GCC Code Coverage Report

Directory: ./
File: src/BackEnd/backend_proxy_loader.cpp
Date: 2025-03-14 12:14:21
Exec Total Coverage
Lines: 175 179 97.8%
Branches: 249 268 92.9%
Line Branch Exec Source
1 /***************************************
2 Auteur : Pierre Aubert
3 Mail : pierre.aubert@lapp.in2p3.fr
4 Licence : CeCILL-C
5 ****************************************/
6
7 #include "backend.h"
8 #include "backend_proxy_loader.h"
9
10 ///Create the Header definition of the ProxyLoader class
11 /** @param libraryName : name of the library to be created (to avoid multiple definition)
12 * @param className : name of the ProxyLoader class
13 * @return corresponding code
14 */
15 3 PString cpp_backendProxyLoaderHeader(const PString & libraryName, const PString & className){
16
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 3 PString body(cpp_licenceSaveStr());
17
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 6 PString baseMacro("__" + className.toUpper() + "_H__");
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 3 body += "#ifndef " + baseMacro + "\n";
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 3 body += "#define " + baseMacro + "\n\n";
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 3 body += "#include <string>\n\n\n";
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 3 body += "///@brief Class which loads automatically the right sub-library of "+libraryName+"\n";
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 3 body += "class "+className+"{\n";
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 3 body += "\tpublic:\n";
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 3 body += "\t\t"+className+"();\n";
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 3 body += "\t\tvirtual ~"+className+"();\n";
26
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 3 body += "\t\t\n";
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 3 body += "\t\tbool load(const std::string & libName);\n";
28
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 3 body += "\t\tbool parseArchFile(const std::string & archfileName);\n";
29
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 3 body += "\t\tbool isOpen() const;\n";
30
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 3 body += "\t\tvoid close();\n";
31
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 3 body += "\t\t\n";
32
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 3 body += "\t\tvoid updateFunction();\n";
33
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 3 body += "\tprivate:\n";
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 3 body += "\t\tvoid initialisation"+className+"();\n";
35
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 3 body += "\t\t\n";
36
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 3 body += "\t\t///Handle of the library we load\n";
37
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 3 body += "\t\tvoid* p_handle;\n";
38
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 3 body += "};\n\n";
39
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 3 body += "#endif\n\n";
40 6 return body;
41 3 }
42
43 ///Create the Source of the ProxyLoader class constructor
44 /** @param className : name of the ProxyLoader class
45 * @param defaultLib : default library to be use if no extention was found
46 * @return corresponding code
47 */
48 3 PString cpp_backendProxyLoaderConstructorSource(const PString & className, const PString & defaultLib){
49 3 PString body("");
50
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 3 body += "///Default constructor of "+className+"\n";
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 3 body += className+"::"+className+"(){\n";
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 3 body += "\tinitialisation"+className+"();\n";
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 3 body += "\tstd::cout << \""+className+"::"+className+"() : check current architecture\" << std::endl;\n";
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 3 body += "\t//First get the /proc/cpuinfo file\n";
55
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 3 body += "\tif(!parseArchFile(\"/proc/cpuinfo\")){\n";
56
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 3 body += "\t\t//No library found, let's load the default library\n";
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 3 body += "\t\tload(\""+defaultLib+"\");\n";
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 3 body += "\t}\n";
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 3 body += "\tupdateFunction();\n";
60
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 3 body += "}\n\n";
61 3 return body;
62 }
63
64 ///Create the Source of the ProxyLoader class desctructor
65 /** @param className : name of the ProxyLoader class
66 * @return corresponding code
67 */
68 3 PString cpp_backendProxyLoaderDesonstructorSource(const PString & className){
69 3 PString body("");
70
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 3 body += "///Destructor of "+className+"\n";
71
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 3 body += ""+className+"::~"+className+"(){\n";
72
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 3 body += "\tclose();\n";
