java/src/org/openantivirus/util PatternOptimizer.java,1.3,1.4
Kurt Huwig <[email protected]> Thu, 20 May 2004 13:34:35 +0000
| Newsgroups | gmane.comp.security.virus.openantivirus.cvs |
|---|---|
| Message-ID | <[email protected]> |
Update of /cvsroot/openantivirus/java/src/org/openantivirus/util
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv11620/src/org/openantivirus/util
Modified Files:
PatternOptimizer.java
Log Message:
Speed improvements
Index: PatternOptimizer.java
===================================================================
RCS file: /cvsroot/openantivirus/java/src/org/openantivirus/util/PatternOptimizer.java,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4
--- PatternOptimizer.java 20 May 2004 13:04:49 -0000 1.3
+++ PatternOptimizer.java 20 May 2004 13:34:32 -0000 1.4
@@ -95,13 +95,11 @@
for (int j = 0; j < wp.skipList.length; j++) {
final int skipCount = wp.skipList[j];
- if (j % 2 == 0 && skipCount >= 2) {
+ if ((j & 1) == 0 && skipCount >= 2) {
match = wp.pattern[pos] & 0xff;
for (int i = 1; i < skipCount; i++) {
- match &= 0xff;
- match <<= 8;
- match |= wp.pattern[pos + i] & 0xff;
+ match = ((match << 8) | wp.pattern[i]) & 0xffff;
final int tripleCount = count[match];
if (tripleCount <= min) {
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