libalpm/cache.c : don't duplicate packages in pkgcache.

Edit _alpm_db_add_pkgincache to not duplicate packages, because this is not
needed, is slower, and uses more memory. This made the max memory usage
during base reinstall go from 10.4MB to 9.7MB.

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 3 insertions, 12 deletions

diff --git a/lib/libalpm/cache.c b/lib/libalpm/cache.c
index 0ad923a5..09fa74c2 100644
--- a/lib/libalpm/cache.c
+++ b/lib/libalpm/cache.c
@@ -81,10 +81,7 @@ void _alpm_db_free_pkgcache(pmdb_t *db)
 	_alpm_log(PM_LOG_DEBUG, "freeing package cache for repository '%s'\n",
 	                        db->treename);
 
-	alpm_list_t *tmp;
-	for(tmp = db->pkgcache; tmp; tmp = alpm_list_next(tmp)) {
-		_alpm_pkg_free(tmp->data);
-	}
+	alpm_list_free_inner(db->pkgcache, (alpm_list_fn_free)_alpm_pkg_free);
 	alpm_list_free(db->pkgcache);
 	db->pkgcache = NULL;
 
@@ -115,21 +112,15 @@ alpm_list_t *_alpm_db_get_pkgcache(pmdb_t *db)
 
 int _alpm_db_add_pkgincache(pmdb_t *db, pmpkg_t *pkg)
 {
-	pmpkg_t *newpkg;
-
 	ALPM_LOG_FUNC;
 
 	if(db == NULL || pkg == NULL) {
 		return(-1);
 	}
 
-	newpkg = _alpm_pkg_dup(pkg);
-	if(newpkg == NULL) {
-		return(-1);
-	}
 	_alpm_log(PM_LOG_DEBUG, "adding entry '%s' in '%s' cache\n",
-						alpm_pkg_get_name(newpkg), db->treename);
-	db->pkgcache = alpm_list_add_sorted(db->pkgcache, newpkg, _alpm_pkg_cmp);
+						alpm_pkg_get_name(pkg), db->treename);
+	db->pkgcache = alpm_list_add_sorted(db->pkgcache, pkg, _alpm_pkg_cmp);
 
 	_alpm_db_free_grpcache(db);