Changeset 279733d

Timestamp:

03/12/08 14:40:30 (4 years ago)

Author:

Tomash Brechko <tomash.brechko@…>

Branches:

master, ketama-compat

Children:

b1cbae

Parents:

272c52

git-author:

Tomash Brechko <tomash.brechko@…> (03/12/08 14:09:36)

git-committer:

Tomash Brechko <tomash.brechko@…> (03/12/08 14:40:30)

Message:

Make compute_crc32_add() more optimal.

File:

• src/gencrc32.pl (modified) (3 diffs)

src/gencrc32.pl

@@ -1 +1 @@
 #! /usr/bin/perl
 #
-# Copyright (C) 2007 Tomash Brechko.  All rights reserved.
+# Copyright (C) 2007-2008 Tomash Brechko.  All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -70 +70 @@
 
 
-static const unsigned int crc32lookup[256] = {
+const unsigned int crc32lookup[256] = {
   $table
 };
-
-
-unsigned int
-compute_crc32_add(unsigned int crc32, const char *s, size_t len)
-{
-  const char *end = s + len;
-
-  crc32 = ~crc32;
-
-  while (s < end)
-    {
-      unsigned int index = (crc32 ^ (unsigned char) *s) & 0x000000ffU;
-      crc32 = (crc32 >> 8) ^ crc32lookup[index];
-      ++s;
-    }
-
-  return (~crc32);
-}
 EOF
 
@@ -112 +94 @@
 
 
-extern
-unsigned int
-compute_crc32_add(unsigned int crc32, const char *s, size_t len);
+extern const unsigned int crc32lookup[];
 
+
+#define compute_crc32(s, l)                                      \\
+  compute_crc32_add(@{[ sprintf("0x%08xU", $init) ]}, (s), (l))
 
 static inline
 unsigned int
-compute_crc32(const char *s, size_t len)
+compute_crc32_add(unsigned int crc32, const char *s, size_t len)
 {
-  return compute_crc32_add(@{[ sprintf("0x%08xU", $init) ]}, s, len);
+  const char *end = s + len;
+
+  crc32 = ~crc32;
+
+  while (s < end)
+    {
+      unsigned int index = (crc32 ^ (unsigned char) *s) & 0x000000ffU;
+      crc32 = (crc32 >> 8) ^ crc32lookup[index];
+      ++s;
+    }
+
+  return (~crc32);
 }