1 | /******************************************************************* |
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2 | * File: omBinPage.c |
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3 | * Purpose: implementation of routines for primitve BinPage managment |
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4 | * Author: obachman (Olaf Bachmann) |
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5 | * Created: 11/99 |
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6 | * Version: $Id: omBinPage.c,v 1.3 2000-08-14 12:26:41 obachman Exp $ |
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7 | *******************************************************************/ |
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8 | #include <limits.h> |
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9 | #include "omAlloc.h" |
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10 | #include "omDefaultConfig.h" |
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11 | |
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12 | /******************************************************************* |
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13 | * |
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14 | * Local declarations |
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15 | * |
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16 | *******************************************************************/ |
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17 | |
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18 | /* define if you want to keep regions approximately in order */ |
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19 | #define OM_KEEP_REGIONS_ORDER |
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20 | |
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21 | struct omBinPageRegion_s |
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22 | { |
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23 | void* current; /* linked list of free pages */ |
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24 | int used_pages; /* number of used pages */ |
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25 | omBinPageRegion next; /* nex/prev pointer in ring of regions */ |
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26 | omBinPageRegion prev; |
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27 | void* init_addr; /* pointer portion of inital chunk which is still free */ |
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28 | int init_pages; /* number of pages still available in init_chunk */ |
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29 | void* addr; /* addr returned by alloc */ |
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30 | int pages; /* total size of region */ |
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31 | }; |
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32 | |
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33 | /* globale variable holding pointing int regions ring */ |
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34 | static omBinPageRegion om_CurrentBinPageRegion = NULL; |
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35 | unsigned long om_MaxBinPageIndex = 0; |
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36 | unsigned long om_MinBinPageIndex = ULONG_MAX; |
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37 | unsigned long *om_BinPageIndicies = NULL; |
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38 | |
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39 | /* declaration of local procs */ |
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40 | static void* omTakeOutConsecutivePages(omBinPageRegion region, int how_many); |
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41 | static omBinPageRegion omAllocNewBinPagesRegion(int min_pages); |
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42 | static void omFreeBinPagesRegion(omBinPageRegion region); |
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43 | |
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44 | static void omBinPageIndexFault(unsigned long low_index, unsigned long high_index); |
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45 | static void omRegisterBinPages(void* low_addr, int pages); |
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46 | static void omUnregisterBinPages(void* low_addr, int pages); |
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47 | |
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48 | OM_INLINE_LOCAL void omTakeOutRegion(omBinPageRegion region) |
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49 | { |
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50 | omAssume(region != NULL); |
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51 | |
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52 | if (region->prev != NULL) |
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53 | { |
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54 | omAssume(region->prev != region && region->prev != region->next); |
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55 | region->prev->next = region->next; |
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56 | } |
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57 | |
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58 | if (region->next != NULL) |
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59 | { |
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60 | omAssume(region->next != region && region->prev != region->next); |
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61 | region->next->prev = region->prev; |
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62 | } |
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63 | } |
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64 | |
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65 | OM_INLINE_LOCAL void omInsertRegionAfter(omBinPageRegion insert, omBinPageRegion after) |
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66 | { |
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67 | omAssume(insert != NULL && after != NULL && insert != after); |
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68 | insert->next = after->next; |
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69 | insert->prev = after; |
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70 | after->next = insert; |
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71 | if (insert->next != NULL) |
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72 | { |
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73 | omAssume(insert->next != insert && insert->next != after); |
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74 | insert->next->prev = insert; |
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75 | } |
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76 | } |
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77 | |
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78 | OM_INLINE_LOCAL void omInsertRegionBefore(omBinPageRegion insert, omBinPageRegion before) |
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79 | { |
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80 | omAssume(insert != NULL && before != NULL && insert != before); |
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81 | insert->prev = before->prev; |
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82 | insert->next = before; |
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83 | before->prev = insert; |
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84 | if (insert->prev != NULL) |
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85 | insert->prev->next = insert; |
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86 | } |
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87 | |
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88 | |
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89 | /******************************************************************* |
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90 | * |
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91 | * Alloc/Free of BinPages |
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92 | * |
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93 | *******************************************************************/ |
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94 | #define NEXT_PAGE(page) *((void**) page) |
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95 | #define OM_IS_EMPTY_REGION(region) ((region)->current == NULL && (region->init_addr == NULL)) |
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96 | |
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97 | omBinPage omAllocBinPage() |
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98 | { |
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99 | omBinPage bin_page; |
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100 | |
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101 | if (om_CurrentBinPageRegion == NULL) |
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102 | om_CurrentBinPageRegion = omAllocNewBinPagesRegion(1); |
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103 | |
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104 | while (1) |
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105 | { |
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106 | if (om_CurrentBinPageRegion->current != NULL) |
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107 | { |
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108 | bin_page = om_CurrentBinPageRegion->current; |
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109 | om_CurrentBinPageRegion->current = NEXT_PAGE(bin_page); |
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110 | goto Found; |
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111 | } |
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112 | if (om_CurrentBinPageRegion->init_pages) |
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113 | { |
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114 | bin_page = om_CurrentBinPageRegion->init_addr; |
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115 | om_CurrentBinPageRegion->init_pages--; |
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116 | if (om_CurrentBinPageRegion->init_pages) |
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117 | om_CurrentBinPageRegion->init_addr += SIZEOF_SYSTEM_PAGE; |
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118 | else |
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119 | om_CurrentBinPageRegion->init_addr = NULL; |
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120 | goto Found; |
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121 | } |
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122 | if (om_CurrentBinPageRegion->next != NULL) |
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123 | { |
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124 | om_CurrentBinPageRegion = om_CurrentBinPageRegion->next; |
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125 | } |
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126 | else |
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127 | { |
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128 | omBinPageRegion new_region = omAllocNewBinPagesRegion(1); |
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129 | new_region->prev = om_CurrentBinPageRegion; |
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130 | om_CurrentBinPageRegion->next = new_region; |
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131 | om_CurrentBinPageRegion = new_region; |
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132 | } |
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133 | } |
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134 | while (1); |
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135 | |
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136 | Found: |
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137 | bin_page->region = om_CurrentBinPageRegion; |
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138 | om_CurrentBinPageRegion->used_pages++; |
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139 | |
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140 | om_Info.UsedPages++; |
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141 | om_Info.AvailPages--; |
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142 | if (om_Info.UsedPages > om_Info.MaxPages) |
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143 | om_Info.MaxPages = om_Info.UsedPages; |
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144 | |
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145 | OM_ALLOC_BINPAGE_HOOK; |
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146 | return bin_page; |
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147 | } |
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148 | |
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149 | omBinPage omAllocBinPages(int how_many) |
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150 | { |
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151 | omBinPage bin_page; |
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152 | omBinPageRegion region; |
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153 | |
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154 | if (om_CurrentBinPageRegion == NULL) |
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155 | om_CurrentBinPageRegion = omAllocNewBinPagesRegion(how_many); |
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156 | |
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157 | region = om_CurrentBinPageRegion; |
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158 | while (1) |
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159 | { |
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160 | if (region->init_pages >= how_many) |
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161 | { |
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162 | bin_page = region->init_addr; |
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163 | region->init_pages -= how_many; |
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164 | if (region->init_pages) |
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165 | region->init_addr += how_many*SIZEOF_SYSTEM_PAGE; |
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166 | else |
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167 | region->init_addr = NULL; |
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168 | goto Found; |
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169 | } |
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170 | if ((bin_page = omTakeOutConsecutivePages(region, how_many)) != NULL) |
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171 | { |
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172 | goto Found; |
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173 | } |
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174 | if (region->next != NULL) |
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175 | { |
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176 | region = region->next; |
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177 | } |
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178 | else |
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179 | { |
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180 | omBinPageRegion new_region = omAllocNewBinPagesRegion(how_many); |
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181 | region->next = new_region; |
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182 | new_region->prev = region; |
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183 | region = new_region; |
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184 | } |
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185 | } |
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186 | while (1); |
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187 | |
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188 | Found: |
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189 | bin_page->region = region; |
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190 | region->used_pages += how_many; |
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191 | |
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192 | if (region != om_CurrentBinPageRegion && OM_IS_EMPTY_REGION(region)) |
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193 | { |
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194 | omTakeOutRegion(region); |
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195 | omInsertRegionBefore(region, om_CurrentBinPageRegion); |
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196 | } |
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197 | om_Info.UsedPages += how_many; |
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198 | om_Info.AvailPages -= how_many; |
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199 | if (om_Info.UsedPages > om_Info.MaxPages) |
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200 | om_Info.MaxPages = om_Info.UsedPages; |
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201 | |
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202 | OM_ALLOC_BINPAGE_HOOK; |
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203 | return bin_page; |
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204 | } |
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205 | |
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206 | void omFreeBinPages(omBinPage bin_page, int how_many) |
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207 | { |
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208 | omBinPageRegion region = bin_page->region; |
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209 | |
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210 | region->used_pages -= how_many; |
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211 | if (region->used_pages == 0) |
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212 | { |
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213 | if (region == om_CurrentBinPageRegion) |
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214 | { |
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215 | if (region->next != NULL) |
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216 | om_CurrentBinPageRegion = region->next; |
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217 | else |
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218 | om_CurrentBinPageRegion = region->prev; |
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219 | } |
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220 | omTakeOutRegion(region); |
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221 | omFreeBinPagesRegion(region); |
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222 | } |
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223 | else |
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224 | { |
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225 | if (region != om_CurrentBinPageRegion && OM_IS_EMPTY_REGION(region)) |
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226 | { |
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227 | omTakeOutRegion(region); |
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228 | omInsertRegionAfter(region, om_CurrentBinPageRegion); |
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229 | } |
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230 | if (how_many > 1) |
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231 | { |
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232 | int i = how_many; |
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233 | void* page = bin_page; |
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234 | |
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235 | while (i > 1) |
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236 | { |
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237 | NEXT_PAGE(page) = page + SIZEOF_SYSTEM_PAGE; |
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238 | page = NEXT_PAGE(page); |
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239 | i--; |
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240 | } |
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241 | NEXT_PAGE(page) = region->current; |
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242 | } |
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243 | else |
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244 | { |
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245 | NEXT_PAGE(bin_page) = region->current; |
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246 | } |
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247 | region->current = (void*) bin_page; |
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248 | } |
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249 | om_Info.AvailPages += how_many; |
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250 | om_Info.UsedPages -= how_many; |
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251 | OM_FREE_BINPAGE_HOOK; |
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252 | } |
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253 | |
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254 | static void* omTakeOutConsecutivePages(omBinPageRegion region, int pages) |
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255 | { |
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256 | void* current; |
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257 | void* iter; |
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258 | void* prev = NULL; |
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259 | void* bin_page; |
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260 | int found; |
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261 | current = region->current; |
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262 | while (current != NULL) |
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263 | { |
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264 | found = 1; |
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265 | iter = current; |
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266 | while (NEXT_PAGE(iter) == iter + SIZEOF_SYSTEM_PAGE) |
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267 | { |
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268 | iter = NEXT_PAGE(iter); |
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269 | /* handle pathological case that iter + SIZEOF_SYSTEM_PAGE == 0 */ |
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270 | if (iter == NULL) return NULL; |
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271 | found++; |
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272 | if (found == pages) |
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273 | { |
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274 | bin_page = current; |
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275 | if (current == region->current) |
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276 | { |
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277 | region->current = NEXT_PAGE(iter); |
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278 | } |
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279 | else |
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280 | { |
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281 | omAssume(prev != NULL); |
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282 | NEXT_PAGE(prev) = NEXT_PAGE(iter); |
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283 | } |
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284 | return bin_page; |
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285 | } |
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286 | } |
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287 | prev = iter; |
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288 | current = NEXT_PAGE(iter); |
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289 | } |
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290 | return NULL; |
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291 | } |
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292 | |
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293 | /* Alloc a new region and insert into regions ring, set current to new region */ |
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294 | static omBinPageRegion omAllocNewBinPagesRegion(int min_pages) |
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295 | { |
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296 | omBinPageRegion region = omAllocFromSystem(sizeof(omBinPageRegion_t)); |
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297 | void* addr; |
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298 | int pages = (min_pages>om_Opts.PagesPerRegion ? min_pages : om_Opts.PagesPerRegion); |
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299 | size_t size = pages*SIZEOF_SYSTEM_PAGE; |
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300 | |
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301 | addr = _omVallocFromSystem(size, 1); |
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302 | if (addr == NULL) |
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303 | { |
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304 | pages = min_pages; |
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305 | size = min_pages*SIZEOF_SYSTEM_PAGE; |
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306 | addr = omVallocFromSystem(size); |
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307 | } |
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308 | |
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309 | omRegisterBinPages(addr, pages); |
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310 | region->addr = addr; |
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311 | region->pages = pages; |
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312 | region->used_pages = 0; |
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313 | region->init_addr = addr; |
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314 | region->init_pages = pages; |
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315 | region->current = NULL; |
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316 | region->next = NULL; |
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317 | region->prev = NULL; |
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318 | |
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319 | om_Info.AvailPages += pages; |
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320 | |
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321 | om_Info.CurrentRegionsAlloc++; |
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322 | if (om_Info.CurrentRegionsAlloc > om_Info.MaxRegionsAlloc) |
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323 | om_Info.MaxRegionsAlloc = om_Info.CurrentRegionsAlloc; |
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324 | |
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325 | /* Update info so that max fields can be updated */ |
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326 | omUpdateInfo(); |
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327 | |
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328 | return region; |
