Mercurial > projects > ldc
annotate lphobos/gc/win32.d @ 665:d8a1481eaa0c
Renames.
author | Christian Kamm <kamm incasoftware de> |
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date | Mon, 06 Oct 2008 22:56:54 +0200 |
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1 |
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2 // Copyright (C) 2001-2002 by Digital Mars |
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3 // All Rights Reserved |
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4 // www.digitalmars.com |
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5 // Written by Walter Bright |
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6 |
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7 import std.c.windows.windows; |
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8 |
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9 alias int pthread_t; |
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10 |
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11 /*********************************** |
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12 * Map memory. |
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13 */ |
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14 |
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15 void *os_mem_map(uint nbytes) |
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16 { |
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17 return VirtualAlloc(null, nbytes, MEM_RESERVE, PAGE_READWRITE); |
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18 } |
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19 |
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20 /*********************************** |
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21 * Commit memory. |
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22 * Returns: |
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23 * 0 success |
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24 * !=0 failure |
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25 */ |
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26 |
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27 int os_mem_commit(void *base, uint offset, uint nbytes) |
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28 { |
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29 void *p; |
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30 |
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31 p = VirtualAlloc(base + offset, nbytes, MEM_COMMIT, PAGE_READWRITE); |
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32 return cast(int)(p == null); |
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33 } |
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34 |
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35 |
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36 /*********************************** |
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37 * Decommit memory. |
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38 * Returns: |
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39 * 0 success |
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40 * !=0 failure |
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41 */ |
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42 |
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43 int os_mem_decommit(void *base, uint offset, uint nbytes) |
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44 { |
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45 return cast(int)VirtualFree(base + offset, nbytes, MEM_DECOMMIT) == 0; |
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46 } |
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47 |
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48 /*********************************** |
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49 * Unmap memory allocated with os_mem_map(). |
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50 * Memory must have already been decommitted. |
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51 * Returns: |
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52 * 0 success |
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53 * !=0 failure |
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54 */ |
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55 |
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56 int os_mem_unmap(void *base, uint nbytes) |
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57 { |
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58 return cast(int)VirtualFree(base, 0, MEM_RELEASE) == 0; |
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59 } |
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60 |
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61 |
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62 /******************************************** |
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63 */ |
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64 |
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65 pthread_t pthread_self() |
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66 { |
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67 //printf("pthread_self() = %x\n", GetCurrentThreadId()); |
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68 return cast(pthread_t) GetCurrentThreadId(); |
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69 } |
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70 |
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71 /********************************************** |
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72 * Determine "bottom" of stack (actually the top on Win32 systems). |
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73 */ |
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74 |
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75 void *os_query_stackBottom() |
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76 { |
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77 asm |
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78 { |
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79 naked ; |
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80 mov EAX,FS:4 ; |
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81 ret ; |
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82 } |
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83 } |
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84 |
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85 /********************************************** |
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86 * Determine base address and size of static data segment. |
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87 */ |
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88 |
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89 version (GNU) |
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90 { |
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91 // This is MinGW specific |
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92 extern (C) |
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93 { |
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94 // TODO: skip the .rdata between .data and .bss? |
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95 extern int _data_start__; |
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96 extern int _bss_end__; |
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97 } |
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98 |
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99 void os_query_staticdataseg(void **base, uint *nbytes) |
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100 { |
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101 *base = cast(void *)&_data_start__; |
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102 *nbytes = cast(uint)(cast(char *)&_bss_end__ - cast(char *)&_data_start__); |
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103 } |
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104 |
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105 } |
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106 else |
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107 { |
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108 |
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109 extern (C) |
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110 { |
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111 extern int _xi_a; // &_xi_a just happens to be start of data segment |
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112 extern int _edata; // &_edata is start of BSS segment |
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113 extern int _end; // &_end is past end of BSS |
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114 } |
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115 |
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116 void os_query_staticdataseg(void **base, uint *nbytes) |
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117 { |
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118 *base = cast(void *)&_xi_a; |
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119 *nbytes = cast(uint)(cast(char *)&_end - cast(char *)&_xi_a); |
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120 } |
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121 |
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122 } |
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123 /++++ |
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124 |
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125 void os_query_staticdataseg(void **base, uint *nbytes) |
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126 { |
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127 static char dummy = 6; |
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128 SYSTEM_INFO si; |
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129 MEMORY_BASIC_INFORMATION mbi; |
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130 char *p; |
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131 void *bottom = null; |
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132 uint size = 0; |
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133 |
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134 // Tests show the following does not work reliably. |
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135 // The reason is that the data segment is arbitrarily divided |
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136 // up into PAGE_READWRITE and PAGE_WRITECOPY. |
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137 // This means there are multiple regions to query, and |
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138 // can even wind up including the code segment. |
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139 assert(0); // fix implementation |
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140 |
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141 GetSystemInfo(&si); |
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142 p = (char *)((uint)(&dummy) & ~(si.dwPageSize - 1)); |
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143 while (VirtualQuery(p, &mbi, sizeof(mbi)) == sizeof(mbi) && |
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144 mbi.Protect & (PAGE_READWRITE | PAGE_WRITECOPY) && |
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145 !(mbi.Protect & PAGE_GUARD) && |
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146 mbi.AllocationBase != 0) |
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147 { |
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148 bottom = (void *)mbi.BaseAddress; |
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149 size = (uint)mbi.RegionSize; |
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150 |
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151 printf("dwPageSize = x%x\n", si.dwPageSize); |
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152 printf("&dummy = %p\n", &dummy); |
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153 printf("BaseAddress = %p\n", mbi.BaseAddress); |
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154 printf("AllocationBase = %p\n", mbi.AllocationBase); |
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155 printf("AllocationProtect = x%x\n", mbi.AllocationProtect); |
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156 printf("RegionSize = x%x\n", mbi.RegionSize); |
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157 printf("State = x%x\n", mbi.State); |
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158 printf("Protect = x%x\n", mbi.Protect); |
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159 printf("Type = x%x\n\n", mbi.Type); |
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160 |
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161 p -= si.dwPageSize; |
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162 } |
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163 |
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164 *base = bottom; |
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165 *nbytes = size; |
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166 } |
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167 |
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168 ++++/ |