#include <algorithm>
-#include <cstring>
#include <tr1/functional>
-#include <sstream>
#include <msg/msg.h>
#include <xbt/log.h>
#include "communicator.h"
-std::string message::to_string()
-{
- static const char* str[] = { "INFO", "CREDIT", "LOAD",
- "CTRL_CLOSE", "DATA_CLOSE" };
- std::ostringstream oss;
- oss << str[type] << ": " << amount;
- return oss.str();
+namespace {
+
+ void check_for_lost_messages(size_t size, const char* descr)
+ {
+ if (size)
+ XBT_WARN("lost %zu %s message%s!", size, descr, ESSE(size));
+ }
+
}
communicator::communicator()
: host(static_cast<hostdata*>(MSG_host_get_data(MSG_host_self())))
- , receiver_mutex(xbt_mutex_init())
- , receiver_cond(xbt_cond_init())
{
- xbt_mutex_acquire(receiver_mutex);
- receiver_thread =
- MSG_process_create("receiver", communicator::receiver_wrapper,
- this, MSG_host_self());
- // wait for the receiver to be ready
- xbt_cond_wait(receiver_cond, receiver_mutex);
- xbt_mutex_release(receiver_mutex);
+ using std::tr1::bind;
+ receiver_thread = new_msg_thread("receiver",
+ bind(&communicator::receiver, this));
+ receiver_thread->start();
}
communicator::~communicator()
task = MSG_task_create("finalize", 0.0, 0, NULL);
MSG_task_send(task, host->get_data_mbox());
- xbt_mutex_acquire(receiver_mutex);
- while (receiver_thread) {
- XBT_DEBUG("waiting for receiver to terminate");
- xbt_cond_wait(receiver_cond, receiver_mutex);
- }
- xbt_mutex_release(receiver_mutex);
-
- if (!received.empty())
- XBT_WARN("lost %zu received message%s!",
- received.size(), ESSE(received.size()));
- if (!sent_comm.empty())
- XBT_WARN("lost %zu sent message%s!",
- sent_comm.size(), ESSE(sent_comm.size()));
+ receiver_thread->wait();
+ delete receiver_thread;
- xbt_cond_destroy(receiver_cond);
- xbt_mutex_destroy(receiver_mutex);
+ 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(const char* dest, message* msg)
+msg_comm_t communicator::real_send(const char* dest, message* msg)
{
XBT_DEBUG("send %s to %s", msg->to_string().c_str(), dest);
double msg_size = sizeof *msg;
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, double timeout)
-{
- if (timeout != 0) {
- volatile double deadline =
- timeout > 0 ? MSG_get_clock() + timeout : 0.0;
- xbt_mutex_acquire(receiver_mutex);
- while (received.empty() && (!deadline || deadline > MSG_get_clock())) {
- xbt_ex_t e;
- XBT_DEBUG("waiting for a message to come");
- TRY {
- if (deadline)
- xbt_cond_timedwait(receiver_cond, receiver_mutex,
- deadline - MSG_get_clock());
- else
- xbt_cond_wait(receiver_cond, receiver_mutex);
- }
- CATCH (e) {
- if (e.category != timeout_error)
- RETHROW;
- xbt_ex_free(e);
- }
- }
- xbt_mutex_release(receiver_mutex);
- }
-
- if (received.empty())
- return false;
-
- m_task_t task = received.front();
- received.pop();
- msg = static_cast<message*>(MSG_task_get_data(task));
- from = MSG_task_get_source(task);
- MSG_task_destroy(task);
-
- XBT_DEBUG("received %s from %s",
- msg->to_string().c_str(), MSG_host_get_name(from));
-
- return true;
+ return MSG_task_isend(task, dest);
}
-void communicator::flush(bool wait)
+void communicator::real_flush(sent_comm_type& sent_comm, bool wait)
{
- sent_comm.remove_if(comm_test_n_destroy);
+ sent_comm_type::iterator bound;
+ 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()) {
- msg_comm_t comms[sent_comm.size()];
+ size_t size = sent_comm.size();
+ msg_comm_t* comms = new msg_comm_t[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();
+ MSG_comm_waitall(comms, size, -1.0);
+ if (!MSG_WAIT_DESTROYS_COMMS)
+ std::for_each(comms, comms + size, comm_check_n_destroy);
+ delete[] comms;
}
}
-int communicator::receiver_wrapper(int, char* [])
-{
- communicator* comm;
- comm = static_cast<communicator*>(MSG_process_get_data(MSG_process_self()));
- comm->receiver();
-
- XBT_DEBUG("terminate");
- xbt_mutex_acquire(comm->receiver_mutex);
- comm->receiver_thread = NULL;
- xbt_cond_signal(comm->receiver_cond);
- xbt_mutex_release(comm->receiver_mutex);
-
- return 0;
-}
-
void communicator::receiver()
{
xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
msg_comm_t comm;
m_task_t task;
const char* mbox;
+ message_queue& received;
};
- channel chan[] = { { NULL, NULL, host->get_ctrl_mbox() },
- { NULL, NULL, host->get_data_mbox() } };
+ 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) {
xbt_dynar_push(comms, &chan[i].comm);
}
- XBT_DEBUG("receiver ready");
- xbt_mutex_acquire(receiver_mutex);
- xbt_cond_signal(receiver_cond); // signal master that we are ready
- xbt_mutex_release(receiver_mutex);
-
while (!xbt_dynar_is_empty(comms)) {
int index = MSG_comm_waitany(comms);
comm_check_n_destroy(ch->comm);
if (strcmp(MSG_task_get_name(ch->task), "finalize")) {
XBT_DEBUG("received message on %s", ch->mbox);
- xbt_mutex_acquire(receiver_mutex);
- received.push(ch->task);
- xbt_cond_signal(receiver_cond);
- xbt_mutex_release(receiver_mutex);
+ 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);
