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1 // Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // e32test\bench\t_memfnc.cpp |
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15 // |
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16 // |
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17 |
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18 #include <e32std.h> |
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19 #include <e32std_private.h> |
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20 #include <e32base.h> |
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21 #include <e32base_private.h> |
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22 |
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23 const TInt Len64K = 64*1024; |
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24 |
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25 volatile extern TInt count; |
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26 volatile extern TInt iters; |
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27 extern TInt8* trg; |
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28 extern TInt8* src; |
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29 extern TInt8 trgoffset; |
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30 extern TInt8 srcoffset; |
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31 extern TInt len; |
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32 |
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33 GLREF_C TInt PurgeCache() |
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34 { |
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35 TInt8* purgetrg; |
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36 TInt8* purgesrc; |
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37 |
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38 purgetrg=(TInt8*)User::Alloc(Len64K); |
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39 purgesrc=(TInt8*)User::Alloc(Len64K); |
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40 |
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41 Mem::Copy(purgetrg,purgesrc,Len64K); |
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42 |
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43 User::Free(purgetrg); |
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44 User::Free(purgesrc); |
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45 return 0; |
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46 } |
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47 |
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48 TInt MemBaseline(TAny*) |
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49 { |
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50 FOREVER |
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51 { |
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52 for (iters=0; iters<8192; ) |
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53 { |
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54 // eight off, unrolled for accuracy |
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55 iters++; |
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56 iters++; |
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57 iters++; |
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58 iters++; |
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59 |
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60 iters++; |
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61 iters++; |
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62 iters++; |
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63 iters++; |
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64 } |
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65 |
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66 count++; |
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67 } |
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68 } |
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69 |
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70 TInt MemCopy(TAny*) |
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71 { |
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72 FOREVER |
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73 { |
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74 Mem::Copy(trgoffset+trg,srcoffset+src,len); |
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75 count++; |
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76 } |
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77 } |
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78 |
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79 TInt MemFill(TAny*) |
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80 { |
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81 FOREVER |
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82 { |
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83 Mem::Fill(trgoffset+trg,len,42); |
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84 count++; |
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85 } |
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86 } |
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87 |
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88 TInt MemSwap(TAny*) |
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89 { |
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90 FOREVER |
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91 { |
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92 Mem::Swap(trgoffset+trg,srcoffset+src,len); |
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93 count++; |
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94 } |
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95 } |
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96 |
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97 /// For lengths smaller than the allocated size of 64K. Pointers are stepped |
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98 /// though RAM so that we never hit the cache. Stepping is done backwards to |
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99 /// foil any automatic preparation for loading of the next cache line. |
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100 TInt MemCopyUncached(TAny*) |
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101 { |
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102 TUint step = (len + 31) & (~31); // length rounded up to cache line size |
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103 |
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104 TInt8* slimit = src + 2*Len64K - step + srcoffset; |
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105 TInt8* tlimit = trg + 2*Len64K - step + trgoffset; |
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106 |
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107 TInt8* s = slimit; |
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108 TInt8* t = tlimit; |
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109 |
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110 FOREVER |
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111 { |
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112 Mem::Copy(t,s,len); |
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113 s -= step; |
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114 t -= step; |
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115 if (s < src) |
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116 { |
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117 s = slimit; |
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118 t = tlimit; |
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119 } |
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120 count++; |
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121 } |
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122 } |
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123 |
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124 // See comments for MemCopyUncached above |
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125 TInt MemFillUncached(TAny*) |
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126 { |
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127 TUint step = (len + 31) & (~31); // length rounded up to cache line size |
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128 |
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129 TInt8* tlimit = trg + 2*Len64K - step + trgoffset; |
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130 TInt8* t = tlimit; |
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131 |
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132 FOREVER |
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133 { |
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134 Mem::Fill(t,len,42); |
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135 t -= step; |
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136 if (t < trg) |
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137 t = tlimit; |
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138 count++; |
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139 } |
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140 } |
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141 |
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142 TInt WordMove(TAny*) |
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143 { |
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144 FOREVER |
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145 { |
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146 wordmove(trgoffset+trg,srcoffset+src,len); |
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147 count++; |
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148 } |
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149 } |
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150 |
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151 // See comments for MemCopyUncached above |
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152 TInt WordMoveUncached(TAny*) |
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153 { |
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154 TUint step = (len + 31) & (~31); // length rounded up to cache line size |
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155 |
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156 TInt8* slimit = src + 2*Len64K - step + srcoffset; |
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157 TInt8* tlimit = trg + 2*Len64K - step + trgoffset; |
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158 |
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159 TInt8* s = slimit; |
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160 TInt8* t = tlimit; |
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161 |
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162 FOREVER |
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163 { |
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164 wordmove(t,s,len); |
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165 s -= step; |
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166 t -= step; |
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167 if (s < src) |
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168 { |
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169 s = slimit; |
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170 t = tlimit; |
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171 } |
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172 count++; |
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173 } |
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174 } |