X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/6d4707a65e4e27048bc5cb33f8db62fdb1b958a3..96311be045a24d96c20acfc876b43c91858464e4:/communicator.cpp

diff --git a/communicator.cpp b/communicator.cpp
index 0f9bc7e..8adb258 100644
--- a/communicator.cpp
+++ b/communicator.cpp
@@ -21,13 +21,10 @@ 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()))
     , mutex(xbt_mutex_init())
     , cond(xbt_cond_init())
-    , send_counter(0)
     , ctrl_task(NULL)
     , ctrl_comm(NULL)
     , data_task(NULL)
@@ -37,6 +34,7 @@ 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);
 }
 
@@ -83,11 +81,6 @@ 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)
@@ -164,6 +157,11 @@ 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) {
 
@@ -177,7 +175,9 @@ 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 {
@@ -191,7 +191,9 @@ 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 {
@@ -202,7 +204,8 @@ 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);