SimGrid  3.16
Versatile Simulation of Distributed Systems
examples/msg/trace-host-user-variables/trace-host-user-variables.c
/* Copyright (c) 2010, 2012-2016. 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 <stdio.h>
#include "simgrid/msg.h"
XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
static int trace_fun(int argc, char *argv[])
{
const char *hostname = MSG_host_get_name(MSG_host_self());
//the hostname has an empty HDD with a capacity of 100000 (bytes)
TRACE_host_variable_set(hostname, "HDD_capacity", 100000);
TRACE_host_variable_set(hostname, "HDD_utilization", 0);
for (int i = 0; i < 10; i++) {
//create and execute a task just to make the simulated time advance
msg_task_t task = MSG_task_create("task", 10000, 0, NULL);
//ADD: after the execution of this task, the HDD utilization increases by 100 (bytes)
TRACE_host_variable_add(hostname, "HDD_utilization", 100);
}
for (int i = 0; i < 10; i++) {
//create and execute a task just to make the simulated time advance
msg_task_t task = MSG_task_create("task", 10000, 0, NULL);
//SUB: after the execution of this task, the HDD utilization decreases by 100 (bytes)
TRACE_host_variable_sub(hostname, "HDD_utilization", 100);
}
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 msg_platform.xml msg_deployment.xml\n", argv[0], argv[0]);
//declaring user variables
TRACE_host_variable_declare("HDD_capacity");
TRACE_host_variable_declare("HDD_utilization");
//register functions and launch deployment
MSG_function_register("master", trace_fun);
MSG_function_register("worker", trace_fun);
//get user declared variables
unsigned int cursor;
char *variable;
if (host_variables){
XBT_INFO ("Declared host variables:");
xbt_dynar_foreach (host_variables, cursor, variable){
XBT_INFO ("%s", variable);
}
xbt_dynar_free (&host_variables);
}
if (link_variables){
XBT_INFO ("Declared link variables:");
xbt_dynar_foreach (link_variables, cursor, variable){
XBT_INFO ("%s", variable);
}
xbt_dynar_free (&link_variables);
}
//create a customized viva graph configuration file
FILE *fp = fopen ("viva_graph.plist", "w");
if (fp == NULL){
return 1;
}
fprintf (fp, "{\n node = (");
if (nodes_type){
XBT_INFO ("Node types in the trace:");
char *node_type;
xbt_dynar_foreach (nodes_type, cursor, node_type){
XBT_INFO ("%s", node_type);
fprintf (fp, "%s, ", node_type);
}
xbt_dynar_free (&nodes_type);
}
fprintf (fp, ");\n edge = (");
if (edges_type){
XBT_INFO ("Node types in the trace:");
char *edge_type;
xbt_dynar_foreach (edges_type, cursor, edge_type){
XBT_INFO ("%s", edge_type);
fprintf (fp, "%s, ", edge_type);
}
xbt_dynar_free (&edges_type);
}
fprintf (fp, ");\n");
fprintf (fp, " host = {\n type = square;\n size = HDD_capacity; \n values = (HDD_utilization);\n };\n");
fprintf (fp, " link = {\n type = rhombus;\n size = bandwidth;\n };\n");
fprintf (fp, "}\n");
fclose (fp);
return 0;
}