+ double clock = MSG_get_clock();
+
+ if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+ name = xbt_str_join(action, " ");
+#ifdef HAVE_TRACING
+ process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self());
+ int src_traced = counters->last_Irecv_sender_id;
+ int rank = get_rank(MSG_process_get_name(MSG_process_self()));
+ TRACE_smpi_ptp_in(rank, src_traced, rank, "wait");
+#endif
+
+ DEBUG1("Entering %s", name);
+ sprintf(task_name, "%s_wait", MSG_process_get_name(MSG_process_self()));
+ DEBUG1("wait: %s", task_name);
+ MSG_task_receive(&task, task_name);
+ MSG_task_destroy(task);
+ VERB2("%s %f", name, MSG_get_clock() - clock);
+ if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+ free(name);
+#ifdef HAVE_TRACING
+ TRACE_smpi_ptp_out(rank, src_traced, rank, "wait");
+ TRACE_smpi_recv(rank, src_traced, rank);
+#endif
+
+}
+
+/* FIXME: that's a poor man's implementation: we should take the message exchanges into account */
+static void action_barrier(xbt_dynar_t action)
+{
+ char *name = NULL;
+ static smx_mutex_t mutex = NULL;
+ static smx_cond_t cond = NULL;
+ static int processes_arrived_sofar=0;
+
+ if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+ name = xbt_str_join(action, " ");
+
+ if (mutex == NULL) { // first arriving on the barrier
+ mutex = SIMIX_req_mutex_init();
+ cond = SIMIX_req_cond_init();
+ processes_arrived_sofar=0;
+ }
+ DEBUG2("Entering barrier: %s (%d already there)", name,processes_arrived_sofar);
+
+ SIMIX_req_mutex_lock(mutex);
+ if (++processes_arrived_sofar == communicator_size) {
+ SIMIX_req_cond_broadcast(cond);
+ SIMIX_req_mutex_unlock(mutex);
+ } else {
+ SIMIX_req_cond_wait(cond,mutex);
+ SIMIX_req_mutex_unlock(mutex);
+ }
+
+ DEBUG1("Exiting barrier: %s", name);
+
+ processes_arrived_sofar--;
+ if (!processes_arrived_sofar) {
+ SIMIX_req_cond_destroy(cond);
+ SIMIX_req_mutex_destroy(mutex);
+ mutex=NULL;
+ }
+
+ if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+ free(name);
+
+}
+
+static void action_reduce(xbt_dynar_t action)
+{
+ int i;
+ char *name;
+ char task_name[80];
+ char spawn_name[80];
+ char **myargv;
+ char *comm_size = xbt_dynar_get_as(action, 2, char *);
+ char *comp_size = xbt_dynar_get_as(action, 3, char *);
+ m_process_t comm_helper = NULL;
+ m_task_t task = NULL, comp_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_assert0(communicator_size, "Size of Communicator is not defined"
+ ", can't use collective operations");
+
+ process_name = MSG_process_get_name(MSG_process_self());
+
+ name = bprintf("reduce_%d", counters->reduce_counter++);
+
+ if (!strcmp(process_name, "p0")) {
+ DEBUG2("%s: %s is the Root", name, process_name);
+ for (i = 1; i < communicator_size; i++) {
+ sprintf(spawn_name, "%s_p%d_%s", name, i,
+ MSG_process_get_name(MSG_process_self()));
+ sprintf(task_name, "%s_wait", spawn_name);
+ myargv = (char **) calloc(2, sizeof(char *));
+
+ myargv[0] = xbt_strdup(spawn_name);
+ myargv[1] = NULL;
+
+ comm_helper =
+ MSG_process_create_with_arguments(task_name, spawned_recv,
+ NULL, MSG_host_self(),
+ 1, myargv);
+ }
+
+ for (i = 1; i < communicator_size; i++) {
+ sprintf(task_name, "%s_p%d_p0_wait", name, i);
+ MSG_task_receive(&task, task_name);
+ MSG_task_destroy(task);
+ task = NULL;
+ }
+
+ comp_task =
+ MSG_task_create("reduce_comp", parse_double(comp_size), 0, NULL);
+ DEBUG1("%s: computing 'reduce_comp'", name);
+ MSG_task_execute(comp_task);
+ MSG_task_destroy(comp_task);
+ DEBUG1("%s: computed", name);
+ } else {
+ DEBUG2("%s: %s sends", name, process_name);
+ sprintf(task_name, "%s_%s_p0", name, process_name);
+ DEBUG1("put on %s", task_name);
+ MSG_task_send(MSG_task_create(name, 0, parse_double(comm_size), NULL),
+ task_name);
+ }
+
+ MSG_process_set_data(MSG_process_self(), (void *) counters);
+ VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);
+ free(name);
+}
+
+static void action_bcast(xbt_dynar_t action)
+{
+ int i;
+ char *name;
+ const char *process_name;
+ char task_name[80];
+ char spawn_name[80];
+ char **myargv;
+ m_process_t comm_helper = NULL;
+ m_task_t task = NULL;
+ char *size = xbt_dynar_get_as(action, 2, char *);
+ process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self());
+ double clock = MSG_get_clock();
+
+ xbt_assert0(communicator_size, "Size of Communicator is not defined"
+ ", can't use collective operations");
+
+
+ process_name = MSG_process_get_name(MSG_process_self());
+
+ name = bprintf("bcast_%d", counters->bcast_counter++);
+ if (!strcmp(process_name, "p0")) {
+ DEBUG2("%s: %s is the Root", name, process_name);
+
+ for (i = 1; i < communicator_size; i++) {
+ myargv = (char **) calloc(3, sizeof(char *));
+ myargv[0] = xbt_strdup(name);
+ myargv[1] = xbt_strdup(size);
+ myargv[2] = NULL;
+
+ sprintf(spawn_name, "%s_%d", myargv[0], i);
+ comm_helper =
+ MSG_process_create_with_arguments(spawn_name, spawned_send,
+ NULL, MSG_host_self(), 2,
+ myargv);
+ }
+
+ for (i = 1; i < communicator_size; i++) {
+ sprintf(task_name, "p%d_wait", i);
+ DEBUG1("get on %s", task_name);
+ MSG_task_receive(&task, task_name);
+ MSG_task_destroy(task);
+ task = NULL;
+ }
+ DEBUG2("%s: all messages sent by %s have been received",
+ name, process_name);
+ } else {
+ DEBUG2("%s: %s receives", name, process_name);
+ MSG_task_receive(&task, name);
+ MSG_task_destroy(task);
+ DEBUG2("%s: %s has received", name, process_name);
+ sprintf(task_name, "%s_wait", process_name);
+ DEBUG1("put on %s", task_name);
+ MSG_task_send(MSG_task_create("waiter", 0, 0, NULL), task_name);
+ }
+
+ MSG_process_set_data(MSG_process_self(), (void *) counters);
+ VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);