src/cxx/ApplicationHandler.cxx

   1 /*\r
   2  * ApplicationHandler.cxx\r
   3  *\r
   4  * Copyright 2006,2007 Martin Quinson, Malek Cherier           \r
   5  * All right reserved. \r
   6  *\r
   7  * This program is free software; you can redistribute \r
   8  * it and/or modify it under the terms of the license \r
   9  *(GNU LGPL) which comes with this package. \r
  10  *\r
  11  */\r
  12  \r
  13  /* ApplicationHandler member functions implementation.\r
  14   */  \r
  15   \r
  16 #include <ApplicationHandler.hpp>\r
  17 \r
  18 namespace SimGrid\r
  19 {\r
  20         namespace Msg\r
  21         {\r
  22 \r
  23                 ApplicationHandler::ProcessFactory::processFactory = NULL;\r
  24                         \r
  25                 // Desable the default constructor, the copy constructor , the assignement operator\r
  26                 // and the destructor of this class. Assume that this class is static.\r
  27                 \r
  28                 // Default constructor.\r
  29                 ApplicationHandler::ApplicationHandler()\r
  30                 {\r
  31                         // NOTHING TODO\r
  32                 }\r
  33                 \r
  34                 // Copy constructor.\r
  35                 ApplicationHandler::ApplicationHandler(const ApplicationHandler& rApplicationHandler)\r
  36                 {\r
  37                         // NOTHING TODO\r
  38                 }\r
  39                 \r
  40                 // Destructor\r
  41                 ApplicationHandler::~ApplicationHandler()\r
  42                 {\r
  43                         // NOTHING TODO\r
  44                 }\r
  45                 \r
  46                 // Assignement operator.\r
  47                 const ApplicationHandler& ApplicationHandler::operator = (const ApplicationHandler& rApplicationHandler)\r
  48                 {\r
  49                         return *this;\r
  50                 }\r
  51                 \r
  52                 void ApplicationHandler::onStartDocument(void)\r
  53                 {\r
  54                         // instanciate the factory at the begining of the parsing\r
  55                         processFactory = new ProcessFactory();  \r
  56                 }\r
  57                 \r
  58                 void ApplicationHandler::onEndDocument(void)\r
  59                 {\r
  60                         // release the handler at the end of the parsing.\r
  61                         if(processFactory)\r
  62                                 delete processFactroy;\r
  63                 }\r
  64                         \r
  65                 void ApplicationHandler::onBeginProcess(void)\r
  66                 {\r
  67                         // set the process identity at the begin of the xml process element.\r
  68                         processFactory->setProcessIdentity(A_surfxml_process_host, A_surfxml_process_function);\r
  69                 }               \r
  70                 \r
  71                 void ApplicationHandler::onProcessArg(void)\r
  72                 {\r
  73                         // register the argument of the current xml process element.\r
  74                         processFactory->registerProcessArg(A_surfxml_argument_value);\r
  75                 }\r
  76                 \r
  77                 void ApplicationHandler::OnProperty(void)\r
  78                 {\r
  79                         // set the property of the current xml process element.\r
  80                          processFactory->setProperty(A_surfxml_prop_id, A_surfxml_prop_value);\r
  81                 }\r
  82                 \r
  83                 void ApplicationHandler::onEndProcess(void)\r
  84                 {\r
  85                         // at the end of the xml process element create the wrapper process (of the native Msg process)\r
  86                         processFactory->createProcess();\r
  87                 }\r
  88                 \r
  89                 /////////////////////////////////////////////////////////////////////////////////////////////////\r
  90                 // Process factory connected member functions\r
  91                 \r
  92                 ApplicationHandler::ProcessFactory::ProcessFactory() \r
  93                 {\r
  94                         this->args = xbt_dynar_new(sizeof(char*),ProcessFactory::freeCstr);\r
  95                         this->properties = NULL; // TODO instanciate the dictionary\r
  96                         this->hostName = NULL;\r
  97                         this->function = NULL;\r
  98                 }      \r
  99                 \r
 100                 // create the cxx process wrapper.\r
 101                 void ApplicationHandler::ProcessFactory::createProcess() \r
 102                 throw (ClassNotFoundException, HostNotFoundException)\r
 103                 {\r
 104                         Host host;\r
 105                         Process* process;\r
 106                         \r
 107                         // try to dynamicaly create an instance fo the process from its name (which is specified by the element function\r
 108                         // in the xml application file.\r
 109                         // if this static method fails, it throws an exception of the class ClassNotFoundException\r
 110                         process = (Process*)Class::fromName(this->function);\r
 111                         \r
 112                         // try to retrieve the host of the process from its name\r
 113                         // if this method fails, it throws an exception of the class HostNotFoundException\r
 114                         host = Host::getByName(this->hostName); \r
 115                         \r
 116                         // build the list of the arguments of the newly created process.\r
 117                         int argc = xbt_dynar_length(this->args);\r
 118                         \r
 119                         char** argv = (char**)calloc(argc, sizeof(char*));\r
 120                         \r
 121                         for(int i = 0; i < argc; i++)\r
 122                                 xbt_dynar_pop(this->args, &(argv[i]));\r
 123                         \r
 124                         // finaly create the process (for more detail on the process creation see Process::create()\r
 125                         process->create(host, this->function , argc, argv);\r
 126                         \r
 127                         // TODO add the properties of the process\r
 128                         /*process->properties = this->properties;\r
 129                         this->properties = new Properties();*/\r
 130                 }\r
 131                         \r
 132                 void ApplicationHandler::ProcessFactory::setProcessIdentity(const string& hostName, const string& function) \r
 133                 {\r
 134                         this->hostName = hostName;\r
 135                         this->function = function;\r
 136                 \r
 137                         /*if (!this->args->empty())\r
 138                                 this->args->clear();\r
 139                 \r
 140                         if(!this->properties->empty())\r
 141                                 this->properties->clear();*/\r
 142                 }\r
 143                 \r
 144                 // callback function used by the dynamic array to cleanup all of its elements.\r
 145                 void ApplicationHandler::ProcessFactory::freeCstr(void* cstr)\r
 146                 {\r
 147                         free(*(void**)str);\r
 148                 }\r
 149                 \r
 150                 void ApplicationHandler::ProcessFactory::registerProcessArg(const char* arg) \r
 151                 {\r
 152                         char* cstr = strdup(arg);\r
 153                         xbt_dynar_push(this->args, &cstr);\r
 154                 }\r
 155                 \r
 156                 void ApplicationHandler::ProcessFactory::setProperty(const char* id, const char* value)\r
 157                 {\r
 158                         // TODO implement this function;        \r
 159                 }\r
 160                 \r
 161                 const const char* ApplicationHandler::ProcessFactory::getHostName(void)\r
 162                 {\r
 163                         return this->hostName;\r
 164                 }\r
 165 \r
 166         } // namespace Msg\r
 167 } // namespace SimGrid