X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/dbc9221771e3158336126009aff945e86acca5da..4ed2ded99f037e413c9008a324c85f8f95611bb5:/communicator.cpp?ds=inline diff --git a/communicator.cpp b/communicator.cpp index f3e6bf9..1bf16cd 100644 --- a/communicator.cpp +++ b/communicator.cpp @@ -1,4 +1,5 @@ #include +#include #include #include #include @@ -8,6 +9,8 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm); #include "misc.h" #include "options.h" +#include "simgrid_features.h" +#include "tracing.h" #include "communicator.h" @@ -20,133 +23,200 @@ std::string message::to_string() return oss.str(); } -const int communicator::send_count_before_flush = 4; - communicator::communicator() - : host((hostdata* )MSG_host_get_data(MSG_host_self())) - , send_counter(0) + : host(static_cast(MSG_host_get_data(MSG_host_self()))) , ctrl_task(NULL) , ctrl_comm(NULL) - , ctrl_close_is_last(false) , data_task(NULL) , data_comm(NULL) - , data_close_is_last(false) + , 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); } communicator::~communicator() { + m_task_t task; + + XBT_DEBUG("send finalize to receiver/ctrl"); + task = MSG_task_create("finalize", 0.0, 0, NULL); + MSG_task_send(task, get_ctrl_mbox()); + + XBT_DEBUG("send finalize to receiver/data"); + task = MSG_task_create("finalize", 0.0, 0, NULL); + MSG_task_send(task, 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 (ctrl_comm) - WARN0("ctrl_comm is pending!"); + XBT_WARN("ctrl_comm is pending!"); if (data_comm) - WARN0("data_comm is pending!"); + XBT_WARN("data_comm is pending!"); + if (!received.empty()) + XBT_WARN("lost %zu received message%s!", + received.size(), ESSE(received.size())); if (!sent_comm.empty()) - WARN2("lost %ld send communication%s!", - (long )sent_comm.size(), ESSE(sent_comm.size())); -} + XBT_WARN("lost %zu sent message%s!", + sent_comm.size(), ESSE(sent_comm.size())); -void communicator::listen() -{ - ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox()); - data_comm = MSG_task_irecv(&data_task, get_data_mbox()); + xbt_cond_destroy(receiver_cond); + xbt_mutex_destroy(receiver_mutex); } void communicator::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()); m_task_t task = MSG_task_create("message", 0.0, msg_size, 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); - - if (++send_counter >= send_count_before_flush) { - flush(false); - send_counter = 0; - } } -bool communicator::recv(message*& msg, m_host_t& from, bool wait) +bool communicator::recv(message*& msg, m_host_t& from, double timeout) { - bool restart; - msg = NULL; - - do { - if (ctrl_comm && 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 = - (!ctrl_close_is_last || msg->get_type() != message::CTRL_CLOSE) - ? MSG_task_irecv(&ctrl_task, get_ctrl_mbox()) - : NULL; - - } else if (data_comm && 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 = - (!data_close_is_last || msg->get_type() != message::DATA_CLOSE) - ? MSG_task_irecv(&data_task, get_data_mbox()) - : NULL; + 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); + } - restart = wait && !msg && (ctrl_comm || data_comm); - if (restart) { - xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL); - if (ctrl_comm) - xbt_dynar_push(comms, &ctrl_comm); - if (data_comm) - xbt_dynar_push(comms, &data_comm); - MSG_comm_waitany(comms); - xbt_dynar_free(&comms); - } - } while (restart); + if (received.empty()) + return false; - if (msg) - DEBUG2("received %s from %s", - msg->to_string().c_str(), MSG_host_get_name(from)); + 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); - return msg != NULL; + XBT_DEBUG("received %s from %s", + msg->to_string().c_str(), MSG_host_get_name(from)); + + return true; } void communicator::flush(bool wait) { - using std::tr1::bind; - using std::tr1::placeholders::_1; - sent_comm.remove_if(comm_test_n_destroy); if (wait && !sent_comm.empty()) { - xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL); - while (!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(), - bind(xbt_dynar_push, - comms, bind(misc::address(), _1))); - MSG_comm_waitany(comms); - xbt_dynar_reset(comms); - sent_comm.remove_if(comm_test_n_destroy); - } - xbt_dynar_free(&comms); + comm_check_n_destroy); + sent_comm.clear(); } } -void communicator::next_close_on_ctrl_is_last() +int communicator::receiver_wrapper(int, char* []) +{ + communicator* comm; + comm = static_cast(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::receiver1(msg_comm_t& comm, m_task_t& task, const char* mbox) { - ctrl_close_is_last = true; + comm_check_n_destroy(comm); + if (strcmp(MSG_task_get_name(task), "finalize")) { + XBT_DEBUG("received message on %s", mbox); + xbt_mutex_acquire(receiver_mutex); + received.push(task); + xbt_cond_signal(receiver_cond); + xbt_mutex_release(receiver_mutex); + task = NULL; + comm = MSG_task_irecv(&task, mbox); + } else { + XBT_DEBUG("received finalize on %s", mbox); + MSG_task_destroy(task); + task = NULL; + comm = NULL; + } +} + +void communicator::receiver() +{ + ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox()); + data_comm = MSG_task_irecv(&data_task, get_data_mbox()); + 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); + + 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); + int index = MSG_comm_waitany(comms); + msg_comm_t finished_comm = xbt_dynar_get_as(comms, index, msg_comm_t); + xbt_dynar_reset(comms); + + if (finished_comm == ctrl_comm) + receiver1(ctrl_comm, ctrl_task, get_ctrl_mbox()); + else if (finished_comm == data_comm) + receiver1(data_comm, data_task, get_data_mbox()); + else + THROW1(0, 0, "Cannot handle unknown comm -- %p", finished_comm); + } + xbt_dynar_free(&comms); } -void communicator::next_close_on_data_is_last() +void communicator::comm_check_n_destroy(msg_comm_t comm) { - data_close_is_last = true; + 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;