+++ /dev/null
-/* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "simgrid/msg.h"
-
-#include <stdio.h> /* sprintf */
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
-
-#define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */
-
-static char* build_channel_name(char* buffer, const char* sender, const char* receiver)
-{
- strcpy(buffer, sender);
- strcat(buffer, ":");
- strcat(buffer, receiver);
- return buffer;
-}
-
-/* forward definitions */
-static int master(int argc, char* argv[]);
-static int worker(int argc, char* argv[]);
-
-static int master(int argc, char* argv[])
-{
- msg_host_t host_self = MSG_host_self();
- char* master_name = (char*)MSG_host_get_name(host_self);
- char channel[1024];
-
- TRACE_category(master_name);
-
- double timeout = xbt_str_parse_double(argv[1], "Invalid timeout: %s"); /** - timeout */
- double comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s"); /** - Task compute cost */
- double comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s"); /** - Task communication size */
-
- /* Get the info about the worker processes */
- int worker_count = MSG_get_host_number();
- msg_host_t* workers = xbt_dynar_to_array(MSG_hosts_as_dynar());
-
- for (int i = 0; i < worker_count; i++) // Remove my host from the list
- if (host_self == workers[i]) {
- workers[i] = workers[worker_count - 1];
- worker_count--;
- break;
- }
-
- for (int i = 0; i < worker_count; i++)
- MSG_process_create("worker", worker, (void*)master_name, workers[i]);
- XBT_INFO("Got %d workers and will send tasks for %g seconds", worker_count, timeout);
-
- /* Dispatch the tasks */
- int task_num = 0;
- while (MSG_get_clock() < timeout) {
-
- /* Retrieve the next incomming request */
- XBT_DEBUG("Retrieve the next incomming request on %s", master_name);
- msg_task_t request = NULL;
- int res = MSG_task_receive(&(request), master_name);
- xbt_assert(res == MSG_OK, "MSG_task_receive failed");
- msg_host_t requester = MSG_task_get_data(request);
- MSG_task_destroy(request);
-
- /* Prepare the task to be sent */
- char sprintf_buffer[64];
- sprintf(sprintf_buffer, "Task_%d", task_num);
- msg_task_t task = MSG_task_create(sprintf_buffer, comp_size, comm_size, NULL);
- MSG_task_set_category(task, master_name);
-
- /* Send this out */
- build_channel_name(channel, master_name, MSG_host_get_name(requester));
-
- XBT_DEBUG("Sending '%s' to channel '%s'", task->name, channel);
- MSG_task_send(task, channel);
- XBT_DEBUG("Sent");
- task_num++;
- }
-
- XBT_DEBUG("Time is up. Let's tell everybody the computation is over.");
- for (int i = 0; i < worker_count; i++) { /* We don't write in order, but the total amount is right */
-
- /* Don't write to a worker that did not request for work, or it will deadlock: both would be sending something */
- msg_task_t request = NULL;
- int res = MSG_task_receive(&(request), master_name);
- xbt_assert(res == MSG_OK, "MSG_task_receive failed");
- msg_host_t requester = MSG_task_get_data(request);
- MSG_task_destroy(request);
-
- XBT_DEBUG("Stop worker %s", MSG_host_get_name(requester));
- msg_task_t finalize = MSG_task_create("finalize", 0, 0, FINALIZE);
- MSG_task_send(finalize, build_channel_name(channel, master_name, MSG_host_get_name(requester)));
- }
-
- XBT_INFO("Sent %d tasks in total!", task_num);
- free(workers);
- return 0;
-}
-
-/** Worker function */
-static int worker(int argc, char* argv[])
-{
- char channel[1024];
-
- const char* my_master = MSG_process_get_data(MSG_process_self());
- build_channel_name(channel, my_master, MSG_host_get_name(MSG_host_self()));
-
- XBT_DEBUG("Receiving on channel \"%s\"", channel);
-
- while (1) {
- /* Send a request */
- XBT_DEBUG("Sent a request to my master on %s", my_master);
- msg_task_t request = MSG_task_create("request", 0, 0, MSG_host_self());
- MSG_task_send(request, my_master);
-
- /* Wait for the answer */
- msg_task_t task = NULL;
- int res = MSG_task_receive(&(task), channel);
- xbt_assert(res == MSG_OK, "MSG_task_receive failed");
-
- XBT_DEBUG("Received '%s'", MSG_task_get_name(task));
- if (!strcmp(MSG_task_get_name(task), "finalize")) {
- MSG_task_destroy(task);
- break;
- }
-
- XBT_DEBUG("Processing '%s'", MSG_task_get_name(task));
- MSG_task_execute(task);
- XBT_DEBUG("'%s' done", MSG_task_get_name(task));
- MSG_task_destroy(task);
- }
- XBT_DEBUG("I'm done. See you!");
- return 0;
-}
-
-/** Main function */
-int main(int argc, char* argv[])
-{
- MSG_init(&argc, argv);
- xbt_assert(argc > 2,
- "Usage: %s platform_file deployment_file\n"
- "\tExample: %s msg_platform.xml msg_deployment.xml\n",
- argv[0], argv[0]);
-
- /* Create a simulated platform */
- MSG_create_environment(argv[1]);
-
- /* Application deployment */
- MSG_function_register("master", master);
- MSG_function_register("worker", worker);
- MSG_launch_application(argv[2]);
-
- /* Run the simulation */
- msg_error_t res = MSG_main();
-
- XBT_INFO("Simulation time %g", MSG_get_clock());
- return (res != MSG_OK);
-}
