[Xapian-tickets] [Xapian] #746: Locking Behavior Documentation Out of Date

[Xapian]

#746: Locking Behavior Documentation Out of Date
---------------------------+---------------------------
 Reporter:  tim            |             Owner:  olly
     Type:  defect         |            Status:  closed
 Priority:  normal         |         Milestone:
Component:  Documentation  |           Version:
 Severity:  normal         |        Resolution:  fixed
 Keywords:                 |        Blocked By:
 Blocking:                 |  Operating System:  All
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Changes (by olly):

 * status:  new => closed
 * resolution:   => fixed


Comment:

 I've pushed a fix - new wording is:

 {{{
 One unusual feature of Xapian's locking mechanism (at least on POSIX
 operating systems other than Linux) is that Xapian forks a subprocess to
 hold
 the lock, rather than holding it in the main process.  This is to avoid
 the
 lock being accidentally released due to the slightly unhelpful semantics
 of
 fcntl locks.  Linux kernel 3.15 added new OFD fcntl locks which have more
 helpful semantics which Xapian uses in preference, avoiding the need to
 fork
 a subprocess to hold the lock.
 }}}

 Thanks for reporting.

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Ticket URL: <https://trac.xapian.org/ticket/746#comment:1>
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