#include <stdio.h>
#include <stdlib.h>
#include "msg/msg.h" /* Yeah! If you want to use msg, you need to include msg/msg.h */
-#include "msg/mailbox.h" /* we play funny tricks with mailboxes and rdv points */
-#include "simix/simix.h" /* semaphores for the barrier */
+#include "simgrid/simix.h" /* semaphores for the barrier */
#include "xbt.h" /* calloc, printf */
#include "instr/instr_private.h"
-
-#include "msg/private.h" /* You don't want to know why, trust us */
-#include "simix/private.h"
-
-void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory);
+#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");
XBT_VERB("%s %f", name, MSG_get_clock() - clock);
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ free(name);
#ifdef HAVE_TRACING
TRACE_smpi_ptp_out(rank, rank, dst_traced, "send");
asynchronous_cleanup();
}
-static int task_recv_matching(void*ignored,void*recv_task) {
- XBT_DEBUG("Trying to recv_match with %p", recv_task);
- return recv_task != NULL;
-}
-
static void action_Isend(const char *const *action)
{
char to[250];
sprintf(to, "%s_%s", MSG_process_get_name(MSG_process_self()),action[2]);
- m_task_t task = MSG_task_create(to,0,parse_double(size),NULL);
-
- smx_rdv_t rdv = MSG_mailbox_get_by_alias(to);
-
- if(SIMIX_comm_has_recv_match(rdv, task_recv_matching, NULL)) {
- XBT_DEBUG("Switching back to MSG_task_send: %s", to);
- MSG_task_send(task, to);
- } else {
-
- msg_comm_t comm = MSG_task_isend_with_matching(task, to, /*matching madness*/NULL,task);
- xbt_dynar_push(globals->isends,&comm);
-
- if (task->simdata->message_size < 65536) {
- /* Close your eyes, it burns ! */
- comm->s_comm->comm.dst_proc = SIMIX_process_get_by_name(action[2]);
- comm->s_comm->comm.dst_buff = NULL;
- comm->s_comm->comm.dst_buff_size = NULL;
- comm->s_comm->comm.dst_data = NULL;
- comm->s_comm->state = SIMIX_READY;
- comm->s_comm->comm.refcount++;
- SIMIX_comm_start(comm->s_comm);
- }
+ msg_comm_t comm =
+ MSG_task_isend( MSG_task_create(to,0,parse_double(size),NULL), to);
+ xbt_dynar_push(globals->isends,&comm);
- XBT_DEBUG("Isend on %s", MSG_process_get_name(MSG_process_self()));
- XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock);
- }
+ XBT_DEBUG("Isend on %s", MSG_process_get_name(MSG_process_self()));
+ XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock);
asynchronous_cleanup();
}
-static int task_sent_matching(void*ignored,void*sent_task) {
- m_task_t t = (m_task_t)sent_task;
- if (t!=NULL && MSG_task_get_data_size(t)<65536)
- return 1; /* that's supposed to be already arrived */
- return 0; /* rendez-vous mode: it's not there yet */
-}
static void action_recv(const char *const *action)
{
if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
name = xbt_str_join_array(action, " ");
- /* The next chunk is to deal with the fact that for short messages,
- * if the send occurs before the receive, the message is already sent and
- * buffered on receiver side when the recv() occurs.
- *
- * So the next chunk detects this fact and cancel the simix communication instead.