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329 | } |
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330 | |
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331 | /* Free region */ |
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332 | static void omFreeBinPagesRegion(omBinPageRegion region) |
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333 | { |
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334 | omAssume(region != NULL && region->used_pages == 0); |
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335 | |
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336 | om_Info.AvailPages -= region->pages; |
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337 | om_Info.CurrentRegionsAlloc--; |
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338 | |
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339 | omUnregisterBinPages(region->addr, region->pages); |
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340 | omVfreeToSystem(region->addr, region->pages*SIZEOF_SYSTEM_PAGE); |
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341 | omFreeSizeToSystem(region, sizeof(omBinPageRegion_t)); |
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342 | } |
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343 | |
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344 | /******************************************************************* |
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345 | * |
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346 | * BinPage registration |
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347 | * |
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348 | *******************************************************************/ |
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349 | |
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350 | static void omBinPageIndexFault(unsigned long low_index, unsigned long high_index) |
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351 | { |
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352 | unsigned long index_diff = high_index - low_index; |
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353 | long i; |
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354 | omAssume(low_index <= high_index && |
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355 | (high_index > om_MaxBinPageIndex || low_index < om_MinBinPageIndex)); |
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356 | |
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357 | if (om_BinPageIndicies == NULL) |
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358 | { |
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359 | om_BinPageIndicies = (unsigned long*) omAllocFromSystem((index_diff + 1)*SIZEOF_LONG); |
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360 | om_MaxBinPageIndex = high_index; |
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361 | om_MinBinPageIndex = low_index; |
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362 | for (i=0; i<=index_diff; i++) om_BinPageIndicies[i] = 0; |
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363 | } |
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364 | else |
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365 | { |
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366 | unsigned long old_length = om_MaxBinPageIndex - om_MinBinPageIndex + 1; |
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367 | unsigned long new_length = (low_index < om_MinBinPageIndex ? |
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368 | om_MaxBinPageIndex - low_index : |
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369 | high_index - om_MinBinPageIndex) + 1; |
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370 | om_BinPageIndicies = (unsigned long*) omReallocSizeFromSystem(om_BinPageIndicies, old_length*SIZEOF_LONG, |
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371 | new_length*SIZEOF_LONG); |
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372 | if (low_index < om_MinBinPageIndex) |
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373 | { |
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374 | unsigned long offset = new_length - old_length; |
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375 | for (i=old_length - 1; i >= 0; i--) om_BinPageIndicies[i+offset] = om_BinPageIndicies[i]; |
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376 | for (i=0; i<offset; i++) om_BinPageIndicies[i] = 0; |
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377 | om_MinBinPageIndex = low_index; |
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378 | } |
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379 | else |
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380 | { |
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381 | for (i=old_length; i<new_length; i++) om_BinPageIndicies[i] = 0; |
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382 | om_MaxBinPageIndex = high_index; |
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383 | } |
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384 | } |
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385 | } |
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386 | |
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387 | static void omRegisterBinPages(void* low_addr, int pages) |
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388 | { |
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389 | unsigned long low_index = omGetPageIndexOfAddr(low_addr); |
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390 | void* high_addr = low_addr + (pages-1)*SIZEOF_SYSTEM_PAGE; |
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391 | unsigned long high_index = omGetPageIndexOfAddr(high_addr); |
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392 | unsigned long shift; |
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393 | |
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394 | if (low_index < om_MinBinPageIndex || high_index > om_MaxBinPageIndex) |
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395 | omBinPageIndexFault(low_index, high_index); |
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396 | |
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397 | shift = omGetPageShiftOfAddr(low_addr); |
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398 | if (low_index < high_index) |
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399 | { |
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400 | if (shift == 0) |
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401 | { |
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402 | om_BinPageIndicies[low_index-om_MinBinPageIndex] = ULONG_MAX; |
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403 | } |
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404 | else |
