2b4c022925
This commit adds an iterator interface for reading files from the
syncdbs. Instead of using alpm_pkg_get_files(), you now get the files
from the database using alpm_db_files_open(), you then use
alpm_db_files_next() to iterate through the files for each package. If
you want to actually load the files from that package you then use
alpm_db_files_load().
This means alpm_pkg_get_files() will always return empty for syncdbs,
even on .files databases, however these functions still work on the
localdb and loaded packages.
This aproach is faster when dumping the entire file list but slower when
searching for a specific package.
The memory usage of pacman is drastically less. See below.
build/pacman -Fl 0.55s user 0.01s system 99% cpu 0.556 total
build/pacman -Fl pacman 0.46s user 0.01s system 99% cpu 0.472 total
build/pacman -Fx pacman 2.88s user 0.09s system 99% cpu 2.965 total
pacman -Fl 1.60s user 0.13s system 99% cpu 1.731 total
pacman -Fl pacman 0.24s user 0.04s system 99% cpu 0.283 total
pacman -Fx pacman 2.45s user 0.14s system 99% cpu 2.593 total
Peak Memory
build/pacman -Fl 43.52MB
build/pacman -Fl pacmam 11.292MB
pacman -Fl 677.048MB
pacman -Fl pacman 163.288MB
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
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* db.h
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*
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* Copyright (c) 2006-2021 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2002-2006 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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/* libarchive */
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#include <archive.h>
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#include <archive_entry.h>
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#include "alpm.h"
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#include "pkghash.h"
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#include "signing.h"
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/* Database entries */
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typedef enum _alpm_dbinfrq_t {
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INFRQ_BASE = (1 << 0),
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INFRQ_DESC = (1 << 1),
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INFRQ_FILES = (1 << 2),
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INFRQ_SCRIPTLET = (1 << 3),
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INFRQ_DSIZE = (1 << 4),
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/* ALL should be info stored in the package or database */
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INFRQ_ALL = INFRQ_BASE | INFRQ_DESC | INFRQ_FILES |
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INFRQ_SCRIPTLET | INFRQ_DSIZE,
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INFRQ_ERROR = (1 << 30)
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} alpm_dbinfrq_t;
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/** Database status. Bitflags. */
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enum _alpm_dbstatus_t {
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DB_STATUS_VALID = (1 << 0),
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DB_STATUS_INVALID = (1 << 1),
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DB_STATUS_EXISTS = (1 << 2),
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DB_STATUS_MISSING = (1 << 3),
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DB_STATUS_LOCAL = (1 << 10),
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DB_STATUS_PKGCACHE = (1 << 11),
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DB_STATUS_GRPCACHE = (1 << 12)
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};
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struct db_operations {
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int (*validate) (alpm_db_t *);
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int (*populate) (alpm_db_t *);
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void (*unregister) (alpm_db_t *);
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};
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/* Database files iterator */
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struct __alpm_db_files_t {
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struct archive *archive;
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int fd;
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alpm_db_t *db;
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};
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/* Database */
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struct _alpm_db_t {
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alpm_handle_t *handle;
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char *treename;
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/* do not access directly, use _alpm_db_path(db) for lazy access */
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char *_path;
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alpm_pkghash_t *pkgcache;
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alpm_list_t *grpcache;
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alpm_list_t *servers;
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const struct db_operations *ops;
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/* bitfields for validity, local, loaded caches, etc. */
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/* From _alpm_dbstatus_t */
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int status;
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/* alpm_siglevel_t */
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int siglevel;
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/* alpm_db_usage_t */
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int usage;
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};
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/* db.c, database general calls */
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alpm_db_t *_alpm_db_new(const char *treename, int is_local);
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void _alpm_db_free(alpm_db_t *db);
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const char *_alpm_db_path(alpm_db_t *db);
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int _alpm_db_cmp(const void *d1, const void *d2);
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int _alpm_db_search(alpm_db_t *db, const alpm_list_t *needles,
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alpm_list_t **ret);
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alpm_db_t *_alpm_db_register_local(alpm_handle_t *handle);
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alpm_db_t *_alpm_db_register_sync(alpm_handle_t *handle, const char *treename,
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int level);
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void _alpm_db_unregister(alpm_db_t *db);
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/* be_*.c, backend specific calls */
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int _alpm_local_db_prepare(alpm_db_t *db, alpm_pkg_t *info);
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int _alpm_local_db_write(alpm_db_t *db, alpm_pkg_t *info, int inforeq);
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int _alpm_local_db_remove(alpm_db_t *db, alpm_pkg_t *info);
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char *_alpm_local_db_pkgpath(alpm_db_t *db, alpm_pkg_t *info, const char *filename);
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/* cache bullshit */
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/* packages */
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void _alpm_db_free_pkgcache(alpm_db_t *db);
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int _alpm_db_add_pkgincache(alpm_db_t *db, alpm_pkg_t *pkg);
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int _alpm_db_remove_pkgfromcache(alpm_db_t *db, alpm_pkg_t *pkg);
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alpm_pkghash_t *_alpm_db_get_pkgcache_hash(alpm_db_t *db);
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alpm_list_t *_alpm_db_get_pkgcache(alpm_db_t *db);
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alpm_pkg_t *_alpm_db_get_pkgfromcache(alpm_db_t *db, const char *target);
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/* groups */
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alpm_list_t *_alpm_db_get_groupcache(alpm_db_t *db);
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alpm_group_t *_alpm_db_get_groupfromcache(alpm_db_t *db, const char *target);
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#endif /* ALPM_DB_H */
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