From b69ec3f6d953e67422dd32b72688cba850fd1b2e Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbarenblat@galois.com>
Date: Mon, 13 Jan 2014 15:56:57 -0800
Subject: Initial commit

---
 .../com/galois/ppaml/tracer/examples/Simple.java   | 84 ++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 bindings/java/examples/src/com/galois/ppaml/tracer/examples/Simple.java

(limited to 'bindings/java/examples/src/com/galois/ppaml/tracer/examples/Simple.java')

diff --git a/bindings/java/examples/src/com/galois/ppaml/tracer/examples/Simple.java b/bindings/java/examples/src/com/galois/ppaml/tracer/examples/Simple.java
new file mode 100644
index 0000000..a698573
--- /dev/null
+++ b/bindings/java/examples/src/com/galois/ppaml/tracer/examples/Simple.java
@@ -0,0 +1,84 @@
+/* Simple -- basic ppamltracer example
+ * This file is in the public domain. */
+
+package com.galois.ppaml.tracer.examples;
+
+import com.galois.ppaml.tracer.Phase;
+import com.galois.ppaml.tracer.Tracer;
+
+public class Simple {
+
+	protected Phase factPhase;
+
+	protected Phase fibPhase;
+
+	protected void go(Tracer tracer) {
+		// Register the phases.
+		factPhase = tracer.createPhase("fact");
+		fibPhase = tracer.createPhase("fib");
+
+		// Print factorials.
+		System.out.print("Factorials:");
+		for (int i = 0; i < 21; i++) {
+			System.out.print(" " + fact(i));
+		}
+		System.out.println();
+
+		// Print Fibonacci numbers.
+		System.out.print("Fibonacci numbers:");
+		for (int i = 0; i < 30; i++) {
+			System.out.print(" " + fib(i));
+		}
+		System.out.println();
+
+		// Finalize phases and exit.
+		factPhase.close();
+		fibPhase.close();
+	}
+
+	protected long fact(int n) {
+		// Record that we're running inside the factorial phase.
+		factPhase.start();
+		// Compute the factorial.
+		long result;
+		if (n == 0) {
+			result = 1;
+		} else {
+			result = n * fact(n - 1);
+		}
+		// Return the result.
+		factPhase.stop();
+		return result;
+	}
+
+	protected int fib(int n) {
+		// Record that we're running inside the Fibonacci phase.
+		fibPhase.start();
+		// Compute the nth Fibonacci number.
+		int result;
+		switch (n) {
+		case 0:
+		case 1:
+			result = n;
+			break;
+		default:
+			result = fib(n - 1) + fib(n - 2);
+			break;
+		}
+		// Return the result.
+		fibPhase.stop();
+		return result;
+	}
+
+	public static void main(String[] args) {
+		// Start ppamltracer.
+		Tracer tracer = new Tracer("/tmp/simple_report");
+
+		// Run the app.
+		(new Simple()).go(tracer);
+
+		// Finalize ppamltracer and exit.
+		tracer.close();
+	}
+
+}
-- 
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