pkgconf/libpkgconf/cache.c

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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.
*/
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#include <libpkgconf/libpkgconf.h>
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/*
* pkgconf_cache_lookup(id)
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*
* looks up a package in the cache given an 'id' atom,
* such as 'gtk+-3.0' and returns the already loaded version
* if present.
*/
pkgconf_pkg_t *
pkgconf_cache_lookup(const pkgconf_client_t *client, const char *id)
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{
pkgconf_node_t *node;
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PKGCONF_FOREACH_LIST_ENTRY(client->pkg_cache.head, node)
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{
pkgconf_pkg_t *pkg = node->data;
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if (!strcmp(pkg->id, id))
return pkgconf_pkg_ref(client, pkg);
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}
return NULL;
}
/*
* pkgconf_cache_add(pkg)
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*
* adds an entry for the package to the package cache.
* the cache entry must be removed if the package is freed.
*/
void
pkgconf_cache_add(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
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{
if (pkg == NULL)
return;
pkgconf_pkg_ref(client, pkg);
pkgconf_node_insert(&pkg->cache_iter, pkg, &client->pkg_cache);
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}
/*
* pkgconf_cache_remove(pkg)
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*
* deletes a package from the cache entry.
*/
void
pkgconf_cache_remove(pkgconf_client_t *client, pkgconf_pkg_t *pkg)
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{
if (pkg == NULL)
return;
pkgconf_node_delete(&pkg->cache_iter, &client->pkg_cache);
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}
void
pkgconf_cache_free(pkgconf_client_t *client)
{
pkgconf_node_t *iter, *iter2;
PKGCONF_FOREACH_LIST_ENTRY_SAFE(client->pkg_cache.head, iter2, iter)
{
pkgconf_pkg_t *pkg = iter->data;
pkgconf_pkg_free(client, pkg);
}
memset(&client->pkg_cache, 0, sizeof client->pkg_cache);
}