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405 | { |
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406 | om_BinPageIndicies[low_index-om_MinBinPageIndex] |= ~ (( 1<< shift) - 1); |
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407 | } |
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408 | for (shift = low_index+1; shift < high_index; shift++) |
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409 | { |
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410 | om_BinPageIndicies[shift-om_MinBinPageIndex] = ULONG_MAX; |
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411 | } |
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412 | shift = omGetPageShiftOfAddr(high_addr); |
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413 | if (shift == BIT_SIZEOF_LONG - 1) |
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414 | { |
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415 | om_BinPageIndicies[high_index - om_MinBinPageIndex] = ULONG_MAX; |
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416 | } |
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417 | else |
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418 | { |
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419 | om_BinPageIndicies[high_index-om_MinBinPageIndex] |= ((1 << (shift + 1)) - 1); |
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420 | } |
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421 | } |
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422 | else |
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423 | { |
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424 | high_index = omGetPageShiftOfAddr(high_addr); |
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425 | while (high_index > shift) |
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426 | { |
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427 | om_BinPageIndicies[low_index-om_MinBinPageIndex] |= (1 << high_index); |
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428 | high_index--; |
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429 | } |
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430 | om_BinPageIndicies[low_index-om_MinBinPageIndex] |= (1 << shift); |
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431 | } |
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432 | } |
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433 | |
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434 | static void omUnregisterBinPages(void* low_addr, int pages) |
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435 | { |
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436 | unsigned long low_index = omGetPageIndexOfAddr(low_addr); |
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437 | void* high_addr = low_addr + (pages-1)*SIZEOF_SYSTEM_PAGE; |
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438 | unsigned long high_index = omGetPageIndexOfAddr(high_addr); |
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439 | unsigned long shift; |
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440 | |
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441 | shift = omGetPageShiftOfAddr(low_addr); |
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442 | if (low_index < high_index) |
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443 | { |
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444 | if (shift == 0) |
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445 | { |
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446 | om_BinPageIndicies[low_index-om_MinBinPageIndex] = 0; |
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447 | } |
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448 | else |
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449 | { |
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450 | om_BinPageIndicies[low_index-om_MinBinPageIndex] &= (( 1<< shift) - 1); |
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451 | } |
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452 | for (shift = low_index+1; shift < high_index; shift++) |
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453 | { |
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454 | om_BinPageIndicies[shift-om_MinBinPageIndex] = 0; |
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455 | } |
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456 | shift = omGetPageShiftOfAddr(high_addr); |
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457 | if (shift == BIT_SIZEOF_LONG - 1) |
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458 | { |
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459 | om_BinPageIndicies[high_index - om_MinBinPageIndex] = 0; |
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460 | } |
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461 | else |
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462 | { |
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463 | om_BinPageIndicies[high_index-om_MinBinPageIndex] &= ~ ((1 << (shift + 1)) - 1); |
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464 | } |
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465 | } |
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466 | else |
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467 | { |
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468 | high_index = omGetPageShiftOfAddr(high_addr); |
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469 | while (high_index > shift) |
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470 | { |
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471 | om_BinPageIndicies[low_index-om_MinBinPageIndex] &= ~(1 << high_index); |
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472 | high_index--; |
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473 | } |
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474 | om_BinPageIndicies[low_index-om_MinBinPageIndex] &= ~(1 << shift); |
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475 | } |
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476 | } |
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477 | |
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478 | /*********************************************************************** |
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479 | * |
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480 | * checking routines |
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481 | * |
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482 | *******************************************************************/ |
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483 | #ifndef OM_NDEBUG |
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484 | #include "omDebug.h" |
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485 | |
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486 | int omIsKnownMemoryRegion(omBinPageRegion region) |
