--- /dev/null
+/* Copyright (c) 2010, 2012-2015. 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. */
+
+/** @addtogroup MSG_examples
+ *
+ * - <b>tracing/user_variables.c</b>: This program demonstrates how to trace user variables associated to the hosts of
+ * the platform file. You might want to run this program with the following parameters:
+ * --cfg=tracing:yes
+ * --cfg=tracing/platform:yes
+ * (See \ref tracing_tracing_options for details)
+ */
+#include <stdio.h>
+#include "simgrid/msg.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
+
+static int master(int argc, char *argv[])
+{
+ const char *hostname = MSG_host_get_name(MSG_host_self());
+ int i;
+
+ //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 (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);
+ MSG_task_execute (task);
+ MSG_task_destroy (task);
+
+ //ADD: after the execution of this task, the HDD utilization increases by 100 (bytes)
+ TRACE_host_variable_add(hostname, "HDD_utilization", 100);
+ }
+
+ for (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);
+ MSG_task_execute (task);
+ MSG_task_destroy (task);
+
+ //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]);
+
+ MSG_create_environment(argv[1]);
+
+ //declaring user variables
+ TRACE_host_variable_declare("HDD_capacity");
+ TRACE_host_variable_declare("HDD_utilization");
+
+ //register functions and launch deployment
+ MSG_function_register("master", master);
+ MSG_function_register("slave", master);
+ MSG_launch_application(argv[2]);
+
+ MSG_main();
+
+ //get user declared variables
+ unsigned int cursor;
+ char *variable;
+ xbt_dynar_t host_variables = TRACE_get_host_variables ();
+ if (host_variables){
+ XBT_INFO ("Declared host variables:");
+ xbt_dynar_foreach (host_variables, cursor, variable){
+ XBT_INFO ("%s", variable);
+ }
+ xbt_dynar_free (&host_variables);
+ }
+ xbt_dynar_t link_variables = TRACE_get_link_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;
+ fp = fopen ("viva_graph.plist", "w");
+ if (!fp){
+ return 1;
+ }
+ fprintf (fp, "{\n node = (");
+ xbt_dynar_t nodes_type = TRACE_get_node_types ();
+ 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 = (");
+ xbt_dynar_t edges_type = TRACE_get_edge_types ();
+ 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;
+}
