Mercurial > projects > ldc
annotate druntime/src/compiler/dmd/dmain2.d @ 1458:e0b2d67cfe7c
Added druntime (this should be removed once it works).
author | Robert Clipsham <robert@octarineparrot.com> |
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date | Tue, 02 Jun 2009 17:43:06 +0100 |
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1458
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1 /** |
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2 * Contains main program entry point and support routines. |
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3 * |
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4 * Copyright: Copyright Digital Mars 2000 - 2009. |
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>. |
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6 * Authors: Walter Bright, Sean Kelly |
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7 * |
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8 * Copyright Digital Mars 2000 - 2009. |
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9 * Distributed under the Boost Software License, Version 1.0. |
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10 * (See accompanying file LICENSE_1_0.txt or copy at |
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11 * http://www.boost.org/LICENSE_1_0.txt) |
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12 */ |
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13 module rt.dmain2; |
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14 |
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15 private |
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16 { |
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17 import rt.memory; |
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18 import rt.util.console; |
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19 import core.stdc.stddef; |
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20 import core.stdc.stdlib; |
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21 import core.stdc.string; |
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22 } |
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23 |
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24 version (Windows) |
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25 { |
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26 private import core.stdc.wchar_; |
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27 |
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28 extern (Windows) alias int function() FARPROC; |
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29 extern (Windows) FARPROC GetProcAddress(void*, in char*); |
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30 extern (Windows) void* LoadLibraryA(in char*); |
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31 extern (Windows) int FreeLibrary(void*); |
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32 extern (Windows) void* LocalFree(void*); |
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33 extern (Windows) wchar_t* GetCommandLineW(); |
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34 extern (Windows) wchar_t** CommandLineToArgvW(wchar_t*, int*); |
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35 extern (Windows) export int WideCharToMultiByte(uint, uint, wchar_t*, int, char*, int, char*, int); |
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36 pragma(lib, "shell32.lib"); // needed for CommandLineToArgvW |
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37 } |
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38 |
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39 extern (C) void _STI_monitor_staticctor(); |
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40 extern (C) void _STD_monitor_staticdtor(); |
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41 extern (C) void _STI_critical_init(); |
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42 extern (C) void _STD_critical_term(); |
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43 extern (C) void gc_init(); |
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44 extern (C) void gc_term(); |
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45 extern (C) void _minit(); |
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46 extern (C) void _moduleCtor(); |
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47 extern (C) void _moduleDtor(); |
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48 extern (C) void thread_joinAll(); |
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49 |
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50 version (OSX) |
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51 { |
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52 // The bottom of the stack |
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53 extern (C) void* __osx_stack_end = cast(void*)0xC0000000; |
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54 } |
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55 |
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56 /*********************************** |
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57 * These are a temporary means of providing a GC hook for DLL use. They may be |
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58 * replaced with some other similar functionality later. |
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59 */ |
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60 extern (C) |
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61 { |
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62 void* gc_getProxy(); |
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63 void gc_setProxy(void* p); |
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64 void gc_clrProxy(); |
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65 |
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66 alias void* function() gcGetFn; |
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67 alias void function(void*) gcSetFn; |
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68 alias void function() gcClrFn; |
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69 } |
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70 |
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71 extern (C) void* rt_loadLibrary(in char[] name) |
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72 { |
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73 version (Windows) |
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74 { |
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75 char[260] temp = void; |
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76 temp[0 .. name.length] = name[]; |
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77 temp[name.length] = cast(char) 0; |
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78 void* ptr = LoadLibraryA(temp.ptr); |
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79 if (ptr is null) |
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80 return ptr; |
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81 gcSetFn gcSet = cast(gcSetFn) GetProcAddress(ptr, "gc_setProxy"); |
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82 if (gcSet !is null) |
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83 gcSet(gc_getProxy()); |
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84 return ptr; |
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85 |
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86 } |
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87 else version (Posix) |
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88 { |
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89 throw new Exception("rt_loadLibrary not yet implemented on Posix."); |
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90 } |
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91 } |
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92 |
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93 extern (C) bool rt_unloadLibrary(void* ptr) |
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94 { |
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95 version (Windows) |
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96 { |
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97 gcClrFn gcClr = cast(gcClrFn) GetProcAddress(ptr, "gc_clrProxy"); |
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98 if (gcClr !is null) |
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99 gcClr(); |
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100 return FreeLibrary(ptr) != 0; |
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101 } |
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102 else version (Posix) |
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103 { |
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104 throw new Exception("rt_unloadLibrary not yet implemented on Posix."); |
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105 } |
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106 } |
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107 |
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108 /*********************************** |
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109 * These functions must be defined for any D program linked |
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110 * against this library. |
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111 */ |
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112 extern (C) void onAssertError(string file, size_t line); |
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113 extern (C) void onAssertErrorMsg(string file, size_t line, string msg); |
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114 extern (C) void onRangeError(string file, size_t line); |
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115 extern (C) void onHiddenFuncError(Object o); |
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116 extern (C) void onSwitchError(string file, size_t line); |
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117 extern (C) bool runModuleUnitTests(); |
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118 |
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119 // this function is called from the utf module |
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120 //extern (C) void onUnicodeError(string msg, size_t idx); |
