annotate runtime/internal/dmain2.d @ 883:b52d5de7783f

GC defines and linkage changes.
author Christian Kamm <kamm incasoftware de>
date Thu, 08 Jan 2009 18:20:02 +0100
parents 51c4d1a64da6
children 8208374e5bed
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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 <sean@f4.ca> for use with Tango.
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9 */
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10
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11 private
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12 {
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13 import util.console;
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14
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15 import tango.stdc.stddef;
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16 import tango.stdc.stdlib;
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17 import tango.stdc.string;
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18 import memory;
443
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19 }
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21 version( Win32 )
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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 //pragma(lib, "tango-win32-dmd.lib"); // links Tango's Win32 library to reduce EXE size
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29 }
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31 extern (C) void _STI_monitor_staticctor();
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32 extern (C) void _STD_monitor_staticdtor();
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33 extern (C) void _STI_critical_init();
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34 extern (C) void _STD_critical_term();
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35 extern (C) void gc_init();
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36 extern (C) void gc_term();
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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 //debug=PRINTF;
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42 debug(PRINTF) extern (C) int printf(char*, ...);
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43
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44 /***********************************
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45 * These functions must be defined for any D program linked
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46 * against this library.
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47 */
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48 extern (C) void onAssertError( char[] file, size_t line );
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49 extern (C) void onAssertErrorMsg( char[] file, size_t line, char[] msg );
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50 extern (C) void onArrayBoundsError( char[] file, size_t line );
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51 extern (C) void onSwitchError( char[] file, size_t line );
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52 extern (C) bool runModuleUnitTests();
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53
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54 // this function is called from the utf module
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55 //extern (C) void onUnicodeError( char[] msg, size_t idx );
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56
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57 /***********************************
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58 * These are internal callbacks for various language errors.
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59 */
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60 extern (C) void _d_assert( char[] file, uint line )
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61 {
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62 onAssertError( file, line );
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63 }
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64
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65 extern (C) void _d_assert_msg( char[] msg, char[] file, uint line )
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66 {
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67 onAssertErrorMsg( file, line, msg );
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68 }
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69
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70 extern (C) void _d_array_bounds( char[] file, uint line )
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71 {
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72 onArrayBoundsError( file, line );
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73 }
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74
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75 extern (C) void _d_switch_error( char[] file, uint line )
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76 {
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77 onSwitchError( file, line );
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78 }
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79
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80 bool _d_isHalting = false;
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81
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82 extern (C) bool rt_isHalting()
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83 {
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84 return _d_isHalting;
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85 }
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86
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87 extern (C) bool rt_trapExceptions = true;
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88
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89 void _d_criticalInit()
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90 {
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91 _STI_monitor_staticctor();
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92 _STI_critical_init();
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93 initStaticDataPtrs();
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94 }
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95
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96 alias void delegate( Exception ) ExceptionHandler;
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97
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98 // this is here so users can manually initialize the runtime
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99 // for example, when there is no main function etc.
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100 extern (C) bool rt_init( ExceptionHandler dg = null )
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101 {
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102 _d_criticalInit();
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103
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104 try
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105 {
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106 gc_init();
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107 _moduleCtor();
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108 return true;
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109 }
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110 catch( Exception e )
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111 {
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112 if( dg )
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113 dg( e );
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114 }
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115 catch
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116 {
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117
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118 }
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119 _d_criticalTerm();
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120 return false;
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121 }
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122
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123 void _d_criticalTerm()
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124 {
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125 _STD_critical_term();
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126 _STD_monitor_staticdtor();
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127 }
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128
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129 // this is here so users can manually terminate the runtime
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130 // for example, when there is no main function etc.
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131 extern (C) bool rt_term( ExceptionHandler dg = null )
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132 {
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133 try
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134 {
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135 thread_joinAll();
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136 _d_isHalting = true;
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137 _moduleDtor();
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138 gc_term();
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139 return true;
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140 }
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141 catch( Exception e )
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142 {
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143 if( dg )
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144 dg( e );
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145 }
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146 catch
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147 {
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148
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149 }
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150 finally
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151 {
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152 _d_criticalTerm();
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153 }
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154 return false;
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155 }
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156
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157 /***********************************
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158 * The D main() function supplied by the user's program
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159 */
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160 int main(char[][] args);
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161
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162 /***********************************
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163 * Substitutes for the C main() function.
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164 * It's purpose is to wrap the call to the D main()
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165 * function and catch any unhandled exceptions.
