From a551a8a219e9d8ac1ba3bf279c435204af335a57 Mon Sep 17 00:00:00 2001
From: Justin Ethier <justin.ethier@gmail.com>
Date: Fri, 7 May 2021 18:58:58 -0700
Subject: [PATCH] Sync changes

---
 ck-polyfill.c | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/ck-polyfill.c b/ck-polyfill.c
index e50fc74a..49a6e485 100644
--- a/ck-polyfill.c
+++ b/ck-polyfill.c
@@ -58,15 +58,18 @@ void *ck_hs_get(ck_hs_t *_hs, unsigned long hash, const void *key)
 bool ck_hs_put(ck_hs_t *_hs, unsigned long hash, const void *key)
 {
   bool result = false;
-  int rv;
+  int rv, index;
   simple_hashset_t hs = (*_hs).hs;
 
   pthread_mutex_lock(&((*_hs).lock));
 
-  rv = simple_hashset_add(hs, (symbol_type *)key);
-  if (rv >= 0) {
-    result = true;
-  }
+  //index = simple_hashset_is_member(hs, (symbol_type *)key);
+  //if (index == 0) {
+    rv = simple_hashset_add(hs, (symbol_type *)key);
+    if (rv >= 0) {
+      result = true;
+    }
+  //}
 
   pthread_mutex_unlock(&((*_hs).lock));
   return result;
@@ -253,11 +256,14 @@ void ck_pr_store_ptr(void *target, void *value)
 static const size_t prime_1 = 73;
 static const size_t prime_2 = 5009;
 
-size_t hash_function(const char* p, size_t len)
-{
-    size_t hash = 0;
-    for (; *p; ++p)
-        hash ^= *p + 0x9e3779b9 + (hash << 6) + (hash >> 2);
+size_t hash_function(const char* str, size_t len) {
+    unsigned long hash = 5381;
+    int c;
+
+    while (c = *str++) {
+        hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+    }
+
     return hash;
 }