+ char *reduce_identifier;
+ char mailbox[80];
+ double comm_size = parse_double(action[2]);
+ double comp_size = parse_double(action[3]);
+ msg_task_t 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_assert(communicator_size, "Size of Communicator is not defined, "
+ "can't use collective operations");
+
+ process_name = MSG_process_get_name(MSG_process_self());
+
+ reduce_identifier = bprintf("reduce_%d", counters->reduce_counter++);
+
+ if (!strcmp(process_name, "p0")) {
+ XBT_DEBUG("%s: %s is the Root", reduce_identifier, process_name);
+
+ xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
+ msg_task_t *tasks = xbt_new0(msg_task_t, communicator_size - 1);
+ int i;
+
+ for (i = 1; i < communicator_size; i++) {
+ sprintf(mailbox, "%s_p%d_p0", reduce_identifier, i);
+ xbt_dynar_push_as(comms, msg_comm_t,
+ MSG_task_irecv(&(tasks[i - 1]), mailbox));
+ }
+ MSG_comm_waitall(comms, -1);
+
+ msg_comm_t comm;
+ unsigned int cursor;
+ xbt_dynar_foreach(comms, cursor, comm) {
+ MSG_comm_destroy(comm);
+ MSG_task_destroy(tasks[cursor]);
+ }
+ free(tasks);
+ xbt_dynar_free(&comms);
+
+ comp_task = MSG_task_create("reduce_comp", comp_size, 0, NULL);
+ XBT_DEBUG("%s: computing 'reduce_comp'", reduce_identifier);
+ MSG_task_execute(comp_task);
+ MSG_task_destroy(comp_task);
+ XBT_DEBUG("%s: computed", reduce_identifier);
+
+ } else {
+ XBT_DEBUG("%s: %s sends", reduce_identifier, process_name);
+ sprintf(mailbox, "%s_%s_p0", reduce_identifier, process_name);
+ XBT_DEBUG("put on %s", mailbox);
+ MSG_task_send(MSG_task_create(reduce_identifier, 0, comm_size, NULL),
+ mailbox);
+ }
+
+ XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock);
+ free(reduce_identifier);
+}
+
+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());
+
+ bcast_identifier = bprintf("bcast_%d", counters->bcast_counter++);
+
+ if (!strcmp(process_name, "p0")) {
+ XBT_DEBUG("%s: %s is the Root", bcast_identifier, process_name);
+
+ xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
+
+
+ for (i = 1; i < communicator_size; i++) {
+ sprintf(mailbox, "%s_p0_p%d", bcast_identifier, i);
+ xbt_dynar_push_as(comms, msg_comm_t,
+ MSG_task_isend(MSG_task_create
+ (mailbox, 0, comm_size, NULL), mailbox));
+ }
+ MSG_comm_waitall(comms, -1);
+
+ msg_comm_t comm;
+ unsigned int cursor;
+ xbt_dynar_foreach(comms, cursor, comm) {
+ MSG_comm_destroy(comm);
+ }
+ xbt_dynar_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);
+ MSG_task_receive(&task, mailbox);
+ MSG_task_destroy(task);
+ XBT_DEBUG("%s: %s has received", bcast_identifier, process_name);
+ }
+
+ XBT_VERB("%s %f", xbt_str_join_array(action, " "), MSG_get_clock() - clock);
+ free(bcast_identifier);
+}
+
+
+static void action_sleep(const char *const *action)
+{
+ char *name = NULL;
+ const char *duration = action[2];
+ double clock = MSG_get_clock();
+
+ if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+ name = xbt_str_join_array(action, " ");
+
+ XBT_DEBUG("Entering %s", name);