mirror of
https://github.com/git/git.git
synced 2024-10-30 13:57:54 +01:00
4651ece854
This makes the tree descriptor contain a "struct name_entry" as part of it, and it gets filled in so that it always contains a valid entry. On some benchmarks, it improves performance by up to 15%. That makes tree entry "extract" trivial, and means that we only actually need to decode each tree entry just once: we decode the first one when we initialize the tree descriptor, and each subsequent one when doing "update_tree_entry()". In particular, this means that we don't need to do strlen() both at extract time _and_ at update time. Finally, it also allows more sharing of code (entry_extract(), that wanted a "struct name_entry", just got totally trivial, along with the "tree_entry()" function). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#ifndef TREE_WALK_H
|
|
#define TREE_WALK_H
|
|
|
|
struct name_entry {
|
|
const unsigned char *sha1;
|
|
const char *path;
|
|
unsigned int mode;
|
|
};
|
|
|
|
struct tree_desc {
|
|
const void *buffer;
|
|
struct name_entry entry;
|
|
unsigned int size;
|
|
};
|
|
|
|
static inline const unsigned char *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
|
|
{
|
|
*pathp = desc->entry.path;
|
|
*modep = canon_mode(desc->entry.mode);
|
|
return desc->entry.sha1;
|
|
}
|
|
|
|
static inline int tree_entry_len(const char *name, const unsigned char *sha1)
|
|
{
|
|
return (char *)sha1 - (char *)name - 1;
|
|
}
|
|
|
|
void update_tree_entry(struct tree_desc *);
|
|
void init_tree_desc(struct tree_desc *desc, const void *buf, unsigned long size);
|
|
const unsigned char *tree_entry_extract(struct tree_desc *, const char **, unsigned int *);
|
|
|
|
/* Helper function that does both of the above and returns true for success */
|
|
int tree_entry(struct tree_desc *, struct name_entry *);
|
|
|
|
void *fill_tree_descriptor(struct tree_desc *desc, const unsigned char *sha1);
|
|
|
|
typedef void (*traverse_callback_t)(int n, unsigned long mask, struct name_entry *entry, const char *base);
|
|
|
|
void traverse_trees(int n, struct tree_desc *t, const char *base, traverse_callback_t callback);
|
|
|
|
int get_tree_entry(const unsigned char *, const char *, unsigned char *, unsigned *);
|
|
|
|
#endif
|