73
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 3 body += "}\n\n";
74 3 return body;
75 }
76
77 ///Create the Source of the ProxyLoader load
78 /** @param className : name of the ProxyLoader class
79 * @return corresponding code
80 */
81 3 PString cpp_backendProxyLoaderLoadSource(const PString & className){
82 3 PString body("");
83
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 3 body += "///Load the given library\n";
84
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 3 body += "/**\t@param libName : name of the library to be loaded\n";
85
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 3 body += "* \t@return true on success, false otherwise\n";
86
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 3 body += "*/\n";
87
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 3 body += "bool "+className+"::load(const std::string & libName){\n";
88
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 3 body += "\tif(libName == \"\"){return false;}\n";
89
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 3 body += "\tp_handle = dlopen(libName.c_str(), RTLD_LAZY);\n";
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 3 body += "\tstd::cout << \""+className+"::load : loading library '\"<<libName<<\"'\" << std::endl;\n";
91
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 3 body += "\tif(p_handle == NULL){\n";
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 3 body += "\t\tfprintf(stderr, \""+className+"::load : %s\\n\", dlerror());\n";
93
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 3 body += "\t\treturn false;\n";
94
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 3 body += "\t}\n";
95
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 3 body += "\tdlerror(); //Erase an exsiting error\n";
96
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 3 body += "\treturn true;\n";
97
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 3 body += "}\n\n";
98 3 return body;
99 }
100
101
102 ///Create the Source of the ProxyLoader load
103 /** @param vecArchLib : vector of library to be loaded on the fly by respect to the host architecture
104 * @param className : name of the ProxyLoader class
105 * @param libDir : directory where the sub libraries are installed
106 * @return corresponding code
107 */
108 3 PString cpp_backendProxyLoaderParseArchFileSource(const PVecArchLib & vecArchLib, const PString & className, const PPath & libDir){
109
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 3 PString body("");
110
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 3 body += "///Parse the given architecture file\n";
111
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 3 body += "/**\t@param archfileName : name of the architecture file to be loaded\n";
112
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 3 body += "* \t@return true on success, false otherwise\n";
113
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 3 body += "*/\n";
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 3 body += "bool "+className+"::parseArchFile(const std::string & archfileName){\n";
115
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 3 body += "\tFILE * fp = fopen(archfileName.c_str(), \"r\");\n";
116
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 3 body += "\tif(fp == NULL){\n";
117
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 3 body += "\t\tstd::cerr << \"Cannot open file '\" << archfileName << \"'\" << std::endl;\n";
118
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 3 body += "\t\treturn false;\n";
119
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 3 body += "\t}\n";
120
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 3 body += "\tstd::string bufferAllFile(\"\");\n";
122
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 3 body += "\tint buffer;\n";
123
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 3 body += "\twhile(!feof(fp)){\n";
124
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 3 body += "\t\tbuffer = fgetc(fp);\n";
125
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 3 body += "\t\tif(buffer != EOF) bufferAllFile += (char)buffer;\n";
126
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 3 body += "\t\telse break;\n";
127
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 3 body += "\t}\n";
128
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 3 body += "\tif(bufferAllFile == \"\"){\n";
129
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 3 body += "\t\tstd::cerr << \"Empty file '\" << archfileName << \"'\" << std::endl;\n";
130
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 3 body += "\t\treturn false;\n\t}\n";
131
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 3 body += "\tconst char * procCpuInfo = bufferAllFile.c_str();\n";
132 //The following method does not work with text file for some reason
133 // body += "\t//Let's get the file size\n";
134 // body += "\tfseek(fp, 0, SEEK_END);\n";
135 // body += "\tsize_t fileSize(ftell(fp));\n";
136 // body += "\tfseek(fp, 0, SEEK_SET);\n";
137 // body += "\tif(fileSize == 0lu){\n";
138 // body += "\t\tstd::cerr << \"Empty file '\" << archfileName << \"'\" << std::endl;\n";
