1 | /**************************************** |
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2 | * Computer Algebra System SINGULAR * |
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3 | ****************************************/ |
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4 | /* $Id: mmcheck.c,v 1.7 1999-06-30 14:54:11 Singular Exp $ */ |
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5 | |
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6 | /* |
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7 | * ABSTRACT: |
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8 | */ |
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9 | |
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10 | #define _POSIX_SOURCE 1 |
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11 | |
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12 | #include <stdio.h> |
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13 | #include <stdlib.h> |
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14 | #include <string.h> |
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15 | #include "mod2.h" |
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16 | |
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17 | #ifdef MDEBUG |
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18 | |
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19 | #include "mmemory.h" |
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20 | #include "mmprivate.h" |
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21 | #include "mmpage.h" |
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22 | #include "mmheap.h" |
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23 | #ifdef MTRACK |
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24 | #include "mmbt.h" |
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25 | #endif |
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26 | |
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27 | |
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28 | |
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29 | DBMCB mm_theDBused; |
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30 | DBMCB mm_theDBfree; |
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31 | |
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32 | void * mm_maxAddr = NULL; |
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33 | void * mm_minAddr = NULL; |
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34 | |
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35 | /* int mm_MDEBUG = MDEBUG; */ |
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36 | int mm_MDEBUG = 0; |
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37 | |
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38 | /********************************************************************** |
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39 | * |
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40 | * Auxillary routines |
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41 | * |
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42 | **********************************************************************/ |
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43 | |
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44 | void mmMoveDBMCB ( pDBMCB from, pDBMCB to, DBMCB * what ) |
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45 | { |
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46 | what->prev->next = what->next; |
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47 | if ( what->next != NULL ) |
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48 | what->next->prev = what->prev; |
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49 | what->prev = to; |
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50 | what->next = to->next; |
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51 | if (to->next!=NULL) |
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52 | to->next->prev=what; |
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53 | to->next = what; |
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54 | } |
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55 | |
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56 | void mmMoveDBMCBInto ( pDBMCB to, pDBMCB what ) |
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57 | { |
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58 | if (to->next !=NULL) |
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59 | { |
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60 | what->next = to->next; |
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61 | what->next->prev = what; |
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62 | } |
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63 | to->next = what; |
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64 | what->prev = to; |
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65 | } |
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66 | |
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67 | void mmTakeOutDBMCB ( pDBMCB what ) |
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68 | { |
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69 | what->prev->next = what->next; |
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70 | if ( what->next != NULL ) |
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71 | what->next->prev = what->prev; |
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72 | } |
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73 | |
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74 | void mmDBSetHeapsOfBlocks(memHeap fromheap, memHeap toheap) |
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75 | { |
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76 | memHeapPage pages = fromheap->pages; |
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77 | int nblocks = SIZE_OF_HEAP_PAGE / toheap->size; |
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78 | int i; |
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79 | |
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80 | assume(fromheap->size == toheap->size); |
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81 | while (pages != NULL) |
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82 | { |
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83 | DBMCB *what = (DBMCB*) (((char*) pages) + SIZE_OF_HEAP_PAGE_HEADER); |
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84 | |
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85 | for (i=0; i<nblocks; i++) |
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86 | { |
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87 | what->heap = toheap; |
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88 | what = (DBMCB*) (((char*) what) + toheap->size); |
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89 | } |
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90 | pages = pages->next; |
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91 | } |
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92 | } |
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93 | |
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94 | void mmDBInitNewHeapPage(memHeap heap) |
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95 | { |
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96 | DBMCB* what = (DBMCB*) heap->current; |
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97 | DBMCB* prev = NULL; |
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98 | size_t size = SizeFromRealSize(heap->size); |
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99 | |
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100 | if (mm_minAddr == 0 || mm_minAddr > (void*) what) |
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101 | mm_minAddr = (void*) what; |
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102 | |
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103 | while (what != NULL) |
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104 | { |
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105 | mmFillDBMCB(what, size, heap, MM_FREEFLAG, __FILE__, __LINE__); |
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106 | mmMoveDBMCBInto(&mm_theDBfree, what); |
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107 | prev = what; |
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108 | what = *((void**) what); |
