1 files changed, 92 insertions, 0 deletions
diff --git a/ARMeilleure/Statistics.cs b/ARMeilleure/Statistics.cs
new file mode 100644
index 00000000..e80ee59d
--- /dev/null
+++ b/ARMeilleure/Statistics.cs
@@ -0,0 +1,92 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+
+namespace ARMeilleure
+{
+    public static class Statistics
+    {
+        private const int ReportMaxFunctions = 100;
+
+        [ThreadStatic]
+        private static Stopwatch _executionTimer;
+
+        private static ConcurrentDictionary<ulong, long> _ticksPerFunction;
+
+        static Statistics()
+        {
+            _ticksPerFunction = new ConcurrentDictionary<ulong, long>();
+        }
+
+        public static void InitializeTimer()
+        {
+#if M_PROFILE
+            if (_executionTimer == null)
+            {
+                _executionTimer = new Stopwatch();
+            }
+#endif
+        }
+
+        internal static void StartTimer()
+        {
+#if M_PROFILE
+            _executionTimer.Restart();
+#endif
+        }
+
+        internal static void StopTimer(ulong funcAddr)
+        {
+#if M_PROFILE
+            _executionTimer.Stop();
+
+            long ticks = _executionTimer.ElapsedTicks;
+
+            _ticksPerFunction.AddOrUpdate(funcAddr, ticks, (key, oldTicks) => oldTicks + ticks);
+#endif
+        }
+
+        internal static void ResumeTimer()
+        {
+#if M_PROFILE
+            _executionTimer.Start();
+#endif
+        }
+
+        internal static void PauseTimer()
+        {
+#if M_PROFILE
+            _executionTimer.Stop();
+#endif
+        }
+
+        public static string GetReport()
+        {
+            int count = 0;
+
+            StringBuilder sb = new StringBuilder();
+
+            sb.AppendLine(" Function address   | Time");
+            sb.AppendLine("--------------------------");
+
+            KeyValuePair<ulong, long>[] funcTable = _ticksPerFunction.ToArray();
+
+            foreach (KeyValuePair<ulong, long> kv in funcTable.OrderByDescending(x => x.Value))
+            {
+                long timeInMs = (kv.Value * 1000) / Stopwatch.Frequency;
+
+                sb.AppendLine($" 0x{kv.Key:X16} | {timeInMs} ms");
+
+                if (count++ >= ReportMaxFunctions)
+                {
+                    break;
+                }
+            }
+
+            return sb.ToString();
+        }
+    }
+}
+\ No newline at end of file