src/bindings/ruby/rb_application_handler.c

   1 /* Copyright (c) 2010. The SimGrid Team.
   2  * All rights 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,
  20                                  VALUE properties)
  21 {
  22   ruby_init();
  23   ruby_init_loadpath();
  24   char *p_className = RSTRING(fct_name)->ptr;   // name of process is the one of the class
  25   return rb_funcall(rb_const_get(rb_cObject, rb_intern(p_className)),
  26                     rb_intern("new"), 3, fct_name, arguments, properties);
  27 }
  28
  29 // FIXME: don't mess with MSG internals here, use MSG_process_create_with_arguments()
  30 static void rb_process_create_with_args(VALUE fct_name, VALUE arguments,
  31                                         VALUE properties, VALUE ht_name)
  32 {
  33
  34   VALUE ruby_process =
  35       rb_process_instance(fct_name, arguments, properties);
  36   m_process_t process;          // Native Process to Create
  37   const char *name;             // Name of C Native Processs
  38
  39
  40   if (!fct_name)
  41     rb_raise(rb_eRuntimeError,
  42              "Internal error: Process name cannot be NULL");
  43   name = RSTRING(fct_name)->ptr;
  44   DEBUG1("Create native process %s", name);
  45
  46   // Allocate the data for the simulation
  47   process = xbt_new0(s_m_process_t, 1);
  48   process->simdata = xbt_new0(s_simdata_process_t, 1);
  49   // Bind The Ruby Process instance to The Native Process
  50   rb_process_bind(ruby_process, process);
  51   process->name = xbt_strdup(name);
  52   // Host
  53   m_host_t host = MSG_get_host_by_name(RSTRING(ht_name)->ptr);
  54   process->simdata->m_host = host;
  55
  56   if (!(process->simdata->m_host)) {    // Not Binded
  57     free(process->simdata);
  58     free(process->data);
  59     free(process);
  60     rb_raise(rb_eRuntimeError,
  61              "Host not bound while creating native process");
  62   }
  63
  64   process->simdata->PID = msg_global->PID++;
  65
  66   DEBUG7
  67       ("fill in process %s/%s (pid=%d) %p (sd=%p , host=%p, host->sd=%p)",
  68        process->name, process->simdata->m_host->name,
  69        process->simdata->PID, process, process->simdata,
  70        process->simdata->m_host, process->simdata->m_host->simdata);
  71
  72   /* FIXME: that's mainly for debugging. We could only allocate this if XBT_LOG_ISENABLED(ruby,debug) is true since I guess this leaks */
  73   char **argv = xbt_new(char *, 2);
  74   argv[0] =
  75       bprintf("%s@%s", process->name,
  76               process->simdata->m_host->simdata->smx_host->name);
  77   argv[1] = NULL;
  78   process->simdata->s_process =
  79       SIMIX_process_create(process->name,
  80                            (xbt_main_func_t) ruby_process,
  81                            (void *) process,
  82                            process->simdata->m_host->simdata->
  83                            smx_host->name, 1, argv, NULL);
  84
  85   DEBUG1("context created (s_process=%p)", process->simdata->s_process);
  86
  87   if (SIMIX_process_self()) {   // SomeOne Created Me !!
  88     process->simdata->PPID =
  89         MSG_process_get_PID(SIMIX_process_self()->data);
  90   } else {
  91     process->simdata->PPID = -1;
  92   }
  93   process->simdata->last_errno = MSG_OK;
  94   // let's Add the Process to the list of the Simulation's Processes
  95   xbt_fifo_unshift(msg_global->process_list, process);
  96 }
  97
  98
  99 void rb_application_handler_on_start_document(void)
 100 {
 101
 102
 103   args = rb_ary_new();          // Max length = 16 !!
 104   prop = rb_ary_new();
 105
 106 }
 107
 108 void rb_application_handler_on_end_document(void)
 109 {
 110
 111   args = Qnil;
 112   prop = Qnil;
 113   function_name = Qnil;
 114   host_name = Qnil;
 115 }
 116
 117 void rb_application_handler_on_begin_process(void)
 118 {
 119
 120   host_name = rb_str_new2(A_surfxml_process_host);
 121   function_name = rb_str_new2(A_surfxml_process_function);
 122
 123   args = rb_ary_new();          // Max length = 16 ?!
 124   prop = rb_ary_new();
 125
 126 }
 127
 128 void rb_application_handler_on_process_arg(void)
 129 {
 130
 131   VALUE arg = rb_str_new2(A_surfxml_argument_value);
 132   rb_ary_push(args, arg);
 133 }
 134
 135 void rb_application_handler_on_property(void)
 136 {
 137
 138   VALUE id = rb_str_new2(A_surfxml_prop_id);
 139   VALUE val = rb_str_new2(A_surfxml_prop_value);
 140   int i_id = NUM2INT(id);
 141   rb_ary_store(prop, i_id, val);
 142
 143 }
 144
 145 void rb_application_handler_on_end_process(void)
 146 {
 147
 148   rb_process_create_with_args(function_name, args, prop, host_name);
 149
 150 }