139 // body += "\t\treturn false;\n";
140 // body += "\t}\n";
141 // body += "\t//Now we can alloate the table to get the file content\n";
142 // body += "\tchar * procCpuInfo = new char[fileSize];\n";
143 // body += "\t//And load the file\n";
144 // body += "\tif(fread(procCpuInfo, sizeof(char), fileSize, fp) != fileSize){\n";
145 // body += "\t\tstd::cerr << \"Cannot read file '\" << archfileName << \"'\" << std::endl;\n";
146 // body += "\t\treturn false;\n\t}\n";
147
148
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 3 body += "\t//Let's check the avalaible architectures\n";
149
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 3 body += "\tbool isLibFound(true);\n";
150
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 3 PString strElse("\t"), libraryFullDirectory("");
151
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 3 if(libDir != ""){
152
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 3 libraryFullDirectory = libDir + "/";
153 }
154
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 25 for(PVecArchLib::const_reverse_iterator it(vecArchLib.rbegin()); it != vecArchLib.rend(); ++it){
155
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 22 body += strElse + "if(strstr(procCpuInfo, \""+it->getArchitecture()+"\") != NULL){\n";
156
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 44 PPath libName(libraryFullDirectory + it->getName().getFileName());
157
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 22 body += "\t\tload(\""+libName+"\");\n";
158
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 22 body += "\t}";
159
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 22 strElse = "else ";
160 22 }
161
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 3 body += "else{\n\t\tisLibFound = false;\n\t}\n";
162
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 3 body += "\n";
163
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 3 body += "\tfclose(fp);\n";
164 // body += "\tdelete [] procCpuInfo;\n";
165
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 3 body += "\treturn isLibFound;\n";
166
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 3 body += "}\n\n";
167 6 return body;
168 3 }
169
170 ///Create the Source of the ProxyLoader isOpen
171 /** @param className : name of the ProxyLoader class
172 * @return corresponding code
173 */
174 3 PString cpp_backendProxyLoaderIsOpenSource(const PString & className){
175 3 PString body("");
176
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 3 body += "///Say if the current library is opened or not\n";
177
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 3 body += "/**\t@return true if the current library is opened, false otherwise\n";
178
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 3 body += "*/\n";
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 3 body += "bool "+className+"::isOpen() const{\n";
180
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 3 body += "\treturn p_handle != NULL;\n";
181
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 3 body += "}\n\n";
182 3 return body;
183 }
184
185 ///Create the Source of the ProxyLoader close
186 /** @param className : name of the ProxyLoader class
187 * @return corresponding code
188 */
189 3 PString cpp_backendProxyLoaderCloseSource(const PString & className){
190 3 PString body("");
191
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 3 body += "///Close the current library\n";
192
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 3 body += "void "+className+"::close(){\n";
193
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 3 body += "\tif(isOpen()){\n";
194
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 3 body += "\t\tdlclose(p_handle);\n";
195
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 3 body += "\t}\n";
196
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 3 body += "}\n\n";
197 3 return body;
198 }
199
200 ///Create the Source of the ProxyLoader update
201 /** @param className : name of the ProxyLoader class
202 * @param vecSource : vector of source
203 * @return corresponding code
204 */
205 3 PString cpp_backendProxyLoaderUpdateSource(const PString & className, const PVecSource & vecSource){
206 3 PString body("");
207
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 3 body += "///Update the functions to be used\n";
208
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 3 body += "void "+className+"::updateFunction(){\n";
209
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 3 body += "\tif(!isOpen()){exit(-1);return;}\n";
210
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 3 body += "\t//Then set all the function pointers\n";
211
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 6 for(PVecSource::const_iterator it(vecSource.begin()); it != vecSource.end(); ++it){
212
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 3 body += "\t"+getUpdateFunction(it->getName())+"(p_handle);\n";
213 }
214
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 3 body += "}\n\n";
215 3 return body;
216 }
217
218 ///Create the Source of the ProxyLoader initialisation
219 /** @param className : name of the ProxyLoader class
