1 /* |
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2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 #include "Platform.h" |
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27 #include "Lock.h" |
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28 #include "Messages.h" |
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29 |
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30 #include "WindowsPlatform.h" |
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31 #include "LinuxPlatform.h" |
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32 #include "MacPlatform.h" |
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33 |
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34 |
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35 // Environment |
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36 StaticReadProperty<TString, &Environment::GetNewLine> Environment::NewLine; |
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37 |
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38 |
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39 Platform& Platform::GetInstance() { |
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40 |
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41 #ifdef WINDOWS |
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42 static WindowsPlatform instance; |
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43 #endif // WINDOWS |
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44 |
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45 #ifdef LINUX |
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46 static LinuxPlatform instance; |
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47 #endif // LINUX |
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48 |
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49 #ifdef MAC |
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50 static MacPlatform instance; |
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51 #endif // MAC |
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52 return instance; |
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53 } |
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54 |
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55 |
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56 Library::Library() { |
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57 Initialize(); |
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58 } |
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59 |
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60 Library::Library(const TString &FileName) { |
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61 Initialize(); |
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62 Load(FileName); |
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63 } |
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64 |
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65 Library::~Library() { |
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66 Unload(); |
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67 } |
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68 |
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69 void Library::Initialize() { |
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70 FModule = NULL; |
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71 FDependentLibraryNames = NULL; |
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72 FDependenciesLibraries = NULL; |
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73 } |
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74 |
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75 void Library::InitializeDependencies() { |
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76 if (FDependentLibraryNames == NULL) { |
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77 FDependentLibraryNames = new std::vector<TString>(); |
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78 } |
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79 |
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80 if (FDependenciesLibraries == NULL) { |
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81 FDependenciesLibraries = new std::vector<Library*>(); |
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82 } |
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83 } |
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84 |
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85 void Library::LoadDependencies() { |
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86 if (FDependentLibraryNames != NULL && FDependenciesLibraries != NULL) { |
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87 for (std::vector<TString>::const_iterator iterator = |
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88 FDependentLibraryNames->begin(); |
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89 iterator != FDependentLibraryNames->end(); iterator++) { |
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90 Library* library = new Library(); |
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91 |
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92 if (library->Load(*iterator) == true) { |
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93 FDependenciesLibraries->push_back(library); |
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94 } |
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95 } |
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96 |
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97 delete FDependentLibraryNames; |
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98 FDependentLibraryNames = NULL; |
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99 } |
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100 } |
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101 |
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102 void Library::UnloadDependencies() { |
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103 if (FDependenciesLibraries != NULL) { |
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104 for (std::vector<Library*>::const_iterator iterator = |
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105 FDependenciesLibraries->begin(); |
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106 iterator != FDependenciesLibraries->end(); iterator++) { |
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107 Library* library = *iterator; |
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108 |
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109 if (library != NULL) { |
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110 library->Unload(); |
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111 delete library; |
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112 } |
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113 } |
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114 |
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115 delete FDependenciesLibraries; |
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116 FDependenciesLibraries = NULL; |
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117 } |
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118 } |
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119 |
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120 Procedure Library::GetProcAddress(const std::string& MethodName) const { |
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121 Platform& platform = Platform::GetInstance(); |
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122 return platform.GetProcAddress(FModule, MethodName); |
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123 } |
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124 |
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125 bool Library::Load(const TString &FileName) { |
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126 bool result = true; |
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127 |
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128 if (FModule == NULL) { |
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129 LoadDependencies(); |
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130 Platform& platform = Platform::GetInstance(); |
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131 FModule = platform.LoadLibrary(FileName); |
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132 |
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133 if (FModule == NULL) { |
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134 Messages& messages = Messages::GetInstance(); |
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135 platform.ShowMessage(messages.GetMessage(LIBRARY_NOT_FOUND), |
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136 FileName); |
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137 result = false; |
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138 } else { |
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139 fname = PlatformString(FileName).toStdString(); |
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140 } |
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141 } |
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142 |
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143 return result; |
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144 } |
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145 |
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146 bool Library::Unload() { |
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147 bool result = false; |
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148 |
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149 if (FModule != NULL) { |
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150 Platform& platform = Platform::GetInstance(); |
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151 platform.FreeLibrary(FModule); |
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152 FModule = NULL; |
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153 UnloadDependencies(); |
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154 result = true; |
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155 } |
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156 |
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157 return result; |
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158 } |
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159 |
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160 void Library::AddDependency(const TString &FileName) { |
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161 InitializeDependencies(); |
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162 |
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163 if (FDependentLibraryNames != NULL) { |
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164 FDependentLibraryNames->push_back(FileName); |
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165 } |
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166 } |
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167 |
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168 void Library::AddDependencies(const std::vector<TString> &Dependencies) { |
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169 if (Dependencies.size() > 0) { |
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170 InitializeDependencies(); |
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171 |
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172 if (FDependentLibraryNames != NULL) { |
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173 for (std::vector<TString>::const_iterator iterator = |
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174 FDependentLibraryNames->begin(); |
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175 iterator != FDependentLibraryNames->end(); iterator++) { |
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176 TString fileName = *iterator; |
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177 AddDependency(fileName); |
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178 } |
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179 } |
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180 } |
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181 } |
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