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109 | } |
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110 | |
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111 | if (mm_maxAddr == 0 || mm_maxAddr < (void*) prev) |
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112 | mm_maxAddr = (void*) prev; |
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113 | } |
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114 | |
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115 | static int mmPrintDBMCB ( DBMCB * what, char* msg , int given_size) |
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116 | { |
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117 | (void)fprintf( stderr, "warning: %s\n", msg ); |
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118 | (void)fprintf( stderr, "block %lx %s in: %s:%d", |
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119 | (long)&(what->data), |
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120 | (what->flags & MM_FREEFLAG ? "freed" : "allocated" ), |
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121 | what->fname, what->lineno ); |
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122 | #ifdef MTRACK |
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123 | mmDBPrintStack(what, MM_PRINT_ALL_STACK); |
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124 | #else |
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125 | fprintf( stderr,"\n"); |
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126 | #endif |
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127 | if (strcmp(msg,"size")==0) |
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128 | (void)fprintf( stderr, "size is: %d, but check said %d \n", |
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129 | (int)what->size, given_size ); |
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130 | else |
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131 | (void)fprintf( stderr, "size is: %d\n", (int)what->size ); |
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132 | return 0; |
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133 | } |
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134 | |
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135 | void mmPrintUsedList( ) |
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136 | { |
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137 | DBMCB * what; |
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138 | what=mm_theDBused.next; |
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139 | fprintf(stderr,"list of used blocks:\n"); |
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140 | while (what!=NULL) |
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141 | { |
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142 | (void)fprintf( stderr, "%d bytes at %p in: %s:%d\n", |
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143 | (int)what->size, what, what->fname, what->lineno); |
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144 | what=what->next; |
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145 | } |
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146 | } |
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147 | |
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148 | void mmPrintFL( const char* fname, const int lineno ) |
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149 | { |
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150 | (void)fprintf( stderr, "occured in %s:%d\n", fname, lineno ); |
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151 | } |
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152 | |
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153 | /********************************************************************** |
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154 | * |
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155 | * Init routines |
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156 | * |
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157 | **********************************************************************/ |
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158 | |
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159 | #define MM_USED_PATTERN 255 |
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160 | #define MM_FREE_PATTERN 251 |
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161 | #define MM_FRONT_PATTERN 247 |
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162 | #define MM_BACK_PATTERN 249 |
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163 | |
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164 | void mmFillDBMCB(DBMCB* what, size_t size, memHeap heap, |
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165 | int flags, char* fname, int lineno) |
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166 | { |
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167 | void* addr = &(what->data); |
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168 | |
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169 | what->heap = heap; |
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170 | what->size = size; |
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171 | what->fname = fname; |
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172 | what->lineno = lineno; |
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173 | what->flags = flags; |
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174 | what->init = 0; |
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175 | |
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176 | if (flags & MM_FREEFLAG) |
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177 | memset(addr, MM_FREE_PATTERN, size); |
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178 | |
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179 | memset(what->front_pattern, MM_FRONT_PATTERN, MM_NUMBER_OF_FRONT_PATTERNS); |
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180 | memset((char*) addr + size, MM_BACK_PATTERN, DebugOffsetBack); |
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181 | } |
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182 | |
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183 | void mmMarkInitDBMCB() |
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184 | { |
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185 | DBMCB * what=mm_theDBused.next; |
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186 | while (what != NULL) |
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187 | { |
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188 | what->init = 1; |
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189 | what = what->next; |
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190 | } |
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191 | } |
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192 | |
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193 | /********************************************************************** |
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194 | * |
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195 | * Check routines |
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196 | * |
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197 | **********************************************************************/ |
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198 | |
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199 | static int mmCheckPattern(char* ptr, char pattern, size_t size) |
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200 | { |
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201 | int i; |
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202 | |
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203 | for (i = 0; i<size; i++) |
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204 | if (ptr[i] != pattern) return 0; |
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205 | return 1; |
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206 | } |
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207 | |
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208 | #ifdef unix |
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209 | extern int _end; |
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210 | #endif |
