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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Name : stdcpp_support.cpp |
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15 // Part of : standard c++ library. |
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16 // |
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17 // |
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18 |
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19 #include <new> |
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20 #include <stdcpp_support.h> |
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21 #include <typeinfo> |
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22 #include <string> |
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23 #include <stdexcept> |
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24 |
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25 |
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26 EXPORT_C void TranslateSymErrorToCppException(TInt aError) |
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27 { |
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28 switch(aError) |
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29 { |
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30 case KErrNoMemory: |
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31 // This is about to use the emergency buffer! |
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32 __THROW(std::bad_alloc()); |
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33 case KErrArgument: |
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34 __THROW(std::invalid_argument("Invalid argument")); |
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35 case KErrOverflow : |
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36 __THROW(std::overflow_error("Overflow error")); |
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37 case KErrUnderflow: |
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38 __THROW(std::underflow_error("Underflow error")); |
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39 default: |
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40 __THROW(Symbian_error(KErrGeneral)); |
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41 } |
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42 } |
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43 |
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44 EXPORT_C TInt TranslateCppExceptionToSymError(const std::exception& aThrow) |
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45 { |
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46 #ifndef __GCCXML__ |
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47 const std::type_info& atype = typeid(aThrow); |
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48 |
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49 if(atype == typeid (std::bad_alloc)) |
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50 return KErrNoMemory; |
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51 else if(atype == typeid(std::invalid_argument)) |
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52 return KErrArgument; |
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53 else if(atype == typeid(std::out_of_range)) |
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54 // std::out_of_range is of type logic_error which by definition means that it is |
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55 // "presumably detectable before the program executes". |
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56 // std::out_of_range is used to report an argument is not within the expected range. |
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57 // The description of KErrArgument says an argument is out of range. Hence the mapping. |
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58 return KErrArgument; |
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59 else if(atype == typeid(std::overflow_error)) |
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60 return KErrOverflow; |
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61 else if(atype == typeid(std::underflow_error)) |
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62 return KErrUnderflow; |
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63 else |
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64 return KErrGeneral; |
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65 #else |
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66 return KErrGeneral; |
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67 #endif |
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68 } |
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69 |
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70 #ifdef __WINSCW__ |
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71 /* |
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72 * The StdC++ global new and delete operators defined here. They are done only for the emulator |
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73 * as for EABI platforms, it is part of the runtime support(i.e., stdnew.dll). |
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74 */ |
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75 #include <e32std.h> |
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76 |
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77 EXPORT_C const std::nothrow_t std::nothrow; |
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78 |
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79 EXPORT_C void* operator new(std::size_t a_size) __THROW(std::bad_alloc) |
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80 { |
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81 for (;;) |
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82 { |
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83 void* p = User::Alloc(a_size); |
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84 |
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85 if (p) |
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86 { |
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87 return p; |
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88 } |
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89 std::new_handler nh_func ; |
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90 std::new_handler *ptr = reinterpret_cast<std::new_handler*>(Dll::Tls()); |
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91 nh_func = (ptr)?(*ptr):NULL; |
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92 |
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93 if (nh_func) |
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94 { |
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95 nh_func(); |
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96 } |
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97 else |
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98 { |
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99 __THROW(std::bad_alloc()); |
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100 } |
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101 } |
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102 } |
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103 |
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104 EXPORT_C void* operator new[](std::size_t a_size) __THROW(std::bad_alloc) |
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105 { |
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106 return ::operator new(a_size); |
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107 } |
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108 |
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109 EXPORT_C void* operator new(std::size_t a_size, const std::nothrow_t&) __NO_THROW |
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110 { |
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111 for (;;) |
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112 { |
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113 void* p = User::Alloc(a_size); |
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114 |
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115 if (p) |
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116 { |
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117 return p; |
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118 } |
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119 |
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120 std::new_handler nh_func ; |
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121 std::new_handler *ptr = reinterpret_cast<std::new_handler*>(Dll::Tls()); |
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122 nh_func = (ptr)?(*ptr):NULL; |
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123 |
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124 if (nh_func) |
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125 { |
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126 try |
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127 { |
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128 nh_func(); |
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129 } |
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130 catch (...) |
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131 { |
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132 return 0; |
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133 } |
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134 } |
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135 else |
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136 { |
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137 return 0; |
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138 } |
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139 } |
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140 } |
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141 |
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142 EXPORT_C void* operator new[](std::size_t a_size, const std::nothrow_t) __NO_THROW |
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143 { |
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144 return ::operator new(a_size, std::nothrow); |
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145 } |
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146 |
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147 // Symbian-specific addition. |
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148 EXPORT_C void* operator new(std::size_t a_size, std::size_t a_extra_size) __NO_THROW |
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149 { |
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150 return ::operator new(a_size + a_extra_size, std::nothrow); |
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151 } |
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152 |
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153 EXPORT_C void operator delete(void* p) __NO_THROW |
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154 { |
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155 User::Free(p); |
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156 } |
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157 |
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158 EXPORT_C void operator delete(void* p, const std::nothrow_t&) __NO_THROW |
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159 { |
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160 User::Free(p); |
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161 } |
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162 |
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163 EXPORT_C void operator delete[](void* p) __NO_THROW |
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164 { |
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165 User::Free(p); |
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166 } |
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167 |
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168 EXPORT_C void operator delete[](void* p, const std::nothrow_t&) __NO_THROW |
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169 { |
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170 User::Free(p); |
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171 } |
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172 |
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173 // Symbian-specific addition. |
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174 EXPORT_C void operator delete(void* p, std::size_t) __NO_THROW |
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175 { |
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176 User::Free(p); |
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177 } |
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178 _LIT(K,"set_new_handler"); |
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179 |
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180 |
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181 using std::new_handler; |
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182 |
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183 EXPORT_C new_handler std::set_new_handler(new_handler a_new_nh) __NO_THROW |
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184 { |
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185 new_handler current_nh; |
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186 TAny* tls_word_p = Dll::Tls(); |
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187 |
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188 if (!tls_word_p) |
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189 { |
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190 // This is the first time we're called, so we need to set up the TLS. |
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191 |
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192 tls_word_p = User::Alloc( sizeof(new_handler) ); |
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193 if ( !tls_word_p ) |
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194 { |
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195 User::Panic(K, KErrNoMemory); |
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196 } |
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197 |
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198 Dll::SetTls(tls_word_p); |
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199 current_nh = 0; |
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200 } |
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201 else |
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202 { |
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203 // Get the currently installed new_handler function. |
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204 current_nh = *reinterpret_cast<new_handler*>(tls_word_p); |
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205 } |
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206 |
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207 // Set the new new_handler. |
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208 *reinterpret_cast<new_handler*>(tls_word_p) = a_new_nh; |
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209 |
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210 return current_nh; |
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211 } |
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212 |
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213 #endif //__WINSCW__ |