#include <algorithm>
-#include <cstring>
+#include <functional>
#include <msg/msg.h>
#include <xbt/log.h>
-#include "communicator.h"
-#include "simgrid_features.h"
-// XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu);
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(comm, simu,
- "Messages from asynchronous pipes");
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm);
+
+#include "misc.h"
+#include "tracing.h"
+
+#include "communicator.h"
namespace {
- bool comm_test_n_destroy(msg_comm_t& comm)
+ void check_for_lost_messages(size_t size, const char* descr)
{
- if (MSG_comm_test(comm)) {
- MSG_comm_destroy(comm);
- return true;
- } else
- return false;
+ if (size)
+ XBT_WARN("lost %zu %s message%s!", size, descr, ESSE(size));
}
}
-class communicator::message {
-public:
- message(message_type t, double a): type(t), amount(a) { }
-
- message_type type;
- double amount;
-};
-
communicator::communicator()
+ : host(static_cast<hostdata*>(MSG_host_get_data(MSG_host_self())))
{
- const char* hostname = MSG_host_get_name(MSG_host_self());
- ctrl_mbox = bprintf("%s_ctrl", hostname);
- ctrl_task = NULL;
- ctrl_comm = MSG_task_irecv(&ctrl_task, ctrl_mbox);
-
- data_mbox = bprintf("%s_data", hostname);
- data_task = NULL;
- data_comm = MSG_task_irecv(&data_task, data_mbox);
+ receiver_thread = new_msg_thread("receiver",
+ std::bind(&communicator::receiver, this));
+ receiver_thread->start();
}
communicator::~communicator()
{
- // fixme: don't know how to free pending communications
- // (data_comm, ctrl_comm and sent_comm)
+ msg_task_t task;
- free(data_mbox);
- free(ctrl_mbox);
+ XBT_DEBUG("send finalize to receiver/ctrl");
+ task = MSG_task_create("finalize", 0.0, 0, NULL);
+ MSG_task_send(task, host->get_ctrl_mbox());
- flush_sent();
- if (!sent_comm.empty())
- WARN1("Lost %ld send communications!", (long )sent_comm.size());
-}
+ XBT_DEBUG("send finalize to receiver/data");
+ task = MSG_task_create("finalize", 0.0, 0, NULL);
+ MSG_task_send(task, host->get_data_mbox());
-void communicator::send_info(const neighbor& dest, double amount)
-{
- message* msg = new message(INFO_MSG, amount);
- m_task_t task = MSG_task_create("load msg", 0.0, sizeof *msg, msg);
- send(dest.get_ctrl_mbox(), task);
-}
+ receiver_thread->wait();
+ delete receiver_thread;
-void communicator::send_credit(const neighbor& dest, double amount)
-{
- message* msg = new message(CREDIT_MSG, amount);
- m_task_t task = MSG_task_create("credit msg", 0.0, sizeof *msg, msg);
- send(dest.get_ctrl_mbox(), task);
+ check_for_lost_messages(ctrl_received.size(), "received ctrl");
+ check_for_lost_messages(data_received.size(), "received data");
+ check_for_lost_messages(ctrl_sent.size(), "sent ctrl");
+ check_for_lost_messages(data_sent.size(), "sent data");
}
-void communicator::send_load(const neighbor& dest, double amount)
+msg_comm_t communicator::real_send(const char* dest, message* msg)
{
- m_task_t task = MSG_task_create("data msg", 0.0, amount, NULL);
- send(dest.get_data_mbox(), task);
+ XBT_DEBUG("send %s to %s", msg->to_string().c_str(), dest);
+ msg_task_t task = MSG_task_create("message", 0.0, msg->get_size(), msg);
+ // MSG_task_set_category(task,
+ // msg->get_type() == message::DATA ?
