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Merge branch 'ps/reftable-iteration-perf'

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The code to iterate over refs with the reftable backend has seen
some optimization.

* ps/reftable-iteration-perf:
  reftable/reader: add comments to `table_iter_next()`
  reftable/record: don't try to reallocate ref record name
  reftable/block: swap buffers instead of copying
  reftable/pq: allocation-less comparison of entry keys
  reftable/merged: skip comparison for records of the same subiter
  reftable/merged: allocation-less dropping of shadowed records
  reftable/record: introduce function to compare records by key
This commit is contained in:
Junio C Hamano
2024-02-26 18:10:24 -08:00
parent 274400998b c68ca7abd3
commit 9f67cbd0a7
7 changed files with 102 additions and 39 deletions
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7
reftable/record.h
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@ -62,6 +62,12 @@ struct reftable_record_vtable {
/* Are two records equal? This assumes they have the same type. Returns 0 for non-equal. */
int (*equal)(const void *a, const void *b, int hash_size);
/*
* Compare keys of two records with each other. The records must have
* the same type.
*/
int (*cmp)(const void *a, const void *b);
/* Print on stdout, for debugging. */
void (*print)(const void *rec, int hash_size);
};
@ -114,6 +120,7 @@ struct reftable_record {
void reftable_record_init(struct reftable_record *rec, uint8_t typ);
/* see struct record_vtable */
int reftable_record_cmp(struct reftable_record *a, struct reftable_record *b);
int reftable_record_equal(struct reftable_record *a, struct reftable_record *b, int hash_size);
void reftable_record_print(struct reftable_record *rec, int hash_size);
void reftable_record_key(struct reftable_record *rec, struct strbuf *dest);