Handle timeout exception in condition_t::timedwait().

[loba.git] / communicator.cpp

diff --git a/communicator.cpp b/communicator.cpp
index da5e2b5f8062755727ed07dcd3617e8a07f0a0fb..5abb543582c617a948258fc16845abafbf56cfaa 100644 (file)
--- a/communicator.cpp
+++ b/communicator.cpp
@@ -1,92 +1,140 @@
 #include <algorithm>
 #include <algorithm>

-#include <cstring>
+#include <functional>

 #include <msg/msg.h>
 #include <xbt/log.h>
 #include <msg/msg.h>
 #include <xbt/log.h>

-#include "communicator.h"
-#include "simgrid_features.h"

 
 

-// XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu);
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(comm, simu,
-                                "Messages from asynchronous pipes");
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(comm);
+
+#include "misc.h"
+#include "tracing.h"
+
+#include "communicator.h"

 
 namespace {
 
 
 namespace {
 

-    bool comm_test_n_destroy(msg_comm_t& comm)
+    void check_for_lost_messages(size_t size, const char* descr)

     {
     {

-        if (MSG_comm_test(comm)) {
-            MSG_comm_destroy(comm);
-            return true;
-        } else
-            return false;
+        if (size)
+            XBT_WARN("lost %zu %s message%s!", size, descr, ESSE(size));

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

+    : host(static_cast<hostdata*>(MSG_host_get_data(MSG_host_self())))

 {
 {

-    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());
-
-    data_mbox = hostname;
-    data_mbox += "_data";
-    data_task = NULL;
-    data_comm = MSG_task_irecv(&data_task, get_data_mbox());
+    receiver_thread = new_msg_thread("receiver",
+                                     std::bind(&communicator::receiver, this));
+    receiver_thread->start();

 }
 
 communicator::~communicator()
 {
 }
 
 communicator::~communicator()
 {

-    // fixme: don't know how to free pending communications
-    // (data_comm, ctrl_comm and sent_comm)
+    msg_task_t task;
+
+    XBT_DEBUG("send finalize to receiver/ctrl");
+    task = MSG_task_create("finalize", 0.0, 0, NULL);
+    MSG_task_send(task, host->get_ctrl_mbox());
+
+    XBT_DEBUG("send finalize to receiver/data");
+    task = MSG_task_create("finalize", 0.0, 0, NULL);
+    MSG_task_send(task, host->get_data_mbox());
+
+    receiver_thread->wait();
+    delete receiver_thread;

 
 

-    flush_sent();
-    if (!sent_comm.empty())
-        WARN1("Lost %ld send communications!", (long )sent_comm.size());
+    check_for_lost_messages(ctrl_received.size(), "received ctrl");
+    check_for_lost_messages(data_received.size(), "received data");
+    check_for_lost_messages(ctrl_sent.size(), "sent ctrl");
+    check_for_lost_messages(data_sent.size(), "sent data");

 }
 
 }
 

-void communicator::send(const char* dest, message* msg)
+msg_comm_t communicator::real_send(const char* dest, message* msg)

 {
 {

-    double msg_size = sizeof *msg;
-    if (msg->get_type() == message::LOAD)
-        msg_size += 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();
+    XBT_DEBUG("send %s to %s", msg->to_string().c_str(), dest);
+    msg_task_t task = MSG_task_create("message", 0.0, msg->get_size(), msg);
+    // MSG_task_set_category(task,
+    //                       msg->get_type() == message::DATA ?
+    //                       TRACE_CAT_DATA : TRACE_CAT_CTRL);
+    return MSG_task_isend(task, dest);

 }
 
 }
 

-bool communicator::recv(message*& msg, m_host_t& from)
+void communicator::real_flush(sent_comm_type& sent_comm, bool wait)

 {
 {

-    msg = NULL;
-
-    if (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 = MSG_task_irecv(&ctrl_task, get_ctrl_mbox());
-
-    } else if (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 = MSG_task_irecv(&data_task, get_data_mbox());
+    sent_comm_type::iterator bound =
+        std::remove_if(sent_comm.begin(), sent_comm.end(),
+                       comm_test_n_destroy);
+    sent_comm.erase(bound, sent_comm.end());
+    if (wait && !sent_comm.empty()) {
+        size_t size = sent_comm.size();
+        msg_comm_t* comms = new msg_comm_t[size];
+        std::copy(sent_comm.begin(), sent_comm.end(), comms);
+        sent_comm.clear();
+        MSG_comm_waitall(comms, size, -1.0);
+        std::for_each(comms, comms + size, comm_check_n_destroy);
+        delete[] comms;

     }
     }

+}
+
+void communicator::receiver()
+{
+    xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
+    struct channel {
+        msg_comm_t comm;
+        msg_task_t task;
+        const char* mbox;
+        message_queue& received;
+    };
+    channel chan[] = { { NULL, NULL, host->get_ctrl_mbox(), ctrl_received },
+                       { NULL, NULL, host->get_data_mbox(), data_received } };
+    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);
+    }
+
+    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);
+            ch->received.push(ch->task);
+            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);
+        }

 
 

-    return msg != NULL;
+    }
+    xbt_dynar_free(&comms);

 }
 
 }
 

-int communicator::send_backlog()
+void communicator::comm_check_n_destroy(msg_comm_t comm)

 {
 {

-    flush_sent();
-    return sent_comm.size();
+    xbt_assert(MSG_comm_get_status(comm) == MSG_OK);
+    MSG_comm_destroy(comm);

 }
 
 }
 

-void communicator::flush_sent()
+bool communicator::comm_test_n_destroy(msg_comm_t comm)

 {
 {

-    std::remove_if(sent_comm.begin(), sent_comm.end(), comm_test_n_destroy);
+    if (MSG_comm_test(comm)) {
+        comm_check_n_destroy(comm);
+        return true;
+    } else
+        return false;

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