- */
-
- /* make sure the rdv is created on need by asking to MSG instead of simix directly */
- smx_rdv_t rdv = MSG_mailbox_get_by_alias(mailbox_name);
- smx_action_t act = SIMIX_comm_get_send_match(rdv, task_sent_matching, NULL);
- if (act!=NULL){
- /* FIXME account for the memcopy time if needed */
- task = act->comm.src_data;
-
- if (task->simdata->message_size < 65536) {
- act->comm.refcount--; /* See action_send for more pain */
- if(act->state == SIMIX_DONE)
- SIMIX_comm_finish(act);
- else
- SIMIX_req_comm_wait(act, -1.0);
- return;
- }
- }
-
#ifdef HAVE_TRACING
int rank = get_rank(MSG_process_get_name(MSG_process_self()));
int src_traced = get_rank(action[2]);
#endif
XBT_DEBUG("Receiving: %s", name);
- /* Mimic a call to MSG_task_receive(&task, mailbox_name); */
- SIMIX_req_comm_recv(rdv, &task, NULL, NULL, &task, -1.0);
-
+ MSG_error_t res = MSG_task_receive(&task, mailbox_name);
// MSG_task_receive(&task, MSG_process_get_name(MSG_process_self()));
XBT_VERB("%s %f", name, MSG_get_clock() - clock);
- MSG_task_destroy(task);
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ if (res == MSG_OK) {
+ MSG_task_destroy(task);
+ }
+
+ free(name);
#ifdef HAVE_TRACING
TRACE_smpi_ptp_out(rank, src_traced, rank, "recv");
TRACE_smpi_recv(rank, src_traced, rank);
MSG_task_destroy(task);
XBT_VERB("%s %f", name, MSG_get_clock() - clock);
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ free(name);
#ifdef HAVE_TRACING
TRACE_smpi_ptp_out(rank, src_traced, rank, "wait");
TRACE_smpi_recv(rank, src_traced, rank);
name = xbt_str_join_array(action, " ");
if (mutex == NULL) { // first arriving on the barrier
- mutex = SIMIX_req_mutex_init();
- cond = SIMIX_req_cond_init();
+ mutex = simcall_mutex_init();
+ cond = simcall_cond_init();
processes_arrived_sofar=0;
}
XBT_DEBUG("Entering barrier: %s (%d already there)", name,processes_arrived_sofar);
- SIMIX_req_mutex_lock(mutex);
+ simcall_mutex_lock(mutex);
if (++processes_arrived_sofar == communicator_size) {
- SIMIX_req_cond_broadcast(cond);
- SIMIX_req_mutex_unlock(mutex);
+ simcall_cond_broadcast(cond);
+ simcall_mutex_unlock(mutex);
} else {
- SIMIX_req_cond_wait(cond,mutex);
- SIMIX_req_mutex_unlock(mutex);
+ simcall_cond_wait(cond,mutex);
+ simcall_mutex_unlock(mutex);
}
XBT_DEBUG("Exiting barrier: %s", name);
processes_arrived_sofar--;
if (!processes_arrived_sofar) {
- SIMIX_req_cond_destroy(cond);
- SIMIX_req_mutex_destroy(mutex);
+ simcall_cond_destroy(cond);
+ simcall_mutex_destroy(mutex);
mutex=NULL;
}
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ free(name);
}
MSG_process_sleep(parse_double(duration));
XBT_VERB("%s %f ", name, MSG_get_clock() - clock);
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ free(name);
}
static void action_allReduce(const char *const *action) {
name = xbt_str_join_array(action, " ");
communicator_size = parse_double(size);
XBT_VERB("%s %f", name, MSG_get_clock() - clock);
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ free(name);
}
static void action_compute(const char *const *action)
MSG_task_execute(task);
MSG_task_destroy(task);
XBT_VERB("%s %f", name, MSG_get_clock() - clock);
- if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
- free(name);
+ free(name);
}
static void action_init(const char *const *action)
{
MSG_error_t res = MSG_OK;
- smx_factory_initializer_to_use = SIMIX_ctx_raw_factory_init;
-
/* Check the given arguments */
MSG_global_init(&argc, argv);
if (argc < 3) {
MSG_launch_application(argv[2]);
/* Action registration */
- MSG_action_register("init", action_init);
- MSG_action_register("finalize", action_finalize);
- MSG_action_register("comm_size",action_comm_size);
- MSG_action_register("send", action_send);
- MSG_action_register("Isend", action_Isend);
- MSG_action_register("recv", action_recv);
- MSG_action_register("Irecv", action_Irecv);
- MSG_action_register("wait", action_wait);
- MSG_action_register("barrier", action_barrier);
- MSG_action_register("bcast", action_bcast);
- MSG_action_register("reduce", action_reduce);
- MSG_action_register("allReduce",action_allReduce);
- MSG_action_register("sleep", action_sleep);
- MSG_action_register("compute", action_compute);
+ xbt_replay_action_register("init", action_init);
+ xbt_replay_action_register("finalize", action_finalize);
+ xbt_replay_action_register("comm_size",action_comm_size);
+ xbt_replay_action_register("send", action_send);
+ xbt_replay_action_register("Isend", action_Isend);
+ xbt_replay_action_register("recv", action_recv);
+ xbt_replay_action_register("Irecv", action_Irecv);
+ xbt_replay_action_register("wait", action_wait);
+ xbt_replay_action_register("barrier", action_barrier);
+ xbt_replay_action_register("bcast", action_bcast);
+ xbt_replay_action_register("reduce", action_reduce);
+ xbt_replay_action_register("allReduce",action_allReduce);
+ xbt_replay_action_register("sleep", action_sleep);
+ xbt_replay_action_register("compute", action_compute);
/* Actually do the simulation using MSG_action_trace_run */
