Merge with master

[simgrid.git] / src / msg / msg_mailbox.c

diff --git a/src/msg/msg_mailbox.c b/src/msg/msg_mailbox.c
index b8b63a2..7e5e577 100644 (file)
--- a/src/msg/msg_mailbox.c
+++ b/src/msg/msg_mailbox.c
@@ -58,13 +58,13 @@ msg_mailbox_t MSG_mailbox_get_by_alias(const char *alias)
 /** \ingroup msg_mailbox_management
  * \brief Set the mailbox to receive in asynchronous mode
  *
- * All messages sent to this mailbox will be transferred to 
- * the receiver without waiting for the receive call. 
+ * All messages sent to this mailbox will be transferred to
+ * the receiver without waiting for the receive call.
  * The receive call will still be necessary to use the received data.
- * If there is a need to receive some messages asynchronously, and some not, 
+ * If there is a need to receive some messages asynchronously, and some not,
  * two different mailboxes should be used.
  *
- * \param alias The name of the mailbox 
+ * \param alias The name of the mailbox
  */
 void MSG_mailbox_set_async(const char *alias){
   msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
@@ -180,10 +180,20 @@ MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, msg_task_t task,
   t_simdata->sender = process;
   t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
 
-  xbt_assert(t_simdata->isused == 0,
-              "This task is still being used somewhere else. You cannot send it now. Go fix your code!");
+  if (t_simdata->isused != 0) {
+    if (msg_global->multiple_backtraces){
+      XBT_ERROR("This task is already used in there:");
+      xbt_backtrace_display(t_simdata->isused);
+      THROWF(unknown_error, 0, "And you try to reuse it from here. You cannot send it now. Go fix your code!");
+    } else {
+      THROWF(unknown_error, 0, "This task is still being used somewhere else. You cannot send it now. Go fix your code! (use --cfg=msg/multiple_backtraces:on to get the backtrace of the other process)");
+    }
+  }
 
-  t_simdata->isused=1;
+  if (msg_global->multiple_backtraces)
+    MSG_BT(t_simdata->isused, "Using Backtrace");
+  else
+    t_simdata->isused = (void*)1;
   t_simdata->comm = NULL;
   msg_global->sent_msg++;