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 static VALUE rb_process_instance(VALUE fct_name,VALUE arguments,VALUE properties) {
  20   ruby_init();
  21   ruby_init_loadpath();
  22   char * p_className = RSTRING(fct_name)->ptr; // name of process is the one of the class
  23   return rb_funcall(rb_const_get(rb_cObject, rb_intern(p_className)),rb_intern("new"),3,fct_name,arguments,properties);
  24 }
  25
  26 // FIXME: don't mess with MSG internals here, use MSG_process_create_with_arguments()
  27 static void rb_process_create_with_args(VALUE fct_name, VALUE arguments,
  28                                         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
  35   if(!fct_name)
  36     rb_raise(rb_eRuntimeError,"Internal error: Process name cannot be NULL");
  37   name = RSTRING(fct_name)->ptr;
  38   DEBUG1("Create native process %s",name);
  39
  40   // Allocate the data for the simulation
  41   process = xbt_new0(s_m_process_t,1);
  42   process->simdata = xbt_new0(s_simdata_process_t,1);
  43   // Bind The Ruby Process instance to The Native Process
  44   rb_process_bind(ruby_process,process);
  45   process->name = xbt_strdup(name);
  46   // Host
  47   m_host_t host = MSG_get_host_by_name(RSTRING(ht_name)->ptr);
  48   process->simdata->m_host = host;
  49
  50   if(!(process->simdata->m_host)) { // Not Binded
  51     free(process->simdata);
  52     free(process->data);
  53     free(process);
  54     rb_raise(rb_eRuntimeError,"Host not bound while creating native process");
  55   }
  56
  57   process->simdata->PID = msg_global->PID++;
  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   /* FIXME: that's mainly for debugging. We could only allocate this if XBT_LOG_ISENABLED(ruby,debug) is true since I guess this leaks */
  65   char **argv=xbt_new(char*,2);
  66   argv[0] = bprintf("%s@%s",process->name,process->simdata->m_host->simdata->smx_host->name);
  67   argv[1] = NULL;
  68   process->simdata->s_process =
  69       SIMIX_process_create(process->name,
  70           (xbt_main_func_t)ruby_process,
  71           (void *) process,
  72           process->simdata->m_host->simdata->smx_host->name,
  73           1,argv,NULL);
  74
  75   DEBUG1("context created (s_process=%p)",process->simdata->s_process);
  76
  77   if (SIMIX_process_self()) { // SomeOne Created Me !!
  78     process->simdata->PPID = MSG_process_get_PID(SIMIX_process_self()->data);
  79   } else {
  80     process->simdata->PPID = -1;
  81   }
  82   process->simdata->last_errno = MSG_OK;
  83   // let's Add the Process to the list of the Simulation's Processes
  84   xbt_fifo_unshift(msg_global->process_list,process);
  85 }
  86
  87
  88 void rb_application_handler_on_start_document(void) {
  89
  90
  91    args = rb_ary_new();  // Max length = 16 !!
  92    prop = rb_ary_new();
  93
  94 }
  95
  96 void rb_application_handler_on_end_document(void) {
  97
  98   args = Qnil;
  99   prop = Qnil;
 100   function_name = Qnil;
 101   host_name = Qnil;
 102 }
 103
 104 void rb_application_handler_on_begin_process(void) {
 105
 106   host_name = rb_str_new2(A_surfxml_process_host);
 107   function_name = rb_str_new2(A_surfxml_process_function);
 108
 109   args = rb_ary_new();  // Max length = 16 ?!
 110   prop = rb_ary_new();
 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
 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 void rb_application_handler_on_end_process(void) {
 130
 131   rb_process_create_with_args(function_name,args,prop,host_name);
 132
 133 }