git/reftable/pq.h
Elijah Conners c18eecbe5c reftable: use a pointer for pq_entry param
The speed of the merged_iter_pqueue_add() can be improved by using a
pointer to the pq_entry struct, which is 96 bytes. Since the pq_entry
param is worked directly on the stack and does not currently have a
pointer to it, the merged_iter_pqueue_add() function is slightly
slower.

References to pq_entry in reftable have typically included pointers,
such as both of the params for pq_less().

Since we are working with pointers in the pq_entry param, as keenly
pointed out, the pq_entry param has also been made into a const since
the contents of the pq_entry param are copied and not manipulated.

Signed-off-by: Elijah Conners <business@elijahpepe.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-09-15 11:32:37 -07:00

33 lines
864 B
C

/*
Copyright 2020 Google LLC
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file or at
https://developers.google.com/open-source/licenses/bsd
*/
#ifndef PQ_H
#define PQ_H
#include "record.h"
struct pq_entry {
int index;
struct reftable_record rec;
};
struct merged_iter_pqueue {
struct pq_entry *heap;
size_t len;
size_t cap;
};
struct pq_entry merged_iter_pqueue_top(struct merged_iter_pqueue pq);
int merged_iter_pqueue_is_empty(struct merged_iter_pqueue pq);
void merged_iter_pqueue_check(struct merged_iter_pqueue pq);
struct pq_entry merged_iter_pqueue_remove(struct merged_iter_pqueue *pq);
void merged_iter_pqueue_add(struct merged_iter_pqueue *pq, const struct pq_entry *e);
void merged_iter_pqueue_release(struct merged_iter_pqueue *pq);
int pq_less(struct pq_entry *a, struct pq_entry *b);
#endif