Contextualize comment.

[redis.git] / src / dict.c

diff --git a/src/dict.c b/src/dict.c
index a573bcd6e3575477f1e58c67811b46122972de88..53e16be0ff22a1090cee4449c8813ce37050cc13 100644 (file)
--- a/src/dict.c
+++ b/src/dict.c
@@ -85,10 +85,20 @@ unsigned int dictIdentityHashFunction(unsigned int key)
     return key;
 }
 
     return key;
 }
 

+static int dict_hash_function_seed = 5381;
+
+void dictSetHashFunctionSeed(unsigned int seed) {
+    dict_hash_function_seed = seed;
+}
+
+unsigned int dictGetHashFunctionSeed(void) {
+    return dict_hash_function_seed;
+}
+

 /* Generic hash function (a popular one from Bernstein).
  * I tested a few and this was the best. */
 unsigned int dictGenHashFunction(const unsigned char *buf, int len) {
 /* Generic hash function (a popular one from Bernstein).
  * I tested a few and this was the best. */
 unsigned int dictGenHashFunction(const unsigned char *buf, int len) {

-    unsigned int hash = 5381;
+    unsigned int hash = dict_hash_function_seed;

 
     while (len--)
         hash = ((hash << 5) + hash) + (*buf++); /* hash * 33 + c */
 
     while (len--)
         hash = ((hash << 5) + hash) + (*buf++); /* hash * 33 + c */


@@ -97,7 +107,7 @@ unsigned int dictGenHashFunction(const unsigned char *buf, int len) {
 
 /* And a case insensitive version */
 unsigned int dictGenCaseHashFunction(const unsigned char *buf, int len) {
 
 /* And a case insensitive version */
 unsigned int dictGenCaseHashFunction(const unsigned char *buf, int len) {

-    unsigned int hash = 5381;
+    unsigned int hash = dict_hash_function_seed;

 
     while (len--)
         hash = ((hash << 5) + hash) + (tolower(*buf++)); /* hash * 33 + c */
 
     while (len--)
         hash = ((hash << 5) + hash) + (tolower(*buf++)); /* hash * 33 + c */