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121 |
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122 /*********************************** |
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123 * These are internal callbacks for various language errors. |
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124 */ |
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125 extern (C) void _d_assert(string file, uint line) |
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126 { |
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127 onAssertError(file, line); |
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128 } |
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129 |
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130 extern (C) static void _d_assert_msg(string msg, string file, uint line) |
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131 { |
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132 onAssertErrorMsg(file, line, msg); |
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133 } |
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134 |
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135 extern (C) void _d_array_bounds(string file, uint line) |
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136 { |
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137 onRangeError(file, line); |
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138 } |
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139 |
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140 extern (C) void _d_switch_error(string file, uint line) |
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141 { |
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142 onSwitchError(file, line); |
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143 } |
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144 |
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145 extern (C) void _d_hidden_func() |
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146 { |
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147 Object o; |
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148 asm |
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149 { |
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150 mov o, EAX; |
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151 } |
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152 onHiddenFuncError(o); |
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153 } |
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154 |
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155 shared bool _d_isHalting = false; |
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156 |
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157 extern (C) bool rt_isHalting() |
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158 { |
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159 return _d_isHalting; |
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160 } |
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161 |
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162 extern (C) shared bool rt_trapExceptions = true; |
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163 |
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164 void _d_criticalInit() |
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165 { |
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166 version (Posix) |
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167 { |
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168 _STI_monitor_staticctor(); |
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169 _STI_critical_init(); |
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170 } |
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171 } |
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172 |
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173 alias void delegate(Throwable) ExceptionHandler; |
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174 |
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175 extern (C) bool rt_init(ExceptionHandler dg = null) |
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176 { |
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177 _d_criticalInit(); |
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178 |
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179 try |
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180 { |
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181 gc_init(); |
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182 initStaticDataGC(); |
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183 version (Windows) |
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184 _minit(); |
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185 _moduleCtor(); |
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186 runModuleUnitTests(); |
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187 return true; |
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188 } |
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189 catch (Throwable e) |
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190 { |
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191 if (dg) |
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192 dg(e); |
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193 } |
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194 catch |
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195 { |
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196 |
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197 } |
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198 _d_criticalTerm(); |
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199 return false; |
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200 } |
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201 |
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202 void _d_criticalTerm() |
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203 { |
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204 version (Posix) |
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205 { |
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206 _STD_critical_term(); |
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207 _STD_monitor_staticdtor(); |
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208 } |
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209 } |
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210 |
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211 extern (C) bool rt_term(ExceptionHandler dg = null) |
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212 { |
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213 try |
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214 { |
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215 thread_joinAll(); |
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216 _d_isHalting = true; |
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217 _moduleDtor(); |
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218 gc_term(); |
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219 return true; |
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220 } |
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221 catch (Throwable e) |
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222 { |
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223 if (dg) |
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224 dg(e); |
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225 } |
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226 catch |
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227 { |
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228 |
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229 } |
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230 finally |
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231 { |
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232 _d_criticalTerm(); |
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233 } |
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234 return false; |
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235 } |
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236 |
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237 /*********************************** |
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238 * The D main() function supplied by the user's program |
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239 */ |
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240 int main(char[][] args); |
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241 |
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242 /*********************************** |
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243 * Substitutes for the C main() function. |
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244 * It's purpose is to wrap the call to the D main() |
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245 * function and catch any unhandled exceptions. |
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246 */ |
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247 |
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248 extern (C) int main(int argc, char **argv) |
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249 { |
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250 char[][] args; |
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251 int result; |
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252 |
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253 version (OSX) |
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254 { /* OSX does not provide a way to get at the top of the |
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255 * stack, except for the magic value 0xC0000000. |
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256 * But as far as the gc is concerned, argv is at the top |
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257 * of the main thread's stack, so save the address of that. |
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258 */ |
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259 __osx_stack_end = cast(void*)&argv; |
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260 } |
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261 |
