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annotate druntime/src/compiler/dmd/dmain2.d @ 759:d3eb054172f9

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Added copy of druntime from DMD 2.020 modified for LDC.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Tue, 11 Nov 2008 01:52:37 +0100
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759
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
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1 /*
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2 * Placed into the Public Domain.
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3 * written by Walter Bright
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4 * www.digitalmars.com
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5 */
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6
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7 /*
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8 * Modified by Sean Kelly for use with the D Runtime Project
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9 */
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10
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11 module rt.dmain2;
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12
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13 private
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14 {
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15 import util.console;
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16 import stdc.stddef;
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17 import stdc.stdlib;
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18 import stdc.string;
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19 }
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20
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21 version(Windows)
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22 {
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23 extern (Windows) void* LocalFree(void*);
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24 extern (Windows) wchar_t* GetCommandLineW();
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25 extern (Windows) wchar_t** CommandLineToArgvW(wchar_t*, int*);
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26 extern (Windows) export int WideCharToMultiByte(uint, uint, wchar_t*, int, char*, int, char*, int);
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27 pragma(lib, "shell32.lib"); // needed for CommandLineToArgvW
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28 }
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29
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30 extern (C) void _STI_monitor_staticctor();
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31 extern (C) void _STD_monitor_staticdtor();
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32 extern (C) void _STI_critical_init();
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33 extern (C) void _STD_critical_term();
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34 extern (C) void gc_init();
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35 extern (C) void gc_term();
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36 extern (C) void _minit();
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37 extern (C) void _moduleCtor();
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38 extern (C) void _moduleDtor();
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39 extern (C) void thread_joinAll();
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40
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41 /***********************************
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42 * These functions must be defined for any D program linked
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43 * against this library.
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44 */
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45 extern (C) void onAssertError(string file, size_t line);
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46 extern (C) void onAssertErrorMsg(string file, size_t line, string msg);
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47 extern (C) void onArrayBoundsError(string file, size_t line);
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48 extern (C) void onHiddenFuncError(Object o);
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49 extern (C) void onSwitchError(string file, size_t line);
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50 extern (C) bool runModuleUnitTests();
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51
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52 // this function is called from the utf module
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53 //extern (C) void onUnicodeError(string msg, size_t idx);
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54
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55 /***********************************
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56 * These are internal callbacks for various language errors.
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57 */
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58 extern (C) void _d_assert(string file, uint line)
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59 {
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60 onAssertError(file, line);
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61 }
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62
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63 extern (C) static void _d_assert_msg(string msg, string file, uint line)
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64 {
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65 onAssertErrorMsg(file, line, msg);
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66 }
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67
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68 extern (C) void _d_array_bounds(string file, uint line)
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69 {
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70 onArrayBoundsError(file, line);
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71 }
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72
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73 extern (C) void _d_switch_error(string file, uint line)
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74 {
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75 onSwitchError(file, line);
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76 }
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77
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78 extern (C) void _d_hidden_func()
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79 {
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80 Object o;
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81 asm
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82 {
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83 mov o, EAX;
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84 }
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85 onHiddenFuncError(o);
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86 }
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87
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88 bool _d_isHalting = false;
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89
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90 extern (C) bool rt_isHalting()
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91 {
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92 return _d_isHalting;
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93 }
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94
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95 extern (C) bool rt_trapExceptions = true;
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96
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97 void _d_criticalInit()
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98 {
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99 version (linux)
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100 {
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101 _STI_monitor_staticctor();
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102 _STI_critical_init();
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103 }
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104 }
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105
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106 alias void delegate(Throwable) ExceptionHandler;
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107
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108 extern (C) bool rt_init(ExceptionHandler dg = null)
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109 {
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110 _d_criticalInit();
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111
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112 try
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113 {
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114 gc_init();
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115 version (Windows)
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116 _minit();
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117 _moduleCtor();
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118 return true;
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119 }
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120 catch (Throwable e)
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121 {
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122 if (dg)
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123 dg(e);
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124 }
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125 catch
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
126 {
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parents:
diff changeset
127
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parents:
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128 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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129 _d_criticalTerm();
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130 return false;
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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131 }
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132
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133 void _d_criticalTerm()
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134 {
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diff changeset
135 version (linux)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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136 {
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137 _STD_critical_term();
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138 _STD_monitor_staticdtor();
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139 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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140 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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141
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
142 extern (C) bool rt_term(ExceptionHandler dg = null)
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143 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
144 try
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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145 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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146 thread_joinAll();
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147 _d_isHalting = true;
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148 _moduleDtor();
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diff changeset
149 gc_term();
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150 return true;
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151 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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152 catch (Throwable e)
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153 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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154 if (dg)
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155 dg(e);
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156 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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157 catch
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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158 {
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159
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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160 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
161 finally
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
162 {
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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163 _d_criticalTerm();
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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164 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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165 return false;
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166 }
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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167
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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168 /***********************************
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169 * The D main() function supplied by the user's program
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170 */
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171 int main(char[][] args);
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172
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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173 /***********************************
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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174 * Substitutes for the C main() function.
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175 * It's purpose is to wrap the call to the D main()
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176 * function and catch any unhandled exceptions.
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177 */
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178
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179 extern (C) int main(int argc, char **argv)
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180 {
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181 char[][] args;
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diff changeset
182 int result;
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diff changeset
183
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diff changeset
184 version (linux)
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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185 {
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diff changeset
186 _STI_monitor_staticctor();
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187 _STI_critical_init();
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188 }
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parents:
diff changeset
189
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
190 version (Windows)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
191 {
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parents:
diff changeset
192 wchar_t* wcbuf = GetCommandLineW();
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diff changeset
193 size_t wclen = wcslen(wcbuf);
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194 int wargc = 0;
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diff changeset
195 wchar_t** wargs = CommandLineToArgvW(wcbuf, &wargc);
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parents:
diff changeset
196 assert(wargc == argc);
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197
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parents:
diff changeset
198 char* cargp = null;
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diff changeset
199 size_t cargl = WideCharToMultiByte(65001, 0, wcbuf, wclen, null, 0, null, 0);
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diff changeset
200
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diff changeset
201 cargp = cast(char*) alloca(cargl);
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diff changeset
202 args = ((cast(char[]*) alloca(wargc * (char[]).sizeof)))[0 .. wargc];
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parents:
diff changeset
203
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
204 for (size_t i = 0, p = 0; i < wargc; i++)
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parents:
diff changeset
205 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
206 int wlen = wcslen(wargs[i]);
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parents:
diff changeset
207 int clen = WideCharToMultiByte(65001, 0, &wargs[i][0], wlen, null, 0, null, 0);
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
208 args[i] = cargp[p .. p+clen];
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
209 p += clen; assert(p <= cargl);
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parents:
diff changeset
210 WideCharToMultiByte(65001, 0, &wargs[i][0], wlen, &args[i][0], clen, null, 0);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
211 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
212 LocalFree(wargs);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
213 wargs = null;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
214 wargc = 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
215 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
216 else version (linux)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
217 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
218 char[]* am = cast(char[]*) malloc(argc * (char[]).sizeof);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
219 scope(exit) free(am);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
220
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
221 for (size_t i = 0; i < argc; i++)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
222 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
223 auto len = strlen(argv[i]);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
224 am[i] = argv[i][0 .. len];
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parents:
diff changeset
225 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
226 args = am[0 .. argc];
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
227 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
228
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
229 bool trapExceptions = rt_trapExceptions;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
230
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
231 void tryExec(void delegate() dg)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
232 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
233
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
234 if (trapExceptions)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
235 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
236 try
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
237 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
238 dg();
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
239 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
240 catch (Throwable e)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
241 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
242 while (e)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
243 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
244 if (e.file)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
245 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
246 // fprintf(stderr, "%.*s(%u): %.*s\n", e.file, e.line, e.msg);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
247 console (e.classinfo.name)("@")(e.file)("(")(e.line)("): ")(e.msg)("\n");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
248 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
249 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
250 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
251 // fprintf(stderr, "%.*s\n", e.toString());
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
252 console (e.toString)("\n");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
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253 }
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254 if (e.info)
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255 {
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256 console ("----------------\n");
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257 foreach (t; e.info)
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258 console (t)("\n");
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259 }
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260 if (e.next)
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261 console ("\n");
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262 e = e.next;
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263 }
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264 result = EXIT_FAILURE;
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265 }
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266 catch (Object o)
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267 {
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268 // fprintf(stderr, "%.*s\n", o.toString());
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269 console (o.toString)("\n");
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270 result = EXIT_FAILURE;
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271 }
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272 }
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273 else
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274 {
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275 dg();
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276 }
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277 }
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278
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279 // NOTE: The lifetime of a process is much like the lifetime of an object:
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280 // it is initialized, then used, then destroyed. If initialization
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281 // fails, the successive two steps are never reached. However, if
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282 // initialization succeeds, then cleanup will occur even if the use
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283 // step fails in some way. Here, the use phase consists of running
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284 // the user's main function. If main terminates with an exception,
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285 // the exception is handled and then cleanup begins. An exception
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286 // thrown during cleanup, however, will abort the cleanup process.
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287
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288 void runMain()
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289 {
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290 result = main(args);
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291 }
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292
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293 void runAll()
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294 {
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295 gc_init();
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296 version (Windows)
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297 _minit();
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298 _moduleCtor();
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299 if (runModuleUnitTests())
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300 tryExec(&runMain);
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301 thread_joinAll();
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302 _d_isHalting = true;
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303 _moduleDtor();
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304 gc_term();
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305 }
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306
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307 tryExec(&runAll);
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308
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309 version (linux)
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310 {
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311 _STD_critical_term();
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312 _STD_monitor_staticdtor();
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313 }
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314 return result;
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315 }