examples/msg/alias/masterslave_forwarder_with_alias.c

   1 /* Copyright (c) 2008, 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 <stdio.h>
   8 #include "msg/msg.h" /* Yeah! If you want to use msg, you need to include msg/msg.h */
   9 #include "xbt/sysdep.h" /* calloc, printf */
  10
  11 /* Create a log channel to have nice outputs. */
  12 #include "xbt/log.h"
  13 #include "xbt/asserts.h"
  14 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test,"Messages specific for this msg example");
  15
  16
  17 typedef enum {
  18   PORT_22 = 0,
  19   MAX_CHANNEL
  20 } channel_t;
  21
  22 int master(int argc, char *argv[]);
  23 int slave(int argc, char *argv[]);
  24 int forwarder(int argc, char *argv[]);
  25 MSG_error_t test_all(const char *platform_file, const char *application_file);
  26
  27
  28 #define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */
  29
  30 /** Emitter function  */
  31 int master(int argc, char *argv[])
  32 {
  33         int alias_count = 0;
  34         char** aliases = NULL;
  35         m_task_t *todo = NULL;
  36         int number_of_tasks = 0;
  37         double task_comp_size = 0;
  38         double task_comm_size = 0;
  39
  40
  41         int i;
  42
  43         xbt_assert1(sscanf(argv[1],"%d", &number_of_tasks),"Invalid argument %s\n",argv[1]);
  44         xbt_assert1(sscanf(argv[2],"%lg", &task_comp_size),"Invalid argument %s\n",argv[2]);
  45         xbt_assert1(sscanf(argv[3],"%lg", &task_comm_size),"Invalid argument %s\n",argv[3]);
  46
  47         {
  48                 /*  Task creation */
  49                 char sprintf_buffer[64];
  50
  51                 todo = xbt_new0(m_task_t,number_of_tasks);
  52
  53                 for (i = 0; i < number_of_tasks; i++)
  54                 {
  55                         sprintf(sprintf_buffer, "Task_%d", i);
  56                         todo[i] = MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size, NULL);
  57                 }
  58         }
  59
  60         {
  61                 /* Process organisation */
  62                 alias_count = argc - 4;
  63                 aliases = xbt_new0(char*,alias_count);
  64
  65                 for(i = 4; i < argc; i++)
  66                 {
  67                         aliases[i-4] = strdup(argv[i]);
  68                 }
  69         }
  70
  71         INFO2("Got %d aliases and %d tasks to process", alias_count,number_of_tasks);
  72
  73         for (i = 0; i < alias_count; i++)
  74                 DEBUG1("%s", aliases[i]);
  75
  76         for (i = 0; i < number_of_tasks; i++)
  77         {
  78                 INFO2("Sending \"%s\" to \"%s\"",todo[i]->name,aliases[i % alias_count]);
  79
  80                 if(!strcmp(MSG_host_get_name(MSG_host_self()), aliases[i % alias_count]))
  81                 {
  82                         INFO0("Hey ! It's me ! :)");
  83                 }
  84
  85                 MSG_task_send(todo[i], aliases[i % alias_count]);
  86                 INFO0("Sent");
  87         }
  88
  89         INFO0("All tasks have been dispatched. Let's tell everybody the computation is over.");
  90
  91         for (i = 0; i < alias_count; i++)
  92                 MSG_task_send(MSG_task_create("finalize", 0, 0, FINALIZE),aliases[i]);
  93
  94         INFO0("Goodbye now!");
  95
  96         for(i = 0; i < alias_count; i++)
  97                 free(aliases[i]);
  98
  99         free(aliases);
 100         free(todo);
 101         return 0;
 102 } /* end_of_master */
 103
 104 /** Receiver function  */
 105 int slave(int argc, char *argv[])
 106 {
 107         m_task_t task = NULL;
 108         int res;
 109
 110         while(1)
 111         {
 112                 res = MSG_task_receive(&(task), MSG_host_get_name(MSG_host_self()));
 113                 xbt_assert0(res == MSG_OK, "MSG_task_receive failed");
 114
 115                 INFO1("Received \"%s\"", MSG_task_get_name(task));
 116
 117                 if (!strcmp(MSG_task_get_name(task),"finalize"))
 118                 {
