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https://github.com/moparisthebest/pacman
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cb7337eb64
Clearly the old code was more elegant (NULL cache indicated "not loaded"), but it had some drawbacks, so from now on we indicate the state of caches explicitly. Old drawbacks: When we had an empty database (unstable), libalpm called db_populate after every pkgcache access, because NULL pkgcache indicated "not loaded" state. This is not a common case, but the same situation can happen with grpcache, which is more problematic: If the user had a custom repo with no groups, grpcache was always NULL. (grpcache is also loaded per database.) Thus every get_grpcache call induced a load_grpcache operation, so the benefits of grpcache was completely lost. Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu> Signed-off-by: Dan McGee <dan@archlinux.org>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
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* db.h
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*
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* Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
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* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
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* Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ALPM_DB_H
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#define _ALPM_DB_H
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#include "alpm.h"
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#include <limits.h>
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#include <time.h>
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/* Database entries */
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typedef enum _pmdbinfrq_t {
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INFRQ_BASE = 0x01,
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INFRQ_DESC = 0x02,
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INFRQ_DEPENDS = 0x04,
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INFRQ_FILES = 0x08,
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INFRQ_SCRIPTLET = 0x10,
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INFRQ_DELTAS = 0x20,
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/* ALL should be sum of all above */
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INFRQ_ALL = 0x3F
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} pmdbinfrq_t;
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/* Database */
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struct __pmdb_t {
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char *path;
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char *treename;
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void *handle;
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unsigned short pkgcache_loaded;
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alpm_list_t *pkgcache;
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unsigned short grpcache_loaded;
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alpm_list_t *grpcache;
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alpm_list_t *servers;
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};
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/* db.c, database general calls */
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pmdb_t *_alpm_db_new(const char *dbpath, const char *treename);
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void _alpm_db_free(pmdb_t *db);
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int _alpm_db_cmp(const void *d1, const void *d2);
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alpm_list_t *_alpm_db_search(pmdb_t *db, const alpm_list_t *needles);
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pmdb_t *_alpm_db_register_local(void);
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pmdb_t *_alpm_db_register_sync(const char *treename);
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/* be.c, backend specific calls */
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int _alpm_db_open(pmdb_t *db);
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void _alpm_db_close(pmdb_t *db);
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int _alpm_db_populate(pmdb_t *db);
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int _alpm_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq);
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int _alpm_db_prepare(pmdb_t *db, pmpkg_t *info);
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int _alpm_db_write(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq);
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int _alpm_db_remove(pmdb_t *db, pmpkg_t *info);
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#endif /* _ALPM_DB_H */
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/* vim: set ts=2 sw=2 noet: */
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