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1 #include <string.h>
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2 #include <stdio.h>
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3 #include "OSAPI.h"
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4
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5 #include "Allocator.h"
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6
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7 #include "mm7_data.h"
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8
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9
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10
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11 Allocator *pAllocator; // idb
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12
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13
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14
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15
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16
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17 void __fastcall CheckMemoryAccessibility(void *pBase, DWORD uSize);
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18
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19
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20
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21 //----- (00426755) --------------------------------------------------------
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22 void *Allocator::AllocNamedChunk(const void *pPrevPtrValue, unsigned int uSize, const char *pName)
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23 {
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24 Allocator *v4; // esi@1
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25 unsigned int v5; // eax@7
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26 void *result; // eax@8
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27 unsigned int *pNumBuffersUsed; // ebx@12
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28 unsigned int v8; // edi@15
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29 char v9; // zf@15
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30 int v10; // eax@16
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31 void **v11; // ebx@19
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32 void *v12; // eax@22
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33 unsigned int Size; // [sp+14h] [bp+Ch]@16
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34
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35 v4 = this;
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36 if ( pPrevPtrValue && !aborting_app )
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37 AbortWithError();
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38 if ( !v4->bBigBufferAllocated && !aborting_app )
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39 AbortWithError();
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40 v5 = uSize;
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41 if ( uSize )
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42 {
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43 if ( (uSize & 0x80000000u) != 0 && !aborting_app )
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44 {
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45 AbortWithError();
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46 v5 = uSize;
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47 }
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48 pNumBuffersUsed = &v4->uNumBuffersUsed;
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49 if ( v4->uNumBuffersUsed == 6000 && !aborting_app )
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50 {
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51 AbortWithError();
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52 v5 = uSize;
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53 }
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54 v8 = *pNumBuffersUsed;
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55 v9 = v4->bUseBigBuffer == 0;
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56 ++*pNumBuffersUsed;
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57 if ( v9 )
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58 {
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59 v12 = malloc(v5);
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60 v11 = (void **)((char *)v4 + 4 * v8);
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61 *v11 = v12;
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62 if ( v12 )
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63 {
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64 v4->uMemoryBuffersSizes[v8] = uSize;
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65 }
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66 else
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67 {
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68 if ( !aborting_app )
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69 AbortWithError();
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70 }
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71 }
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72 else
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73 {
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74 LOBYTE(v5) = v5 & 0xFC;
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75 v10 = v5 + 4;
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76 Size = v10;
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77 if ( v10 + v4->uNextFreeOffsetInBigBuffer > v4->uBigBufferSizeAligned )
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78 {
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79 printf("Id: %s Size: %i\n", pName, v10);
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80 CreateFileDump("Memory");
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81 if ( !aborting_app )
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82 AbortWithError();
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83 }
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84 v11 = (void **)((char *)v4 + 4 * v8);
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85 *v11 = (char *)v4->pBigMemoryBuffer + v4->uNextFreeOffsetInBigBuffer;
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86 v4->uMemoryBuffersSizes[v8] = Size;
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87 if ( pName )
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88 strncpy((char *)v4 + 4 * (3 * v8 + 12000), pName, 11u);
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89 v4->uNextFreeOffsetInBigBuffer += Size;
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90 }
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91 result = *v11;
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92 }
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93 else
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94 {
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95 result = 0;
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96 }
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97 return result;
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98 }
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99 // 720018: using guessed type int aborting_app;
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100
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101
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102
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103 //----- (004266CD) --------------------------------------------------------
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104 bool Allocator::Initialize(unsigned int uNumKBytes)
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105 {
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106 if (bBigBufferAllocated)
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107 return false;
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108
