Fix to resume and register event handlers after returning -1 from

handle_*.  Dev_Poll_Reactor on Linux uses epoll with one-shot and
suspends handlers when an event is received.  New logic attempts
to resume handler when -1 is returned.  Added test.
From OCITAO 2.2a Fri Nov 14 16:47:56 UTC 2014

1 files changed, 16 insertions, 1 deletions

diff --git a/ACE/ace/Dev_Poll_Reactor.cpp b/ACE/ace/Dev_Poll_Reactor.cpp
index 9bf45ceb24e..c8ca2f96e3a 100644
--- a/ACE/ace/Dev_Poll_Reactor.cpp
+++ b/ACE/ace/Dev_Poll_Reactor.cpp
@@ -1320,7 +1320,22 @@ ACE_Dev_Poll_Reactor::dispatch_io_event (Token_Guard &guard)
         if (info != 0 && info->event_handler == eh)
           {
             if (status < 0)
-              this->remove_handler_i (handle, disp_mask, grd);
+              {
+                this->remove_handler_i (handle, disp_mask, grd);
+#ifdef ACE_HAS_EVENT_POLL
+                // epoll-based effectively suspends handlers around the upcall.
+                // If the handler must be resumed, check to be sure it's the
+                // same handle/handler combination still.
+                if (reactor_resumes_eh)
+                  {
+                    info = this->handler_rep_.find (handle);
+                    if (info != 0 && info->event_handler == eh)
+                      {
+                        this->resume_handler_i (handle);
+                      }
+                  }
+#endif /* ACE_HAS_EVENT_POLL */
+	      }
           }
       }
       // Scope close handles eh ref count decrement, if needed.