src/bindings/ruby/rb_application_handler.c

   1 /*
   2  * Copyright 2010. The SimGrid Team. All right reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package.
   6  */
   7 #include "bindings/ruby_bindings.h"
   8 #include "surf/surfxml_parse.h"
   9 #include "msg/private.h" /* s_simdata_process_t FIXME: don't mess with MSG internals that way */
  10
  11 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ruby);
  12
  13 // Used to instanciate the Process
  14 static  VALUE args;
  15 static  VALUE prop;
  16 static  VALUE function_name;
  17 static  VALUE host_name;
  18
  19
  20 static VALUE rb_process_instance(VALUE fct_name,VALUE arguments,VALUE properties) {
  21   ruby_init();
  22   ruby_init_loadpath();
  23   char * p_className = RSTRING(fct_name)->ptr; // name of process is the one of the class
  24   return rb_funcall(rb_const_get(rb_cObject, rb_intern(p_className)),rb_intern("new"),3,fct_name,arguments,properties);
  25 }
  26
  27 // FIXME: don't mess with MSG internals here, use MSG_process_create_with_arguments()
  28 static void rb_process_create_with_args(VALUE fct_name,VALUE arguments,VALUE properties,VALUE ht_name) {
  29
  30   VALUE ruby_process = rb_process_instance(fct_name,arguments,properties);
  31   m_process_t process; // Native Process to Create
  32   const char * name ; // Name of C Native Processs
  33
  34   if(!fct_name)
  35     rb_raise(rb_eRuntimeError,"Internal error: Process name cannot be NULL");
  36
  37   // Allocate the data for the simulation
  38   process = xbt_new0(s_m_process_t,1);
  39   process->simdata = xbt_new0(s_simdata_process_t,1);
  40   // Do we Really Need to Create Ruby Process Instance , >> process is already a Ruby Process !! So..Keep on ;)
  41   // Bind The Ruby Process instance to The Native Process
  42   rb_process_bind(ruby_process,process);
  43   name = RSTRING(fct_name)->ptr;
  44   process->name = xbt_strdup(name);
  45   // Host
  46   m_host_t host = MSG_get_host_by_name(RSTRING(ht_name)->ptr);
  47   process->simdata->m_host = host;
  48
  49   //Data_Get_Struct(host,s_m_host_t,process->simdata->m_host);
  50
  51   if(!(process->simdata->m_host)) { // Not Binded
  52     free(process->simdata);
  53     free(process->data);
  54     free(process);
  55     rb_raise(rb_eRuntimeError,"Host not bound while creating native process");
  56   }
  57   process->simdata->PID = msg_global->PID++; //  msg_global ??
  58
  59   DEBUG7("fill in process %s/%s (pid=%d) %p (sd=%p , host=%p, host->sd=%p)",
  60       process->name , process->simdata->m_host->name,process->simdata->PID,
  61       process,process->simdata, process->simdata->m_host,
  62       process->simdata->m_host->simdata);
  63
  64
  65   /* FIXME: that's mainly for debugging. We could only allocate this if XBT_LOG_ISENABLED(ruby,debug) is true since I guess this leaks */
  66   char **argv=xbt_new(char*,2);
  67   argv[0] = bprintf("%s@%s",process->name,process->simdata->m_host->simdata->smx_host->name);
  68   argv[1] = NULL;
  69   process->simdata->s_process =
  70       SIMIX_process_create(process->name,
  71           (xbt_main_func_t)ruby_process,
  72           (void *) process,
  73           process->simdata->m_host->simdata->smx_host->name,
  74           1,argv,NULL);
  75
  76   DEBUG1("context created (s_process=%p)",process->simdata->s_process);
  77
  78   if (SIMIX_process_self()) { // SomeOne Created Me !!
  79     process->simdata->PPID = MSG_process_get_PID(SIMIX_process_self()->data);
  80   } else {
  81     process->simdata->PPID = -1;
  82   }
  83   process->simdata->last_errno = MSG_OK;
  84   // let's Add the Process to the list of the Simulation's Processes
  85   xbt_fifo_unshift(msg_global->process_list,process);
  86 }
  87
  88
  89
  90
  91 void rb_application_handler_on_start_document(void) {
  92
  93    args = rb_ary_new();  // Max lenght = 16 ?!
  94    prop = rb_ary_new();
  95 }
  96
  97 void rb_application_handler_on_end_document(void) {
  98   // FIXME: probably leaking
  99   //application_handler_class = Qnil;
 100   args = Qnil;
 101   prop = Qnil;
 102   function_name = Qnil;
 103   host_name = Qnil;
 104
 105 }
 106
 107 void rb_application_handler_on_begin_process(void) {
 108
 109   host_name = rb_str_new2(A_surfxml_process_host);
 110   function_name = rb_str_new2(A_surfxml_process_function);
 111
 112 }
 113
 114 void rb_application_handler_on_process_arg(void) {
 115
 116   VALUE arg = rb_str_new2(A_surfxml_argument_value);
 117   rb_ary_push(args,arg);
 118 }
 119
 120 void rb_application_handler_on_property(void) {
 121   // FIXME: properties are never added to the ruby process
 122   VALUE id = rb_str_new2(A_surfxml_prop_id);
 123   VALUE val =  rb_str_new2(A_surfxml_prop_value);
 124   int i_id = NUM2INT (id);
 125   rb_ary_store(prop,i_id,val);
 126
 127 }
 128
 129
 130 void rb_application_handler_on_end_process(void) {
 131
 132   rb_process_create_with_args(function_name,args,prop,host_name);
 133
 134 }
 135
 136