initial commit

timer/com/vladium/utils/timing/ITimerConstants.java

@@ -0,0 +1,31 @@
+
+package com.vladium.utils.timing;
+
+// ----------------------------------------------------------------------------
+/**
+ * A package-private collection of constants used by {@link ITimer} implementations
+ * in <code>HRTimer</code> and <code>JavaSystemTimer</code> classes.
+ *
+ * @author (C) <a href="mailto:vroubtsov@illinoisalumni.org">Vlad Roubtsov</a>, 2002
+ */
+interface ITimerConstants
+{
+    // public: ................................................................
+    
+    /**
+     * Conditional compilation flag to enable/disable state checking in timer
+     * implementations. Just about the only reason you might want to disable
+     * this is to reduce the timer overhead, but in practice the gain is very
+     * small. 
+     */
+    static final boolean DO_STATE_CHECKS = true;
+    
+    /**
+     * Timer state enumeration. 
+     */
+    static final int STATE_READY = 0, STATE_STARTED = 1, STATE_STOPPED = 2;
+    
+    /**
+     * User-friendly timer state names indexed by their state values.
+     */
+    static final String [] STATE_NAMES = {"READY", "STARTED", "STOPPED"};