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109 if (!uNumKBytes)
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110 return false;
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111
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112 pBigMemoryBuffer = malloc(uNumKBytes * 1024);
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113 if (!pBigMemoryBuffer)
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114 return false;
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115
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116 pBigBufferAligned = (char *)pBigMemoryBuffer + -((unsigned __int16)pBigMemoryBuffer & 0xFFF) + 4096;
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117 uBigBufferSizeAligned = (uNumKBytes * 1024) - 4096;
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118
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119 uNumBuffersUsed = 0;
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120 uNextFreeOffsetInBigBuffer = 0;
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121
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122 bUseBigBuffer = true;
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123 return bBigBufferAllocated = true;
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124 }
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125
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126
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127 //----- (00426474) --------------------------------------------------------
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128 void Allocator::FreeChunk(void *ptr)
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129 {
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130 Allocator *v2; // esi@1
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131 unsigned int v3; // eax@5
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132 signed int i; // edi@5
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133 unsigned int v5; // eax@13
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134 signed int v6; // ecx@16
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135 signed int j; // edx@16
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136 char v8; // zf@20
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137
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138 v2 = this;
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139 if ( ptr )
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140 {
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141 if ( !this->bBigBufferAllocated && !aborting_app )
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142 AbortWithError();
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143 v3 = v2->uNumBuffersUsed;
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144 for ( i = 0; i < (signed int)v3; ++i )
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145 {
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146 if ( v2->pMemoryBuffers[i] == ptr )
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147 break;
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148 }
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149 if ( i >= (signed int)v3 && !aborting_app )
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150 AbortWithError();
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151 if ( !v2->bUseBigBuffer )
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152 free(v2->pMemoryBuffers[i]);
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153 v2->pMemoryBuffers[i] = 0;
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154 v2->uMemoryBuffersSizes[i] = 0;
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155 LOBYTE(v2->pMemoryBuffers[3 * i + 12000]) = 0;
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156 v5 = v2->uNumBuffersUsed;
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157 if ( i == v5 - 1 )
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158 {
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159 if ( i )
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160 {
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161 v6 = 0;
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162 for ( j = 0; j < (signed int)v5; ++j )
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163 {
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164 if ( v2->pMemoryBuffers[j] )
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165 v6 = j;
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166 }
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167 v8 = v2->bUseBigBuffer == 0;
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168 v2->uNumBuffersUsed = v6 + 1;
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169 if ( !v8 )
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170 v2->uNextFreeOffsetInBigBuffer = (char *)v2->pMemoryBuffers[v6]
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171 + v2->uMemoryBuffersSizes[v6]
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172 - v2->pBigMemoryBuffer;
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173 }
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174 else
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175 {
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176 v2->uNextFreeOffsetInBigBuffer = 0;
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177 v2->uNumBuffersUsed = 0;
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178 }
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179 }
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180 }
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181 }
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182 // 720018: using guessed type int aborting_app;
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183
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184
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185
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186 //----- (00426429) --------------------------------------------------------
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187 Allocator::Allocator()
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188 {
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189 Allocator *v1; // eax@1
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190 signed int v2; // ecx@1
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191 int v3; // edx@1
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192
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193 v1 = this;
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194 v2 = 0;
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195 v1->uBigBufferSizeAligned = 0;
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196 v1->bBigBufferAllocated = 0;
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197 v3 = (int)v1->pMemoryBuffersNames;
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198 do
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199 {
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200 v1->pMemoryBuffers[v2] = 0;
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201 v1->uMemoryBuffersSizes[v2] = 0;
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202 *(char *)v3 = 0;
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203 ++v2;
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204 v3 += 12;
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205 }
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206 while ( v2 < 6000 );
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207 v1->uDumpsCount = 0;
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208 }
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209
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210
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211 //----- (0042654C) --------------------------------------------------------
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212 bool Allocator::CreateFileDump(const char *a1)
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213 {
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214 Allocator *v2; // esi@1
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215 unsigned int v3; // ST44_4@1
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216 FILE *v4; // eax@1
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217 FILE *v5; // edi@1
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218 bool result; // eax@2
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219 unsigned int v7; // ecx@5
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220 int v8; // edx@5
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221 int v9; // eax@6
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222 int v10; // eax@8
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223 int v11; // ecx@8
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224 signed int v12; // ebx@8
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225 signed int v13; // ebx@10
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226 struct _MEMORYSTATUS memstat; // [sp+8h] [bp-38h]@5
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227 char Filename[20]; // [sp+28h] [bp-18h]@1
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228 unsigned int *v16; // [sp+3Ch] [bp-4h]@11
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229 int a1a; // [sp+48h] [bp+8h]@11
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230
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231 v2 = this;
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232 v3 = this->uDumpsCount;
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233 this->uDumpsCount = v3 + 1;
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234 sprintfex(Filename, "Mem%03i.txt", v3);
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235 v4 = fopen(Filename, "w");
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236 v5 = v4;
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237 if ( v4 )
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238 {
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239 if ( a1 )
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240 fprintf(v4, "%s\n\n", a1);
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241 fprintf(v5, "Windows Memory Status");
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242 GlobalMemoryStatus(&memstat);
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243 fprintf(v5, "dwLength: %d\n\n", memstat.dwLength);
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244 fprintf(v5, "dwMemoryLoad: %d\n", memstat.dwMemoryLoad);
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245 fprintf(v5, "dwTotalPhys: %d\n", memstat.dwTotalPhys);
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246 fprintf(v5, "dwAvailPhys: %d\n", memstat.dwAvailPhys);
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247 fprintf(v5, "dwTotalPageFile: %d\n", memstat.dwTotalPageFile);
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248 fprintf(v5, "dwAvailPageFile: %d\n", memstat.dwAvailPageFile);
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249 fprintf(v5, "dwTotalVirtual: %d\n", memstat.dwTotalVirtual);
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250 fprintf(v5, "dwAvailVirtual: %d\n\n\n", memstat.dwAvailVirtual);
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251 v7 = v2->uNumBuffersUsed;
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252 v8 = 0;
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253 if ( (signed int)v7 > 0 )
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254 {
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255 v9 = (int)v2->uMemoryBuffersSizes;
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256 do
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257 {
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258 v8 += *(int *)v9;
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259 v9 += 4;
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260 --v7;
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261 }
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262 while ( v7 );
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263 }
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264 v10 = 0;
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265 v11 = (int)v2->uMemoryBuffersSizes;
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266 v12 = 6000;
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267 do
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268 {
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269 v10 += *(int *)v11;
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270 v11 += 4;
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271 --v12;
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272 }
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273 while ( v12 );
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274 fprintf(v5, "Size: %i %i %i\n\n", v2->uNumBuffersUsed, v8, v10);
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275 v13 = 0;
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276 if ( (signed int)v2->uNumBuffersUsed > 0 )
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277 {
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278 v16 = v2->uMemoryBuffersSizes;
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279 a1a = (int)v2->pMemoryBuffersNames;
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280 do
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281 {
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282 fprintf(v5, "%10i %10i %s\n", v13, *v16, a1a);
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283 a1a += 12;
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284 ++v16;
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285 ++v13;
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286 }
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287 while ( v13 < (signed int)v2->uNumBuffersUsed );
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288 }
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289 fclose(v5);
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290 result = 0;
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291 }
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292 else
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293 {
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294 result = 1;
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295 }
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296 return result;
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297 }
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298
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299
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300
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301
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302
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303
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304
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305
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306 //----- (00426892) --------------------------------------------------------
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307 static void __fastcall CheckMemoryAccessibility(void *pBase, DWORD uSize)
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308 {
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309 DWORD v2; // edi@1
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310 DWORD i; // eax@1
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311 struct _SYSTEM_INFO SystemInfo; // [sp+8h] [bp-24h]@1
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312
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313 v2 = uSize;
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314 GetSystemInfo(&SystemInfo);
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315 for ( i = 16 * SystemInfo.dwPageSize; i < v2; i += SystemInfo.dwPageSize )
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316 ;
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317 }
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