mirror of
https://github.com/git/git
synced 2024-10-30 14:03:28 +00:00
81879123c3
While the stack length is already stored as `size_t`, we frequently use `int`s to refer to those stacks throughout the reftable library. Convert those cases to use `size_t` instead to make things consistent. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
72 lines
2.5 KiB
C
72 lines
2.5 KiB
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 REFTABLE_MERGED_H
|
|
#define REFTABLE_MERGED_H
|
|
|
|
#include "reftable-iterator.h"
|
|
|
|
/*
|
|
* Merged tables
|
|
*
|
|
* A ref database kept in a sequence of table files. The merged_table presents a
|
|
* unified view to reading (seeking, iterating) a sequence of immutable tables.
|
|
*
|
|
* The merged tables are on purpose kept disconnected from their actual storage
|
|
* (eg. files on disk), because it is useful to merge tables aren't files. For
|
|
* example, the per-workspace and global ref namespace can be implemented as a
|
|
* merged table of two stacks of file-backed reftables.
|
|
*/
|
|
|
|
/* A merged table is implements seeking/iterating over a stack of tables. */
|
|
struct reftable_merged_table;
|
|
|
|
/* A generic reftable; see below. */
|
|
struct reftable_table;
|
|
|
|
/* reftable_new_merged_table creates a new merged table. It takes ownership of
|
|
the stack array.
|
|
*/
|
|
int reftable_new_merged_table(struct reftable_merged_table **dest,
|
|
struct reftable_table *stack, size_t n,
|
|
uint32_t hash_id);
|
|
|
|
/* returns an iterator positioned just before 'name' */
|
|
int reftable_merged_table_seek_ref(struct reftable_merged_table *mt,
|
|
struct reftable_iterator *it,
|
|
const char *name);
|
|
|
|
/* returns an iterator for log entry, at given update_index */
|
|
int reftable_merged_table_seek_log_at(struct reftable_merged_table *mt,
|
|
struct reftable_iterator *it,
|
|
const char *name, uint64_t update_index);
|
|
|
|
/* like reftable_merged_table_seek_log_at but look for the newest entry. */
|
|
int reftable_merged_table_seek_log(struct reftable_merged_table *mt,
|
|
struct reftable_iterator *it,
|
|
const char *name);
|
|
|
|
/* returns the max update_index covered by this merged table. */
|
|
uint64_t
|
|
reftable_merged_table_max_update_index(struct reftable_merged_table *mt);
|
|
|
|
/* returns the min update_index covered by this merged table. */
|
|
uint64_t
|
|
reftable_merged_table_min_update_index(struct reftable_merged_table *mt);
|
|
|
|
/* releases memory for the merged_table */
|
|
void reftable_merged_table_free(struct reftable_merged_table *m);
|
|
|
|
/* return the hash ID of the merged table. */
|
|
uint32_t reftable_merged_table_hash_id(struct reftable_merged_table *m);
|
|
|
|
/* create a generic table from reftable_merged_table */
|
|
void reftable_table_from_merged_table(struct reftable_table *tab,
|
|
struct reftable_merged_table *table);
|
|
|
|
#endif
|