 119                         MSG_task_destroy(task);
 120                         break;
 121                 }
 122
 123                 INFO1("Processing \"%s\"", MSG_task_get_name(task));
 124                 MSG_task_execute(task);
 125                 INFO1("\"%s\" done", MSG_task_get_name(task));
 126                 MSG_task_destroy(task);
 127                 task = NULL;
 128         }
 129
 130         INFO0("I'm done. See you!");
 131         return 0;
 132 } /* end_of_slave */
 133
 134 /** Forwarder function */
 135 int forwarder(int argc, char *argv[])
 136 {
 137         int i;
 138         int alias_count;
 139         char** aliases;
 140
 141         {                  /* Process organisation */
 142                 alias_count = argc - 1;
 143                 aliases = xbt_new0(char*,alias_count);
 144
 145                 for (i = 1; i < argc; i++)
 146                         aliases[i-1] =strdup(argv[i]);
 147         }
 148
 149         i=0;
 150
 151         while(1)
 152         {
 153                 m_task_t task = NULL;
 154                 int a;
 155
 156                 a = MSG_task_receive(&(task),MSG_host_get_name(MSG_host_self()));
 157
 158                 if (a == MSG_OK)
 159                 {
 160                         INFO1("Received \"%s\"", MSG_task_get_name(task));
 161
 162                         if(MSG_task_get_data(task)==FINALIZE)
 163                         {
 164                                 INFO0("All tasks have been dispatched. Let's tell everybody the computation is over.");
 165
 166                                 for (i = 0; i < alias_count; i++)
 167                                         MSG_task_send(MSG_task_create("finalize", 0, 0, FINALIZE),aliases[i]);
 168
 169                                 MSG_task_destroy(task);
 170                                 break;
 171                         }
 172
 173                         INFO2("Sending \"%s\" to \"%s\"",MSG_task_get_name(task),aliases[i% alias_count]);
 174                         MSG_task_send(task, aliases[i % alias_count]);
 175                         i++;
 176                 }
 177                 else
 178                 {
 179                         INFO0("Hey ?! What's up ? ");
 180                         xbt_assert0(0,"Unexpected behavior");
 181                 }
 182         }
 183
 184         for(i = 0; i < alias_count; i++)
 185                 free(aliases[i]);
 186
 187         INFO0("I'm done. See you!");
 188         return 0;
 189
 190 } /* end_of_forwarder */
 191
 192 /** Test function */
 193 MSG_error_t test_all(const char *platform_file,const char *application_file)
 194 {
 195         MSG_error_t res = MSG_OK;
 196
 197         {       /*  Simulation setting */
 198                 MSG_set_channel_number(MAX_CHANNEL);
 199                 MSG_paje_output("msg_test.trace");
 200                 MSG_create_environment(platform_file);
 201         }
 202
 203         {
 204                 /*   Application deployment */
 205                 MSG_function_register("master", master);
 206                 MSG_function_register("slave", slave);
 207                 MSG_function_register("forwarder", forwarder);
 208                 MSG_launch_application(application_file);
 209         }
 210
 211         res = MSG_main();
 212
 213         INFO1("Simulation time %g",MSG_get_clock());
 214         return res;
 215 } /* end_of_test_all */
 216
 217
 218 /** Main function */
 219 int main(int argc, char *argv[])
 220 {
 221         MSG_error_t res = MSG_OK;
 222
 223         MSG_global_init(&argc,argv);
 224
 225         if (argc < 3)
 226         {
 227                 printf ("Usage: %s platform_file deployment_file\n",argv[0]);
 228                 printf ("example: %s msg_platform.xml msg_deployment.xml\n",argv[0]);
 229                 exit(1);
 230         }
 231
 232         res = test_all(argv[1],argv[2]);
 233         MSG_clean();
 234
 235         if(res==MSG_OK)
 236                 return 0;
 237         else
 238                 return 1;
 239 } /* end_of_main */