Add method to check if a mailbox has a message ready to be consumed without having...

[simgrid.git] / src / s4u / s4u_Mailbox.cpp

diff --git a/src/s4u/s4u_Mailbox.cpp b/src/s4u/s4u_Mailbox.cpp
index e33292e..b2b60de 100644 (file)
--- a/src/s4u/s4u_Mailbox.cpp
+++ b/src/s4u/s4u_Mailbox.cpp
@@ -43,6 +43,18 @@ bool Mailbox::listen()
   return not this->empty() || (pimpl_->permanent_receiver_ && not pimpl_->done_comm_queue_.empty());
 }
 
+bool Mailbox::ready()
+{
+  bool comm_ready = false;
+  if (not pimpl_->comm_queue_.empty()) {
+    comm_ready = pimpl_->comm_queue_.front()->state_ == SIMIX_DONE;
+  }
+  if (!comm_ready && pimpl_->permanent_receiver_ && not pimpl_->done_comm_queue_.empty()) {
+    comm_ready = pimpl_->done_comm_queue_.front()->state_ == SIMIX_DONE;
+  }
+  return comm_ready;
+}
+
 smx_activity_t Mailbox::front()
 {
   return pimpl_->comm_queue_.empty() ? nullptr : pimpl_->comm_queue_.front();