1 /* Copyright (c) 2007-2019. 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)
17 MSG_task_destroy(task);
20 static int master(int argc, char *argv[])
22 xbt_assert(argc == 5);
23 long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s");
24 double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s");
25 double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
26 long workers_count = xbt_str_parse_int(argv[4], "Invalid amount of workers: %s");
28 XBT_INFO("Got %ld workers and %ld tasks to process", workers_count, number_of_tasks);
30 for (int i = 0; i < number_of_tasks; i++) {
32 snprintf(mailbox, 255, "worker-%ld", i % workers_count);
33 XBT_INFO("Send a message to %s", mailbox);
34 msg_task_t task = MSG_task_create("Task", task_comp_size, task_comm_size, NULL);
36 switch ( MSG_task_send_with_timeout(task,mailbox,10.0) ) {
38 XBT_INFO("Send to %s completed", mailbox);
41 case MSG_TRANSFER_FAILURE:
42 XBT_INFO("Mmh. The communication with '%s' failed. Nevermind. Let's keep going!", mailbox);
43 MSG_task_destroy(task);
47 XBT_INFO ("Mmh. Got timeouted while speaking to '%s'. Nevermind. Let's keep going!", mailbox);
48 MSG_task_destroy(task);
52 xbt_die( "Unexpected behavior");
56 XBT_INFO("All tasks have been dispatched. Let's tell everybody the computation is over.");
57 for (int i = 0; i < workers_count; i++) {
59 snprintf(mailbox, 255, "worker-%ld", i % workers_count);
60 msg_task_t task = MSG_task_create("finalize", 0, 0, FINALIZE);
62 switch (MSG_task_send_with_timeout(task,mailbox,1.0)) {
64 case MSG_TRANSFER_FAILURE:
65 XBT_INFO("Mmh. Can't reach '%s'! Nevermind. Let's keep going!", mailbox);
66 MSG_task_destroy(task);
70 XBT_INFO("Mmh. Got timeouted while speaking to '%s'. Nevermind. Let's keep going!", mailbox);
71 MSG_task_destroy(task);
79 xbt_die("Unexpected behavior with '%s'", mailbox);
83 XBT_INFO("Goodbye now!");
87 static int worker(int argc, char *argv[])
89 xbt_assert(argc == 2);
92 long id= xbt_str_parse_int(argv[1], "Invalid argument %s");
94 snprintf(mailbox, 79,"worker-%ld", id);
97 msg_task_t task = NULL;
98 XBT_INFO("Waiting a message on %s", mailbox);
99 int retcode = MSG_task_receive( &(task), mailbox);
100 if (retcode == MSG_OK) {
101 if (MSG_task_get_data(task) == FINALIZE) {
102 MSG_task_destroy(task);
105 XBT_INFO("Start execution...");
106 MSG_process_set_data(MSG_process_self(), task);
107 retcode = MSG_task_execute(task);
108 MSG_process_set_data(MSG_process_self(), NULL);
109 if (retcode == MSG_OK) {
110 XBT_INFO("Execution complete.");
111 MSG_task_destroy(task);
113 XBT_INFO("Hey ?! What's up ? ");
114 xbt_die("Unexpected behavior");
116 } else if (retcode == MSG_TRANSFER_FAILURE) {
117 XBT_INFO("Mmh. Something went wrong. Nevermind. Let's keep going!");
119 xbt_die("Unexpected behavior");
122 XBT_INFO("I'm done. See you!");
126 int main(int argc, char *argv[])
128 MSG_init(&argc, argv);
129 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
130 "\tExample: %s msg_platform.xml msg_deployment.xml\n", argv[0], argv[0]);
132 MSG_create_environment(argv[1]);
134 MSG_function_register("master", master);
135 MSG_function_register("worker", worker);
136 MSG_process_set_data_cleanup(task_cleanup_handler);
137 MSG_launch_application(argv[2]);
139 msg_error_t res = MSG_main();
141 XBT_INFO("Simulation time %g", MSG_get_clock());
143 return res != MSG_OK;