mirror of
https://github.com/git/git.git
synced 2024-12-01 05:54:16 +08:00
878f0bb819
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>
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
#ifndef COMMIT_SLAB_HDR_H
|
|
#define COMMIT_SLAB_HDR_H
|
|
|
|
/* allocate ~512kB at once, allowing for malloc overhead */
|
|
#ifndef COMMIT_SLAB_SIZE
|
|
#define COMMIT_SLAB_SIZE (512*1024-32)
|
|
#endif
|
|
|
|
#define declare_commit_slab(slabname, elemtype) \
|
|
\
|
|
struct slabname { \
|
|
unsigned slab_size; \
|
|
unsigned stride; \
|
|
unsigned slab_count; \
|
|
elemtype **slab; \
|
|
}
|
|
|
|
/*
|
|
* 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 \
|
|
}
|
|
|
|
#define declare_commit_slab_prototypes(slabname, elemtype) \
|
|
\
|
|
void init_ ##slabname## _with_stride(struct slabname *s, unsigned stride); \
|
|
void init_ ##slabname(struct slabname *s); \
|
|
void clear_ ##slabname(struct slabname *s); \
|
|
elemtype *slabname## _at_peek(struct slabname *s, const struct commit *c, int add_if_missing); \
|
|
elemtype *slabname## _at(struct slabname *s, const struct commit *c); \
|
|
elemtype *slabname## _peek(struct slabname *s, const struct commit *c)
|
|
|
|
#define define_shared_commit_slab(slabname, elemtype) \
|
|
declare_commit_slab(slabname, elemtype); \
|
|
declare_commit_slab_prototypes(slabname, elemtype)
|
|
|
|
#endif /* COMMIT_SLAB_HDR_H */
|