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