LineageOS/android_external_json-c
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Define a LH_LOAD_FACTOR constant and note the range that it can be set to.

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Change the resize check from "count > size" to "count >= size" to avoid a
potential infinite loop with high load factors and a full hash table.
This commit is contained in:
Eric Haszlakiewicz
2012-03-31 17:33:58 -05:00
parent aef439a175
commit 64c0ca3690
2 changed files with 8 additions and 1 deletions
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2
linkhash.c
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@@ -125,7 +125,7 @@ int lh_table_insert(struct lh_table *t, void *k, const void *v)
unsigned long h, n; unsigned long h, n;
t->inserts++; t->inserts++;
if(t->count > t->size * 0.66) lh_table_resize(t, t->size * 2); if(t->count >= t->size * LH_LOAD_FACTOR) lh_table_resize(t, t->size * 2);
h = t->hash_fn(k); h = t->hash_fn(k);
n = h % t->size; n = h % t->size;

7
linkhash.h
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@@ -21,6 +21,13 @@ extern "C" {
*/ */
#define LH_PRIME 0x9e370001UL #define LH_PRIME 0x9e370001UL
/**
* The fraction of filled hash buckets until an insert will cause the table
* to be resized.
* This can range from just above 0 up to 1.0.
*/
#define LH_LOAD_FACTOR 0.66
/** /**
* sentinel pointer value for empty slots * sentinel pointer value for empty slots
*/ */