Simple cache to reduce the garbage of float[3] vectors.

1 files changed, 38 insertions, 0 deletions

diff --git a/src/jake2/util/Vec3Cache.java b/src/jake2/util/Vec3Cache.java
new file mode 100644
index 0000000..1ec2d08
--- /dev/null
+++ b/src/jake2/util/Vec3Cache.java
@@ -0,0 +1,38 @@
+/*
+ * Vec3Cache.java
+ * Copyright (C) 2003
+ *
+ * $Id: Vec3Cache.java,v 1.1 2005-01-16 15:16:44 cawe Exp $
+ */
+package jake2.util;
+
+/**
+ * Vec3Cache contains float[3] for temporary usage.
+ * The usage can reduce the garbage at runtime.
+ *
+ * @author cwei
+ */
+public final class Vec3Cache {
+    
+    //private static Stack cache = new Stack();
+    private static final float[][] cache = new float[64][3];
+    private static int index = 0;
+    private static int max = 0;
+    
+    public static final float[] get() {
+        //max = Math.max(index, max);
+        return cache[index++];
+    }
+    
+    public static final void release() {
+        index--;
+    }
+
+    public static final void release(int count) {
+        index-=count;
+    }
+    
+    public static final void debug() {
+        System.err.println("Vec3Cache: max. " + (max + 1) + " vectors used.");
+    }
+}
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