[Joafip-svn] SF.net SVN: joafip:[3062] trunk/joafip-kvstore/src/main/java/net/sf/joafip/ kvstore/entity/AbstractFileStorable.java

[<luc...@us...>]

Revision: 3062
          http://joafip.svn.sourceforge.net/joafip/?rev=3062&view=rev
Author:   luc_peuvrier
Date:     2012-05-03 02:48:57 +0000 (Thu, 03 May 2012)
Log Message:
-----------
optimization

Modified Paths:
--------------
    trunk/joafip-kvstore/src/main/java/net/sf/joafip/kvstore/entity/AbstractFileStorable.java

Modified: trunk/joafip-kvstore/src/main/java/net/sf/joafip/kvstore/entity/AbstractFileStorable.java
===================================================================
--- trunk/joafip-kvstore/src/main/java/net/sf/joafip/kvstore/entity/AbstractFileStorable.java	2012-05-02 06:14:15 UTC (rev 3061)
+++ trunk/joafip-kvstore/src/main/java/net/sf/joafip/kvstore/entity/AbstractFileStorable.java	2012-05-03 02:48:57 UTC (rev 3062)
@@ -192,20 +192,23 @@
 	private void updateCrc32(final byte[] buffer, final int start,
 			final int length) {
 
-		for (int i = 0; i < length; i++) {
-			final byte byteValue = buffer[start + i];
+		int index = start;
+		for (int count = 0; count < length; count++) {
+			final byte byteValue = buffer[index++];
 			updateCrc32(byteValue);
 		}
 
 	}
 
 	private void updateCrc32(final byte byteValue) {
+		int value = byteValue;
 		for (int j = 0; j < 8; j++) {
-			final int testbit = ((crc32 >> 31) & 1) ^ ((byteValue >> j) & 1);
+			final int testbit = ((crc32 >> 31) & 1) ^ (value & 1);
 			crc32 <<= 2;
 			if (testbit != 0) {
 				crc32 ^= 0x8005; /* 32 bit crc */
 			}
+			value >>= 1;
 		}
 	}
 

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