X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0c06c178342da8b6df3c53a91107bae2078b45fb..76abe652b11210f5af3d2ce223aa133ec79232ba:/src/msg/gos.c

diff --git a/src/msg/gos.c b/src/msg/gos.c
index 3e1a6e67a1..17f0326181 100644
--- a/src/msg/gos.c
+++ b/src/msg/gos.c
@@ -14,7 +14,6 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gos, msg,
 /** \ingroup msg_gos_functions
  * \brief This function is now deprecated and useless. Please stop using it.
  */
-
 MSG_error_t MSG_process_start(m_process_t process)
 {
   xbt_assert0(0,"This function is now deprecated and useless. Please stop using it.");
@@ -58,10 +57,12 @@ MSG_error_t MSG_task_get(m_task_t * task,
   h = MSG_host_self();
   h_simdata = h->simdata;
   while ((t = xbt_fifo_pop(h_simdata->mbox[channel])) == NULL) {
-    xbt_assert0(!(h_simdata->sleeping[channel]),
-		"A process is already blocked on this channel");
+    xbt_assert2(!(h_simdata->sleeping[channel]),
+		"A process (%s(%d)) is already blocked on this channel",
+		h_simdata->sleeping[channel]->name,
+		h_simdata->sleeping[channel]->simdata->PID);
     h_simdata->sleeping[channel] = process; /* I'm waiting. Wake me up when you're ready */
-    MSG_process_suspend(process);
+    __MSG_process_block();
     if(surf_workstation_resource->extension_public->get_state(h_simdata->host) 
        == SURF_CPU_OFF)
       MSG_RETURN(MSG_HOST_FAILURE);
@@ -75,19 +76,30 @@ MSG_error_t MSG_task_get(m_task_t * task,
 
   /* Transfer */
   t_simdata->using++;
+
   t_simdata->comm = surf_workstation_resource->extension_public->
     communicate(MSG_process_get_host(t_simdata->sender)->simdata->host,
-		h->simdata->host, t_simdata->message_size);
+		h->simdata->host, t_simdata->message_size,t_simdata->rate);
+  
   surf_workstation_resource->common_public->action_set_data(t_simdata->comm,t);
 
-  if(MSG_process_isSuspended(t_simdata->sender)) 
-    MSG_process_resume(t_simdata->sender);
+  if(__MSG_process_isBlocked(t_simdata->sender)) 
+    __MSG_process_unblock(t_simdata->sender);
+
+  PAJE_PROCESS_STATE(process,"C");  
 
   do {
     __MSG_task_wait_event(process, t);
     state=surf_workstation_resource->common_public->action_get_state(t_simdata->comm);
   } while (state==SURF_ACTION_RUNNING);
 
+  if(t->simdata->using>1) {
+    xbt_fifo_unshift(msg_global->process_to_run,process);
+    xbt_context_yield();
+  }
+
+  PAJE_COMM_STOP(process,t,channel);
+
   if(state == SURF_ACTION_DONE) MSG_RETURN(MSG_OK);
   else if(surf_workstation_resource->extension_public->get_state(h_simdata->host) 
 	  == SURF_CPU_OFF)
@@ -115,6 +127,33 @@ int MSG_task_Iprobe(m_channel_t channel)
   return(xbt_fifo_getFirstItem(h_simdata->mbox[channel])!=NULL);
 }
 
+/** \ingroup msg_gos_functions
+ * \brief Test whether there is a pending communication on a channel, and who sent it.
+ *
+ * It takes one parameter.
+ * \param channel the channel on which the agent should be
+   listening. This value has to be >=0 and < than the maximal
+   number of channels fixed with MSG_set_channel_number().
+ * \return -1 if there is no pending communication and the PID of the process who sent it otherwise
+ */
+int MSG_task_probe_from(m_channel_t channel)
+{
+  m_host_t h = NULL;
+  simdata_host_t h_simdata = NULL;
+  xbt_fifo_item_t item;
+  m_task_t t;
+
+  CHECK_HOST();
+  h = MSG_host_self();
+  h_simdata = h->simdata;
+   
+  item = xbt_fifo_getFirstItem(((simdata_host_t)h->simdata)->mbox[channel]);
+  if (!item || !(t = xbt_fifo_get_item_content(item)) || (simdata_task_t)t->simdata)
+    return -1;
+   
+  return MSG_process_get_PID(((simdata_task_t)t->simdata)->sender);
+}
+
 /** \ingroup msg_gos_functions
  * \brief Put a task on a channel of an host and waits for the end of the
  * transmission.
@@ -159,22 +198,27 @@ MSG_error_t MSG_task_put(m_task_t task,
 
   xbt_fifo_push(((simdata_host_t) remote_host->simdata)->
 		mbox[channel], task);
+
+  PAJE_COMM_START(process,task,channel);
     
   if(remote_host->simdata->sleeping[channel]) 
-    MSG_process_resume(remote_host->simdata->sleeping[channel]);
-  else {
-    process->simdata->put_host = dest;
-    process->simdata->put_channel = channel;
-    while(!(task_simdata->comm)) 
-      MSG_process_suspend(process);
-    process->simdata->put_host = NULL;
-    process->simdata->put_channel = -1;
-  }
-
-  do {
+    __MSG_process_unblock(remote_host->simdata->sleeping[channel]);
+/*   else { */
+  process->simdata->put_host = dest;
+  process->simdata->put_channel = channel;
+  while(!(task_simdata->comm)) 
+    __MSG_process_block();
+  process->simdata->put_host = NULL;
+  process->simdata->put_channel = -1;
+/*   } */
+
+  PAJE_PROCESS_STATE(process,"C");  
+
+  state=surf_workstation_resource->common_public->action_get_state(task_simdata->comm);
+  while (state==SURF_ACTION_RUNNING) {
     __MSG_task_wait_event(process, task);
     state=surf_workstation_resource->common_public->action_get_state(task_simdata->comm);
-  } while (state==SURF_ACTION_RUNNING);
+  }
     
   MSG_task_destroy(task);
 
@@ -185,6 +229,21 @@ MSG_error_t MSG_task_put(m_task_t task,
   else MSG_RETURN(MSG_TRANSFER_FAILURE);
 }
 
+/** \ingroup msg_gos_functions
+ * \brief Does exactly the same as MSG_task_put but with a bounded transmition 
+ * rate.
+ *
+ * \sa MSG_task_put
+ */
+MSG_error_t MSG_task_put_bounded(m_task_t task,
+				 m_host_t dest, m_channel_t channel,
+				 long double max_rate)
+{
+  task->simdata->rate=max_rate;
+  return(MSG_task_put(task, dest, channel));
+  task->simdata->rate=-1.0;
+}
+
 /** \ingroup msg_gos_functions
  * \brief Executes a task and waits for its termination.
  *
@@ -200,6 +259,7 @@ MSG_error_t MSG_task_execute(m_task_t task)
   m_process_t process = MSG_process_self();
 
   __MSG_task_execute(process, task);
+  PAJE_PROCESS_STATE(process,"E");  
   return __MSG_wait_for_computation(process,task);
 }
 
@@ -275,8 +335,8 @@ MSG_error_t MSG_process_sleep(long double nb_sec)
        == SURF_CPU_OFF)
       MSG_RETURN(MSG_HOST_FAILURE);
 
-    if(MSG_process_isSuspended(process)) {
-      MSG_process_suspend(MSG_process_self());
+    if(__MSG_process_isBlocked(process)) {
+      __MSG_process_unblock(MSG_process_self());
     }
     if(surf_workstation_resource->extension_public->
        get_state(MSG_process_get_host(process)->simdata->host) 
@@ -308,4 +368,3 @@ MSG_error_t MSG_get_errno(void)
 {
   return PROCESS_GET_ERRNO();
 }
-