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commit-slab: provide a static initializer 

Callers currently must use init_foo_slab() at runtime before
accessing a slab. For global slabs, it's much nicer if we
can initialize them in BSS, so that each user does not have
to add code to check-and-initialize.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2014-06-10 17:42:51 -04:00 committed by Junio C Hamano
parent bc6b8fc130
commit 80cdaba569
1 changed files with 12 additions and 0 deletions
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12
commit-slab.h
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@ -117,4 +117,16 @@ static int stat_ ##slabname## realloc
* catch because GCC silently parses it by default.
*/
/*
* Statically initialize a commit slab named "var". Note that this
* evaluates "stride" multiple times! Example:
*
* struct indegree indegrees = COMMIT_SLAB_INIT(1, indegrees);
*
*/
#define COMMIT_SLAB_INIT(stride, var) { \
COMMIT_SLAB_SIZE / sizeof(**((var).slab)) / (stride), \
(stride), 0, NULL \
}
#endif /* COMMIT_SLAB_H */