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262 version (Posix) |
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263 { |
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264 _STI_monitor_staticctor(); |
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265 _STI_critical_init(); |
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266 } |
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267 |
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268 version (Windows) |
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269 { |
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270 wchar_t* wcbuf = GetCommandLineW(); |
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271 size_t wclen = wcslen(wcbuf); |
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272 int wargc = 0; |
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273 wchar_t** wargs = CommandLineToArgvW(wcbuf, &wargc); |
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274 assert(wargc == argc); |
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275 |
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276 char* cargp = null; |
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277 size_t cargl = WideCharToMultiByte(65001, 0, wcbuf, wclen, null, 0, null, 0); |
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278 |
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279 cargp = cast(char*) alloca(cargl); |
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280 args = ((cast(char[]*) alloca(wargc * (char[]).sizeof)))[0 .. wargc]; |
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281 |
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282 for (size_t i = 0, p = 0; i < wargc; i++) |
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283 { |
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284 int wlen = wcslen(wargs[i]); |
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285 int clen = WideCharToMultiByte(65001, 0, &wargs[i][0], wlen, null, 0, null, 0); |
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286 args[i] = cargp[p .. p+clen]; |
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287 p += clen; assert(p <= cargl); |
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288 WideCharToMultiByte(65001, 0, &wargs[i][0], wlen, &args[i][0], clen, null, 0); |
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289 } |
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290 LocalFree(wargs); |
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291 wargs = null; |
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292 wargc = 0; |
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293 } |
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294 else version (Posix) |
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295 { |
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296 char[]* am = cast(char[]*) malloc(argc * (char[]).sizeof); |
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297 scope(exit) free(am); |
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298 |
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299 for (size_t i = 0; i < argc; i++) |
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300 { |
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301 auto len = strlen(argv[i]); |
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302 am[i] = argv[i][0 .. len]; |
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303 } |
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304 args = am[0 .. argc]; |
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305 } |
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306 |
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307 bool trapExceptions = rt_trapExceptions; |
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308 |
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309 void tryExec(scope void delegate() dg) |
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310 { |
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311 |
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312 if (trapExceptions) |
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313 { |
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|
314 try |
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|
315 { |
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316 dg(); |
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317 } |
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318 catch (Throwable e) |
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319 { |
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320 while (e) |
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321 { |
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322 if (e.file) |
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|
323 { |
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|
324 // fprintf(stderr, "%.*s(%u): %.*s\n", e.file, e.line, e.msg); |
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325 console (e.classinfo.name)("@")(e.file)("(")(e.line)("): ")(e.msg)("\n"); |
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326 } |
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327 else |
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328 { |
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329 // fprintf(stderr, "%.*s\n", e.toString()); |
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|
330 console (e.toString)("\n"); |
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|
331 } |
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332 if (e.info) |
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|
333 { |
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|
334 console ("----------------\n"); |
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|
335 foreach (t; e.info) |
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|
336 console (t)("\n"); |
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337 } |
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|
338 if (e.next) |
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339 console ("\n"); |
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340 e = e.next; |
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|
341 } |
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|
342 result = EXIT_FAILURE; |
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343 } |
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|
344 catch (Object o) |
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|
345 { |
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|
346 // fprintf(stderr, "%.*s\n", o.toString()); |
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|
347 console (o.toString)("\n"); |
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348 result = EXIT_FAILURE; |
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349 } |
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|
350 } |
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|
351 else |
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|
352 { |
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|
353 dg(); |
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|
354 } |
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|
355 } |
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|
356 |
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357 // NOTE: The lifetime of a process is much like the lifetime of an object: |
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358 // it is initialized, then used, then destroyed. If initialization |
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359 // fails, the successive two steps are never reached. However, if |
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360 // initialization succeeds, then cleanup will occur even if the use |
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361 // step fails in some way. Here, the use phase consists of running |
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362 // the user's main function. If main terminates with an exception, |
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363 // the exception is handled and then cleanup begins. An exception |
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364 // thrown during cleanup, however, will abort the cleanup process. |
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365 |
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366 void runMain() |
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367 { |
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368 result = main(args); |
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369 } |
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370 |
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371 void runAll() |
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372 { |
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373 gc_init(); |
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374 initStaticDataGC(); |
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375 version (Windows) |
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376 _minit(); |
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377 _moduleCtor(); |
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378 if (runModuleUnitTests()) |
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379 tryExec(&runMain); |
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380 thread_joinAll(); |
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381 _d_isHalting = true; |
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382 _moduleDtor(); |
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383 gc_term(); |
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384 } |
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385 |
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386 tryExec(&runAll); |
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387 |
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388 version (Posix) |
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389 { |
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390 _STD_critical_term(); |
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391 _STD_monitor_staticdtor(); |
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392 } |
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393 return result; |
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394 } |