git/commit-slab-decl.h
Junio C Hamano de6dda0dc3 Merge branch 'sg/commit-graph-cleanups' into master
The changed-path Bloom filter is improved using ideas from an
independent implementation.

* sg/commit-graph-cleanups:
  commit-graph: simplify write_commit_graph_file() #2
  commit-graph: simplify write_commit_graph_file() #1
  commit-graph: simplify parse_commit_graph() #2
  commit-graph: simplify parse_commit_graph() #1
  commit-graph: clean up #includes
  diff.h: drop diff_tree_oid() & friends' return value
  commit-slab: add a function to deep free entries on the slab
  commit-graph-format.txt: all multi-byte numbers are in network byte order
  commit-graph: fix parsing the Chunk Lookup table
  tree-walk.c: don't match submodule entries for 'submod/anything'
2020-07-30 13:20:30 -07:00

44 lines
1.4 KiB
C

#ifndef COMMIT_SLAB_DECL_H
#define COMMIT_SLAB_DECL_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); \
void deep_clear_ ##slabname(struct slabname *s, void (*free_fn)(elemtype *ptr)); \
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_DECL_H */