-/* $Id$ */
-
-/* Copyright (c) 2002,2003,2004 Arnaud Legrand. All rights reserved. */
+/* Copyright (c) 2007-2015. 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");
+#include "simgrid/msg.h"
-int master(int argc, char *argv[]);
-int slave(int argc, char *argv[]);
-int forwarder(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");
-typedef enum {
- PORT_22 = 0,
- MAX_CHANNEL
-} channel_t;
+/** @addtogroup MSG_examples
+ *
+ * - <b>masterslave/masterslave.c: Master/slaves example</b>. This good old example is also very simple. Its
+ * basic version is fully commented on this page: \ref MSG_ex_master_slave, but several variants can be found in the
+ * same directory.
+ */
-#define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */
+#define FINALIZE ((void*)221297) /* a magic number to tell people to stop working */
-/** Emitter function */
-int master(int argc, char *argv[])
+static int master(int argc, char *argv[])
{
- int slaves_count = 0;
- m_host_t *slaves = NULL;
- int number_of_tasks = 0;
- double task_comp_size = 0;
- double task_comm_size = 0;
+ msg_host_t *slaves = NULL;
+ msg_task_t *todo = NULL;
+ long slaves_count = 0;
+ int i;
+ long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s");
+ double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s");
+ double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
- int i;
+ { /* Task creation */
+ char sprintf_buffer[64];
- xbt_assert1(sscanf(argv[1],"%d", &number_of_tasks),
- "Invalid argument %s\n",argv[1]);
- xbt_assert1(sscanf(argv[2],"%lg", &task_comp_size),
- "Invalid argument %s\n",argv[2]);
- xbt_assert1(sscanf(argv[3],"%lg", &task_comm_size),
- "Invalid argument %s\n",argv[3]);
+ 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 */
+ { /* Process organization */
slaves_count = argc - 4;
- slaves = calloc(slaves_count, sizeof(m_host_t));
-
+ slaves = xbt_new0(msg_host_t, slaves_count);
+
for (i = 4; i < argc; i++) {
- slaves[i-4] = MSG_get_host_by_name(argv[i]);
- if(slaves[i-4]==NULL) {
- INFO1("Unknown host %s. Stopping Now! ", argv[i]);
- abort();
- }
+ slaves[i - 4] = MSG_host_by_name(argv[i]);
+ xbt_assert(slaves[i - 4] != NULL, "Unknown host %s. Stopping Now! ", argv[i]);
}
}
- INFO1("Got %d slave(s) :", slaves_count);
+ XBT_INFO("Got %ld slaves and %ld tasks to process", slaves_count, number_of_tasks);
for (i = 0; i < slaves_count; i++)
- INFO1("%s", slaves[i]->name);
-
- INFO1("Got %d task to process :", number_of_tasks);
+ XBT_DEBUG("%s", MSG_host_get_name(slaves[i]));
for (i = 0; i < number_of_tasks; i++) {
- m_task_t task = MSG_task_create("Task", task_comp_size, task_comm_size,
- calloc(1,sizeof(double)));
- *((double*) task->data) = MSG_get_clock();
- MSG_task_put(task, slaves[i % slaves_count], PORT_22);
- INFO0("Send completed");
+ XBT_INFO("Sending \"%s\" to \"%s\"", todo[i]->name, MSG_host_get_name(slaves[i % slaves_count]));
+ if (MSG_host_self() == slaves[i % slaves_count]) {
+ XBT_INFO("Hey ! It's me ! :)");
+ }
+
+ MSG_task_send(todo[i], MSG_host_get_name(slaves[i % slaves_count]));
+ XBT_INFO("Sent");
+ }
+
+ XBT_INFO("All tasks have been dispatched. Let's tell everybody the computation is over.");
+ for (i = 0; i < slaves_count; i++) {
+ msg_task_t finalize = MSG_task_create("finalize", 0, 0, FINALIZE);
+ MSG_task_send(finalize, MSG_host_get_name(slaves[i]));
}
-
- INFO0("All tasks have been dispatched. Let's tell everybody the computation is over.");
- for (i = 0; i < slaves_count; i++)
- MSG_task_put(MSG_task_create("finalize", 0, 0, FINALIZE),
- slaves[i], PORT_22);
-
- INFO0("Goodbye now!");
+
+ XBT_INFO("Goodbye now!");
free(slaves);
+ free(todo);
return 0;
-} /* end_of_master */
+}
-/** Receiver function */
-int slave(int argc, char *argv[])
+static int slave(int argc, char *argv[])
{
- while(1) {
- m_task_t task = NULL;
- int a;
- double time1,time2;
-
- time1 = MSG_get_clock();
- a = MSG_task_get(&(task), PORT_22);
- time2 = MSG_get_clock();
- if (a == MSG_OK) {
- INFO1("Received \"%s\"", MSG_task_get_name(task));
- if(MSG_task_get_data(task)==FINALIZE) {
- MSG_task_destroy(task);
- break;
- }
- if(time1<*((double *)task->data))
- time1 = *((double *) task->data);
- INFO1("Communication time : \"%f\"", time2-time1);
- INFO1("Processing \"%s\"", MSG_task_get_name(task));
- MSG_task_execute(task);
- INFO1("\"%s\" done", MSG_task_get_name(task));
+ msg_task_t task = NULL;
+ XBT_ATTRIB_UNUSED int res;
+ while (1) {
+ res = MSG_task_receive(&(task),MSG_host_get_name(MSG_host_self()));
+ xbt_assert(res == MSG_OK, "MSG_task_get failed");
+
+ XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
+ if (!strcmp(MSG_task_get_name(task), "finalize")) {
MSG_task_destroy(task);
- } else {
- INFO0("Hey ?! What's up ? ");
- xbt_assert0(0,"Unexpected behavior");
+ 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;
}
- INFO0("I'm done. See you!");
+ XBT_INFO("I'm done. See you!");
return 0;
-} /* end_of_slave */
+}
-/** Test function */
-MSG_error_t test_all(const char *platform_file,
- const char *application_file)
+int main(int argc, char *argv[])
{
- MSG_error_t res = MSG_OK;
+ msg_error_t res = MSG_OK;
- /* MSG_config("surf_workstation_model","KCCFLN05"); */
- { /* Simulation setting */
- MSG_set_channel_number(MAX_CHANNEL);
- MSG_paje_output("msg_test.trace");
- MSG_create_environment(platform_file);
- }
- { /* Application deployment */
- MSG_function_register("master", master);
- MSG_function_register("slave", slave);
- MSG_launch_application(application_file);
- }
- res = MSG_main();
-
- INFO1("Simulation time %g",MSG_get_clock());
- return res;
-} /* end_of_test_all */
+ 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]);
+ MSG_create_environment(argv[1]);
-/** Main function */
-int main(int argc, char *argv[])
-{
- MSG_error_t res = MSG_OK;
+ MSG_function_register("master", master);
+ MSG_function_register("slave", slave);
+ MSG_launch_application(argv[2]);
- MSG_global_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]);
- MSG_clean();
-
- if(res==MSG_OK)
- return 0;
- else
- return 1;
-} /* end_of_main */
+ res = MSG_main();
+
+ XBT_INFO("Simulation time %g", MSG_get_clock());
+
+ return res != MSG_OK;
+}