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487 | { |
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488 | omBinPageRegion iter = om_CurrentBinPageRegion; |
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489 | |
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490 | if (region == NULL || iter == NULL) return 0; |
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491 | iter = omGListLast(om_CurrentBinPageRegion, prev); |
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492 | do |
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493 | { |
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494 | if (region == iter) return 1; |
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495 | iter = iter->next; |
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496 | } |
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497 | while (iter != NULL); |
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498 | return 0; |
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499 | } |
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500 | |
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501 | |
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502 | omError_t omCheckBinPageRegion(omBinPageRegion region, int level, omError_t report, OM_FLR_DECL) |
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503 | { |
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504 | if (level <= 0) return omError_NoError; |
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505 | |
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506 | omCheckReturn(omCheckPtr(region, report, OM_FLR_VAL)); |
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507 | omCheckReturnCorrupted(! omIsKnownMemoryRegion(region)); |
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508 | omCheckReturnCorrupted(! omIsAddrPageAligned(region->addr) || ! omIsAddrPageAligned(region->current)); |
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509 | omCheckReturnCorrupted(region->used_pages < 0); |
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510 | omCheckReturnCorrupted(region->init_pages < 0 || region->init_pages > region->pages); |
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511 | |
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512 | if (region->init_pages) |
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513 | { |
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514 | omCheckReturnCorrupted(! omIsAddrPageAligned(region->init_addr)); |
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515 | omCheckReturnCorrupted(! (region->init_addr >= region->addr |
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516 | && region->init_addr <= region->addr + (region->pages -1)*SIZEOF_SYSTEM_PAGE)); |
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517 | omCheckReturnCorrupted(region->init_addr != |
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518 | region->addr + (region->pages - region->init_pages)*SIZEOF_SYSTEM_PAGE); |
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519 | } |
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520 | |
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521 | omCheckReturn(omCheckList(region->current, level, report, OM_FLR_VAL)); |
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522 | omCheckReturnCorrupted(region->current == NULL && region->used_pages + region->init_pages != region->pages); |
---|
523 | omCheckReturnCorrupted(level > 1 && |
---|
524 | omListLength(region->current)+region->used_pages+region->init_pages != region->pages); |
---|
525 | return omError_NoError; |
---|
526 | } |
---|
527 | |
---|
528 | omError_t omCheckBinPageRegions(int level, omError_t report, OM_FLR_DECL) |
---|
529 | { |
---|
530 | omBinPageRegion iter = om_CurrentBinPageRegion; |
---|
531 | |
---|
532 | if (level <= 0) return omError_NoError; |
---|
533 | if (iter == NULL) return omError_NoError; |
---|
534 | |
---|
535 | omCheckReturnError(om_CurrentBinPageRegion->next != NULL && OM_IS_EMPTY_REGION(om_CurrentBinPageRegion->next), |
---|
536 | omError_InternalBug); |
---|
537 | omCheckReturnError(om_CurrentBinPageRegion->prev != NULL && ! OM_IS_EMPTY_REGION(om_CurrentBinPageRegion->prev), |
---|
538 | omError_InternalBug); |
---|
539 | |
---|
540 | |
---|
541 | if (level > 1) |
---|
542 | { |
---|
543 | omBinPageRegion prev_last = (omBinPageRegion) omGListLast(om_CurrentBinPageRegion, prev); |
---|
544 | omBinPageRegion next_last = (omBinPageRegion) omGListLast(om_CurrentBinPageRegion, next); |
---|
545 | |
---|
546 | omCheckReturn(omCheckGList(iter, next, level, report, OM_FLR_VAL)); |
---|
547 | omCheckReturn(omCheckGList(iter, prev, level, report, OM_FLR_VAL)); |
---|
548 | |
---|
549 | omCheckReturnCorrupted(omGListLength(prev_last, next) |
---|
550 | != |
---|
551 | omGListLength(next_last, prev)); |
---|
552 | |
---|
553 | omCheckReturn(omCheckBinPageRegion(om_CurrentBinPageRegion, level - 1, report, OM_FLR_VAL)); |
---|
554 | |
---|
555 | iter = om_CurrentBinPageRegion->next; |
---|
556 | while (iter) |
---|
557 | { |
---|
558 | omCheckReturnError(OM_IS_EMPTY_REGION(iter), omError_InternalBug); |
---|
559 | |
---|
560 | omCheckReturn(omCheckBinPageRegion(iter, level - 1, report, OM_FLR_VAL)); |
---|
561 | iter = iter->next; |
---|
562 | } |
---|
563 | |
---|
564 | iter = om_CurrentBinPageRegion->prev; |
---|
565 | while (iter) |
---|
566 | { |
---|
567 | omCheckReturnError( !OM_IS_EMPTY_REGION(iter), omError_InternalBug); |
---|
568 | omCheckReturn(omCheckBinPageRegion(iter, level - 1, report, OM_FLR_VAL)); |
---|
569 | iter = iter->prev; |
---|
570 | } |
---|
571 | } |
---|
572 | return omError_NoError; |
---|
573 | } |
---|
574 | |
---|
575 | omBinPageRegion omFindRegionOfAddr(void* addr) |
---|
576 | { |
---|
577 | omBinPageRegion region = om_CurrentBinPageRegion; |
---|
578 | |
---|
579 | if (region == NULL) return 0; |
---|
580 | region = omGListLast(region, prev); |
---|
581 | do |
---|
582 | { |
---|
583 | if (addr >= region->addr && addr < region->addr + (region->pages)*SIZEOF_SYSTEM_PAGE) |
---|
584 | return region; |
---|
585 | region = region->next; |
---|
586 | } |
---|
587 | while (region != NULL); |
---|
588 | return NULL; |
---|
589 | } |
---|
590 | |
---|
591 | int omIsAddrOnFreeBinPage(void* addr) |
---|
592 | { |
---|
593 | omBinPageRegion region = om_CurrentBinPageRegion; |
---|
594 | |
---|
595 | if (region == NULL) return 0; |
---|
596 | do |
---|
597 | { |
---|
598 | if (addr > region->addr && addr < region->addr + (region->pages)*SIZEOF_SYSTEM_PAGE) |
---|
599 | { |
---|
600 | if (omIsOnList(region->current, omGetPageOfAddr(addr))) return 1; |
---|
601 | return 0; |
---|
602 | } |
---|
603 | region = region->next; |
---|
604 | } |
---|
605 | while (region != NULL); |
---|
606 | return 0; |
---|
607 | } |
---|
608 | |
---|
609 | #endif /* ! OM_NDEBUG */ |
---|