcess)); |
|
2209 |
|
2210 // request postponed ? (e.g. if a page used by file cache is busy). |
|
2211 if (r == EReqActionBusy) |
|
2212 { |
|
2213 Dispatch(); |
|
2214 return; |
|
2215 } |
|
2216 |
|
2217 Complete(r); |
|
2218 } |
|
2219 |
|
2220 |
|
2221 void CFsInternalRequest::Complete(TInt aError) |
|
2222 // |
|
2223 // |
|
2224 // |
|
2225 { |
|
2226 __PRINT1(_L("CFsInternalRequest::Complete() with %d"),aError); |
|
2227 TInt func = Operation()->Function(); |
|
2228 if(func==KCancelSession || func==KCancelPlugin || func==KFlushDirtyData) |
|
2229 { |
|
2230 __ASSERT_DEBUG(ThreadHandle()!=0 && !FsThreadManager::IsDisconnectThread(),Fault(EInternalRequestComplete1)); |
|
2231 RThread t; |
|
2232 t.SetHandle(ThreadHandle()); |
|
2233 TRequestStatus* s=&Status(); |
|
2234 t.RequestComplete(s,aError); |
|
2235 Free(); |
|
2236 } |
|
2237 else if(func == KDispatchObjectClose) |
|
2238 { |
|
2239 TFsCloseObject::Complete(this); |
|
2240 Free(); |
|
2241 } |
|
2242 else if(func==KFileShareClose) |
|
2243 { |
|
2244 if (aError == EReqActionBusy) |
|
2245 { |
|
2246 Dispatch(); |
|
2247 } |
|
2248 else |
|
2249 { |
|
2250 TFsCloseFileShare::Complete(this); |
|
2251 Free(); |
|
2252 } |
|
2253 } |
|
2254 else |
|
2255 Fault(EInternalRequestComplete3); |
|
2256 } |
|
2257 |
|
2258 void CFsInternalRequest::Dispatch() |
|
2259 // |
|
2260 // |
|
2261 // |
|
2262 { |
|
2263 __THRD_PRINT(_L("CFsInternalRequest::Dispatch()")); |
|
2264 __ASSERT_ALWAYS(Initialise()==KErrNone,Fault(EInternalRequestDispatch1)); |
|
2265 |
|
2266 if(iCurrentPlugin && Operation()->Function() == KCancelPlugin) |
|
2267 { |
|
2268 TFsPluginRequest request(this); |
|
2269 TInt r = iCurrentPlugin->Deliver(request); |
|
2270 __ASSERT_ALWAYS(r == KErrNone, Fault(EInternalRequestDispatchCancelPlugin)); |
|
2271 } |
|
2272 else |
|
2273 { |
|
2274 TInt drivenumber = DriveNumber(); |
|
2275 FsThreadManager::LockDrive(drivenumber); |
|
2276 // shouldn't dispath if no drive available |
|
2277 __ASSERT_ALWAYS(FsThreadManager::IsDriveAvailable(drivenumber,EFalse) && !FsThreadManager::IsDriveSync(drivenumber,EFalse),Fault(EInternalRequestDispatch2)); |
|
2278 CDriveThread* dT=NULL; |
|
2279 TInt r=FsThreadManager::GetDriveThread(drivenumber,&dT); |
|
2280 __THRD_PRINT2(_L("deliver to thread 0x%x, drive number %d"),dT,drivenumber); |
|
2281 __ASSERT_ALWAYS(r==KErrNone && dT,Fault(EInternalRequestDispatch3)); |
|
2282 CRequestThread* pT = (CRequestThread*)dT; |
|
2283 TInt func = Operation()->Function(); |
|
2284 if(func == KDispatchObjectClose || func == KFileShareClose || func == KFlushDirtyData) |
|
2285 pT->DeliverBack(this); |
|
2286 else |
|
2287 pT->DeliverFront(this); |
|
2288 FsThreadManager::UnlockDrive(drivenumber); |
|
2289 } |
|
2290 } |
|
2291 |
|
2292 void CFsInternalRequest::Free() |
|
2293 // |
|
2294 // |
|
2295 // |
|
2296 { |
