X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/9d8b4da8a4727dbaaad640bd72136cf03614c637..bf6f3239b1c6f8b6704bfd0474b721e803dce588:/communicator.cpp diff --git a/communicator.cpp b/communicator.cpp index 6570b01..e30d731 100644 --- a/communicator.cpp +++ b/communicator.cpp @@ -9,6 +9,8 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm); #include "misc.h" #include "options.h" +#include "simgrid_features.h" +#include "tracing.h" #include "communicator.h" @@ -21,13 +23,10 @@ std::string message::to_string() return oss.str(); } -int communicator::send_count_before_flush = 4; - communicator::communicator() - : host((hostdata* )MSG_host_get_data(MSG_host_self())) + : host(static_cast(MSG_host_get_data(MSG_host_self()))) , mutex(xbt_mutex_init()) , cond(xbt_cond_init()) - , send_counter(0) , ctrl_task(NULL) , ctrl_comm(NULL) , data_task(NULL) @@ -37,6 +36,7 @@ communicator::communicator() 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); } @@ -52,10 +52,11 @@ communicator::~communicator() task = MSG_task_create("finalize", 0.0, 0, NULL); MSG_task_send(task, get_data_mbox()); - DEBUG0("wait for receiver to terminate"); xbt_mutex_acquire(mutex); - while (receiver_process) + while (receiver_process) { + DEBUG0("waiting for receiver to terminate"); xbt_cond_wait(cond, mutex); + } xbt_mutex_release(mutex); if (ctrl_comm) @@ -80,22 +81,34 @@ void communicator::send(const char* dest, message* 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) { - if (wait) { - DEBUG0("suspend main process on recv"); + if (timeout != 0) { + volatile double deadline = + timeout > 0 ? MSG_get_clock() + timeout : 0.0; xbt_mutex_acquire(mutex); - while (received.empty()) - xbt_cond_wait(cond, 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); } @@ -104,7 +117,7 @@ bool communicator::recv(message*& msg, m_host_t& from, bool wait) m_task_t task = received.front(); received.pop(); - msg = (message* )MSG_task_get_data(task); + msg = static_cast(MSG_task_get_data(task)); from = MSG_task_get_source(task); MSG_task_destroy(task); @@ -116,21 +129,14 @@ bool communicator::recv(message*& msg, m_host_t& from, bool wait) 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()) { - 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); + 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(); } } @@ -146,7 +152,7 @@ bool communicator::comm_test_n_destroy(msg_comm_t comm) int communicator::receiver_wrapper(int, char* []) { communicator* comm; - comm = (communicator* )MSG_process_get_data(MSG_process_self()); + comm = static_cast(MSG_process_get_data(MSG_process_self())); int result = comm->receiver(); DEBUG0("terminate"); @@ -162,6 +168,11 @@ 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) { @@ -175,7 +186,9 @@ int communicator::receiver() 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 { @@ -189,7 +202,9 @@ int communicator::receiver() 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 { @@ -200,7 +215,8 @@ int communicator::receiver() } } xbt_mutex_acquire(mutex); - xbt_cond_signal(cond); + if (!received.empty()) + xbt_cond_signal(cond); xbt_mutex_release(mutex); } xbt_dynar_free(&comms);