JS_HashTableRawRemove(JSHashTable *ht, JSHashEntry **hep, JSHashEntry *he)
{
uint32 n;
*hep = he->next;
ht->allocOps->freeEntry(ht->allocPriv, he, HT_FREE_ENTRY);
/* Shrink table if it's underloaded */
n = NBUCKETS(ht);
if (--ht->nentries < UNDERLOADED(n)) {
Resize(ht, ht->shift + 1);
#ifdef JS_HASHMETER
ht->nshrinks++;
#endif
}
}
JS_HashTableEnumerateEntries(JSHashTable *ht, JSHashEnumerator f, void *arg)
{
JSHashEntry *he, **hep, **bucket;
uint32 nlimit, n, nbuckets, newlog2;
int rv;
nlimit = ht->nentries;
n = 0;
for (bucket = ht->buckets; n != nlimit; ++bucket) {
hep = bucket;
while ((he = *hep) != NULL) {
JS_ASSERT(n < nlimit);
rv = f(he, n, arg);
n++;
if (rv & HT_ENUMERATE_REMOVE) {
*hep = he->next;
ht->allocOps->freeEntry(ht->allocPriv, he, HT_FREE_ENTRY);
--ht->nentries;
} else {
hep = &he->next;
}
if (rv & HT_ENUMERATE_STOP) {
goto out;
}
}
}
out:
/* Shrink table if removal of entries made it underloaded */
if (ht->nentries != nlimit) {
JS_ASSERT(ht->nentries < nlimit);
nbuckets = NBUCKETS(ht);
if (MINBUCKETS < nbuckets && ht->nentries < UNDERLOADED(nbuckets)) {
newlog2 = JS_CeilingLog2(ht->nentries);
if (newlog2 < MINBUCKETSLOG2)
newlog2 = MINBUCKETSLOG2;
/* Check that we really shrink the table. */
JS_ASSERT(JS_HASH_BITS - ht->shift > newlog2);
Resize(ht, JS_HASH_BITS - newlog2);
}
}
return (int)n;
}
PL_HashTableRawRemove(PLHashTable *ht, PLHashEntry **hep, PLHashEntry *he)
{
PRUint32 i, n;
PLHashEntry *next, **oldbuckets;
PRSize nb;
*hep = he->next;
(*ht->allocOps->freeEntry)(ht->allocPriv, he, HT_FREE_ENTRY);
/* Shrink table if it's underloaded */
n = NBUCKETS(ht);
if (--ht->nentries < UNDERLOADED(n)) {
oldbuckets = ht->buckets;
nb = n * sizeof(PLHashEntry*) / 2;
ht->buckets = (PLHashEntry**)(
(*ht->allocOps->allocTable)(ht->allocPriv, nb));
if (!ht->buckets) {
ht->buckets = oldbuckets;
return;
}
memset(ht->buckets, 0, nb);
#ifdef HASHMETER
ht->nshrinks++;
#endif
ht->shift++;
for (i = 0; i < n; i++) {
for (he = oldbuckets[i]; he; he = next) {
next = he->next;
hep = PL_HashTableRawLookup(ht, he->keyHash, he->key);
PR_ASSERT(*hep == 0);
he->next = 0;
*hep = he;
}
}
#ifdef DEBUG
memset(oldbuckets, 0xDB, n * sizeof oldbuckets[0]);
#endif
(*ht->allocOps->freeTable)(ht->allocPriv, oldbuckets);
}
}