|
2297 __THRD_PRINT1(_L("CFsInternalRequest::Free() isAllocated=%d"),IsAllocated()); |
|
2298 |
|
2299 SetScratchValue(0); // this should close the CFsObject |
|
2300 |
|
2301 if(!IsAllocated()) |
|
2302 delete(this); |
|
2303 } |
|
2304 |
|
2305 void CFsDisconnectRequest::Dispatch() |
|
2306 // |
|
2307 // |
|
2308 // |
|
2309 { |
|
2310 __THRD_PRINT(_L("CFsDisconnectRequest::Dispatch()")); |
|
2311 // no need to lock |
|
2312 TInt r=Initialise(); |
|
2313 __ASSERT_ALWAYS(r==KErrNone,Fault(EDisconnectRequestDispatch1)); |
|
2314 CRequestThread* pT=FsThreadManager::GetDisconnectThread(); |
|
2315 __ASSERT_ALWAYS(pT,Fault(EDisconnectRequestDispatch2)); |
|
2316 pT->DeliverBack(this); |
|
2317 } |
|
2318 |
|
2319 void CFsDisconnectRequest::Process() |
|
2320 // |
|
2321 // |
|
2322 // |
|
2323 { |
|
2324 __THRD_PRINT(_L("CFsDisconnectRequest::Process()")); |
|
2325 TInt r=KErrNone; |
|
2326 TRAPD(leaveValue,r=iOperation->DoRequestL(this)); |
|
2327 leaveValue=leaveValue; // just to make compiler happy |
|
2328 __ASSERT_DEBUG(leaveValue==KErrNone && r==KErrNone,Fault(EDisonncectRequestProcess)); |
|
2329 Complete(r); |
|
2330 } |
|
2331 |
|
2332 void CFsDisconnectRequest::Complete(TInt aError) |
|
2333 // |
|
2334 // |
|
2335 // |
|
2336 { |
|
2337 __PRINT1(_L("CFsDisconnectRequest::Complete() with %d"),aError); |
|
2338 __ASSERT_ALWAYS(aError==KErrNone,Fault(EDisconnectRequestComplete)); |
|
2339 // set session disconnect reqeust to NULL |
|
2340 // will be freed in CFsMessageRequest::Free() |
|
2341 Session()->iDisconnectRequest=NULL; |
|
2342 // now delete session |
|
2343 TheFileServer->SessionQueueLockWait(); |
|
2344 delete(Session()); |
|
2345 TheFileServer->SessionQueueLockSignal(); |
|
2346 // NB Must complete the message AFTER the session has been deleted... |
|
2347 Message().Complete(aError); |
|
2348 delete(this); |
|
2349 } |
|
2350 |
|
2351 |
|
2352 /** |
|
2353 Create a new synchronous message scheduler |
|
2354 */ |
|
2355 CFsSyncMessageScheduler* CFsSyncMessageScheduler::NewL() |
|
2356 { |
|
2357 __PRINT(_L("CFsSyncMessageScheduler::NewL()")); |
|
2358 |
|
2359 CFsSyncMessageScheduler* pSelf = new(ELeave)CFsSyncMessageScheduler(); |
|
2360 |
|
2361 CleanupStack::PushL(pSelf); |
|
2362 pSelf->ConstructL(); |
|
2363 CleanupStack::Pop(); |
|
2364 |
|
2365 return(pSelf); |
|
2366 } |
|
2367 |
|
2368 |
|
2369 /** |
|
2370 Construct a synchronous message scheduler |
|
2371 */ |
|
2372 CFsSyncMessageScheduler::CFsSyncMessageScheduler() |
|
2373 : CActive(EPriorityHigh), |
|
2374 iList(_FOFF(CFsRequest,iLink)) |
|
2375 { |
|
2376 __PRINT(_L("CFsSyncMessageScheduler::CFsSyncMessageScheduler()")); |
|
2377 } |
|
2378 |
|
2379 |
|
2380 /** |
|
2381 Second-phase constructor |
|
2382 */ |
|
2383 |
|
2384 void CFsSyncMessageScheduler::ConstructL() |
|
2385 { |
|
2386 __PRINT(_L("CFsSyncMessageScheduler::ConstructL()")); |
