mirror of https://github.com/git/git.git
commit-slab: support shared commit-slab
define_shared_commit_slab() could be used in a header file to define a commit-slab. One of these C files must include commit-slab-impl.h and "call" implement_shared_commit_slab(). Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -27,4 +27,17 @@ struct slabname { \
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(stride), 0, NULL \
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(stride), 0, NULL \
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}
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}
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#define declare_commit_slab_prototypes(slabname, elemtype) \
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\
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void init_ ##slabname## _with_stride(struct slabname *s, unsigned stride); \
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void init_ ##slabname(struct slabname *s); \
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void clear_ ##slabname(struct slabname *s); \
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elemtype *slabname## _at_peek(struct slabname *s, const struct commit *c, int add_if_missing); \
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elemtype *slabname## _at(struct slabname *s, const struct commit *c); \
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elemtype *slabname## _peek(struct slabname *s, const struct commit *c)
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#define define_shared_commit_slab(slabname, elemtype) \
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declare_commit_slab(slabname, elemtype); \
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declare_commit_slab_prototypes(slabname, elemtype)
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#endif /* COMMIT_SLAB_HDR_H */
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#endif /* COMMIT_SLAB_HDR_H */
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@ -3,11 +3,17 @@
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#define MAYBE_UNUSED __attribute__((__unused__))
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#define MAYBE_UNUSED __attribute__((__unused__))
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#define implement_commit_slab(slabname, elemtype) \
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#define implement_static_commit_slab(slabname, elemtype) \
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implement_commit_slab(slabname, elemtype, static MAYBE_UNUSED)
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#define implement_shared_commit_slab(slabname, elemtype) \
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implement_commit_slab(slabname, elemtype, )
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#define implement_commit_slab(slabname, elemtype, scope) \
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\
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\
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static int stat_ ##slabname## realloc; \
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static int stat_ ##slabname## realloc; \
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\
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\
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static MAYBE_UNUSED void init_ ##slabname## _with_stride(struct slabname *s, \
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scope void init_ ##slabname## _with_stride(struct slabname *s, \
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unsigned stride) \
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unsigned stride) \
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{ \
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{ \
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unsigned int elem_size; \
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unsigned int elem_size; \
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@ -20,12 +26,12 @@ static MAYBE_UNUSED void init_ ##slabname## _with_stride(struct slabname *s, \
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s->slab = NULL; \
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s->slab = NULL; \
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} \
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} \
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\
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\
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static MAYBE_UNUSED void init_ ##slabname(struct slabname *s) \
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scope void init_ ##slabname(struct slabname *s) \
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{ \
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{ \
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init_ ##slabname## _with_stride(s, 1); \
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init_ ##slabname## _with_stride(s, 1); \
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} \
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} \
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\
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\
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static MAYBE_UNUSED void clear_ ##slabname(struct slabname *s) \
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scope void clear_ ##slabname(struct slabname *s) \
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{ \
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{ \
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unsigned int i; \
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unsigned int i; \
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for (i = 0; i < s->slab_count; i++) \
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for (i = 0; i < s->slab_count; i++) \
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@ -34,7 +40,7 @@ static MAYBE_UNUSED void clear_ ##slabname(struct slabname *s) \
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FREE_AND_NULL(s->slab); \
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FREE_AND_NULL(s->slab); \
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} \
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} \
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\
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\
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static MAYBE_UNUSED elemtype *slabname## _at_peek(struct slabname *s, \
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scope elemtype *slabname## _at_peek(struct slabname *s, \
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const struct commit *c, \
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const struct commit *c, \
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int add_if_missing) \
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int add_if_missing) \
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{ \
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{ \
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@ -62,13 +68,13 @@ static MAYBE_UNUSED elemtype *slabname## _at_peek(struct slabname *s, \
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return &s->slab[nth_slab][nth_slot * s->stride]; \
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return &s->slab[nth_slab][nth_slot * s->stride]; \
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} \
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} \
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\
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\
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static MAYBE_UNUSED elemtype *slabname## _at(struct slabname *s, \
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scope elemtype *slabname## _at(struct slabname *s, \
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const struct commit *c) \
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const struct commit *c) \
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{ \
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{ \
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return slabname##_at_peek(s, c, 1); \
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return slabname##_at_peek(s, c, 1); \
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} \
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} \
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\
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\
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static MAYBE_UNUSED elemtype *slabname## _peek(struct slabname *s, \
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scope elemtype *slabname## _peek(struct slabname *s, \
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const struct commit *c) \
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const struct commit *c) \
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{ \
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{ \
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return slabname##_at_peek(s, c, 0); \
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return slabname##_at_peek(s, c, 0); \
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@ -81,7 +87,7 @@ struct slabname
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* to allow a terminating semicolon, which makes instantiations look
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* to allow a terminating semicolon, which makes instantiations look
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* like function declarations. I.e., the expansion of
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* like function declarations. I.e., the expansion of
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*
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*
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* implement_commit_slab(indegree, int);
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* implement_commit_slab(indegree, int, static);
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*
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*
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* ends in 'struct indegree;'. This would otherwise
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* ends in 'struct indegree;'. This would otherwise
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* be a syntax error according (at least) to ISO C. It's hard to
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* be a syntax error according (at least) to ISO C. It's hard to
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@ -46,6 +46,6 @@
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#define define_commit_slab(slabname, elemtype) \
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#define define_commit_slab(slabname, elemtype) \
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declare_commit_slab(slabname, elemtype); \
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declare_commit_slab(slabname, elemtype); \
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implement_commit_slab(slabname, elemtype)
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implement_static_commit_slab(slabname, elemtype)
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#endif /* COMMIT_SLAB_H */
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#endif /* COMMIT_SLAB_H */
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