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Clear the cache when there are too many items to expire

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This commit is contained in:
Vicent Marti 2013-04-05 22:38:14 +02:00
parent e16e268457
commit e183e375b8
1 changed files with 20 additions and 1 deletions
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21
src/cache.c
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@ -63,14 +63,33 @@ void git_cache_free(git_cache *cache)
git_mutex_free(&cache->lock);
}
void git_cache_clear(git_cache *cache)
{
git_cached_obj *evict = NULL;
if (git_mutex_lock(&cache->lock) < 0)
return;
kh_foreach_value(cache->map, evict, {
git_cached_obj_decref(evict);
});
kh_clear(oid, cache->map);
cache->used_memory = 0;
git_mutex_unlock(&cache->lock);
}
/* Call with lock, yo */
static void cache_evict_entries(git_cache *cache, size_t evict_count)
{
uint32_t seed = rand();
/* do not infinite loop if there's not enough entries to evict */
if (evict_count > kh_size(cache->map))
if (evict_count > kh_size(cache->map)) {
git_cache_clear(cache);
return;
}
while (evict_count > 0) {
khiter_t pos = seed++ % kh_end(cache->map);