K 10
svn:author
V 5
eugen
K 8
svn:date
V 27
2019-10-11T18:05:06.387735Z
K 7
svn:log
V 375
MFC r347439 by markj: Atomically update the global gMsgId in libnetgraph.

Otherwise concurrently running threads may inadvertently use the same
token for different messages.

Preserve the behaviour of disallowing negative message tokens, but allow
a message token value of zero since this simplifies the code a bit and
tokens are documented to be non-negative.

PR:		234442

END