src/simix/smx_deployment.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2007 Arnaud Legrand, Bruno Donassolo.
   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
  10 #include "private.h"
  11 #include "xbt/sysdep.h"
  12 #include "xbt/log.h"
  13 #include "xbt/dict.h"
  14 #include "surf/surfxml_parse_private.h"
  15
  16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_deployment, simix,
  17                                 "Logging specific to SIMIX (deployment)");
  18 static int parse_argc = -1;
  19 static char **parse_argv = NULL;
  20 static xbt_main_func_t parse_code = NULL;
  21 static char *parse_host = NULL;
  22 static double start_time = 0.0;
  23 static double kill_time = -1.0;
  24
  25 static void parse_process_init(void)
  26 {
  27   parse_host = xbt_strdup(A_surfxml_process_host);
  28   xbt_assert1(SIMIX_host_get_by_name(parse_host),
  29               "Unknown host %s", parse_host);
  30   parse_code = SIMIX_get_registered_function(A_surfxml_process_function);
  31   xbt_assert1(parse_code, "Unknown function %s",
  32               A_surfxml_process_function);
  33   parse_argc = 0;
  34   parse_argv = NULL;
  35   parse_argc++;
  36   parse_argv = xbt_realloc(parse_argv, (parse_argc) * sizeof(char *));
  37   parse_argv[(parse_argc) - 1] = xbt_strdup(A_surfxml_process_function);
  38   surf_parse_get_double(&start_time, A_surfxml_process_start_time);
  39   surf_parse_get_double(&kill_time, A_surfxml_process_kill_time);
  40
  41   current_property_set = xbt_dict_new();
  42 }
  43
  44 static void parse_argument(void)
  45 {
  46   parse_argc++;
  47   parse_argv = xbt_realloc(parse_argv, (parse_argc) * sizeof(char *));
  48   parse_argv[(parse_argc) - 1] = xbt_strdup(A_surfxml_argument_value);
  49 }
  50
  51 static void parse_process_finalize(void)
  52 {
  53   smx_process_arg_t arg = NULL;
  54   void *process = NULL;
  55   if (start_time > SIMIX_get_clock()) {
  56     arg = xbt_new0(s_smx_process_arg_t, 1);
  57     arg->name = parse_argv[0];
  58     arg->code = parse_code;
  59     arg->data = NULL;
  60     arg->hostname = parse_host;
  61     arg->argc = parse_argc;
  62     arg->argv = parse_argv;
  63     arg->kill_time = kill_time;
  64     arg->properties = current_property_set;
  65
  66     DEBUG3("Process %s(%s) will be started at time %f", arg->name,
  67            arg->hostname, start_time);
  68     if (simix_global->create_process_function)
  69       surf_timer_model->extension_public->set(start_time,
  70                                                  (void *) simix_global->
  71                                                  create_process_function,
  72                                                  arg);
  73     else
  74       surf_timer_model->extension_public->set(start_time, (void *)
  75                                                  &SIMIX_process_create,
  76                                                  arg);
  77
  78   }
  79   if ((start_time < 0) || (start_time == SIMIX_get_clock())) {
  80     DEBUG2("Starting Process %s(%s) right now", parse_argv[0], parse_host);
  81
  82     if (simix_global->create_process_function)
  83       process =
  84          (*simix_global->create_process_function)(parse_argv[0], parse_code,
  85                                                 NULL, parse_host,
  86                                                 parse_argc, parse_argv, /*the props*/ current_property_set);
  87     else
  88       process =
  89           SIMIX_process_create(parse_argv[0], parse_code, NULL, parse_host,
  90                                parse_argc, parse_argv, /*the props*/ current_property_set);
  91
  92     if (kill_time > SIMIX_get_clock()) {
  93       if (simix_global->kill_process_function)
  94         surf_timer_model->extension_public->set(start_time,
  95                                                    (void *) simix_global->
  96                                                    kill_process_function,
  97                                                    arg);
  98       else
  99         surf_timer_model->extension_public->set(kill_time, (void *)
 100                                                    &SIMIX_process_kill,
 101                                                    (void *) process);
 102     }
 103     xbt_free(parse_host);
 104   }
 105 }
 106
 107 /**
 108  * \brief An application deployer.
 109  *
 110  * Creates the process described in \a file.
 111  * \param file a filename of a xml description of the application. This file
 112  * follows this DTD :
 113  *
 114  *     \include surfxml.dtd
 115  *
 116  * Here is a small example of such a platform
 117  *
 118  *     \include small_deployment.xml
 119  *
 120  */
 121 void SIMIX_launch_application(const char *file)
 122 {
 123   xbt_assert0(simix_global,
 124               "SIMIX_global_init has to be called before SIMIX_launch_application.");
 125   surf_parse_reset_parser();
 126   surfxml_add_callback(STag_surfxml_process_cb_list, parse_process_init);
 127   surfxml_add_callback(ETag_surfxml_argument_cb_list, parse_argument);
 128   surfxml_add_callback(STag_surfxml_prop_cb_list, parse_properties);
 129   surfxml_add_callback(ETag_surfxml_process_cb_list, parse_process_finalize);
 130
 131   surf_parse_open(file);
 132   xbt_assert1((!surf_parse()), "Parse error in %s", file);
 133   surf_parse_close();
 134 }
 135
 136 /**
 137  * \brief Registers a #smx_process_code_t code in a global table.
 138  *
 139  * Registers a code function in a global table.
 140  * This table is then used by #SIMIX_launch_application.
 141  * \param name the reference name of the function.
 142  * \param code the function
 143  */
 144 void SIMIX_function_register(const char *name, xbt_main_func_t code)
 145 {
 146   xbt_assert0(simix_global,
 147               "SIMIX_global_init has to be called before SIMIX_function_register.");
 148
 149   xbt_dict_set(simix_global->registered_functions, name, code, NULL);
 150 }
 151
 152 /**
 153  * \brief Gets a #smx_process_t code from the global table.
 154  *
 155  * Gets a code function from the global table. Returns NULL if there are no function registered with the name.
 156  * This table is then used by #SIMIX_launch_application.
 157  * \param name the reference name of the function.
 158  * \return The #smx_process_t or NULL.
 159  */
 160 xbt_main_func_t SIMIX_get_registered_function(const char *name)
 161 {
 162   xbt_assert0(simix_global,
 163               "SIMIX_global_init has to be called before SIMIX_get_registered_function.");
 164
 165   return xbt_dict_get_or_null(simix_global->registered_functions, name);
 166 }