The R13B03 release.OTP_R13B03

1 files changed, 52 insertions, 0 deletions

diff --git a/lib/erl_interface/src/registry/hash_newtab.c b/lib/erl_interface/src/registry/hash_newtab.c
new file mode 100644
index 0000000000..b900de1f69
--- /dev/null
+++ b/lib/erl_interface/src/registry/hash_newtab.c
@@ -0,0 +1,52 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ *
+
+ */
+#include <stdlib.h>
+#include <string.h>
+#include "hash.h"
+
+ei_hash *ei_hash_newtab(int tabsize)
+{
+  ei_hash *tab=NULL;
+  int bucketpos=sizeof(*tab);
+  
+  /* make sure size is odd, then increase until prime */
+  tabsize |= 0x1; 
+  while (!ei_isprime(tabsize)) tabsize +=2;
+
+  /* we will only do one malloc, so "sizeof(*tab)" 
+   * must be adjusted to align tab->tab properly
+   */
+  ei_align(bucketpos);
+
+  /* single malloc, then fill in all fields */
+  if ((tab = malloc(bucketpos + (tabsize * (sizeof(*(tab->tab))))))) {
+    tab->tab = (ei_bucket **)((char *)tab + bucketpos);
+    memset(tab->tab,0,tabsize*sizeof(*(tab->tab)));
+    tab->hash = ei_dohash;
+    tab->size = tabsize;
+    tab->npos = 0;
+    tab->nelem = 0;
+    tab->freelist = NULL;
+  }
+
+  return tab;
+}
+