[PATCH 2 of 7] develwarn: use the lock helper in local repo

[Augie Fackler]

On Fri, Aug 05, 2016 at 03:59:15PM +0200, Pierre-Yves David wrote:
> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at ens-lyon.org>
> # Date 1470397457 -7200
> #      Fri Aug 05 13:44:17 2016 +0200
> # Node ID 9677e36d339bc11d8223aadd9473eb7218b8b6cb
> # Parent  9b65c0820c940442454e5f92a9475c4ec97f705c
> # EXP-Topic vfsward
> develwarn: use the lock helper in local repo

I've taken this patch as it was separable from the rest of the series. Thanks!

>
> We have a helper function to know if a lock is taken. When checking lock usage
> we now use it instead of manually accessing the locks.
>
> diff -r 9b65c0820c94 -r 9677e36d339b mercurial/localrepo.py
> --- a/mercurial/localrepo.py	Thu Aug 04 16:56:50 2016 +0200
> +++ b/mercurial/localrepo.py	Fri Aug 05 13:44:17 2016 +0200
> @@ -1007,8 +1007,7 @@ class localrepository(object):
>      def transaction(self, desc, report=None):
>          if (self.ui.configbool('devel', 'all-warnings')
>                  or self.ui.configbool('devel', 'check-locks')):
> -            l = self._lockref and self._lockref()
> -            if l is None or not l.held:
> +            if self._currentlock(self._lockref) is None:
>                  raise RuntimeError('programming error: transaction requires '
>                                     'locking')
>          tr = self.currenttransaction()
> @@ -1320,8 +1319,8 @@ class localrepository(object):
>
>          If both 'lock' and 'wlock' must be acquired, ensure you always acquires
>          'wlock' first to avoid a dead-lock hazard.'''
> -        l = self._lockref and self._lockref()
> -        if l is not None and l.held:
> +        l = self._currentlock(self._lockref)
> +        if l is not None:
>              l.lock()
>              return l
>
> @@ -1352,8 +1351,7 @@ class localrepository(object):
>          # acquisition would not cause dead-lock as they would just fail.
>          if wait and (self.ui.configbool('devel', 'all-warnings')
>                       or self.ui.configbool('devel', 'check-locks')):
> -            l = self._lockref and self._lockref()
> -            if l is not None and l.held:
> +            if self._currentlock(self._lockref) is not None:
>                  self.ui.develwarn('"wlock" acquired after "lock"')
>
>          def unlock():
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