From a670613f0cd96261a3827e50c202dfd714dba264 Mon Sep 17 00:00:00 2001
From: Doug MacEachern <dougm@hyperic.com>
Date: Thu, 28 Apr 2005 16:58:38 +0000
Subject: [PATCH] minor optmization for 0 or 1 match

---
 .../src/net/hyperic/sigar/ptql/ProcessFinder.java  | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/bindings/java/src/net/hyperic/sigar/ptql/ProcessFinder.java b/bindings/java/src/net/hyperic/sigar/ptql/ProcessFinder.java
index c5214b2f..e3e15071 100644
--- a/bindings/java/src/net/hyperic/sigar/ptql/ProcessFinder.java
+++ b/bindings/java/src/net/hyperic/sigar/ptql/ProcessFinder.java
@@ -9,6 +9,8 @@ import net.hyperic.sigar.SigarProxyCache;
 public class ProcessFinder {
 
     private SigarProxy proxy;
+    private static final long[] NO_MATCHES = new long[0];
+    private static final long[] ONE_MATCH = new long[1];
 
     public ProcessFinder(SigarProxy proxy) {
         this.proxy = proxy;
@@ -126,17 +128,19 @@ public class ProcessFinder {
             }
             else {
                 pids[i] = -1;
-                continue;
             }
         }
 
-        long[] matched = new long[matches];
-
         if (matches == 1) {
             /* avoid loop below */
-            matched[0] = pids[lastMatch];
-            return matched;
+            ONE_MATCH[0] = pids[lastMatch];
+            return ONE_MATCH;
         }
+        else if (matches == 0) {
+            return NO_MATCHES;
+        }
+
+        long[] matched = new long[matches];
 
         //XXX this is clunky
         for (int i=0, j=0; i<=lastMatch; i++) {