cache: add high-level cache API

feature/tap-sh
William Pitcock 2013-02-25 17:36:09 -06:00
parent de29503013
commit 9439b02936
3 changed files with 84 additions and 1 deletions

View File

@ -11,7 +11,7 @@ pkgconfigdir = @PKGCONFIGDIR@
CC = @CC@
PROG = pkgconf@EXEEXT@
SRCS = main.c pkg.c bsdstubs.c getopt_long.c fragment.c argvsplit.c fileio.c tuple.c dependency.c queue.c
SRCS = main.c cache.c pkg.c bsdstubs.c getopt_long.c fragment.c argvsplit.c fileio.c tuple.c dependency.c queue.c
OBJS = ${SRCS:.c=.o}
GCOV_OBJS = ${SRCS:.c=.og}
CFLAGS = @CFLAGS@

78
cache.c Normal file
View File

@ -0,0 +1,78 @@
/*
* cache.c
* package object cache
*
* Copyright (c) 2013 pkgconf authors (see AUTHORS).
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* This software is provided 'as is' and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising
* from the use of this software.
*/
#include "pkg.h"
static pkg_t *pkg_cache = NULL;
/*
* pkg_cache_lookup(id)
*
* looks up a package in the cache given an 'id' atom,
* such as 'gtk+-3.0' and returns the already loaded version
* if present.
*/
pkg_t *
pkg_cache_lookup(const char *id)
{
pkg_t *pkg;
PKG_FOREACH_LIST_ENTRY(pkg_cache, pkg)
{
if (!strcmp(pkg->id, id))
return pkg;
}
return NULL;
}
/*
* pkg_cache_add(pkg)
*
* adds an entry for the package to the package cache.
* the cache entry must be removed if the package is freed.
*/
void
pkg_cache_add(pkg_t *pkg)
{
pkg->next = pkg_cache;
pkg_cache = pkg;
if (pkg->next != NULL)
pkg->next->prev = pkg;
}
/*
* pkg_cache_delete
*
* deletes a package from the cache entry.
*/
void
pkg_cache_delete(pkg_t *pkg)
{
if (pkg->prev != NULL)
pkg->prev->next = pkg->next;
if (pkg->next != NULL)
pkg->next->prev = pkg->prev;
if (pkg == pkg_cache)
{
if (pkg->prev != NULL)
pkg_cache = pkg->prev;
else
pkg_cache = pkg->next;
}
}

5
pkg.h
View File

@ -187,4 +187,9 @@ void pkg_queue_free(pkg_queue_t *head);
bool pkg_queue_apply(pkg_queue_t *head, pkg_queue_apply_func_t func, int maxdepth, unsigned int flags, void *data);
bool pkg_queue_validate(pkg_queue_t *head, int maxdepth, unsigned int flags);
/* cache.c */
pkg_t *pkg_cache_lookup(const char *id);
void pkg_cache_add(pkg_t *pkg);
void pkg_cache_remove(pkg_t *pkg);
#endif