1 /* Copyright (c) 2010-2018. 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 #include <stdio.h> /* snprintf */
10 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_async_wait, "Messages specific for this msg example");
12 /* Main function of the Sender process */
13 static int sender(int argc, char* argv[])
15 xbt_assert(argc == 7, "The sender function expects 6 arguments from the XML deployment file");
16 long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s"); /* - number of tasks */
17 double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s"); /* - computational cost */
18 double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s"); /* - communication cost */
19 long receivers_count = xbt_str_parse_int(argv[4], "Invalid amount of receivers: %s"); /* - number of receivers */
20 double sleep_start_time = xbt_str_parse_double(argv[5], "Invalid sleep start time: %s"); /* - start time */
21 double sleep_test_time = xbt_str_parse_double(argv[6], "Invalid test time: %s"); /* - test time */
23 XBT_INFO("sleep_start_time : %f , sleep_test_time : %f", sleep_start_time, sleep_test_time);
25 MSG_process_sleep(sleep_start_time);
26 for (int i = 0; i < number_of_tasks; i++) {
30 snprintf(mailbox, 79, "receiver-%ld", i % receivers_count);
31 snprintf(taskname, 79, "Task_%d", i);
33 /* This process first creates a task and send it asynchronously with @ref MSG_task_isend. Then, if: */
34 msg_task_t task = MSG_task_create(taskname, task_comp_size, task_comm_size, NULL);
35 msg_comm_t comm = MSG_task_isend(task, mailbox);
36 XBT_INFO("Send to receiver-%ld Task_%d", i % receivers_count, i);
38 if (sleep_test_time > 0) { /* - "test_time" is set to 0, wait on @ref MSG_comm_wait */
39 while (MSG_comm_test(comm) == 0) { /* - Call @ref MSG_comm_test every "test_time" otherwise */
40 MSG_process_sleep(sleep_test_time);
43 MSG_comm_wait(comm, -1);
45 MSG_comm_destroy(comm);
48 for (int i = 0; i < receivers_count; i++) {
50 snprintf(mailbox, 79, "receiver-%d", i);
51 msg_task_t task = MSG_task_create("finalize", 0, 0, 0);
52 msg_comm_t comm = MSG_task_isend(task, mailbox);
53 XBT_INFO("Send to receiver-%d finalize", i);
54 if (sleep_test_time > 0) {
55 while (MSG_comm_test(comm) == 0) {
56 MSG_process_sleep(sleep_test_time);
59 MSG_comm_wait(comm, -1);
61 MSG_comm_destroy(comm);
64 XBT_INFO("Goodbye now!");
68 /* Receiver process expects 3 arguments: */
69 static int receiver(int argc, char* argv[])
71 xbt_assert(argc == 4, "The relay_runner function does not accept any parameter from the XML deployment file");
72 int id = xbt_str_parse_int(argv[1], "Invalid id: %s"); /* - unique id */
73 double sleep_start_time = xbt_str_parse_double(argv[2], "Invalid sleep start parameter: %s"); /* - start time */
74 double sleep_test_time = xbt_str_parse_double(argv[3], "Invalid sleep test parameter: %s"); /* - test time */
75 XBT_INFO("sleep_start_time : %f , sleep_test_time : %f", sleep_start_time, sleep_test_time);
77 MSG_process_sleep(sleep_start_time); /* This process first sleeps for "start time" seconds. */
80 snprintf(mailbox, 79, "receiver-%d", id);
82 msg_task_t task = NULL;
83 msg_comm_t comm = MSG_task_irecv(&task, mailbox); /* Then it posts asynchronous receives (@ref MSG_task_irecv) and*/
84 XBT_INFO("Wait to receive a task");
86 if (sleep_test_time > 0) { /* - if "test_time" is set to 0, wait on @ref MSG_comm_wait */
87 while (MSG_comm_test(comm) == 0) { /* - Call @ref MSG_comm_test every "test_time" otherwise */
88 MSG_process_sleep(sleep_test_time);
91 msg_error_t res = MSG_comm_wait(comm, -1);
92 xbt_assert(res == MSG_OK, "MSG_task_get failed");
94 MSG_comm_destroy(comm);
96 XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
97 if (strcmp(MSG_task_get_name(task), "finalize") == 0) { /* If the received task is "finalize", the process ends */
98 MSG_task_destroy(task);
102 XBT_INFO("Processing \"%s\"", MSG_task_get_name(task)); /* Otherwise, the task is processed */
103 MSG_task_execute(task);
104 XBT_INFO("\"%s\" done", MSG_task_get_name(task));
105 MSG_task_destroy(task);
107 XBT_INFO("I'm done. See you!");
111 int main(int argc, char* argv[])
113 MSG_init(&argc, argv);
114 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
115 "\tExample: %s msg_platform.xml msg_deployment.xml\n",
118 MSG_create_environment(argv[1]); /* - Load the platform description */
120 MSG_function_register("sender", sender);
121 MSG_function_register("receiver", receiver);
122 MSG_launch_application(argv[2]); /* - Deploy the sender and receiver processes */
124 msg_error_t res = MSG_main(); /* - Run the simulation */
126 XBT_INFO("Simulation time %g", MSG_get_clock());
128 return res != MSG_OK;