FAQ:General 17 - Revision history

Dts12: Latest FAQ revision - preparing for 5.5 release

2009-07-21T09:02:32Z

Latest FAQ revision - preparing for 5.5 release

2006-12-28T14:10:46Z

Move FAQ text to a template page

2006-08-16T09:18:22Z

2006-08-16T08:54:48Z

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= Where can I find more information about network management? =

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-= Is Net-SNMP thread safe? =
+= Where can I find more information about network management? =
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 = Is Net-SNMP thread safe? =
-Strictly speaking, no.  However, it should be possible to use the
+{{FAQ:General_17}}
-library in a thread-safe manner.  This is covered in detail in the file
-README.thread (shipped with the standard distribution), but can be
-summarised as follows:
-−
-* Call 'snmp_sess_init()' prior to activating any threads.<BR>This reads in and parses MIB information (which isn't thread-safe) as well as preparing a session structure for subsequent use.
-−
-* Open an SNMP session using 'snmp_sess_open()' which returns an opaque session handle, which is essentially independent of any other sessions (regardless of thread).
-−
-* Resource locking is not handled within the library, and is the responsibility of the main application.
-−
-The applications and the agent have not been designed for threaded use.
-It should be safe to use the agent library to embed a subagent within
-a threaded application as long as *all* SNMP-related activity (including
-generating traps, and parsing MIBs) is handled within a single thread.
-−
-Unfortunately, the SNMPv3 support was added about the same time as
-the thread support and since they occurred in parallel the SNMPv3
-support was never checked for multi-threading correctness.  It is
-most likely that it is not thread-safe at this time.
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