Imported Upstream version 2.0.9.dfsgupstream/2.0.9.dfsg

1 files changed, 17 insertions, 0 deletions

diff --git a/src/ypipe.hpp b/src/ypipe.hpp
index df5b3d0..26f021c 100644
--- a/src/ypipe.hpp
+++ b/src/ypipe.hpp
@@ -50,6 +50,12 @@ namespace zmq
             c.set (&queue.back ());
         }
 
+        //  The destructor doesn't have to be virtual. It is mad virtual
+        //  just to keep ICC and code checking tools from complaining.
+        inline virtual ~ypipe_t ()
+        {
+        }
+
         //  Following function (write) deliberately copies uninitialised data
         //  when used with zmq_msg. Initialising the VSM body for
         //  non-VSM messages won't be good for performance.
@@ -156,6 +162,17 @@ namespace zmq
             return true;
         }
 
+        //  Applies the function fn to the first elemenent in the pipe
+        //  and returns the value returned by the fn.
+        //  The pipe mustn't be empty or the function crashes.
+        inline bool probe (bool (*fn)(T &))
+        {
+                bool rc = check_read ();
+                zmq_assert (rc);
+
+                return (*fn) (queue.front ());
+        }
+
     protected:
 
         //  Allocation-efficient queue to store pipe items.