Define classes for mutex and condition objects.

[loba.git] / communicator.cpp

diff --git a/communicator.cpp b/communicator.cpp
index 94cdb04160337353a0a1bab8b2797d88c0ce415d..506f126ce14b37975b4e61dfee62302a1b89f4be 100644 (file)
--- a/communicator.cpp
+++ b/communicator.cpp
@@ -9,6 +9,8 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm);
 
 #include "misc.h"
 #include "options.h"
 
 #include "misc.h"
 #include "options.h"

+#include "simgrid_features.h"
+#include "tracing.h"

 
 #include "communicator.h"
 
 
 #include "communicator.h"
 


@@ -21,82 +23,81 @@ std::string message::to_string()
     return oss.str();
 }
 
     return oss.str();
 }
 

-const int communicator::send_count_before_flush = 4;
-

 communicator::communicator()
 communicator::communicator()

-    : host((hostdata* )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)
-    , data_comm(NULL)
+    : host(static_cast<hostdata*>(MSG_host_get_data(MSG_host_self())))

 {
 {

-    xbt_mutex_acquire(mutex);
-    receiver_process =
+    receiver_mutex.acquire();
+    receiver_thread =

         MSG_process_create("receiver", communicator::receiver_wrapper,
                            this, MSG_host_self());
         MSG_process_create("receiver", communicator::receiver_wrapper,
                            this, MSG_host_self());

-    xbt_mutex_release(mutex);
+    receiver_cond.wait(receiver_mutex); // wait for the receiver to be ready
+    receiver_mutex.release();

 }
 
 communicator::~communicator()
 {
     m_task_t task;
 
 }
 
 communicator::~communicator()
 {
     m_task_t task;
 

-    DEBUG0("send finalize to receiver/ctrl");
+    XBT_DEBUG("send finalize to receiver/ctrl");

     task = MSG_task_create("finalize", 0.0, 0, NULL);
     task = MSG_task_create("finalize", 0.0, 0, NULL);

-    MSG_task_send(task, get_ctrl_mbox());
+    MSG_task_send(task, host->get_ctrl_mbox());

 
 

-    DEBUG0("send finalize to receiver/data");
+    XBT_DEBUG("send finalize to receiver/data");

     task = MSG_task_create("finalize", 0.0, 0, NULL);
     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)
-        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!");
+    MSG_task_send(task, host->get_data_mbox());
+
+    receiver_mutex.acquire();
+    while (receiver_thread) {
+        XBT_DEBUG("waiting for receiver to terminate");
+        receiver_cond.wait(receiver_mutex);
+    }
+    receiver_mutex.release();
+

     if (!received.empty())
     if (!received.empty())

-        WARN2("lost %lu received message%s!",
-              (unsigned long )received.size(), ESSE(received.size()));
+        XBT_WARN("lost %zu received message%s!",
+                 received.size(), ESSE(received.size()));

     if (!sent_comm.empty())
     if (!sent_comm.empty())

-        WARN2("lost %lu sent message%s!",
-              (unsigned long )sent_comm.size(), ESSE(sent_comm.size()));
-
-    xbt_cond_destroy(cond);
-    xbt_mutex_destroy(mutex);
+        XBT_WARN("lost %zu sent message%s!",
+                 sent_comm.size(), ESSE(sent_comm.size()));

 }
 
 void communicator::send(const char* dest, message* msg)
 {
 }
 
 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);    
     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);
     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");
-        xbt_mutex_acquire(mutex);
-        while (received.empty())
-            xbt_cond_wait(cond, mutex);
-        xbt_mutex_release(mutex);
+    if (timeout != 0) {
+        volatile double deadline =
+            timeout > 0 ? MSG_get_clock() + timeout : 0.0;
+        receiver_mutex.acquire();
+        while (received.empty() && (!deadline || deadline > MSG_get_clock())) {
+            xbt_ex_t e;
+            XBT_DEBUG("waiting for a message to come");
+            TRY {
+                if (deadline)
+                    receiver_cond.timedwait(receiver_mutex,
+                                            deadline - MSG_get_clock());
+                else
+                    receiver_cond.wait(receiver_mutex);
+            }
+            CATCH (e) {
+                if (e.category != timeout_error)
+                    RETHROW;
+                xbt_ex_free(e);
+            }
+        }
+        receiver_mutex.release();

     }
 
     if (received.empty())
     }
 
     if (received.empty())


@@ -104,11 +105,11 @@ bool communicator::recv(message*& msg, m_host_t& from, bool wait)
 
     m_task_t task = received.front();
     received.pop();
 
     m_task_t task = received.front();
     received.pop();

