-/* Copyright (c) 2009-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2009-2016. 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/simix.h" /* semaphores for the barrier */
#include <xbt/replay.h>
-/** @addtogroup MSG_examples
- *
- * @section MSG_ex_actions Trace driven simulations
- *
- * The <b>actions/actions.c</b> example demonstrates how to run trace-driven simulations. It is very handy when you
- * want to test an algorithm or protocol that does nothing unless it receives some events from outside. For example,
- * a P2P protocol reacts to requests from the user, but does nothing if there is no such event.
- *
- * In such situations, SimGrid allows to write your protocol in your C file, and the events to react to in a separate
- * text file. Declare a function handling each of the events that you want to accept in your trace files, register
- * them using \ref xbt_replay_action_register in your main, and then use \ref MSG_action_trace_run to launch the
- * simulation. You can either have one trace file containing all your events, or a file per simulated process. Check
- * the tesh files in the example directory for details on how to do it.
- *
- * This example uses this approach to replay MPI-like traces. It comes with a set of event handlers reproducing MPI
- * events. This is somehow similar to SMPI, yet differently implemented. This code should probably be changed to use
- * SMPI internals instead, but wasn't, so far.
- */
-
XBT_LOG_NEW_DEFAULT_CATEGORY(actions, "Messages specific for this msg example");
int communicator_size = 0;
typedef struct {
int last_Irecv_sender_id;
int bcast_counter;
- int reduce_counter;
- int allReduce_counter;
xbt_dynar_t isends; /* of msg_comm_t */
/* Used to implement irecv+wait */
xbt_dynar_t irecvs; /* of msg_comm_t */
static void action_bcast(const char *const *action)
{
- int i;
- char *bcast_identifier;
char mailbox[80];
double comm_size = parse_double(action[2]);
msg_task_t task = NULL;
- const char *process_name;
double clock = MSG_get_clock();
process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self());
xbt_assert(communicator_size, "Size of Communicator is not defined, can't use collective operations");
- process_name = MSG_process_get_name(MSG_process_self());
+ const char * process_name = MSG_process_get_name(MSG_process_self());
- bcast_identifier = bprintf("bcast_%d", counters->bcast_counter++);
+ char *bcast_identifier = bprintf("bcast_%d", counters->bcast_counter++);
if (!strcmp(process_name, "p0")) {
XBT_DEBUG("%s: %s is the Root", bcast_identifier, process_name);
msg_comm_t *comms = xbt_new0(msg_comm_t, communicator_size - 1);
- for (i = 1; i < communicator_size; i++) {
+ for (int i = 1; i < communicator_size; i++) {
sprintf(mailbox, "%s_p0_p%d", bcast_identifier, i);
comms[i - 1] = MSG_task_isend(MSG_task_create(mailbox, 0, comm_size, NULL), mailbox);
}
MSG_comm_waitall(comms, communicator_size - 1, -1);
- for (i = 1; i < communicator_size; i++)
+ for (int i = 1; i < communicator_size; i++)
MSG_comm_destroy(comms[i - 1]);
xbt_free(comms);
}
}
-/** Main function */
int main(int argc, char *argv[])
{
msg_error_t res = MSG_OK;
XBT_INFO("Simulation time %g", MSG_get_clock());
- /* Explicit finalization of the action module is required now*/
- MSG_action_exit();
+ MSG_action_exit(); /* Explicit finalization of the action module */
return res != MSG_OK;
}
