src/simix/smx_environment.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2007 Arnaud Legrand, Bruno Donnassolo.
   4    All rights reserved.                                          */
   5
   6 /* This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the license (GNU LGPL) which comes with this package. */
   8
   9 #include "private.h"
  10 #include "xbt/sysdep.h"
  11 #include "xbt/log.h"
  12 #include "xbt/xbt_os_time.h"
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_environment, simix,
  15                                 "Logging specific to SIMIX (environment)");
  16
  17 /********************************* SIMIX **************************************/
  18
  19 /**
  20  * \brief A platform constructor.
  21  *
  22  * Creates a new platform, including hosts, links and the
  23  * routing_table.
  24  * \param file a filename of a xml description of a platform. This file
  25  * follows this DTD :
  26  *
  27  *     \include surfxml.dtd
  28  *
  29  * Here is a small example of such a platform
  30  *
  31  *     \include small_platform.xml
  32  *
  33  */
  34 void SIMIX_create_environment(const char *file)
  35 {
  36   int parsed = 0;
  37   xbt_dict_cursor_t cursor = NULL;
  38   char *name = NULL;
  39   void *workstation = NULL;
  40   char *workstation_model_name;
  41   int workstation_id = -1;
  42   double start, end;
  43
  44   simix_config_init();          /* make sure that our configuration set is created */
  45   surf_timer_model_init(file);
  46
  47   /* which model do you want today? */
  48   workstation_model_name =
  49       xbt_cfg_get_string(_simix_cfg_set, "workstation_model");
  50
  51   DEBUG1("Model : %s", workstation_model_name);
  52   workstation_id =
  53       find_model_description(surf_workstation_model_description,
  54                                 surf_workstation_model_description_size,
  55                                 workstation_model_name);
  56   if (!strcmp(workstation_model_name, "compound")) {
  57     xbt_ex_t e;
  58     char *network_model_name = NULL;
  59     char *cpu_model_name = NULL;
  60     int network_id = -1;
  61     int cpu_id = -1;
  62
  63     TRY {
  64       cpu_model_name = xbt_cfg_get_string(_simix_cfg_set, "cpu_model");
  65     } CATCH(e) {
  66       if (e.category == bound_error) {
  67         xbt_assert0(0,
  68                     "Set a cpu model to use with the 'compound' workstation model");
  69         xbt_ex_free(e);
  70       } else {
  71         RETHROW;
  72       }
  73     }
  74
  75     TRY {
  76       network_model_name =
  77           xbt_cfg_get_string(_simix_cfg_set, "network_model");
  78     }
  79     CATCH(e) {
  80       if (e.category == bound_error) {
  81         xbt_assert0(0,
  82                     "Set a network model to use with the 'compound' workstation model");
  83         xbt_ex_free(e);
  84       } else {
  85         RETHROW;
  86       }
  87     }
  88
  89     network_id =
  90         find_model_description(surf_network_model_description,
  91                                   surf_network_model_description_size,
  92                                   network_model_name);
  93     cpu_id =
  94         find_model_description(surf_cpu_model_description,
  95                                   surf_cpu_model_description_size,
  96                                   cpu_model_name);
  97
  98     surf_cpu_model_description[cpu_id].model_init(file);
  99     surf_network_model_description[network_id].model_init(file);
 100
 101     start = xbt_os_time();
 102     parse_platform_file(file);
 103     end = xbt_os_time();
 104     DEBUG1("PARSE TIME: %lg", (end-start));
 105     parsed = 1;
 106   }
 107
 108   surf_workstation_model_description[workstation_id].
 109       model_init(file);
 110
 111   if  (!parsed)  {
 112     start = xbt_os_time();
 113     parse_platform_file(file);
 114     if (surf_workstation_model_description[workstation_id].create_ws != NULL)
 115       surf_workstation_model_description[workstation_id].create_ws();
 116     end = xbt_os_time();
 117     DEBUG1("PARSE TIME: %lg", (end-start));
 118   }
 119
 120   _simix_init_status = 2;       /* inited; don't change settings now */
 121
 122   xbt_dict_foreach(workstation_set, cursor, name, workstation) {
 123     __SIMIX_host_create(name, workstation, NULL);
 124   }
 125
 126   return;
 127 }