From 80474d576c2e92441f6bcc18faae71a38b91bd70 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Fri, 9 May 2008 13:09:58 +0100
Subject: translate: helper functions for mimizing cost of key compares

---
 src/gallium/auxiliary/translate/translate.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src/gallium/auxiliary/translate')

diff --git a/src/gallium/auxiliary/translate/translate.h b/src/gallium/auxiliary/translate/translate.h
index de6f09d18a2..b8210af50cf 100644
--- a/src/gallium/auxiliary/translate/translate.h
+++ b/src/gallium/auxiliary/translate/translate.h
@@ -95,6 +95,27 @@ struct translate *translate_lookup_or_create( struct translate_context *tctx,
 
 struct translate *translate_create( const struct translate_key *key );
 
+static INLINE int translate_keysize( const struct translate_key *key )
+{
+   return 2 * sizeof(int) + key->nr_elements * sizeof(struct translate_element);
+}
+
+static INLINE int translate_key_compare( const struct translate_key *a,
+                                         const struct translate_key *b )
+{
+   int keysize = translate_keysize(a);
+   return memcmp(a, b, keysize);
+}
+
+
+static INLINE void translate_key_sanitize( struct translate_key *a )
+{
+   int keysize = translate_keysize(a);
+   char *ptr = (char *)a;
+   memset(ptr + keysize, 0, sizeof(*a) - keysize);
+}
+
+
 /*******************************************************************************
  *  Private:
  */
-- 
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