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211 | static int mmCheckSingleDBMCB ( DBMCB * what, int size , int flags) |
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212 | { |
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213 | char * patptr; |
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214 | int i; |
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215 | int ok=1; |
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216 | |
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217 | if ( ((long)what % 4 ) != 0 ) |
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218 | { |
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219 | fprintf( stderr, "warning: odd address\n" ); |
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220 | assume(0); |
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221 | return 0; |
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222 | } |
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223 | if ( (void*)what > mm_maxAddr ) |
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224 | { |
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225 | fprintf( stderr, "warning: address too high\n" ); |
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226 | assume(0); |
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227 | return 0; |
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228 | } |
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229 | if ( (void*)what < mm_minAddr ) |
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230 | { |
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231 | fprintf( stderr, "warning: address too low\n" ); |
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232 | assume(0); |
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233 | return 0; |
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234 | } |
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235 | if (! mmIsNotAddrOnFreePage(what)) |
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236 | { |
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237 | fprintf(stderr, "warning: address on freed page\n"); |
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238 | assume(0); |
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239 | return 0; |
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240 | } |
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241 | |
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242 | if ( ((long)what->fname<1000) |
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243 | #ifdef unix |
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244 | ||((long)what->fname>(long)&(_end)) |
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245 | #endif |
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246 | ) |
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247 | { /* fname should be in the text segment */ |
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248 | fprintf(stderr, "warning: fname (%lx) out of range\n", (long)what->fname ); |
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249 | assume(0); |
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250 | what->fname="???"; |
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251 | ok=0; |
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252 | } |
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253 | if ( (what->lineno< -9999) ||(what->lineno>9999) ) |
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254 | { |
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255 | fprintf( stderr, "warning: lineno %d out of range\n",what->lineno ); |
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256 | assume(0); |
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257 | what->lineno=0; |
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258 | ok=0; |
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259 | } |
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260 | #ifdef unix |
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261 | if ( (what->next!=NULL) |
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262 | && (((long)what->next>(long)mm_maxAddr) |
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263 | || ((long)what->next<(long)mm_minAddr) ) |
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264 | && (((long)what->next>(long)&_end) |
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265 | || ((long)what->next<1000)) |
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266 | ) |
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267 | { |
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268 | fprintf( stderr, "warning: next (%lx) out of range\n", (long)what->next ); |
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269 | assume(0); |
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270 | what->next=NULL; |
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271 | ok=0; |
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272 | } |
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273 | if ( (what->prev!=NULL) |
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274 | && (((long)what->prev>(long)mm_maxAddr) |
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275 | || ((long)what->prev<(long)mm_minAddr) ) |
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276 | && (((long)what->prev>(long)&_end) |
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277 | || ((long)what->prev<1000))) |
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278 | { |
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279 | fprintf( stderr, "warning: prev (%lx) out of range\n", (long)what->prev ); |
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280 | assume(0); |
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281 | what->prev=NULL; |
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282 | ok=0; |
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283 | } |
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284 | #endif |
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285 | |
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286 | if ( ( what->flags & flags ) != flags ) |
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287 | return mmPrintDBMCB( what, "flags", 0 ); |
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288 | |
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289 | |
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290 | if ( what->size != size ) |
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291 | return mmPrintDBMCB( what, "size", size ); |
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292 | |
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293 | i = mmGetIndex(size); |
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294 | |
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295 | if (! mmCheckPattern(what->front_pattern, MM_FRONT_PATTERN, |
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296 | MM_NUMBER_OF_FRONT_PATTERNS)) |
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297 | return mmPrintDBMCB(what , "front pattern", 0); |
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298 | if ((what->flags & MM_FREEFLAG) && |
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299 | ! mmCheckPattern((char*)&(what->data), MM_FREE_PATTERN, 0)) |
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300 | return mmPrintDBMCB(what, "free pattern", 0); |
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301 | if (! mmCheckPattern((char*) &(what->data) + size, |
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302 | MM_BACK_PATTERN, DebugOffsetBack)) |
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303 | return mmPrintDBMCB(what, "back pattern", 0); |
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304 | |
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305 | if ( ( what->next != NULL ) && ( what->next->prev != what ) ) |
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306 | { |
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307 | mmPrintDBMCB( what->next, "next", 0 ); |
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308 | what->next->prev=what; |
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309 | return mmPrintDBMCB( what, "chain:n", 0 ); |
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310 | } |
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311 | if ( ( what->prev != NULL ) && ( what->prev->next != what ) ) |