220 * @return corresponding code
221 */
222 3 PString cpp_backendProxyLoaderInitialisationSource(const PString & className){
223 3 PString body("");
224
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 3 body += "///Initialisation function of the class "+className+"\n";
225
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 3 body += "void "+className+"::initialisation"+className+"(){\n";
226
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 3 body += "\tp_handle = NULL;\n";
227
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 3 body += "}\n\n";
228 3 return body;
229 }
230
231 ///Create the Source of the ProxyLoader class
232 /** @param vecSource : vector of source
233 * @param vecArchLib : vector of library to be loaded on the fly by respect to the host architecture
234 * @param className : name of the ProxyLoader class
235 * @param libDir : directory where the sub libraries are installed
236 * @return corresponding code
237 */
238 3 PString cpp_backendProxyLoaderSource(const PVecSource & vecSource, const PVecArchLib & vecArchLib,
239 const PString & className, const PString & libDir)
240 {
241
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 3 PString body(cpp_licenceSaveStr());
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 3 body += "#include <stdio.h>\n";
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 3 body += "#include <stdlib.h>\n";
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 3 body += "#include <dlfcn.h>\n";
245
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 3 body += "#include <string.h>\n\n";
246
247
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 6 for(PVecSource::const_iterator it(vecSource.begin()); it != vecSource.end(); ++it){
248
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 3 body += "#include \""+it->getName()+".h\"\n";
249 }
250
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 3 body += "\n#include \""+className+".h\"\n\n";
251
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 3 body += "///Variable which will load automatically the right library by respect to the given architecture\n";
252
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 3 body += className + " PROXY_LOADER;\n\n";
253
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 6 PString defaultLib(getLibraryFile(vecArchLib).getFileName());
254
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 3 body += cpp_backendProxyLoaderConstructorSource(className, defaultLib);
255
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 3 body += cpp_backendProxyLoaderDesonstructorSource(className);
256
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 3 body += cpp_backendProxyLoaderLoadSource(className);
257
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 3 body += cpp_backendProxyLoaderParseArchFileSource(vecArchLib, className, libDir);
258
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 3 body += cpp_backendProxyLoaderIsOpenSource(className);
259
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 3 body += cpp_backendProxyLoaderCloseSource(className);
260
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 3 body += cpp_backendProxyLoaderUpdateSource(className, vecSource);
261
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 3 body += cpp_backendProxyLoaderInitialisationSource(className);
262 6 return body;
263 3 }
264
265 ///Save ProxyLoader with the corresponding a vector of PSource in the output directory
266 /** @param vecSource : vector of source
267 * @param libraryName : name of the library to be created
268 * @param vecArchLib : vector of library to be loaded on the fly by respect to the host architecture
269 * @param libDir : directory where the sub libraries are installed
270 * @param outputDir : output directory where to save ProxyLoader
271 * @return true on success, false otherwise
272 */
273 3 bool cpp_backend_proxy(const PVecSource & vecSource, const PString & libraryName, const PVecArchLib & vecArchLib, const PPath & libDir, const PPath & outputDir){
274
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 6 PString className(PString(libraryName + "ProxyLoader").firstToUpper());
275
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 3 PString headerSrc(cpp_backendProxyLoaderHeader(libraryName, className));
276
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 3 PString sourceSrc(cpp_backendProxyLoaderSource(vecSource, vecArchLib, className, libDir));
277
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 6 PPath outputHeaderFile(outputDir + "/" + className + ".h");
278
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 6 PPath outputSourceFile(outputDir + "/" + className + ".cpp");
279
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 3 if(!outputHeaderFile.saveFileContent(headerSrc)){
280 ✗ std::cerr << "cpp_backend : cannot save header file '"<<outputHeaderFile<<"'" << std::endl;
281 ✗ return false;
282 }
283
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 3 if(!outputSourceFile.saveFileContent(sourceSrc)){
284 ✗ std::cerr << "cpp_backend : cannot save source file '"<<outputSourceFile<<"'" << std::endl;
285 ✗ return false;
286 }
287 3 return true;
288 3 }
289
290
291