1 /* Copyright (c) 2007-2016. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "simgrid/msg.h"
8 XBT_LOG_NEW_DEFAULT_CATEGORY(mag_app_pingpong,"Messages specific for this msg example");
10 static int pinger(int argc, char *argv[])
12 xbt_assert(argc==2, "The pinger function one argument from the XML deployment file");
13 XBT_INFO("Ping -> %s", argv[1]);
14 xbt_assert(MSG_host_by_name(argv[1]) != NULL, "Unknown host %s. Stopping Now! ", argv[1]);
16 /* - Do the ping with a 1-Byte task (latency bound) ... */
17 double now = MSG_get_clock();
18 msg_task_t ping_task = MSG_task_create("small communication (latency bound)", 0.0, 1, NULL);
19 ping_task->data = xbt_new(double, 1);
20 *(double *) ping_task->data = now;
21 MSG_task_send(ping_task, argv[1]);
23 /* - ... then wait for the (large) pong */
24 msg_task_t pong_task = NULL;
25 int a = MSG_task_receive(&pong_task,MSG_host_get_name(MSG_host_self()));
26 xbt_assert(a == MSG_OK, "Unexpected behavior");
28 double sender_time = *((double *) (pong_task->data));
29 double communication_time = MSG_get_clock() - sender_time;
30 XBT_INFO("Task received : %s", pong_task->name);
31 xbt_free(pong_task->data);
32 MSG_task_destroy(pong_task);
33 XBT_INFO("Pong time (bandwidth bound): %e", communication_time);
38 static int ponger(int argc, char *argv[])
40 xbt_assert(argc==2, "The ponger function one argument from the XML deployment file");
41 XBT_INFO("Pong -> %s", argv[1]);
42 xbt_assert(MSG_host_by_name(argv[1]) != NULL, "Unknown host %s. Stopping Now! ", argv[1]);
44 /* - Receive the (small) ping first ....*/
45 msg_task_t ping_task = NULL;
46 int a = MSG_task_receive(&ping_task, MSG_host_get_name(MSG_host_self()));
47 xbt_assert(a == MSG_OK, "Unexpected behavior");
49 double sender_time = *((double *) (ping_task->data));
50 double communication_time = MSG_get_clock() - sender_time;
51 XBT_INFO("Task received : %s", ping_task->name);
52 xbt_free(ping_task->data);
53 MSG_task_destroy(ping_task);
54 XBT_INFO(" Ping time (latency bound) %e", communication_time);
56 /* - ... Then send a 1GB pong back (bandwidth bound) */
57 double now = MSG_get_clock();
58 msg_task_t pong_task = MSG_task_create("large communication (bandwidth bound)", 0.0, 1e9, NULL);
59 pong_task->data = xbt_new(double, 1);
60 *(double *) pong_task->data = now;
61 XBT_INFO("task_bw->data = %e", *((double *) pong_task->data));
62 MSG_task_send(pong_task, argv[1]);
67 int main(int argc, char *argv[])
69 MSG_init(&argc, argv);
71 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
72 "\tExample: %s ../../platform/small_platform.xml app-pingpong_d.xml\n", argv[0], argv[0]);
74 MSG_create_environment(argv[1]); /* - Load the platform description */
76 MSG_function_register("pinger", pinger); /* - Register the functions to be executed by the processes */
77 MSG_function_register("ponger", ponger);
79 MSG_launch_application(argv[2]); /* - Deploy the application */
81 msg_error_t res = MSG_main(); /* - Run the simulation */
83 XBT_INFO("Total simulation time: %e", MSG_get_clock());