|
2387 |
|
2388 User::LeaveIfError(iLock.CreateLocal()); |
|
2389 User::LeaveIfError(iThread.Open(RThread().Id())); |
|
2390 |
|
2391 CActiveScheduler::Add(this); |
|
2392 } |
|
2393 |
|
2394 |
|
2395 /** |
|
2396 Synchronous message scheduler |
|
2397 - dispatch any synchronous requests that were queued via ::Dispatch |
|
2398 */ |
|
2399 void CFsSyncMessageScheduler::RunL() |
|
2400 { |
|
2401 __PRINT(_L(">> CFsSyncMessageScheduler::RunL()")); |
|
2402 |
|
2403 FOREVER |
|
2404 { |
|
2405 iLock.Wait(); |
|
2406 if(iList.IsEmpty()) |
|
2407 { |
|
2408 break; |
|
2409 } |
|
2410 else |
|
2411 { |
|
2412 CFsRequest* request = iList.First(); |
|
2413 request->iLink.Deque(); |
|
2414 iLock.Signal(); |
|
2415 __PRINT1(_L(" CFsSyncMessageScheduler - Dispatching message %08x"), request); |
|
2416 request->Process(); |
|
2417 } |
|
2418 } |
|
2419 |
|
2420 iSignalled = EFalse; |
|
2421 iStatus = KRequestPending; |
|
2422 SetActive(); |
|
2423 iLock.Signal(); |
|
2424 |
|
2425 __PRINT(_L("<< CFsSyncMessageScheduler::RunL()")); |
|
2426 } |
|
2427 |
|
2428 |
|
2429 /** |
|
2430 DoCancel - Not Implemented |
|
2431 */ |
|
2432 void CFsSyncMessageScheduler::DoCancel() |
|
2433 { |
|
2434 __PRINT(_L("CFsSyncMessageScheduler::DoCancel")); |
|
2435 } |
|
2436 |
|
2437 |
|
2438 /** |
|
2439 Queue synchronous requests to be processed in main thread context |
|
2440 - called when synchronous messages are passed from plugin threads |
|
2441 */ |
|
2442 void CFsSyncMessageScheduler::Dispatch(CFsRequest* aRequest) |
|
2443 { |
|
2444 __PRINT1(_L("CFsSyncMessageScheduler::Dispatch(%08x)"), aRequest); |
|
2445 |
|
2446 // Accquire lock and add request to queue. |
|
2447 iLock.Wait(); |
|
2448 iList.AddFirst(*aRequest); |
|
2449 |
|
2450 if(!iSignalled) |
|
2451 { |
|
2452 // set iSignalled in case another thread (plug-in) is calling dispatch, then release lock. |
|
2453 iSignalled = ETrue; |
|
2454 iLock.Signal(); |
|
2455 |
|
2456 // signal main thread. |
|
2457 TRequestStatus* s = &iStatus; |
|
2458 iThread.RequestComplete(s, KErrNone); |
|
2459 } |
|
2460 else |
|
2461 { |
|
2462 // main thread already signalled, just release lock. |
|
2463 iLock.Signal(); |
|
2464 } |
|
2465 } |
|
2466 |
|
2467 |
|
2468 /** |
|
2469 Complete outstanding requests for the specified session |
|
2470 */ |
|
2471 void CFsSyncMessageScheduler::CompleteSessionRequests(CSessionFs* aSession, TInt aValue) |
|
2472 { |
|
2473 __PRINT2(_L("FsPluginManager::CompleteSessionRequests(%08x, %d)"), aSession, aValue); |
|
2474 |
|
2475 iLock.Wait(); |
|
2476 TDblQueIter<CFsRequest> q(iList); |
|
2477 CFsRequest* pR; |
|
2478 while((pR=q++)!=NULL) |
|
2479 { |
|
2480 if(pR->Session()==aSession) |
|
2481 { |
|
2482 pR->iLink.Deque(); |
|
2483 pR->Complete(aValue); |
|
2484 } |
|
2485 } |
|
2486 iLock.Signal(); |
|
2487 } |
|
2488 |