+ // TRACE_CAT_DATA : TRACE_CAT_CTRL);
+ return MSG_task_isend(task, dest);
}
-void communicator::send(const char* dest, m_task_t task)
+void communicator::real_flush(sent_comm_type& sent_comm, bool wait)
{
- sent_comm.push_back(MSG_task_isend(task, dest));
- flush_sent();
+ sent_comm_type::iterator bound =
+ std::remove_if(sent_comm.begin(), sent_comm.end(),
+ comm_test_n_destroy);
+ sent_comm.erase(bound, sent_comm.end());
+ if (wait && !sent_comm.empty()) {
+ size_t size = sent_comm.size();
+ msg_comm_t* comms = new msg_comm_t[size];
+ std::copy(sent_comm.begin(), sent_comm.end(), comms);
+ sent_comm.clear();
+ MSG_comm_waitall(comms, size, -1.0);
+ std::for_each(comms, comms + size, comm_check_n_destroy);
+ delete[] comms;
+ }
}
-bool communicator::recv_info(double& amount, m_host_t& from)
+void communicator::receiver()
{
- return recv_ctrl(INFO_MSG, amount, from);
-}
+ xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
+ struct channel {
+ msg_comm_t comm;
+ msg_task_t task;
+ const char* mbox;
+ message_queue& received;
+ };
+ channel chan[] = { { NULL, NULL, host->get_ctrl_mbox(), ctrl_received },
+ { NULL, NULL, host->get_data_mbox(), data_received } };
+ const int chan_size = (sizeof chan) / (sizeof chan[0]);
+
+ for (int i = 0 ; i < chan_size ; ++i) {
+ chan[i].comm = MSG_task_irecv(&chan[i].task, chan[i].mbox);
+ xbt_dynar_push(comms, &chan[i].comm);
+ }
-bool communicator::recv_credit(double& amount, m_host_t& from)
-{
- return recv_ctrl(CREDIT_MSG, amount, from);
-}
+ while (!xbt_dynar_is_empty(comms)) {
-bool communicator::recv_load(double& amount, m_host_t& from)
-{
- bool res = comm_test_n_destroy(data_comm);
- if (res) {
- amount = MSG_task_get_data_size(data_task);
- from = MSG_task_get_source(data_task);
- MSG_task_destroy(data_task);
- data_task = NULL;
- data_comm = MSG_task_irecv(&data_task, data_mbox);
- }
- return res;
-}
+ int index = MSG_comm_waitany(comms);
+ msg_comm_t finished_comm = xbt_dynar_get_as(comms, index, msg_comm_t);
+ channel* ch;
-bool communicator::recv_ctrl(message_type type, double& amount, m_host_t& from)
-{
- bool res = MSG_comm_test(ctrl_comm);
- if (res) {
- message* msg = (message* )MSG_task_get_data(ctrl_task);
- if (msg->type == type) {
- MSG_comm_destroy(ctrl_comm);
- amount = msg->amount;
- from = MSG_task_get_source(ctrl_task);
- delete msg;
- MSG_task_destroy(ctrl_task);
- ctrl_task = NULL;
- ctrl_comm = MSG_task_irecv(&ctrl_task, ctrl_mbox);
+ for (ch = chan ; ch->comm != finished_comm ; ++ch)
+ /* nop */;
+
+ comm_check_n_destroy(ch->comm);
+ if (strcmp(MSG_task_get_name(ch->task), "finalize")) {
+ XBT_DEBUG("received message on %s", ch->mbox);
+ ch->received.push(ch->task);
+ ch->task = NULL;
+ ch->comm = MSG_task_irecv(&ch->task, ch->mbox);
+ xbt_dynar_set_as(comms, index, msg_comm_t, ch->comm);
} else {
- res = false;
+ XBT_DEBUG("received finalize on %s", ch->mbox);
+ MSG_task_destroy(ch->task);
+ ch->task = NULL;
+ ch->comm = NULL;
+ xbt_dynar_remove_at(comms, index, NULL);
}
+
}
- return res;
+ xbt_dynar_free(&comms);
}
-int communicator::send_backlog()
+void communicator::comm_check_n_destroy(msg_comm_t comm)
{
- flush_sent();
- return sent_comm.size();
+ xbt_assert(MSG_comm_get_status(comm) == MSG_OK);
+ MSG_comm_destroy(comm);
}
-void communicator::flush_sent()
+bool communicator::comm_test_n_destroy(msg_comm_t comm)
{
- std::remove_if(sent_comm.begin(), sent_comm.end(), comm_test_n_destroy);
+ if (MSG_comm_test(comm)) {
+ comm_check_n_destroy(comm);
+ return true;
+ } else
+ return false;
}
// Local variables:
