X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/0c4a3402a57c61218bf1d1c6d8c31f5c3e1482f9..51f707d60785283c582c16c141ab6832a744dd3a:/communicator.cpp diff --git a/communicator.cpp b/communicator.cpp index 1570b10..90cf990 100644 --- a/communicator.cpp +++ b/communicator.cpp @@ -1,4 +1,5 @@ #include +#include #include #include #include @@ -20,35 +21,55 @@ 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) + , mutex(xbt_mutex_init()) + , cond(xbt_cond_init()) , ctrl_task(NULL) , ctrl_comm(NULL) - , ctrl_close_is_last(false) , data_task(NULL) , data_comm(NULL) - , data_close_is_last(false) { + 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())); -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(cond); + xbt_mutex_destroy(mutex); } void communicator::send(const char* dest, message* msg) @@ -60,63 +81,51 @@ void communicator::send(const char* dest, message* msg) 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); - - 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(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); + } - 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; + + 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); - if (msg) - DEBUG2("received %s from %s", - msg->to_string().c_str(), MSG_host_get_name(from)); + DEBUG2("received %s from %s", + msg->to_string().c_str(), MSG_host_get_name(from)); - return msg != NULL; + return true; } void communicator::flush(bool wait) { - using namespace std::tr1; - using namespace std::tr1::placeholders; + using std::tr1::bind; + using std::tr1::placeholders::_1; sent_comm.remove_if(comm_test_n_destroy); if (wait && !sent_comm.empty()) { @@ -133,16 +142,6 @@ void communicator::flush(bool wait) } } -void communicator::next_close_on_ctrl_is_last() -{ - ctrl_close_is_last = true; -} - -void communicator::next_close_on_data_is_last() -{ - data_close_is_last = true; -} - bool communicator::comm_test_n_destroy(msg_comm_t comm) { if (MSG_comm_test(comm)) { @@ -152,6 +151,80 @@ bool communicator::comm_test_n_destroy(msg_comm_t comm) return false; } +int communicator::receiver_wrapper(int, char* []) +{ + 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; +} + +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: