--- /dev/null
+/* Copyright (c) 2007-2017. 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"
+
+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 workers_count = MSG_get_host_number();
+ msg_host_t* workers = xbt_dynar_to_array(MSG_hosts_as_dynar());
+
+ for (int i = 0; i < workers_count; i++) // Remove my host from the list
+ if (host_self == workers[i]) {
+ workers[i] = workers[workers_count - 1];
+ workers_count--;
+ break;
+ }
+
+ for (int i = 0; i < workers_count; i++)
+ MSG_process_create("worker", worker, (void*)master_name, workers[i]);
+ XBT_INFO("Got %d workers and will send tasks for %g seconds", workers_count, timeout);
+
+ /* Dispatch the tasks */
+ int task_num = 0;
+ while (1) {
+ if (MSG_get_clock() > timeout)
+ break;
+
+ 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);
+
+ build_channel_name(channel, master_name, MSG_host_get_name(workers[task_num % workers_count]));
+
+ XBT_DEBUG("Sending '%s' to channel '%s'", task->name, channel);
+ MSG_task_send(task, channel);
+ XBT_DEBUG("Sent");
+ task_num++;
+ }
+
+ XBT_DEBUG("All tasks have been dispatched. Let's tell everybody the computation is over.");
+ for (int i = 0; i < workers_count; i++) {
+ 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(workers[i % workers_count])));
+ }
+
+ 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];
+ build_channel_name(channel, MSG_process_get_data(MSG_process_self()), MSG_host_get_name(MSG_host_self()));
+
+ XBT_DEBUG("Receiving on channel '%s'", channel);
+
+ while (1) {
+ msg_task_t task = NULL;
+ int res = MSG_task_receive(&(task), channel);
+ xbt_assert(res == MSG_OK, "MSG_task_get 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);
+}
