From ce5471511257ada996bfcb6ea4236cd89c0d6890 Mon Sep 17 00:00:00 2001 From: Dan McGee Date: Fri, 28 Jan 2011 12:03:36 -0600 Subject: Implement a quick and dirty rehash function This allows us to get through the rehash required by smoke001 and pass all pactests. It is by no means the best or most efficient implementation but it does do the job. Signed-off-by: Dan McGee --- lib/libalpm/pkghash.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) (limited to 'lib/libalpm') diff --git a/lib/libalpm/pkghash.c b/lib/libalpm/pkghash.c index 3ed6453f..f2497070 100644 --- a/lib/libalpm/pkghash.c +++ b/lib/libalpm/pkghash.c @@ -77,9 +77,9 @@ pmpkghash_t *_alpm_pkghash_create(size_t size) /* Expand the hash table size to the next increment and rebin the entries */ static pmpkghash_t *rehash(pmpkghash_t *oldhash) { - //pmpkghash_t *newhash; - - /* TODO - calculate size of newhash */ + pmpkghash_t *newhash; + alpm_list_t *ptr; + size_t newsize; /* Hash tables will need resized in two cases: * - adding packages to the local database * - poor estimation of the number of packages in sync database @@ -89,17 +89,22 @@ static pmpkghash_t *rehash(pmpkghash_t *oldhash) * larger database sizes, this increase is reduced to avoid excess * memory allocation as both scenarios requiring a rehash should not * require a table size increase that large. */ + if(oldhash->buckets < 500) { + newsize = oldhash->buckets * 2; + } else if(oldhash->buckets < 3500) { + newsize = oldhash->buckets * 3 / 2; + } else { + newsize = oldhash->buckets * 4 / 3; + } - //newhash = _alpm_pkghash_create(oldhash->buckets); - - /* TODO - rebin entries */ - - //_alpm_pkghash_free(oldhash); + newhash = _alpm_pkghash_create(newsize); + for(ptr = oldhash->list; ptr != NULL; ptr = ptr->next) { + newhash = _alpm_pkghash_add(newhash, ptr->data); + } - //return newhash; + _alpm_pkghash_free(oldhash); - printf("rehash needed!!!\n"); - return(oldhash); + return(newhash); } pmpkghash_t *_alpm_pkghash_add(pmpkghash_t *hash, pmpkg_t *pkg) -- cgit v1.2.3-24-g4f1b