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312 | { |
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313 | mmPrintDBMCB( what->prev, "prev", 0 ); |
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314 | what->prev->next=what; |
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315 | return mmPrintDBMCB( what, "chain:p", 0 ); |
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316 | } |
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317 | if(ok==0) |
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318 | { |
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319 | return mmPrintDBMCB( what, "see above", 0 ); |
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320 | } |
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321 | |
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322 | return 1; |
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323 | } |
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324 | |
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325 | static int mmCheckDBMCBList(DBMCB * list, int flags) |
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326 | { |
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327 | assume(flags == MM_FREEFLAG || flags == MM_USEDFLAG); |
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328 | |
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329 | if (mmGListHasCycle(list, |
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330 | (void*) &(mm_theDBfree.next) - |
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331 | (void*) &(mm_theDBfree))) |
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332 | { |
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333 | fprintf(stderr, "%s list contains cycles\n", |
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334 | (flags == MM_FREEFLAG ? "Free" : "Used")); |
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335 | assume(0); |
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336 | return 0; |
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337 | } |
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338 | |
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339 | while (list != NULL) |
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340 | { |
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341 | if (! mmCheckSingleDBMCB(list, list->size, flags)) |
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342 | { |
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343 | fprintf(stderr, "while check of %s list\n", |
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344 | (flags == MM_FREEFLAG ? "free" : "used")); |
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345 | return 0; |
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346 | } |
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347 | list = list->next; |
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348 | } |
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349 | |
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350 | return 1; |
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351 | } |
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352 | |
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353 | int mmTestMemory() |
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354 | { |
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355 | if (mmCheckDBMCBList(mm_theDBused.next, MM_USEDFLAG)) |
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356 | return mmCheckDBMCBList(mm_theDBfree.next, MM_FREEFLAG); |
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357 | return 0; |
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358 | } |
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359 | |
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360 | int mmTestHeaps() |
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361 | { |
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362 | int i = -1; |
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363 | |
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364 | do |
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365 | { |
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366 | i++; |
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367 | if (! mmCheckHeap(&mm_theList[i])) return 0; |
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368 | } |
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369 | while (mmGetSize(i) < MAX_BLOCK_SIZE); |
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370 | |
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371 | return 1; |
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372 | } |
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373 | |
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374 | static int mmIsAddrOnDList(DBMCB *what, DBMCB* list, int s) |
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375 | { |
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376 | while (list != NULL) |
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377 | { |
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378 | if (list == what) return 1; |
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379 | list = list->next; |
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380 | } |
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381 | return 0; |
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382 | } |
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383 | |
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384 | static int mmCheckListContainment(DBMCB * what, int flags) |
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385 | { |
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386 | if ( mmIsAddrOnDList((void*) what, mm_theDBused.next, |
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387 | (void*) &(mm_theDBused.next) - |
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388 | (void*) &(mm_theDBused))) |
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389 | { |
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390 | if (flags == MM_FREEFLAG) |
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391 | return mmPrintDBMCB(what, "Free flag and in used list", 0); |
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392 | } |
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393 | else |
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394 | { |
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395 | if (flags == MM_USEDFLAG) |
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396 | return mmPrintDBMCB(what, "Used flag but not in used list", 0); |
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397 | } |
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398 | |
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399 | if ( mmIsAddrOnDList((void*) what, mm_theDBfree.next, |
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400 | (void*) &(mm_theDBfree.next) - |
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401 | (void*) &(mm_theDBfree))) |
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402 | { |
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403 | if (flags == MM_USEDFLAG) |
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404 | return mmPrintDBMCB(what, "Used flag and in free list", 0); |
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405 | } |
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406 | else |
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407 | { |
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408 | if (flags == MM_FREEFLAG) |
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409 | return mmPrintDBMCB(what,"Free flag but not in free list", 0); |
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410 | } |
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411 | return 1; |
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412 | } |
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413 | |
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414 | int mmCheckDBMCB ( DBMCB * what, int size , int flags) |
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415 | { |
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416 | |
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417 | assume(flags == MM_FREEFLAG || flags == MM_USEDFLAG); |
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418 | if (! mmCheckSingleDBMCB(what, size, flags)) |
