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pack-objects: free preferred base memory after usage

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When adding objects for preferred delta base, the content from tree
objects leading to given paths is kept in a cache. This has the
potential to grow significantly, especially with large directories as
the whole tree object content is loaded in memory, even if in practice
the number of those objects is limited to the 256 cache entries plus the
$window root tree objects.  Still, that can't hurt freeing that up after
object enumeration is done, and before more memory is needed for delta
search.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nicolas Pitre 2009-09-03 21:54:03 -04:00 committed by Junio C Hamano
parent 6523078b96
commit 0ef95f72f8
1 changed files with 28 additions and 0 deletions
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28
builtin-pack-objects.c
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@ -1012,6 +1012,33 @@ static void add_preferred_base(unsigned char *sha1)
it->pcache.tree_size = size;
}
static void cleanup_preferred_base(void)
{
struct pbase_tree *it;
unsigned i;
it = pbase_tree;
pbase_tree = NULL;
while (it) {
struct pbase_tree *this = it;
it = this->next;
free(this->pcache.tree_data);
free(this);
}
for (i = 0; i < ARRAY_SIZE(pbase_tree_cache); i++) {
if (!pbase_tree_cache[i])
continue;
free(pbase_tree_cache[i]->tree_data);
free(pbase_tree_cache[i]);
pbase_tree_cache[i] = NULL;
}
free(done_pbase_paths);
done_pbase_paths = NULL;
done_pbase_paths_num = done_pbase_paths_alloc = 0;
}
static void check_object(struct object_entry *entry)
{
if (entry->in_pack) {
@ -2308,6 +2335,7 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
rp_av[rp_ac] = NULL;
get_object_list(rp_ac, rp_av);
}
cleanup_preferred_base();
if (include_tag && nr_result)
for_each_ref(add_ref_tag, NULL);
stop_progress(&progress_state);