X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/61b204c37b11801e5c6649f859773e551c289658..cfaf71bdfb6cf3cb4d0908080b7fb67fa4d5051c:/src/s4u/s4u_Mailbox.cpp

diff --git a/src/s4u/s4u_Mailbox.cpp b/src/s4u/s4u_Mailbox.cpp
index 190dd9d747..abbf92e21a 100644
--- a/src/s4u/s4u_Mailbox.cpp
+++ b/src/s4u/s4u_Mailbox.cpp
@@ -44,6 +44,15 @@ bool Mailbox::listen()
   return not this->empty() || (pimpl_->permanent_receiver_ && not pimpl_->done_comm_queue_.empty());
 }
 
+aid_t Mailbox::listen_from()
+{
+  kernel::activity::CommImplPtr comm = front();
+  if (comm && comm->src_actor_)
+    return comm->src_actor_->get_pid();
+  else
+    return -1;
+}
+
 bool Mailbox::ready()
 {
   bool comm_ready = false;