#include <algorithm>
-#include <cstring>
#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);
-namespace {
-
- bool comm_test_n_destroy(msg_comm_t& comm)
- {
- if (MSG_comm_test(comm)) {
- MSG_comm_destroy(comm);
- return true;
- } else
- return false;
- }
+#include "misc.h"
+#include "options.h"
+#include "simgrid_features.h"
+#include "tracing.h"
-}
+#include "communicator.h"
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 = hostname;
- ctrl_mbox += "_ctrl";
- ctrl_task = NULL;
- ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox());
-
- data_mbox = hostname;
- data_mbox += "_data";
- data_task = NULL;
- data_comm = MSG_task_irecv(&data_task, get_data_mbox());
+ receiver_mutex.acquire();
+ receiver_thread =
+ MSG_process_create("receiver", communicator::receiver_wrapper,
+ this, MSG_host_self());
+ receiver_cond.wait(receiver_mutex); // wait for the receiver to be ready
+ receiver_mutex.release();
}
communicator::~communicator()
{
- // fixme: don't know how to free pending communications
- // (data_comm, ctrl_comm and sent_comm)
+ m_task_t task;
- flush_sent();
+ XBT_DEBUG("send finalize to receiver/ctrl");
+ task = MSG_task_create("finalize", 0.0, 0, NULL);
+ MSG_task_send(task, host->get_ctrl_mbox());
+
+ XBT_DEBUG("send finalize to receiver/data");
+ task = MSG_task_create("finalize", 0.0, 0, NULL);
+ MSG_task_send(task, host->get_data_mbox());
+
+ receiver_mutex.acquire();
+ while (receiver_thread) {
+ XBT_DEBUG("waiting for receiver to terminate");
+ receiver_cond.wait(receiver_mutex);
+ }
+ receiver_mutex.release();
+
+ if (!received.empty())
+ XBT_WARN("lost %zu received message%s!",
+ received.size(), ESSE(received.size()));
if (!sent_comm.empty())
- WARN1("Lost %ld send communications!", (long )sent_comm.size());
+ XBT_WARN("lost %zu sent message%s!",
+ sent_comm.size(), ESSE(sent_comm.size()));
}
void communicator::send(const char* dest, message* msg)
{
+ XBT_DEBUG("send %s to %s", msg->to_string().c_str(), dest);
double msg_size = sizeof *msg;
if (msg->get_type() == message::LOAD)
- msg_size += msg->get_amount();
+ msg_size += opt::comm_cost(msg->get_amount());
m_task_t task = MSG_task_create("message", 0.0, msg_size, msg);
- sent_comm.push_back(MSG_task_isend(task, dest));
- flush_sent();
+ TRACE_msg_set_task_category(task,
+ msg->get_type() == message::LOAD ?
+ TRACE_CAT_DATA : TRACE_CAT_CTRL);
+ msg_comm_t comm = MSG_task_isend(task, dest);
+ sent_comm.push_back(comm);
}
-bool communicator::recv(message*& msg, m_host_t& from)
+void communicator::flush(bool wait)
{
- msg = NULL;
-
- if (comm_test_n_destroy(ctrl_comm)) {
- msg = (message* )MSG_task_get_data(ctrl_task);
- from = MSG_task_get_source(ctrl_task);
- MSG_task_destroy(ctrl_task);
- ctrl_task = NULL;
- ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox());
-
- } else if (comm_test_n_destroy(data_comm)) {
- msg = (message* )MSG_task_get_data(data_task);
- from = MSG_task_get_source(data_task);
- MSG_task_destroy(data_task);
- data_task = NULL;
- data_comm = MSG_task_irecv(&data_task, get_data_mbox());
+ sent_comm.remove_if(comm_test_n_destroy);
+ if (wait && !sent_comm.empty()) {
+ msg_comm_t comms[sent_comm.size()];
+ std::copy(sent_comm.begin(), sent_comm.end(), comms);
+ MSG_comm_waitall(comms, sent_comm.size(), -1.0);
+ if (!MSG_WAIT_DESTROYS_COMMS)
+ std::for_each(sent_comm.begin(), sent_comm.end(),
+ comm_check_n_destroy);
+ sent_comm.clear();
}
+}
- return msg != NULL;
+bool communicator::recv(message*& msg, m_host_t& from, double timeout)
+{
+ XBT_DEBUG("waiting for a message to come");
+ bool recvd = received.pop(msg, from, timeout);
+ if (recvd)
+ XBT_DEBUG("received %s from %s",
+ msg->to_string().c_str(), MSG_host_get_name(from));
+ return recvd;
+}
+
+int communicator::receiver_wrapper(int, char* [])
+{
+ communicator* comm;
+ comm = static_cast<communicator*>(MSG_process_get_data(MSG_process_self()));
+ comm->receiver();
+
+ XBT_DEBUG("terminate");
+ comm->receiver_mutex.acquire();
+ comm->receiver_thread = NULL;
+ comm->receiver_cond.signal();
+ comm->receiver_mutex.release();
+
+ return 0;
+}
+
+void communicator::receiver()
+{
+ xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
+ struct channel {
+ msg_comm_t comm;
+ m_task_t task;
+ const char* mbox;
+ };
+ channel chan[] = { { NULL, NULL, host->get_ctrl_mbox() },
+ { NULL, NULL, host->get_data_mbox() } };
+ 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);
+ }
+
+ XBT_DEBUG("receiver ready");
+ receiver_mutex.acquire();
+ receiver_cond.signal(); // signal master that we are ready
+ receiver_mutex.release();
+
+ while (!xbt_dynar_is_empty(comms)) {
+
+ int index = MSG_comm_waitany(comms);
+ msg_comm_t finished_comm = xbt_dynar_get_as(comms, index, msg_comm_t);
+ channel* ch;
+
+ 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);
+ 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 {
+ 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);
+ }
+
+ }
+ 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:
