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Removed error on naked, not fully complete, but I'll be doing more work on it during this Christmas, and some things do work. Fixed taking delegate of final class method. see mini/delegate3.d.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Tue, 09 Dec 2008 14:07:30 +0100
parents 373489eeaf90
children
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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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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 ++++/