+ using std::placeholders::_1;
+
+ double next_iter_after_date = MSG_get_clock() + opt::min_comp_iter_duration;
+ while (still_running()) {
+ // receive
+ mutex.acquire();
+ if (real_load > 0.0)
+ data_receive(0.0);
+ else
+ data_receive(opt::min_comp_iter_duration);
+ mutex.release();
+
+ // send
+ comm.data_flush(false);
+ mutex.acquire();
+ std::for_each(neigh.begin(), neigh.end(),
+ std::bind(&process::data_send, this, _1));
+ mutex.release();
+
+ if (real_load == 0.0)
+ continue;
+
+ // compute
+ ++comp_iter;
+ double flops = opt::comp_cost(real_load);
+ m_task_t task = MSG_task_create("computation", flops, 0.0, NULL);
+ TRACE_msg_set_task_category(task, TRACE_CAT_COMP);
+ XBT_DEBUG("compute %g flop%s", flops, ESSE(flops));
+ MSG_task_execute(task);
+ add_comp_amount(flops);
+ MSG_task_destroy(task);
+
+ sleep_until_date(next_iter_after_date, opt::min_comp_iter_duration);
+ }
+
+ XBT_VERB("Going to finalize for %s...", __func__);
+ finalizing = true;
+ total_load_running -= real_load;
+ XBT_DEBUG("send DATA_CLOSE to %zu neighbor%s",
+ neigh.size(), ESSE(neigh.size()));
+ std::for_each(neigh.begin(), neigh.end(),
+ std::bind(&process::data_close, this, _1));
+ while (data_close_pending) {
+ comm.data_flush(false);
+ XBT_DEBUG("waiting for %d DATA_CLOSE", data_close_pending);
+ data_receive(-1.0);
+ }
+ comm.data_flush(true);
+}
+
+bool process::still_running()
+{
+ static bool last_status = true;
+
+ if (!last_status) {
+ /* nop */
+
+ } else if (opt::exit_request) {
+ XBT_VERB("Global exit requested");
+ last_status = false;
+
+ } else if (opt::time_limit && MSG_get_clock() >= opt::time_limit) {
+ XBT_VERB("Reached time limit: %g/%g", MSG_get_clock(), opt::time_limit);
+ last_status = false;
+
+ } else if (opt::lb_maxiter && lb_iter >= opt::lb_maxiter) {
+ XBT_VERB("Reached lb_maxiter: %d/%d", lb_iter, opt::lb_maxiter);
+ last_status = false;
+
+ } else if (opt::comp_maxiter && comp_iter >= opt::comp_maxiter) {
+ XBT_VERB("Reached comp_maxiter: %d/%d", comp_iter, opt::comp_maxiter);
+ last_status = false;
+
+ } else if (opt::exit_on_close && close_received) {
+ XBT_VERB("Close received");
+ last_status = false;
+
+ } else if (real_load == 0.0 && !data_close_pending) {
+ XBT_VERB("I'm a poor lonesome process, and I have no load...");
+ last_status = false;
+
+ } else if (100.0 * total_load_running / total_load_init <=
+ opt::load_ratio_threshold) {
+ // fixme: this check should be implemented with a distributed
+ // algorithm, and not a shared global variable!
+ XBT_VERB("No more load to balance in system.");
+ last_status = false;
+ }
+
+ return last_status;
+}
+
+double process::get_sum_of_to_send() const
+{
+ using std::placeholders::_1;
+ using std::placeholders::_2;
+
+ return std::accumulate(neigh.begin(), neigh.end(), 0.0,
+ std::bind(std::plus<double>(), _1,
+ std::bind(&neighbor::get_to_send, _2)));
+}
+
+void process::load_balance()
+{
+ if (lb_iter == 1) // warn only once
+ XBT_WARN("process::load_balance() is a no-op!");
+}
+
+void process::send(neighbor& nb, double amount)
+{
+ expected_load -= amount;
+ nb.set_to_send(nb.get_to_send() + amount);
+ nb.set_load(nb.get_load() + amount);
+}
+
+void process::ctrl_send(neighbor& nb)
+{
+ double info_to_send = expected_load;
+ double debt_to_send;
+ if (opt::bookkeeping) { // bookkeeping
+ debt_to_send = nb.get_to_send();
+ if (debt_to_send > 0.0) {
+ nb.set_to_send(0.0);
+ nb.set_debt(nb.get_debt() + debt_to_send);
+ }
+ } else { // !bookkeeping
+ debt_to_send = 0.0;
+ }
+ if (info_to_send != prev_load_broadcast || debt_to_send > 0.0) {
+ message* msg = new message(message::CTRL, info_to_send, debt_to_send);
+ add_ctrl_send_mesg(msg->get_size());
+ comm.ctrl_send(nb.get_ctrl_mbox(), msg);
+ }
+}
+
+void process::data_send(neighbor& nb)
+{
+ double load_to_send;
+ if (opt::bookkeeping) {
+ load_to_send = std::min(real_load, nb.get_debt());
+ if (load_to_send >= opt::min_transfer_amount) {
+ nb.set_debt(nb.get_debt() - load_to_send);
+ real_load -= load_to_send;
+ } else {
+ load_to_send = 0.0;
+ }
