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dict.c: prevent useless resize to same size.

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Related to issue #2306.
This commit is contained in:
antirez 2015-02-05 10:42:09 +01:00
parent 170e41464d
commit 777020839a
1 changed files with 3 additions and 0 deletions
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src/dict.c
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@ -211,6 +211,9 @@ int dictExpand(dict *d, unsigned long size)
if (dictIsRehashing(d) || d->ht[0].used > size) if (dictIsRehashing(d) || d->ht[0].used > size)
return DICT_ERR; return DICT_ERR;
/* Rehashing to the same table size is not useful. */
if (realsize == d->ht[0].size) return DICT_ERR;
/* Allocate the new hash table and initialize all pointers to NULL */ /* Allocate the new hash table and initialize all pointers to NULL */
n.size = realsize; n.size = realsize;
n.sizemask = realsize-1; n.sizemask = realsize-1;