1 /* Copyright (c) 2010-2015. 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(msg_test, "Messages specific for this msg example");
11 /** @addtogroup MSG_examples
13 * - <b>app-masterworker/app-masterworker.c: Master/workers example</b>. This good old example is also very simple. Its
14 * basic version is fully commented on this page: \ref MSG_ex_master_worker.
17 static int master(int argc, char *argv[])
19 long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s");
20 double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s");
21 double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
22 long workers_count = xbt_str_parse_int(argv[4], "Invalid amount of workers: %s");
26 XBT_INFO("Got %ld workers and %ld tasks to process", workers_count, number_of_tasks);
28 for (i = 0; i < number_of_tasks; i++) {
30 char sprintf_buffer[256];
31 msg_task_t task = NULL;
33 sprintf(mailbox, "worker-%ld", i % workers_count);
34 sprintf(sprintf_buffer, "Task_%d", i);
35 task = MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size, NULL);
36 if (number_of_tasks < 10000 || i % 10000 == 0)
37 XBT_INFO("Sending \"%s\" (of %ld) to mailbox \"%s\"", task->name, number_of_tasks, mailbox);
39 MSG_task_send(task, mailbox);
42 XBT_INFO("All tasks have been dispatched. Let's tell everybody the computation is over.");
43 for (i = 0; i < workers_count; i++) {
46 sprintf(mailbox, "worker-%ld", i % workers_count);
47 msg_task_t finalize = MSG_task_create("finalize", 0, 0, 0);
48 MSG_task_send(finalize, mailbox);
54 static int worker(int argc, char *argv[])
56 msg_task_t task = NULL;
59 long id= xbt_str_parse_int(argv[1], "Invalid argument %s");
61 sprintf(mailbox, "worker-%ld", id);
64 int res = MSG_task_receive(&(task), mailbox);
65 xbt_assert(res == MSG_OK, "MSG_task_get failed");
67 // XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
68 if (!strcmp(MSG_task_get_name(task), "finalize")) {
69 MSG_task_destroy(task);
72 // XBT_INFO("Processing \"%s\"", MSG_task_get_name(task));
73 MSG_task_execute(task);
74 // XBT_INFO("\"%s\" done", MSG_task_get_name(task));
75 MSG_task_destroy(task);
78 XBT_INFO("I'm done. See you!");
82 int main(int argc, char *argv[])
84 MSG_init(&argc, argv);
85 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
86 "\tExample: %s msg_platform.xml msg_deployment.xml\n", argv[0], argv[0]);
88 MSG_create_environment(argv[1]);
90 MSG_function_register("master", master);
91 MSG_function_register("worker", worker);
92 MSG_launch_application(argv[2]);
94 msg_error_t res = MSG_main();
96 XBT_INFO("Simulation time %g", MSG_get_clock());