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Merge pull request #1244 from carlosmn/pack-evict

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A comparison of eviction algorithms for the delta base cache
This commit is contained in:
Vicent Martí 2013-01-17 13:45:52 -08:00
commit 75f49ae49b
1 changed files with 7 additions and 12 deletions
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19
src/pack.c
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@ -119,26 +119,21 @@ static git_pack_cache_entry *cache_get(git_pack_cache *cache, git_off_t offset)
/* Run with the cache lock held */
static void free_lowest_entry(git_pack_cache *cache)
{
git_pack_cache_entry *lowest = NULL, *entry;
khiter_t k, lowest_k;
git_pack_cache_entry *entry;
khiter_t k;
for (k = kh_begin(cache->entries); k != kh_end(cache->entries); k++) {
if (!kh_exist(cache->entries, k))
continue;
entry = kh_value(cache->entries, k);
if (lowest == NULL || entry->last_usage < lowest->last_usage) {
lowest_k = k;
lowest = entry;
if (entry && entry->refcount.val == 0) {
cache->memory_used -= entry->raw.len;
kh_del(off, cache->entries, k);
free_cache_object(entry);
}
}
if (!lowest) /* there's nothing to free */
return;
cache->memory_used -= lowest->raw.len;
kh_del(off, cache->entries, lowest_k);
free_cache_object(lowest);
}
static int cache_add(git_pack_cache *cache, git_rawobj *base, git_off_t offset)