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166 */
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167
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168 extern (C) int main(int argc, char **argv, char** env)
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169 {
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170 char[][] args;
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171 int result;
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172
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173 debug(PRINTF) printf("main ctors\n");
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174 _STI_monitor_staticctor();
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175 _STI_critical_init();
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176 initStaticDataPtrs();
443
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177
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178 debug(PRINTF) printf("main args\n");
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179 // GDC seems to get by without this Windows special case...
443
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180 version (Win32)
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181 {
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182 wchar_t* wcbuf = GetCommandLineW();
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183 size_t wclen = wcslen(wcbuf);
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184 int wargc = 0;
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185 wchar_t** wargs = CommandLineToArgvW(wcbuf, &wargc);
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186 assert(wargc == argc);
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187
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188 char* cargp = null;
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189 size_t cargl = WideCharToMultiByte(65001, 0, wcbuf, wclen, null, 0, null, 0);
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190
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191 cargp = cast(char*) alloca(cargl);
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192 args = ((cast(char[]*) alloca(wargc * (char[]).sizeof)))[0 .. wargc];
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193
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194 for (size_t i = 0, p = 0; i < wargc; i++)
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195 {
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196 int wlen = wcslen( wargs[i] );
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197 int clen = WideCharToMultiByte(65001, 0, &wargs[i][0], wlen, null, 0, null, 0);
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198 args[i] = cargp[p .. p+clen];
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199 p += clen; assert(p <= cargl);
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200 WideCharToMultiByte(65001, 0, &wargs[i][0], wlen, &args[i][0], clen, null, 0);
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201 }
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202 LocalFree(wargs);
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203 wargs = null;
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204 wargc = 0;
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205 }
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206 else
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207 {
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208 char[]* am = cast(char[]*) malloc(argc * (char[]).sizeof);
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209 scope(exit) free(am);
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210
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211 for (size_t i = 0; i < argc; i++)
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212 {
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213 auto len = strlen(argv[i]);
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214 am[i] = argv[i][0 .. len];
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215 }
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216 args = am[0 .. argc];
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217 }
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218
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219 debug(PRINTF) printf("main trap exceptions\n");
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220 bool trapExceptions = rt_trapExceptions;
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221
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222 void tryExec(void delegate() dg)
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223 {
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224 debug(PRINTF) printf("main try exec\n");
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225 if (trapExceptions)
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226 {
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227 try
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228 {
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229 dg();
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230 }
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231 catch (Exception e)
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232 {
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233 while (e)
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234 {
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235 if (e.file)
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236 {
645
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237 // fprintf(stderr, "%.*s(%u): %.*s\n", e.file, e.line, e.msg);
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238 console (e.classinfo.name)("@")(e.file)("(")(e.line)("): ")(e.toString)("\n");
443
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239 }
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240 else
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241 {
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242 // fprintf(stderr, "%.*s\n", e.toString());
443
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243 console (e.classinfo.name)(": ")(e.toString)("\n");
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244 }
645
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245 if (e.info)
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246 {
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247 console ("----------------\n");
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248 foreach (t; e.info)
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249 console (t)("\n");
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250 }
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251 if (e.next)
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252 console ("\n");
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253 e = e.next;
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254 }
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255 result = EXIT_FAILURE;
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256 }
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257 catch (Object o)
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258 {
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259 // fprintf(stderr, "%.*s\n", o.toString());
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260 console (o.toString)("\n");
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261 result = EXIT_FAILURE;
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262 }
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263 }
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264 else
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265 {
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266 dg();
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267 }
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268 }
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269
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270 // NOTE: The lifetime of a process is much like the lifetime of an object:
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271 // it is initialized, then used, then destroyed. If initialization
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272 // fails, the successive two steps are never reached. However, if
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273 // initialization succeeds, then cleanup will occur even if the use
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274 // step fails in some way. Here, the use phase consists of running
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275 // the user's main function. If main terminates with an exception,
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276 // the exception is handled and then cleanup begins. An exception
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277 // thrown during cleanup, however, will abort the cleanup process.
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278
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279 void runMain()
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280 {
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281 debug(PRINTF) printf("main runMain\n");
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282 result = main(args);
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283 }
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284
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285 void runAll()
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286 {
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287 debug(PRINTF) printf("main runAll\n");
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288 gc_init();
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289 _moduleCtor();
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290 if (runModuleUnitTests())
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291 tryExec(&runMain);
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292 thread_joinAll();
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293 _d_isHalting = true;
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294 _moduleDtor();
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295 gc_term();
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296 }
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297
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298 tryExec(&runAll);
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299
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300 debug(PRINTF) printf("main dtor\n");
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301 _STD_critical_term();
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302 _STD_monitor_staticdtor();
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303
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304 return result;
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305 }