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/*
* 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_list_t pkg_cache = PKG_LIST_INITIALIZER;
/*
* 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_node_t *node;
PKG_FOREACH_LIST_ENTRY(pkg_cache.head, node)
{
pkg_t *pkg = node->data;
if (!strcmp(pkg->id, id))
return pkg_ref(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)
{
if (pkg == NULL)
return;
pkg_ref(pkg);
pkg_node_insert(&pkg->cache_iter, pkg, &pkg_cache);
}
/*
* pkg_cache_remove(pkg)
*
* deletes a package from the cache entry.
*/
void
pkg_cache_remove(pkg_t *pkg)
{
if (pkg == NULL)
return;
pkg_node_delete(&pkg->cache_iter, &pkg_cache);
}
void
pkg_cache_free(void)
{
pkg_node_t *iter, *iter2;
PKG_FOREACH_LIST_ENTRY_SAFE(pkg_cache.head, iter2, iter)
{
pkg_t *pkg = iter->data;
pkg_free(pkg);
}
}
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