[AGENT++] Lots of WARNING: Synchronized: recursive trylocking detected (id) messages

[Jochen Katz]

Hello,

> I've noticed that when viewing a MIB table (using iReasoning) there
> is a burst of warning messages :
> 
> WARNING: Synchronized: recursive trylocking detected (id)!:
>
> Are they expected, and if not, indicative of a locking/sync issue somewhere?

I think Frank should answer this question.

> I've tried building our agent without threads but it appears AgentX++ requires threads enabled :

Yes, threads are needed.

> (indeed it is not possible to build snmp++ if configured with -disable-threads :
> 
> /tmp/snmp++-3.3.4/include/snmp_pp/config_snmp_pp.h:79:5: error: #if with no expression

The patch below would fix this (but you need threads enabled...)

Regards,
  Jochen

Index: configure.ac
===================================================================
--- configure.ac        (Revision 2829)
+++ configure.ac        (Arbeitskopie)
@@ -186,7 +186,8 @@
         ],
         [])
     ])
-], [WITH_THREADS=0]) # endif : --enable-threads
+], [WITH_THREADS=0
+    WITH_PTHREAD=0]) # endif : --enable-threads

 dnl Checks for libraries.