Add Benchmarking activity.

3 files changed, 141 insertions, 0 deletions

diff --git a/same-android/src/main/java/com/orbekk/same/MainActivity.java b/same-android/src/main/java/com/orbekk/same/MainActivity.java
index 5c1f144..5d76c1e 100644
--- a/same-android/src/main/java/com/orbekk/same/MainActivity.java
+++ b/same-android/src/main/java/com/orbekk/same/MainActivity.java
@@ -3,6 +3,8 @@ package com.orbekk.same;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.orbekk.same.android.benchmark.RepeatedSetVariableActivity;
+
 import android.app.Activity;
 import android.content.Intent;
 import android.os.Bundle;
@@ -39,6 +41,8 @@ public class MainActivity extends Activity {
         case R.id.graphics_demo:
             startActivity(new Intent(this, GraphicsActivity.class));
             break;
+        case R.id.benchmark:
+            startActivity(new Intent(this, RepeatedSetVariableActivity.class));
         default:
             logger.error("Unknown menu entry: {}", item);
         }
diff --git a/same-android/src/main/java/com/orbekk/same/android/benchmark/RepeatedSetVariableActivity.java b/same-android/src/main/java/com/orbekk/same/android/benchmark/RepeatedSetVariableActivity.java
new file mode 100644
index 0000000..7940939
--- /dev/null
+++ b/same-android/src/main/java/com/orbekk/same/android/benchmark/RepeatedSetVariableActivity.java
@@ -0,0 +1,85 @@
+package com.orbekk.same.android.benchmark;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.Toast;
+
+import com.orbekk.same.Types;
+import com.orbekk.same.Variable;
+import com.orbekk.same.Variable.OnChangeListener;
+import com.orbekk.same.android.ClientInterfaceBridge;
+
+public class RepeatedSetVariableActivity extends Activity {
+    private Logger logger = LoggerFactory.getLogger(getClass());
+    public static final int WARMUP_ITERATIONS = 10;
+    public static final int ITERATIONS = 100;
+    private ClientInterfaceBridge client;
+    
+    private int warmupIterationsPerformed;
+    private int iterationsPerformed;
+    private Timer timer;
+    
+    private Variable<Integer> variable;
+    
+    private OnChangeListener<Integer> changeListener =
+            new OnChangeListener<Integer>() {
+        @Override
+        public void valueChanged(Variable<Integer> variable) {
+            variable.update();
+            timer.stop();
+            iterationFinished();
+            if (iterationsPerformed < ITERATIONS) {
+                timer.start();
+                variable.set(variable.get() + 1);
+            } else {
+                finalizeBenchmark();
+            }
+        }
+    };
+    
+    private void finalizeBenchmark() {
+        logger.info("Benchmark finished. Samples: " + timer);
+    }
+    
+    /** Returns whether or not we should continue. */
+    private void iterationFinished() {
+        if (warmupIterationsPerformed < WARMUP_ITERATIONS) {
+            warmupIterationsPerformed += 1;
+        } else {
+            iterationsPerformed += 1;
+        }
+    }
+    
+    @Override public void onCreate(Bundle savedBundle) {
+        super.onCreate(savedBundle);
+    }
+    
+    public void onResume() {
+        super.onResume();
+        Toast.makeText(this, "Starting benchmark", Toast.LENGTH_LONG).show();
+
+        timer = new Timer(WARMUP_ITERATIONS + ITERATIONS);
+        warmupIterationsPerformed = 0;
+        iterationsPerformed = 0;
+        client = new ClientInterfaceBridge(this);
+        client.connect();
+        initializeVariable();
+    }
+    
+    public void initializeVariable() {
+        variable = client.createVariableFactory()
+                .create("BenchmarkVariable", Types.fromType(Integer.class));
+        variable.addOnChangeListener(changeListener);
+        timer.start();
+        variable.set(0);
+    }
+    
+    public void onStop() {
+        super.onStop();
+        client.disconnect();
+    }
+    
+}
diff --git a/same-android/src/main/java/com/orbekk/same/android/benchmark/Timer.java b/same-android/src/main/java/com/orbekk/same/android/benchmark/Timer.java
new file mode 100644
index 0000000..a3e32b8
--- /dev/null
+++ b/same-android/src/main/java/com/orbekk/same/android/benchmark/Timer.java
@@ -0,0 +1,52 @@
+package com.orbekk.same.android.benchmark;
+
+import java.util.ArrayList;
+
+public class Timer {
+    ArrayList<Long> samples;
+    boolean running = false;
+    long startTime = 0;
+    
+    public Timer() {
+        samples = new ArrayList<Long>();
+    }
+    
+    public Timer(int capacity) {
+        samples = new ArrayList<Long>(capacity);
+    }
+    
+    public boolean isRunning() {
+        return running;
+    }
+    
+    public void start() {
+        startTime = System.currentTimeMillis();
+        running = true;
+    }
+    
+    public void stop() {
+        long stopTime = System.currentTimeMillis();
+        running = false;
+        samples.add(stopTime - startTime);
+    }
+    
+    public long getLastMeasurement() {
+        return samples.get(samples.size() - 1);
+    }
+    
+    public ArrayList<Long> getTimes() {
+        return new ArrayList<Long>(samples);
+    }
+
+    public long getSum() {
+        long sum = 0;
+        for (long s : samples) {
+            sum += s;
+        }
+        return sum;
+    }
+    
+    public String toString() {
+        return "Timer[sum(" + getSum() + "), samples(" + samples + ")]";
+    }
+}