1 /* Copyright (c) 2007-2020. 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_test, "Messages specific for this msg example");
12 #define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */
14 static void task_cleanup_handler(void* task)
16 MSG_task_destroy(task);
19 static int master(int argc, char *argv[])
21 xbt_assert(argc == 5);
22 long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s");
23 double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s");
24 double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
25 long workers_count = xbt_str_parse_int(argv[4], "Invalid amount of workers: %s");
27 XBT_INFO("Got %ld workers and %ld tasks to process", workers_count, number_of_tasks);
29 for (int i = 0; i < number_of_tasks; i++) {
31 snprintf(mailbox, 255, "worker-%ld", i % workers_count);
32 XBT_INFO("Send a message to %s", mailbox);
33 msg_task_t task = MSG_task_create("Task", task_comp_size, task_comm_size, NULL);
35 switch ( MSG_task_send_with_timeout(task,mailbox,10.0) ) {
37 XBT_INFO("Send to %s completed", mailbox);
40 case MSG_TRANSFER_FAILURE:
41 XBT_INFO("Mmh. The communication with '%s' failed. Nevermind. Let's keep going!", mailbox);
42 MSG_task_destroy(task);
46 XBT_INFO ("Mmh. Got timeouted while speaking to '%s'. Nevermind. Let's keep going!", mailbox);
47 MSG_task_destroy(task);
51 xbt_die( "Unexpected behavior");
55 XBT_INFO("All tasks have been dispatched. Let's tell everybody the computation is over.");
56 for (int i = 0; i < workers_count; i++) {
58 snprintf(mailbox, 255, "worker-%ld", i % workers_count);
59 msg_task_t task = MSG_task_create("finalize", 0, 0, FINALIZE);
61 switch (MSG_task_send_with_timeout(task,mailbox,1.0)) {
63 case MSG_TRANSFER_FAILURE:
64 XBT_INFO("Mmh. Can't reach '%s'! Nevermind. Let's keep going!", mailbox);
65 MSG_task_destroy(task);
69 XBT_INFO("Mmh. Got timeouted while speaking to '%s'. Nevermind. Let's keep going!", mailbox);
70 MSG_task_destroy(task);
78 xbt_die("Unexpected behavior with '%s'", mailbox);
82 XBT_INFO("Goodbye now!");
86 static int worker(int argc, char *argv[])
88 xbt_assert(argc == 2);
91 long id= xbt_str_parse_int(argv[1], "Invalid argument %s");
93 snprintf(mailbox, 79,"worker-%ld", id);
96 msg_task_t task = NULL;
97 XBT_INFO("Waiting a message on %s", mailbox);
98 int retcode = MSG_task_receive( &(task), mailbox);
99 if (retcode == MSG_OK) {
100 if (MSG_task_get_data(task) == FINALIZE) {
101 MSG_task_destroy(task);
104 XBT_INFO("Start execution...");
105 MSG_process_set_data(MSG_process_self(), task);
106 retcode = MSG_task_execute(task);
107 MSG_process_set_data(MSG_process_self(), NULL);
108 if (retcode == MSG_OK) {
109 XBT_INFO("Execution complete.");
110 MSG_task_destroy(task);
112 XBT_INFO("Hey ?! What's up ? ");
113 xbt_die("Unexpected behavior");
115 } else if (retcode == MSG_TRANSFER_FAILURE) {
116 XBT_INFO("Mmh. Something went wrong. Nevermind. Let's keep going!");
118 xbt_die("Unexpected behavior");
121 XBT_INFO("I'm done. See you!");
125 int main(int argc, char *argv[])
127 MSG_init(&argc, argv);
128 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
129 "\tExample: %s msg_platform.xml msg_deployment.xml\n", argv[0], argv[0]);
131 MSG_create_environment(argv[1]);
133 MSG_function_register("master", master);
134 MSG_function_register("worker", worker);
135 MSG_process_set_data_cleanup(task_cleanup_handler);
136 MSG_launch_application(argv[2]);
138 msg_error_t res = MSG_main();
140 XBT_INFO("Simulation time %g", MSG_get_clock());
142 return res != MSG_OK;