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419 | return 0; |
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420 | |
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421 | if (mm_MDEBUG > 1 && ! mmTestMemory()) return 0; |
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422 | |
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423 | if (mm_MDEBUG > 0 && ! mmCheckListContainment(what, flags)) return 0; |
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424 | |
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425 | return 1; |
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426 | } |
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427 | |
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428 | /********************************************************************** |
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429 | * |
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430 | * Test routines |
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431 | * |
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432 | **********************************************************************/ |
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433 | static BOOLEAN mmDBTestHeapBlockS(const void* adr, const memHeap heap, |
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434 | const size_t size, |
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435 | const char * fname, const int lineno ) |
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436 | { |
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437 | DBMCB * what; |
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438 | |
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439 | if ( adr == NULL || size == 0) |
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440 | return TRUE; |
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441 | |
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442 | if (mm_MDEBUG > 2 && ! mmTestHeaps()) |
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443 | { |
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444 | mmPrintFL( fname, lineno ); |
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445 | return FALSE; |
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446 | } |
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447 | |
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448 | what = (DBMCB*)((char*)(adr) - DebugOffsetFront); |
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449 | |
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450 | if ( ! mmCheckDBMCB( what, size, MM_USEDFLAG) ) |
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451 | { |
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452 | mmPrintFL( fname, lineno ); |
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453 | return FALSE; |
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454 | } |
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455 | |
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456 | if (what->heap != heap) |
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457 | { |
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458 | mmPrintDBMCB(what, "Not from specified heap", 0); |
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459 | mmPrintFL( fname, lineno ); |
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460 | return FALSE; |
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461 | } |
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462 | |
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463 | #ifdef HEAP_DEBUG |
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464 | return |
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465 | mmDebugCheckHeapAddr(what, heap, MM_HEAP_ADDR_USED_FLAG, fname, lineno); |
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466 | #else |
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467 | return TRUE; |
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468 | #endif |
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469 | } |
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470 | |
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471 | BOOLEAN mmDBTestHeapBlock(const void* adr, const memHeap heap, |
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472 | const char * fname, const int lineno ) |
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473 | { |
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474 | return mmDBTestHeapBlockS(adr, heap, |
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475 | SizeFromRealSize(mmGetHeapBlockSize(heap)), |
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476 | fname, lineno); |
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477 | } |
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478 | |
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479 | BOOLEAN mmDBTestBlock(const void* adr, const size_t size, |
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480 | const char * fname, const int lineno) |
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481 | { |
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482 | int i; |
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483 | DBMCB * what; |
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484 | |
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485 | if ( ( adr == NULL ) || ( size == 0 ) ) return TRUE; |
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486 | |
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487 | i = mmGetIndex(size); |
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488 | if (i < 0) |
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489 | { |
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490 | what = (DBMCB*)((char*)(adr) - DebugOffsetFront); |
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491 | if ( ! mmCheckDBMCB( what, size, MM_USEDFLAG) ) |
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492 | { |
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493 | mmPrintFL( fname, lineno ); |
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494 | return FALSE; |
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495 | } |
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496 | return TRUE; |
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497 | } |
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498 | else |
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499 | { |
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500 | return mmDBTestHeapBlockS(adr, &(mm_theList[i]), size, fname, lineno); |
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501 | } |
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502 | } |
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503 | |
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504 | |
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505 | BOOLEAN mmDBTest( const void* adr, const char * fname, const int lineno ) |
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506 | { |
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507 | if (adr!=NULL) |
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508 | { |
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509 | size_t l; |
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510 | adr = (size_t*)adr-1; |
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511 | #ifdef ALIGN_8 |
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512 | l= (adr<=mm_maxAddr) ? (*(size_t*)((long)adr&(~((long)7)))) :0; |
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513 | #else |
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514 | l= (adr<=mm_maxAddr) ? (*(size_t*)((long)adr&(~((long)3)))) :0; |
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515 | #endif |
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516 | return mmDBTestBlock( adr,l, fname, lineno ); |
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517 | } |
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518 | return TRUE; |
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519 | } |
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520 | |
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521 | #endif /* MDEBUG */ |
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522 | |
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523 | |
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524 | |
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