SimGrid  3.16
Versatile Simulation of Distributed Systems
examples/msg/network-ns3/network-ns3.c
/* Copyright (c) 2007-2016. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "simgrid/msg.h"
XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
int timer_start; //set as 1 in the master process
//keep a pointer to all surf running tasks.
#define NTASKS 1500
double start_time, end_time, elapsed_time;
double gl_data_size[NTASKS];
msg_task_t gl_task_array[NTASKS];
const char *workernames[NTASKS];
const char *masternames[NTASKS];
int gl_task_array_id = 0;
int count_finished = 0;
#define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */
static int master(int argc, char *argv[])
{
msg_task_t todo;
xbt_assert(argc==4,"Strange number of arguments expected 3 got %d", argc - 1);
XBT_DEBUG ("Master started");
/* data size */
double task_comm_size = xbt_str_parse_double(argv[1], "Invalid task communication size: %s");
/* worker name */
char *workername = argv[2];
int id = xbt_str_parse_int(argv[3], "Invalid ID as argument 3: %s"); //unique id to control statistics
char *id_alias = xbt_malloc(20*sizeof(char));
snprintf(id_alias, 20, "flow_%d", id);
workernames[id] = workername;
TRACE_category(id_alias);
masternames[id] = MSG_host_get_name(MSG_host_self());
{ /* Task creation. */
todo = MSG_task_create("Task_0", 100*task_comm_size, task_comm_size, NULL);
MSG_task_set_category(todo, id_alias);
//keep track of running tasks
gl_task_array[id] = todo;
gl_data_size[id] = task_comm_size;
}
MSG_host_by_name(workername);
count_finished++;
timer_start = 1 ;
/* time measurement */
snprintf(id_alias,20,"%d", id);
start_time = MSG_get_clock();
MSG_task_send(todo, id_alias);
end_time = MSG_get_clock();
XBT_DEBUG ("Finished");
xbt_free(id_alias);
return 0;
}
static int timer(int argc, char *argv[])
{
double sleep_time;
double first_sleep;
xbt_assert(argc==3,"Strange number of arguments expected 2 got %d", argc - 1);
sscanf(argv[1], "%lf", &first_sleep);
sscanf(argv[2], "%lf", &sleep_time);
XBT_DEBUG ("Timer started");
if(first_sleep){
MSG_process_sleep(first_sleep);
}
do {
XBT_DEBUG ("Get sleep");
MSG_process_sleep(sleep_time);
} while(timer_start);
XBT_DEBUG ("Finished");
return 0;
}
static int worker(int argc, char *argv[])
{
msg_task_t task = NULL;
char id_alias[10];
xbt_assert(argc==2,"Strange number of arguments expected 1 got %d", argc - 1);
XBT_DEBUG ("Worker started");
int id = xbt_str_parse_int(argv[1], "Invalid id: %s");
snprintf(id_alias,10, "%d", id);
msg_error_t a = MSG_task_receive(&(task), id_alias);
count_finished--;
if(count_finished == 0){
timer_start = 0;
}
xbt_assert(a == MSG_OK,"Hey?! What's up? Unexpected behavior");
elapsed_time = MSG_get_clock() - start_time;
XBT_INFO("FLOW[%d] : Receive %.0f bytes from %s to %s", id, MSG_task_get_bytes_amount(task), masternames[id],
workernames[id]);
// MSG_task_execute(task);
XBT_DEBUG ("Finished");
return 0;
}
int main(int argc, char *argv[])
{
MSG_init(&argc, argv);
xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
"\tExample: %s platform.xml deployment.xml\n", argv[0], argv[0]);
TRACE_declare_mark("endmark");
MSG_function_register("master", master);
MSG_function_register("worker", worker);
MSG_function_register("timer", timer);
return res != MSG_OK;
}