-    msg = (message* )MSG_task_get_data(task);
+    msg = static_cast<message*>(MSG_task_get_data(task));

     from = MSG_task_get_source(task);
     MSG_task_destroy(task);
 
     from = MSG_task_get_source(task);
     MSG_task_destroy(task);
 

-    DEBUG2("received %s from %s",
+    XBT_DEBUG("received %s from %s",

            msg->to_string().c_str(), MSG_host_get_name(from));
 
     return true;
            msg->to_string().c_str(), MSG_host_get_name(from));
 
     return true;


@@ -116,95 +117,99 @@ bool communicator::recv(message*& msg, m_host_t& from, bool wait)
 
 void communicator::flush(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()) {
     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(),
             std::for_each(sent_comm.begin(), sent_comm.end(),

-                          bind(xbt_dynar_push,
-                               comms, bind(misc::address<msg_comm_t>(), _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();

     }
 }
 
     }
 }
 

-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* [])
 {
     communicator* comm;
 int communicator::receiver_wrapper(int, char* [])
 {
     communicator* comm;

-    comm = (communicator* )MSG_process_get_data(MSG_process_self());
-    int result = comm->receiver();
+    comm = static_cast<communicator*>(MSG_process_get_data(MSG_process_self()));
+    comm->receiver();

 
 

-    DEBUG0("terminate");
-    xbt_mutex_acquire(comm->mutex);
-    comm->receiver_process = NULL;
-    xbt_cond_signal(comm->cond);
-    xbt_mutex_release(comm->mutex);
+    XBT_DEBUG("terminate");
+    comm->receiver_mutex.acquire();
+    comm->receiver_thread = NULL;
+    comm->receiver_cond.signal();
+    comm->receiver_mutex.release();

 
 

-    return result;
+    return 0;

 }
 
 }
 

-int communicator::receiver()
+void communicator::receiver()

 {
 {

-    ctrl_comm = MSG_task_irecv(&ctrl_task, get_ctrl_mbox());
-    data_comm = MSG_task_irecv(&data_task, get_data_mbox());

     xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
     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");
-                received.push(ctrl_task);
-                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;
-            }
-        }
+    struct channel {
+        msg_comm_t comm;
+        m_task_t task;
+        const char* mbox;
+    };
+    channel chan[] = { { NULL, NULL, host->get_ctrl_mbox() },
+                       { NULL, NULL, host->get_data_mbox() } };
+    const int chan_size = (sizeof chan) / (sizeof chan[0]);
+
+    for (int i = 0 ; i < chan_size ; ++i) {
+        chan[i].comm = MSG_task_irecv(&chan[i].task, chan[i].mbox);
+        xbt_dynar_push(comms, &chan[i].comm);
+    }

 
 

-        if (data_comm && comm_test_n_destroy(data_comm)) {
-            if (strcmp(MSG_task_get_name(data_task), "finalize")) {
-                DEBUG0("received message from data");
-                received.push(data_task);
-                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_DEBUG("receiver ready");
+    receiver_mutex.acquire();
+    receiver_cond.signal();     // signal master that we are ready
+    receiver_mutex.release();
+
+    while (!xbt_dynar_is_empty(comms)) {
+
+        int index = MSG_comm_waitany(comms);
+        msg_comm_t finished_comm = xbt_dynar_get_as(comms, index, msg_comm_t);
+        channel* ch;
+
+        for (ch = chan ; ch->comm != finished_comm ; ++ch)
+            /* nop */;
+
+        comm_check_n_destroy(ch->comm);
+        if (strcmp(MSG_task_get_name(ch->task), "finalize")) {
+            XBT_DEBUG("received message on %s", ch->mbox);
+            receiver_mutex.acquire();
+            received.push(ch->task);
+            receiver_cond.signal();
+            receiver_mutex.release();
+            ch->task = NULL;
+            ch->comm = MSG_task_irecv(&ch->task, ch->mbox);
+            xbt_dynar_set_as(comms, index, msg_comm_t, ch->comm);
+        } else {
+            XBT_DEBUG("received finalize on %s", ch->mbox);
+            MSG_task_destroy(ch->task);
+            ch->task = NULL;
+            ch->comm = NULL;
+            xbt_dynar_remove_at(comms, index, NULL);

         }
         }

-        xbt_mutex_acquire(mutex);
-        xbt_cond_signal(cond);
-        xbt_mutex_release(mutex);
+

     }
     xbt_dynar_free(&comms);
     }
     xbt_dynar_free(&comms);

-    return 0;
+}
+
+void communicator::comm_check_n_destroy(msg_comm_t comm)
+{
+    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)) {
+        comm_check_n_destroy(comm);
+        return true;
+    } else
+        return false;

 }
 
 // Local variables:
 }
 
 // Local variables: