different Timers implementing Milliseconds()

4 files changed, 121 insertions, 0 deletions

diff --git a/src/jake2/sys/HighPrecisionTimer.java b/src/jake2/sys/HighPrecisionTimer.java
new file mode 100644
index 0000000..a8a0201
--- /dev/null
+++ b/src/jake2/sys/HighPrecisionTimer.java
@@ -0,0 +1,32 @@
+/*
+ * HighPrecisionTimer.java
+ * Copyright (C) 2005
+ * 
+ * $Id: HighPrecisionTimer.java,v 1.1 2005-07-01 14:11:00 hzi Exp $
+ */
+package jake2.sys;
+
+import sun.misc.Perf;
+
+
+
+
+class HighPrecisionTimer extends Timer {
+
+	private Perf perf = Perf.getPerf();
+	private double f = 1000.0 / perf.highResFrequency();
+	private long base;
+	
+	HighPrecisionTimer() {
+		base = perf.highResCounter();
+	}
+	
+	public long currentTimeMillis() {
+		long time = perf.highResCounter();
+		long delta = time - base;
+		if (delta < 0) {
+			delta += Long.MAX_VALUE + 1;
+		}
+		return (long)(delta * f);
+	}
+}
diff --git a/src/jake2/sys/NanoTimer.java b/src/jake2/sys/NanoTimer.java
new file mode 100644
index 0000000..d654fe8
--- /dev/null
+++ b/src/jake2/sys/NanoTimer.java
@@ -0,0 +1,27 @@
+/*
+ * NanoTimer.java
+ * Copyright (C) 2005
+ * 
+ * $Id: NanoTimer.java,v 1.1 2005-07-01 14:11:00 hzi Exp $
+ */
+package jake2.sys;
+
+
+public class NanoTimer extends Timer {
+
+	private long base;
+
+	NanoTimer() {
+		base = System.nanoTime();
+	}
+	
+	public long currentTimeMillis() {
+		long time = System.nanoTime();
+		long delta = time - base;
+		if (delta < 0) {
+			delta += Long.MAX_VALUE + 1;
+		}
+		return (long)(delta * 0.000001);
+	}
+
+}
diff --git a/src/jake2/sys/StandardTimer.java b/src/jake2/sys/StandardTimer.java
new file mode 100644
index 0000000..133bb24
--- /dev/null
+++ b/src/jake2/sys/StandardTimer.java
@@ -0,0 +1,27 @@
+/*
+ * StandardTimer.java
+ * Copyright (C) 2005
+ * 
+ * $Id: StandardTimer.java,v 1.1 2005-07-01 14:11:00 hzi Exp $
+ */
+package jake2.sys;
+
+
+class StandardTimer extends Timer {
+
+	private long base;
+	
+	StandardTimer() {
+		base = System.currentTimeMillis();
+	}
+	
+	public long currentTimeMillis() {
+		long time = System.currentTimeMillis();
+		long delta = time - base;
+		if (delta < 0) {
+			delta += Long.MAX_VALUE + 1;
+		}
+		return delta;
+	}
+
+}
diff --git a/src/jake2/sys/Timer.java b/src/jake2/sys/Timer.java
new file mode 100644
index 0000000..4eede1f
--- /dev/null
+++ b/src/jake2/sys/Timer.java
@@ -0,0 +1,35 @@
+/*
+ * Timer.java
+ * Copyright (C) 2005
+ * 
+ * $Id: Timer.java,v 1.1 2005-07-01 14:11:01 hzi Exp $
+ */
+package jake2.sys;
+
+import jake2.Globals;
+
+
+public abstract class Timer {
+
+	abstract public long currentTimeMillis();
+	private static long time = 0;
+	
+	static Timer t;
+	
+	static {
+		try {
+			t = new NanoTimer();
+		} catch (Throwable e) {
+			try {
+				t = new HighPrecisionTimer();
+			} catch (Throwable e1) {
+				t = new StandardTimer();
+			}
+		}
+		System.out.println("using " + t.getClass().getName());
+	}
+	
+	public static int Milliseconds() {
+		return Globals.curtime = (int)(t.currentTimeMillis());
+	}
+}