X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/fc5dcac1115a7112e7ad9d67ce7fe233790e0887..2e3129cd655efb5ccfa93000546cefd02b725154:/communicator.cpp diff --git a/communicator.cpp b/communicator.cpp index 45b52ef..e30d731 100644 --- a/communicator.cpp +++ b/communicator.cpp @@ -1,127 +1,146 @@ #include -#include #include +#include +#include #include #include -#include "communicator.h" -#include "simgrid_features.h" + +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm); + #include "misc.h" +#include "options.h" +#include "simgrid_features.h" +#include "tracing.h" -// XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu); -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(comm, simu, - "Messages from asynchronous pipes"); +#include "communicator.h" -communicator::communicator() +std::string message::to_string() { - 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()); - ctrl_close_is_last = false; + static const char* str[] = { "INFO", "CREDIT", "LOAD", + "CTRL_CLOSE", "DATA_CLOSE" }; + std::ostringstream oss; + oss << str[type] << ": " << amount; + return oss.str(); +} - data_mbox = hostname; - data_mbox += "_data"; - data_task = NULL; - data_comm = MSG_task_irecv(&data_task, get_data_mbox()); - data_close_is_last = false; +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); } communicator::~communicator() { + m_task_t task; + + DEBUG0("send finalize to receiver/ctrl"); + task = MSG_task_create("finalize", 0.0, 0, NULL); + MSG_task_send(task, get_ctrl_mbox()); + + DEBUG0("send finalize to receiver/data"); + task = MSG_task_create("finalize", 0.0, 0, NULL); + MSG_task_send(task, 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 %ld send communication%s!", - (long )sent_comm.size(), ESSE(sent_comm.size())); + WARN2("lost %lu sent message%s!", + (unsigned long )sent_comm.size(), ESSE(sent_comm.size())); + + xbt_cond_destroy(cond); + xbt_mutex_destroy(mutex); } void communicator::send(const char* dest, message* msg) { + DEBUG2("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, 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) - ? ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox()) - : ctrl_comm = 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) - ? data_comm = MSG_task_irecv(&data_task, get_data_mbox()) - : data_comm = NULL; - } - - 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); + 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); + } } - } while (restart); + xbt_mutex_release(mutex); + } - return msg != NULL; -} + if (received.empty()) + return false; -void communicator::wait_for_sent() -{ - xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL); - while (!sent_comm.empty()) { - std::for_each(sent_comm.begin(), sent_comm.end(), - std::tr1::bind(xbt_dynar_push, - comms, std::tr1::placeholders::_1)); - MSG_comm_waitany(comms); - xbt_dynar_reset(comms); - flush_sent(); - } - xbt_dynar_free(&comms); -} + 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::next_close_on_ctrl_is_last() -{ - ctrl_close_is_last = true; -} + DEBUG2("received %s from %s", + msg->to_string().c_str(), MSG_host_get_name(from)); -void communicator::next_close_on_data_is_last() -{ - data_close_is_last = true; + return true; } -int communicator::send_backlog() +void communicator::flush(bool wait) { - flush_sent(); - return sent_comm.size(); + 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(); + } } -bool communicator::comm_test_n_destroy(msg_comm_t& comm) +bool communicator::comm_test_n_destroy(msg_comm_t comm) { if (MSG_comm_test(comm)) { MSG_comm_destroy(comm); @@ -130,9 +149,78 @@ bool communicator::comm_test_n_destroy(msg_comm_t& comm) return false; } -void communicator::flush_sent() +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() { - std::remove_if(sent_comm.begin(), sent_comm.end(), comm_test_n_destroy); + 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: