X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/d4fbe175e440c3e9de9b5468b85bf56daab62bff..88ba6cd5952a9a7a58a8a0d9c5ae0691a1fdc5e1:/communicator.cpp diff --git a/communicator.cpp b/communicator.cpp index e30d731..ecb207a 100644 --- a/communicator.cpp +++ b/communicator.cpp @@ -1,7 +1,5 @@ #include -#include #include -#include #include #include @@ -14,69 +12,49 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm); #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(MSG_host_get_data(MSG_host_self()))) - , mutex(xbt_mutex_init()) - , cond(xbt_cond_init()) - , ctrl_task(NULL) - , ctrl_comm(NULL) - , data_task(NULL) - , data_comm(NULL) { - xbt_mutex_acquire(mutex); - receiver_process = - MSG_process_create("receiver", communicator::receiver_wrapper, - this, MSG_host_self()); - xbt_cond_wait(cond, mutex); // wait for the receiver to be ready - xbt_mutex_release(mutex); + using std::tr1::bind; + receiver_thread = new_msg_thread("receiver", + bind(&communicator::receiver, this)); + receiver_thread->start(); } communicator::~communicator() { m_task_t task; - DEBUG0("send finalize to receiver/ctrl"); + XBT_DEBUG("send finalize to receiver/ctrl"); task = MSG_task_create("finalize", 0.0, 0, NULL); - MSG_task_send(task, get_ctrl_mbox()); + MSG_task_send(task, host->get_ctrl_mbox()); - DEBUG0("send finalize to receiver/data"); + XBT_DEBUG("send finalize to receiver/data"); task = MSG_task_create("finalize", 0.0, 0, NULL); - MSG_task_send(task, get_data_mbox()); + MSG_task_send(task, host->get_data_mbox()); - xbt_mutex_acquire(mutex); - while (receiver_process) { - DEBUG0("waiting for receiver to terminate"); - xbt_cond_wait(cond, mutex); - } - xbt_mutex_release(mutex); - - if (ctrl_comm) - WARN0("ctrl_comm is pending!"); - if (data_comm) - WARN0("data_comm is pending!"); - if (!received.empty()) - WARN2("lost %lu received message%s!", - (unsigned long )received.size(), ESSE(received.size())); - if (!sent_comm.empty()) - WARN2("lost %lu sent message%s!", - (unsigned long )sent_comm.size(), ESSE(sent_comm.size())); - - xbt_cond_destroy(cond); - xbt_mutex_destroy(mutex); + receiver_thread->wait(); + delete receiver_thread; + + 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) { - DEBUG2("send %s to %s", msg->to_string().c_str(), dest); + 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 += opt::comm_cost(msg->get_amount()); @@ -84,145 +62,88 @@ void communicator::send(const char* dest, message* 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); + return MSG_task_isend(task, dest); } -bool communicator::recv(message*& msg, m_host_t& from, double timeout) +void communicator::real_flush(sent_comm_type& sent_comm, bool wait) { - if (timeout != 0) { - volatile double deadline = - timeout > 0 ? MSG_get_clock() + timeout : 0.0; - xbt_mutex_acquire(mutex); - while (received.empty() && (!deadline || deadline > MSG_get_clock())) { - xbt_ex_t e; - DEBUG0("waiting for a message to come"); - TRY { - if (deadline) - xbt_cond_timedwait(cond, mutex, deadline - MSG_get_clock()); - else - xbt_cond_wait(cond, mutex); - } - CATCH (e) { - if (e.category != timeout_error) - RETHROW; - xbt_ex_free(e); - } - } - xbt_mutex_release(mutex); + 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()) { + 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); + if (!MSG_WAIT_DESTROYS_COMMS) + std::for_each(comms, comms + size, comm_check_n_destroy); + delete[] comms; } +} - if (received.empty()) - return false; - - m_task_t task = received.front(); - received.pop(); - msg = static_cast(MSG_task_get_data(task)); - from = MSG_task_get_source(task); - MSG_task_destroy(task); +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; + 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); + } - DEBUG2("received %s from %s", - msg->to_string().c_str(), MSG_host_get_name(from)); + 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); + 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 { + 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 true; + } + xbt_dynar_free(&comms); } -void communicator::flush(bool wait) +void communicator::comm_check_n_destroy(msg_comm_t comm) { - 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(), MSG_comm_destroy); - sent_comm.clear(); - } + xbt_assert(MSG_comm_get_status(comm) == MSG_OK); + MSG_comm_destroy(comm); } bool communicator::comm_test_n_destroy(msg_comm_t comm) { if (MSG_comm_test(comm)) { - MSG_comm_destroy(comm); + comm_check_n_destroy(comm); return true; } else return false; } -int communicator::receiver_wrapper(int, char* []) -{ - communicator* comm; - comm = static_cast(MSG_process_get_data(MSG_process_self())); - int result = comm->receiver(); - - DEBUG0("terminate"); - xbt_mutex_acquire(comm->mutex); - comm->receiver_process = NULL; - xbt_cond_signal(comm->cond); - xbt_mutex_release(comm->mutex); - - return result; -} - -int communicator::receiver() -{ - ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox()); - data_comm = MSG_task_irecv(&data_task, get_data_mbox()); - DEBUG0("receiver ready"); - xbt_mutex_acquire(mutex); - xbt_cond_signal(cond); // signal master that we are ready - xbt_mutex_release(mutex); - - xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL); - while (ctrl_comm || data_comm) { - - if (ctrl_comm) - xbt_dynar_push(comms, &ctrl_comm); - if (data_comm) - xbt_dynar_push(comms, &data_comm); - MSG_comm_waitany(comms); - xbt_dynar_reset(comms); - - if (ctrl_comm && comm_test_n_destroy(ctrl_comm)) { - if (strcmp(MSG_task_get_name(ctrl_task), "finalize")) { - DEBUG0("received message from ctrl"); - xbt_mutex_acquire(mutex); - received.push(ctrl_task); - xbt_mutex_release(mutex); - ctrl_task = NULL; - ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox()); - } else { - DEBUG0("received finalize from ctrl"); - MSG_task_destroy(ctrl_task); - ctrl_task = NULL; - ctrl_comm = NULL; - } - } - - if (data_comm && comm_test_n_destroy(data_comm)) { - if (strcmp(MSG_task_get_name(data_task), "finalize")) { - DEBUG0("received message from data"); - xbt_mutex_acquire(mutex); - received.push(data_task); - xbt_mutex_release(mutex); - data_task = NULL; - data_comm = MSG_task_irecv(&data_task, get_data_mbox()); - } else { - DEBUG0("received finalize from data"); - MSG_task_destroy(data_task); - data_task = NULL; - data_comm = NULL; - } - } - xbt_mutex_acquire(mutex); - if (!received.empty()) - xbt_cond_signal(cond); - xbt_mutex_release(mutex); - } - xbt_dynar_free(&comms); - return 0; -} - // Local variables: // mode: c++ // End: