Logo AND Algorithmique Numérique Distribuée

Public GIT Repository
SIMIX_CANCELED is a more adapted state in SIMIX_comm_cancel()
[simgrid.git] / src / simix / smx_network.c
index 2e81c90..d5d4631 100644 (file)
@@ -18,6 +18,7 @@ unsigned long int smx_total_comms = 0;
 static void SIMIX_waitany_req_remove_from_actions(smx_req_t req);
 static void SIMIX_comm_copy_data(smx_action_t comm);
 static smx_action_t SIMIX_comm_new(e_smx_comm_type_t type);
+static void SIMIX_comm_remove_from_processes(smx_action_t action);
 static XBT_INLINE void SIMIX_rdv_push(smx_rdv_t rdv, smx_action_t comm);
 static XBT_INLINE void SIMIX_rdv_remove(smx_rdv_t rdv, smx_action_t comm);
 static smx_action_t SIMIX_rdv_get_request(smx_rdv_t rdv, e_smx_comm_type_t type,
@@ -63,8 +64,7 @@ void SIMIX_rdv_destroy(smx_rdv_t rdv)
 void SIMIX_rdv_free(void *data)
 {
   smx_rdv_t rdv = (smx_rdv_t) data;
-  if (rdv->name)
-    xbt_free(rdv->name);
+  xbt_free(rdv->name);
   xbt_fifo_free(rdv->comm_fifo);
   xbt_free(rdv);  
 }
@@ -258,10 +258,6 @@ void SIMIX_comm_destroy(smx_action_t action)
     action->latency_limited = SIMIX_comm_is_latency_bounded( action ) ;
 #endif
 
-#ifdef HAVE_TRACING
-  TRACE_smx_action_destroy(action);
-#endif
-
   xbt_free(action->name);
   SIMIX_comm_destroy_internal_actions(action);
 
@@ -314,9 +310,10 @@ smx_action_t SIMIX_comm_isend(smx_process_t src_proc, smx_rdv_t rdv,
     action->state = SIMIX_READY;
     action->comm.type = SIMIX_COMM_READY;
   }
+  xbt_fifo_push(src_proc->comms, action);
 
-  /* If the communication action is detached then decrease the refcount
-   * by one, so it will be eliminated by the receivers destroy call */
+  /* if the communication action is detached then decrease the refcount
+   * by one, so it will be eliminated by the receiver's destroy call */
   if (detached) {
     action->comm.detached = 1;
     action->comm.refcount--;
@@ -357,6 +354,7 @@ smx_action_t SIMIX_comm_irecv(smx_process_t dst_proc, smx_rdv_t rdv,
     action->state = SIMIX_READY;
     action->comm.type = SIMIX_COMM_READY;
   }
+  xbt_fifo_push(dst_proc->comms, action);
 
   /* Setup communication request */
   action->comm.dst_proc = dst_proc;
@@ -517,6 +515,7 @@ XBT_INLINE void SIMIX_comm_start(smx_action_t action)
 {
   /* If both the sender and the receiver are already there, start the communication */
   if (action->state == SIMIX_READY) {
+
     smx_host_t sender = action->comm.src_proc->smx_host;
     smx_host_t receiver = action->comm.dst_proc->smx_host;
 
@@ -530,10 +529,6 @@ XBT_INLINE void SIMIX_comm_start(smx_action_t action)
 
     action->state = SIMIX_RUNNING;
 
-#ifdef HAVE_TRACING
-    TRACE_smx_action_communicate(action, action->comm.src_proc);
-#endif
-
     /* If a link is failed, detect it immediately */
     if (surf_workstation_model->action_state_get(action->comm.surf_comm) == SURF_ACTION_FAILED) {
       XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure",
@@ -557,6 +552,8 @@ void SIMIX_comm_finish(smx_action_t action)
   unsigned int destroy_count = 0;
   smx_req_t req;
 
+  SIMIX_comm_remove_from_processes(action);
+
   while ((req = xbt_fifo_shift(action->request_list))) {
 
     /* If a waitany request is waiting for this action to finish, then remove
@@ -628,7 +625,9 @@ void SIMIX_comm_finish(smx_action_t action)
       case SIMIX_LINK_FAILURE:
         TRY {
          XBT_DEBUG("Link failure in action %p between '%s' and '%s': posting an exception to the issuer: %s (%p)",
-             action, action->comm.src_proc->smx_host->name, action->comm.dst_proc->smx_host->name,
+             action,
+             action->comm.src_proc ? action->comm.src_proc->smx_host->name : NULL,
+             action->comm.dst_proc ? action->comm.dst_proc->smx_host->name : NULL,
              req->issuer->name, req->issuer);
           THROWF(network_error, 0, "Link failure");
         }
@@ -681,28 +680,49 @@ void SIMIX_post_comm(smx_action_t action)
   else
     action->state = SIMIX_DONE;
 
-  XBT_DEBUG("SIMIX_post_comm: action state = %d", action->state);
+  XBT_DEBUG("SIMIX_post_comm: comm %p, state %d, src_proc %p, dst_proc %p, detached: %d",
+      action, action->state, action->comm.src_proc, action->comm.dst_proc, action->comm.detached);
 
-  /* After this point the surf actions associated with the simix communicate
-     action are no longer needed, thus we delete them. */
+  /* destroy the surf actions associated with the Simix communication */
   SIMIX_comm_destroy_internal_actions(action);
 
-  /* If there are requests associated with the action, then answer them */
-  if (xbt_fifo_size(action->request_list))
+  /* if there are requests associated with the action, then answer them */
+  if (xbt_fifo_size(action->request_list)) {
     SIMIX_comm_finish(action);
+  }
+  else {
+    SIMIX_comm_remove_from_processes(action);
+  }
+}
+
+/**
+ * \brief Removes a communication action from the list of pending communications
+ * of both processes (if they still exist)
+ * \param action a communication action
+ */
+static void SIMIX_comm_remove_from_processes(smx_action_t action) {
+
+  if (action->comm.src_proc) {
+    xbt_fifo_remove(action->comm.src_proc->comms, action);
+  }
+  if (action->comm.dst_proc) {
+    xbt_fifo_remove(action->comm.dst_proc->comms, action);
+  }
 }
 
 void SIMIX_comm_cancel(smx_action_t action)
 {
-  /* If the action is a waiting state means that it is still in a rdv */
+  /* if the action is a waiting state means that it is still in a rdv */
   /* so remove from it and delete it */
   if (action->state == SIMIX_WAITING) {
     SIMIX_rdv_remove(action->comm.rdv, action);
-    action->state = SIMIX_FAILED;
-  } else {
-    /* When running the MC there are no surf actions */
-    if(!MC_IS_ENABLED)
-      surf_workstation_model->action_cancel(action->comm.surf_comm);
+    action->state = SIMIX_CANCELED;
+  }
+  else if (!MC_IS_ENABLED
+      && (action->state == SIMIX_READY || action->state == SIMIX_RUNNING)) {
+
+    /* when running the MC there are no surf actions */
+    surf_workstation_model->action_cancel(action->comm.surf_comm);
   }
 }
 
@@ -729,6 +749,10 @@ double SIMIX_comm_get_remains(smx_action_t action)
 {
   double remains;
 
+  if(!action){
+      return 0;
+  }
+
   switch (action->state) {
 
     case SIMIX_RUNNING:
@@ -789,6 +813,9 @@ smx_process_t SIMIX_comm_get_dst_proc(smx_action_t action)
  */
 XBT_INLINE int SIMIX_comm_is_latency_bounded(smx_action_t action)
 {
+  if(!action){
+      return 0;
+  }
   if (action->comm.surf_comm){
       XBT_DEBUG("Getting latency limited for surf_action (%p)", action->comm.surf_comm);
       action->latency_limited = surf_workstation_model->get_latency_limited(action->comm.surf_comm);
@@ -812,7 +839,7 @@ SIMIX_comm_set_copy_data_callback(void (*callback) (smx_action_t, size_t))
 
 void SIMIX_comm_copy_pointer_callback(smx_action_t comm, size_t buff_size)
 {
-  xbt_assert1((buff_size == sizeof(void *)),
+  xbt_assert((buff_size == sizeof(void *)),
               "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
   *(void **) (comm->comm.dst_buff) = comm->comm.src_buff;
 }