1 /* Copyright (c) 2007-2015. 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 XBT_LOG_NEW_DEFAULT_CATEGORY(mag_app_pingpong,"Messages specific for this msg example");
11 static int pinger(int argc, char *argv[])
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 time = 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 = time;
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_INFO("Pong -> %s", argv[1]);
41 xbt_assert(MSG_host_by_name(argv[1]) != NULL, "Unknown host %s. Stopping Now! ", argv[1]);
43 /* - Receive the (small) ping first ....*/
44 msg_task_t ping_task = NULL;
45 int a = MSG_task_receive(&ping_task, MSG_host_get_name(MSG_host_self()));
46 xbt_assert(a == MSG_OK, "Unexpected behavior");
48 double sender_time = *((double *) (ping_task->data));
49 double communication_time = MSG_get_clock() - sender_time;
50 XBT_INFO("Task received : %s", ping_task->name);
51 xbt_free(ping_task->data);
52 MSG_task_destroy(ping_task);
53 XBT_INFO(" Ping time (latency bound) %e", communication_time);
55 /* - ... Then send a 1GB pong back (bandwidth bound) */
56 double time = MSG_get_clock();
57 msg_task_t pong_task = MSG_task_create("large communication (bandwidth bound)", 0.0, 1e9, NULL);
58 pong_task->data = xbt_new(double, 1);
59 *(double *) pong_task->data = time;
60 XBT_INFO("task_bw->data = %e", *((double *) pong_task->data));
61 MSG_task_send(pong_task, argv[1]);
66 int main(int argc, char *argv[])
68 msg_error_t res = MSG_OK;
70 MSG_init(&argc, argv);
72 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
73 "\tExample: %s ../../platform/small_platform.xml app-pingpong_d.xml\n", argv[0], argv[0]);
75 MSG_create_environment(argv[1]); /* - Load the platform description */
77 MSG_function_register("pinger", pinger); /* - Register the function to be executed by the processes */
78 MSG_function_register("ponger", ponger);
80 MSG_launch_application(argv[2]); /* - Deploy the application */
82 res = MSG_main(); /* - Run the simulation */
84 XBT_INFO("Total simulation time: %e", MSG_get_clock());