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,VALUE properties,VALUE ht_name) {
  28
  29   VALUE ruby_process = rb_process_instance(fct_name,arguments,properties);
  30   m_process_t process; // Native Process to Create
  31   const char * name ; // Name of C Native Processs
  32
  33
  34   if(!fct_name)
  35     rb_raise(rb_eRuntimeError,"Internal error: Process name cannot be NULL");
  36   name = RSTRING(fct_name)->ptr;
  37   DEBUG1("Create native process %s",name);
  38
  39   // Allocate the data for the simulation
  40   process = xbt_new0(s_m_process_t,1);
  41   process->simdata = xbt_new0(s_simdata_process_t,1);
  42   // Bind The Ruby Process instance to The Native Process
  43   rb_process_bind(ruby_process,process);
  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   if(!(process->simdata->m_host)) { // Not Binded
  50     free(process->simdata);
  51     free(process->data);
  52     free(process);
  53     rb_raise(rb_eRuntimeError,"Host not bound while creating native process");
  54   }
  55
  56   process->simdata->PID = msg_global->PID++;
  57
  58   DEBUG7("fill in process %s/%s (pid=%d) %p (sd=%p , host=%p, host->sd=%p)",
  59       process->name , process->simdata->m_host->name,process->simdata->PID,
  60       process,process->simdata, process->simdata->m_host,
  61       process->simdata->m_host->simdata);
  62
  63   /* FIXME: that's mainly for debugging. We could only allocate this if XBT_LOG_ISENABLED(ruby,debug) is true since I guess this leaks */
  64   char **argv=xbt_new(char*,2);
  65   argv[0] = bprintf("%s@%s",process->name,process->simdata->m_host->simdata->smx_host->name);
  66   argv[1] = NULL;
  67   process->simdata->s_process =
  68       SIMIX_process_create(process->name,
  69           (xbt_main_func_t)ruby_process,
  70           (void *) process,
  71           process->simdata->m_host->simdata->smx_host->name,
  72           1,argv,NULL);
  73
  74   DEBUG1("context created (s_process=%p)",process->simdata->s_process);
  75
  76   if (SIMIX_process_self()) { // SomeOne Created Me !!
  77     process->simdata->PPID = MSG_process_get_PID(SIMIX_process_self()->data);
  78   } else {
  79     process->simdata->PPID = -1;
  80   }
  81   process->simdata->last_errno = MSG_OK;
  82   // let's Add the Process to the list of the Simulation's Processes
  83   xbt_fifo_unshift(msg_global->process_list,process);
  84 }
  85
  86
  87 void rb_application_handler_on_start_document(void) {
  88
  89
  90    args = rb_ary_new();  // Max lenght = 16 !!
  91    prop = rb_ary_new();
  92
  93 }
  94
  95 void rb_application_handler_on_end_document(void) {
  96
  97   args = Qnil;
  98   prop = Qnil;
  99   function_name = Qnil;
 100   host_name = Qnil;
 101 }
 102
 103 void rb_application_handler_on_begin_process(void) {
 104
 105   host_name = rb_str_new2(A_surfxml_process_host);
 106   function_name = rb_str_new2(A_surfxml_process_function);
 107
 108   args = rb_ary_new();  // Max lenght = 16 ?!
 109   prop = rb_ary_new();
 110
 111 }
 112
 113 void rb_application_handler_on_process_arg(void) {
 114
 115   VALUE arg = rb_str_new2(A_surfxml_argument_value);
 116   rb_ary_push(args,arg);
 117 }
 118
 119 void rb_application_handler_on_property(void) {
 120
 121   VALUE id = rb_str_new2(A_surfxml_prop_id);
 122   VALUE val =  rb_str_new2(A_surfxml_prop_value);
 123   int i_id = NUM2INT (id);
 124   rb_ary_store(prop,i_id,val);
 125
 126 }
 127
 128 void rb_application_handler_on_end_process(void) {
 129
 130   rb_process_create_with_args(function_name,args,prop,host_name);
 131
 132 }