1 /* Copyright (c) 2012-2015. The SimGrid Team.
2 * All rights reserved. */
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. */
7 #include <simgrid/msg.h>
9 /** @addtogroup MSG_examples
11 * - <b>Routes: trace-link-srcdst-user-variables/trace-link-srcdst-user-variables.c</b>. Instead of providing the name
12 * of the link to update one of its variable, this example shows how to provide two hosts as parameter (source and
13 * destination, as defined in the platform file). The tracing mechanism will get the route between these two hosts, if
14 * it is defined in the platform file, and update the variable of all the links of that route to the value provided.
17 //dump function to create and execute a task
18 static void create_and_execute_task (void)
20 msg_task_t task = MSG_task_create("task", 1000000, 0, NULL);
21 MSG_task_execute (task);
22 MSG_task_destroy (task);
25 static int trace_fun(int argc, char *argv[])
27 //Set initial values for the link user variables
28 //This example uses source and destination where source and destination are the name of hosts inthe platform file.
29 //The functions will set/change the value of the variable for all links in the route between source and destination.
31 //Set the Link_Capacity variable
32 TRACE_link_srcdst_variable_set("Tremblay", "Bourassa", "Link_Capacity", 12.34);
33 TRACE_link_srcdst_variable_set("Fafard", "Ginette", "Link_Capacity", 56.78);
35 //Set the Link_Utilization variable
36 TRACE_link_srcdst_variable_set("Tremblay", "Bourassa", "Link_Utilization", 1.2);
37 TRACE_link_srcdst_variable_set("Fafard", "Ginette", "Link_Utilization", 3.4);
39 //run the simulation, update my variables accordingly
40 for (int i = 0; i < 10; i++) {
41 create_and_execute_task ();
43 //Add to link user variables
44 TRACE_link_srcdst_variable_add ("Tremblay", "Bourassa", "Link_Utilization", 5.6);
45 TRACE_link_srcdst_variable_add ("Fafard", "Ginette", "Link_Utilization", 7.8);
48 for (int i = 0; i < 10; i++) {
49 create_and_execute_task ();
51 //Subtract from link user variables
52 TRACE_link_srcdst_variable_sub ("Tremblay", "Bourassa", "Link_Utilization", 3.4);
53 TRACE_link_srcdst_variable_sub ("Fafard", "Ginette", "Link_Utilization", 5.6);
59 int main(int argc, char *argv[])
61 MSG_init(&argc, argv);
62 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
63 "\tExample: %s msg_platform.xml msg_deployment.xml\n", argv[0], argv[0]);
65 MSG_create_environment(argv[1]);
67 //declaring link user variables (one without, another with a RGB color)
68 TRACE_link_variable_declare("Link_Capacity");
69 TRACE_link_variable_declare_with_color ("Link_Utilization", "0.9 0.1 0.1");
71 //register functions and launch deployment
72 MSG_function_register("master", trace_fun);
73 MSG_function_register("worker", trace_fun);
74 MSG_launch_application(argv[2]);