X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/147d0e88c4da14c801d15e0875bedb474180bea2..32c86752c4672917e960399b7420d3bebd3844d7:/communicator.cpp diff --git a/communicator.cpp b/communicator.cpp index 0d724aa..90cf990 100644 --- a/communicator.cpp +++ b/communicator.cpp @@ -1,74 +1,228 @@ #include #include +#include +#include #include #include + +XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm); + +#include "misc.h" +#include "options.h" + #include "communicator.h" -// XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu); -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(comm, simu, - "Messages from asynchronous pipes"); - -namespace { - bool comm_test_n_destroy(msg_comm_t& comm) - { - if (MSG_comm_test(comm)) { - MSG_comm_destroy(comm); - return true; - } else - return false; - } +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(); } communicator::communicator() + : host((hostdata* )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) { - const char* hostname = MSG_host_get_name(MSG_host_self()); - size_t len = std::strlen(hostname); - recv_mbox = new char[len + 1]; - strcpy(recv_mbox, hostname); - recv_task = NULL; - recv_comm = MSG_task_irecv(&recv_task, recv_mbox); + 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() { - send_acknowledge(); + 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()) - WARN1("Lost %ld send communications!", (long )sent_comm.size()); - delete[] recv_mbox; -} + 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(m_task_t task, const char *dest) +void communicator::send(const char* dest, message* msg) { - sent_comm.push_back(MSG_task_isend(task, dest)); - send_acknowledge(); + DEBUG2("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); + msg_comm_t comm = MSG_task_isend(task, dest); + sent_comm.push_back(comm); } -void communicator::send(m_task_t task, const std::string& dest) +bool communicator::recv(message*& msg, m_host_t& from, double timeout) { - send(task, dest.c_str()); + 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); + } + + if (received.empty()) + return false; + + m_task_t task = received.front(); + received.pop(); + msg = (message* )MSG_task_get_data(task); + from = MSG_task_get_source(task); + MSG_task_destroy(task); + + DEBUG2("received %s from %s", + msg->to_string().c_str(), MSG_host_get_name(from)); + + return true; } -m_task_t communicator::recv() +void communicator::flush(bool wait) { - m_task_t task = NULL; - if (comm_test_n_destroy(recv_comm)) { - task = recv_task; - recv_task = NULL; - recv_comm = MSG_task_irecv(&recv_task, recv_mbox); + 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()) { + 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); } - return task; } -int communicator::sent_count() +bool communicator::comm_test_n_destroy(msg_comm_t comm) +{ + if (MSG_comm_test(comm)) { + MSG_comm_destroy(comm); + return true; + } else + return false; +} + +int communicator::receiver_wrapper(int, char* []) { - send_acknowledge(); - return sent_comm.size(); + communicator* comm; + comm = (communicator* )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; } -void communicator::send_acknowledge() +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: