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1 // Copyright (c) 1997-2009 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 // f32test\concur\cfafshmem.cpp |
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15 // Definition of the THMem class member functions. |
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16 // |
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17 // |
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18 |
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19 #include "cfafshmem.h" |
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20 |
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21 |
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22 THMem::THMem(void * aNewMemPtr) : iMemPtr(aNewMemPtr), |
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23 //iNoMess(ETrue), |
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24 //threadHandle(NO_THREAD), |
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25 iBaseOffset(KNoOffset) |
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26 /** |
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27 * Constructor. Initialises the members of THMem. |
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28 * |
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29 * @param aNewMemPtr Pointer to the memory that this THMem will |
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30 * represent |
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31 * @internalComponent |
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32 */ |
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33 |
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34 { |
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35 iMessage=NULL; |
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36 } |
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37 |
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38 |
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39 THMem::THMem(const void * aNewMemPtr,const RMessagePtr2& aMessage,int aNewOffset) |
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40 : iMemPtr((void*)aNewMemPtr), iBaseOffset(aNewOffset) |
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41 /** |
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42 * Constructor. Initialises the members of THMem. |
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43 * |
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44 * @param aNewMemPtr Pointer to the memory that this THMem will |
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45 * represent |
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46 * @param aMessage |
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47 * @param aNewOffset |
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48 * @internalComponent |
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49 */ |
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50 |
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51 { |
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52 iMessage=(RMessagePtr2*)&aMessage; |
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53 } |
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54 |
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55 |
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56 |
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57 TInt THMem::Read(void *aBuf, TUint32 aLength, TUint aOffset) const |
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58 /** |
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59 * Reads a chunk of memory from the THMem. |
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60 * |
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61 * @param aBuf goal buffer bointer |
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62 * @param aLength how many bytes that will be read from |
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63 * the THMem |
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64 * @param aOffset offset into the THMem where the function |
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65 * will start reading |
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66 * @return Error code - KErrNone on success |
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67 * @internalComponent |
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68 */ |
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69 { |
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70 if(iMessage==NULL) |
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71 { |
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72 memcpy(aBuf, ((TUint8*)iMemPtr + aOffset), (TInt)aLength); |
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73 // Always return success |
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74 return KErrNone; |
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75 } |
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76 else if ((iMessage == NULL) || (iMessage->Handle() == KLocalMessageHandle)) |
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77 { |
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78 TUint8* ptr = (TUint8*) ((TDes8*) iMemPtr)->Ptr(); |
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79 memcpy(aBuf, ptr + iBaseOffset + aOffset, (TInt)aLength); |
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80 // Always return success |
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81 return KErrNone; |
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82 } |
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83 else |
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84 { |
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85 #if defined(__SYMBIAN32__) |
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86 // Create EPOC memory representation |
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87 TPtr8 mem((TUint8*)aBuf,aLength); |
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88 |
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89 // Create EPOC memory representation |
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90 TRAPD(res,iMessage->ReadL(0,mem, iBaseOffset + aOffset)); |
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91 |
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92 // Return error code |
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93 return (TInt)res; |
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94 #else |
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95 LFFS_ASSERT(0); |
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96 return E_GENERAL; |
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97 #endif |
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98 } |
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99 } |
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100 |
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101 |
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102 |
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103 TInt THMem::Write(const void *aBuf, TUint32 aLength, TUint32 aOffset) |
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104 /** |
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105 * Writes a chunk of memory to the THMem. |
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106 * |
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107 * @param aBuf source buffer bointer |
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108 * @param aLength how many bytes that will be written to |
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109 * the THMem |
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110 * @param aOffset offset into the THMem where the function |
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111 * will start writing |
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112 * @return Error code - KErrNone on success |
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113 * @internalComponent |
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114 */ |
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115 { |
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116 if (iMessage == NULL) |
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117 { |
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118 memcpy(((TUint8*)iMemPtr + aOffset), aBuf, (TInt)aLength); |
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119 // Always return success |
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120 return KErrNone; |
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121 } |
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122 else if ((iMessage == NULL) || (iMessage->Handle() == KLocalMessageHandle)) |
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123 { |
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124 TUint8* ptr = (TUint8*) ((TDes8*) iMemPtr)->Ptr(); |
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125 memcpy(ptr + iBaseOffset + aOffset, aBuf, (TInt)aLength); |
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126 return KErrNone; |
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127 } |
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128 else |
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129 { |
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130 #if defined(__SYMBIAN32__) |
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131 // Create EPOC memory representation |
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132 TPtrC8 mem((TUint8*)aBuf,aLength); |
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133 |
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134 // Use message to write back to client thread |
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135 TRAPD( res,iMessage->WriteL(0,mem, iBaseOffset + aOffset) ); |
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136 |
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137 // Return error code |
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138 return (TInt)res; |
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139 #else |
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140 LFFS_ASSERT(0); |
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141 return E_GENERAL; |
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142 #endif |
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143 } |
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144 } |
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145 |
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146 |
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147 |