-/* Copyright (c) 2007-2010, 2013-2014. The SimGrid Team.
- * All rights reserved. */
+/* 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 <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 */
+#include "simgrid/msg.h"
-/* 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);
+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 */
return buffer;
}
-/** Emitter function */
-int master(int argc, char *argv[])
+/* forward definitions */
+static int master(int argc, char* argv[]);
+static int worker(int argc, char* argv[]);
+
+static 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);
- double task_comp_size = 0;
- double task_comm_size = 0;
char channel[1024];
- double timeout = -1;
-
- int i;
-
- _XBT_GNUC_UNUSED int res = sscanf(argv[1], "%lg", &timeout);
- 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]);
-
- { /* 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 will send tasks for %g seconds!",
- workers_count, timeout);
+ 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 */
- for (i = 0; 1; i++) {
- char sprintf_buffer[64];
- msg_task_t task = NULL;
+ /* Get the info about the worker processes (directly from SimGrid) */
+ int workers_count = argc - 4;
+ 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;
+ }
- if(MSG_get_clock()>timeout) 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);
- sprintf(sprintf_buffer, "Task_%d", i);
- task = MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size,
- NULL);
+ /* 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);
- build_channel_name(channel,master_name,
- MSG_host_get_name(workers[i % workers_count]));
-
- XBT_DEBUG("Sending \"%s\" to channel \"%s\"", task->name, channel);
+ 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++;
}
- int task_num = i;
- XBT_DEBUG
- ("All tasks have been dispatched. Let's tell everybody the computation is over.");
- for (i = 0; i < workers_count; i++) {
+ 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])));
+ MSG_host_get_name(workers[i % workers_count])));
}
XBT_INFO("Sent %d tasks in total!", task_num);
free(workers);
- free(todo);
return 0;
-} /* end_of_master */
+}
-/** Receiver function */
-int worker(int argc, char *argv[])
+/** Worker function */
+static 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()));
+ 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);
+ XBT_DEBUG("Receiving on channel '%s'", channel);
while (1) {
- res = MSG_task_receive(&(task),channel);
+ 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));
+
+ 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));
+ XBT_DEBUG("Processing '%s'", MSG_task_get_name(task));
MSG_task_execute(task);
- XBT_DEBUG("\"%s\" done", MSG_task_get_name(task));
+ XBT_DEBUG("'%s' done", MSG_task_get_name(task));
MSG_task_destroy(task);
- task = NULL;
}
XBT_DEBUG("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]);
+ 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]);
- if (res == MSG_OK)
- return 0;
- else
- return 1;
-} /* end_of_main */
+ /* 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);
+}
