Hello, Talking about multithreads...
I wonder, how can I implement sending traps in agent, triggered from some other thread that listen independent events? In other words: I have snmpd thread that reacts on snmpXXX events. Where and how in the agent I should add code that also sends traps depending on the external event in the system checks (periodicaly/asynchronously) some status? Thanks in advance, Igor G. Igor Grasic, Ms. D. Development Engineer Iskra Transmission, d. d., Ljubljana Stegne 11, SI-1000 Ljubljana, Slovenia phone: +386 1 5003 000 fax: +386 1 5003 500 www.iskratr.si, www.iskratr.com From: Toth, Gregory S <[EMAIL PROTECTED]> RE: thread-safe support of snmpd 2005-03-28 09:04 You can also wrap all calls to the net-snmp api with mutex"s -----Original Message----- From: Robert Story [mailto:[EMAIL PROTECTED] Sent: Monday, March 28, 2005 8:44 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: thread-safe support of snmpd On Mon, 28 Mar 2005 18:38:31 +0800 (CST) [EMAIL PROTECTED] wrote: LMCC> Since there are at least two threads running in LMCC> snmpd: the main thread which handles SNMP requests and the event LMCC> listening thread, we must make sure snmpd could run thread-safely. No, snmpd is not thread safe. LMCC> I use callback mechanism(SNMP_CALLBACK_LIBRARY and LMCC> SNMP_CALLBACK_SESSION_INIT) to let snmpd create a LMCC> thread which will listen user defined events and LMCC> update the global cache or generate traps according to the LMCC> analysis of these events. The global cache is user defined and LMCC> it"s used in the MIB handlers. The only way to use snmpd in a multi-threaded application is to keep ALL snmp functionality in ONE thread. Other threads may listen for non-snmp related events, and notify the snmpd thread that a trap needs to be sent, but the trap itself must be sent from the snmpd thread. -- Robert Story; NET-SNMP Junkie Support: <http://www.net-snmp.org/> <irc://irc.freenode.net/#net-snmp> Archive: <http://sourceforge.net/mailarchive/forum.php?forum=net-snmp-coders> You are lost in a twisty maze of little standards, all different. ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Net-snmp-coders mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/net-snmp-coders ....................................................... ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
