zmq_errno helper function added

2 files changed, 15 insertions, 0 deletions

diff --git a/bindings/c/zmq.h b/bindings/c/zmq.h
index c6d4692..254971d 100644
--- a/bindings/c/zmq.h
+++ b/bindings/c/zmq.h
@@ -212,6 +212,16 @@ typedef struct
 ZMQ_EXPORT int zmq_poll (zmq_pollitem_t *items, int nitems, long timeout);
 
 ////////////////////////////////////////////////////////////////////////////////
+//  Experimental.
+////////////////////////////////////////////////////////////////////////////////
+
+//  This function retrieves the errno as it is known to 0MQ library. The goal
+//  of this function is to make the code 100% portable, including where 0MQ
+//  compiled with certain CRT library (on Windows) is linked to an application
+//  compiled with different CRT library.
+int zmq_errno ();
+
+////////////////////////////////////////////////////////////////////////////////
 //  Helper functions.
 ////////////////////////////////////////////////////////////////////////////////
 
diff --git a/src/zmq.cpp b/src/zmq.cpp
index 1275804..ca9a970 100644
--- a/src/zmq.cpp
+++ b/src/zmq.cpp
@@ -615,6 +615,11 @@ int zmq_poll (zmq_pollitem_t *items_, int nitems_, long timeout_)
 #endif
 }
 
+int zmq_errno ()
+{
+    return errno;
+}
+
 #if defined ZMQ_HAVE_WINDOWS
 
 static uint64_t now ()