bxc-41733.diff

--- MainActivity.cs.jonp-orig	2016-07-06 17:11:28.000000000 -0400
+++ MainActivity.cs	2016-07-06 17:21:21.000000000 -0400
@@ -3,7 +3,10 @@
 using Android.OS;
 using Android.Runtime;
 
+using Java.Interop;
+
 using System;
+using System.Diagnostics;
 using System.Threading;
 
 namespace JNICrash
@@ -24,6 +27,12 @@
             // and attach an event to it
             Button button = FindViewById<Button>(Resource.Id.myButton);
 
+            var logCreateLocalRef = (Action<JniObjectReference>)
+                Delegate.CreateDelegate (
+                    typeof (Action<JniObjectReference>),
+                    typeof (JniEnvironment),
+                    "LogCreateLocalRef");
+
             button.Click += delegate
             {
                 /*** LOOK HERE ***/
@@ -31,6 +40,7 @@
                 // Get off the main thread.
                 Thread thread = new Thread(() =>
                 {
+                    var time = Stopwatch.StartNew();
                     // Perform the test 1024 times (greater than the
                     // size of the local reference table).
                     for (int i = 0; i < 1024; i++)
@@ -40,6 +50,7 @@
                         // The source for this method can be found in
                         // libdemo/src/demo_DemoLibrary.c.
                         IntPtr outputPtr = DemoLibrary.Java_demo_DemoLibrary_test(JNIEnv.Handle, IntPtr.Zero);
+                        logCreateLocalRef(new JniObjectReference (outputPtr, JniObjectReferenceType.Local));
 
                         // Get the result of the method as a C# byte[].
                         // This worked in Xamarin.Android 5, but now floods the logs
@@ -52,6 +63,8 @@
                         // Update our counter.
                         Console.WriteLine("Called test() method {0} times (output length: {1} bytes).", count++, output.Length);
                     }
+                    time.Stop();
+                    Console.WriteLine("# jonp: Elapsed time: {0}ms", time.ElapsedMilliseconds);
                 })
                 {
                     IsBackground = true