-/* 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/msg.h"
#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.
- */
+#include <xbt/replay.hpp>
XBT_LOG_NEW_DEFAULT_CATEGORY(actions, "Messages specific for this msg example");
int communicator_size = 0;
/* Used to implement irecv+wait */
xbt_dynar_t irecvs; /* of msg_comm_t */
xbt_dynar_t tasks; /* of msg_task_t */
-} s_process_globals_t, *process_globals_t;
+} s_process_globals_t;
+
+typedef s_process_globals_t *process_globals_t;
/* Helper function */
static double parse_double(const char *string)
process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
/* Destroy any isend which correspond to completed communications */
- int found;
msg_comm_t comm;
- while ((found = MSG_comm_testany(globals->isends)) != -1) {
- xbt_dynar_remove_at(globals->isends, found, &comm);
+ while (1/*true*/) {
+ int pos_found = MSG_comm_testany(globals->isends);
+ if (pos_found == -1) /* none remaining */
+ break;
+ xbt_dynar_remove_at(globals->isends, pos_found, &comm);
MSG_comm_destroy(comm);
}
}
double size = parse_double(size_str);
double clock = MSG_get_clock();
- sprintf(to, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
+ snprintf(to,249, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
ACT_DEBUG("Entering Send: %s (size: %g)", NAME, size);
if (size < 65536) {
double clock = MSG_get_clock();
process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
- sprintf(to, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
+ snprintf(to,249, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
msg_comm_t comm = MSG_task_isend(MSG_task_create(to, 0, parse_double(size), NULL), to);
xbt_dynar_push(globals->isends, &comm);
msg_task_t task = NULL;
double clock = MSG_get_clock();
- sprintf(mailbox_name, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
+ snprintf(mailbox_name,249, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
ACT_DEBUG("Receiving: %s", NAME);
msg_error_t res = MSG_task_receive(&task, mailbox_name);
XBT_DEBUG("Irecv on %s", MSG_process_get_name(MSG_process_self()));
- sprintf(mailbox, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
+ snprintf(mailbox,249, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
msg_task_t t = NULL;
xbt_dynar_push(globals->tasks, &t);
msg_comm_t c = MSG_task_irecv(xbt_dynar_get_ptr(globals->tasks, xbt_dynar_length(globals->tasks) - 1), mailbox);
ACT_DEBUG("Entering barrier: %s (%d already there)", NAME, processes_arrived_sofar);
simcall_mutex_lock(mutex);
- if (++processes_arrived_sofar == communicator_size) {
+ processes_arrived_sofar++;
+ if (processes_arrived_sofar == communicator_size) {
simcall_cond_broadcast(cond);
simcall_mutex_unlock(mutex);
} else {
ACT_DEBUG("Exiting barrier: %s", NAME);
processes_arrived_sofar--;
- if (!processes_arrived_sofar) {
- SIMIX_cond_destroy(cond);
- SIMIX_mutex_destroy(mutex);
+ if (processes_arrived_sofar<=0) {
+ SIMIX_cond_unref(cond);
+ SIMIX_mutex_unref(mutex);
mutex = NULL;
}
}
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);
+ 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++) {
- sprintf(mailbox, "%s_p0_p%d", bcast_identifier, i);
+ for (int i = 1; i < communicator_size; i++) {
+ snprintf(mailbox,79, "%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);
XBT_DEBUG("%s: all messages sent by %s have been received", bcast_identifier, process_name);
} else {
- sprintf(mailbox, "%s_p0_%s", bcast_identifier, process_name);
+ snprintf(mailbox,79, "%s_p0_%s", bcast_identifier, process_name);
MSG_task_receive(&task, mailbox);
MSG_task_destroy(task);
XBT_DEBUG("%s: %s has received", bcast_identifier, process_name);
}
}
-/** Main function */
int main(int argc, char *argv[])
{
- msg_error_t res = MSG_OK;
-
/* Check the given arguments */
MSG_init(&argc, argv);
/* Explicit initialization of the action module is required now*/
xbt_replay_action_register("compute", action_compute);
/* Actually do the simulation using MSG_action_trace_run */
- res = MSG_action_trace_run(argv[3]); // it's ok to pass a NULL argument here
+ msg_error_t res = MSG_action_trace_run(argv[3]); // it's ok to pass a NULL argument here
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;
}