--- /dev/null
+/* Copyright (c) 2007, 2008, 2009, 2010. 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 <stdio.h>
+#include "msg/msg.h" /* Yeah! If you want to use msg, you need to include msg/msg.h */
+#include "xbt/sysdep.h" /* calloc, printf */
+
+/* Create a log channel to have nice outputs. */
+#include "xbt/log.h"
+#include "xbt/asserts.h"
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test,
+ "Messages specific for this msg example");
+
+int master(int argc, char *argv[]);
+int worker(int argc, char *argv[]);
+msg_error_t test_all(const char *platform_file,
+ const char *application_file);
+
+#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;
+}
+
+/** Emitter function */
+int master(int argc, char *argv[])
+{
+ int workers_count = 0;
+ msg_host_t *workers = NULL;
+ msg_task_t *todo = NULL;
+ msg_host_t host_self = MSG_host_self();
+ char *master_name = (char *) MSG_host_get_name(host_self);
+ int number_of_tasks = 0;
+ double task_comp_size = 0;
+ double task_comm_size = 0;
+ char channel[1024];
+
+ int i;
+
+ _XBT_GNUC_UNUSED int res = sscanf(argv[1], "%d", &number_of_tasks);
+ xbt_assert(res,"Invalid argument %s\n", argv[1]);
+ res = sscanf(argv[2], "%lg", &task_comp_size);
+ xbt_assert(res, "Invalid argument %s\n", argv[2]);
+ res = sscanf(argv[3], "%lg", &task_comm_size);
+ xbt_assert(res, "Invalid argument %s\n", argv[3]);
+
+ { /* Task creation */
+ char sprintf_buffer[64];
+
+ todo = xbt_new0(msg_task_t, number_of_tasks);
+
+ for (i = 0; i < number_of_tasks; i++) {
+ sprintf(sprintf_buffer, "Task_%d", i);
+ todo[i] =
+ MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size,
+ NULL);
+ }
+ }
+
+ { /* Process organisation */
+ workers_count = MSG_get_host_number();
+ workers = xbt_dynar_to_array(MSG_hosts_as_dynar());
+
+ for (i = 0; i < workers_count; i++)
+ if(host_self == workers[i]) {
+ workers[i] = workers[workers_count-1];
+ workers_count--;
+ break;
+ }
+
+ for (i = 0; i < workers_count; i++)
+ MSG_process_create("worker", worker, master_name, workers[i]);
+ }
+
+ XBT_INFO("Got %d workers and %d tasks to process", workers_count,
+ number_of_tasks);
+
+ for (i = 0; i < number_of_tasks; i++) {
+ build_channel_name(channel,master_name,
+ MSG_host_get_name(workers[i % workers_count]));
+
+ XBT_INFO("Sending \"%s\" to channel \"%s\"", todo[i]->name, channel);
+
+ MSG_task_send(todo[i], channel);
+ XBT_INFO("Sent");
+ }
+
+ XBT_INFO
+ ("All tasks have been dispatched. Let's tell everybody the computation is over.");
+ for (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("Goodbye now!");
+ free(workers);
+ free(todo);
+ return 0;
+} /* end_of_master */
+
+/** Receiver function */
+int worker(int argc, char *argv[])
+{
+ msg_task_t task = NULL;
+ _XBT_GNUC_UNUSED int res;
+ char channel[1024];
+
+ build_channel_name(channel,MSG_process_get_data(MSG_process_self()),
+ MSG_host_get_name(MSG_host_self()));
+
+ XBT_INFO("Receiving on channel \"%s\"", channel);
+
+ while (1) {
+ res = MSG_task_receive(&(task),channel);
+ xbt_assert(res == MSG_OK, "MSG_task_receive failed");
+
+ XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
+ if (!strcmp(MSG_task_get_name(task), "finalize")) {
+ MSG_task_destroy(task);
+ break;
+ }
+
+ XBT_INFO("Processing \"%s\"", MSG_task_get_name(task));
+ MSG_task_execute(task);
+ XBT_INFO("\"%s\" done", MSG_task_get_name(task));
+ MSG_task_destroy(task);
+ task = NULL;
+ }
+ XBT_INFO("I'm done. See you!");
+ return 0;
+} /* end_of_worker */
+
+/** Test function */
+msg_error_t test_all(const char *platform_file,
+ const char *application_file)
+{
+ msg_error_t res = MSG_OK;
+
+ { /* Simulation setting */
+ MSG_create_environment(platform_file);
+ }
+ { /* Application deployment */
+ MSG_function_register("master", master);
+ MSG_function_register("worker", worker);
+ MSG_launch_application(application_file);
+ }
+ res = MSG_main();
+
+ XBT_INFO("Simulation time %g", MSG_get_clock());
+ return res;
+} /* end_of_test_all */
+
+
+/** Main function */
+int main(int argc, char *argv[])
+{
+ msg_error_t res = MSG_OK;
+
+ MSG_init(&argc, argv);
+ if (argc < 3) {
+ printf("Usage: %s platform_file deployment_file\n", argv[0]);
+ printf("example: %s msg_platform.xml msg_deployment.xml\n", argv[0]);
+ exit(1);
+ }
+ res = test_all(argv[1], argv[2]);
+
+ if (res == MSG_OK)
+ return 0;
+ else
+ return 1;
+} /* end_of_main */
