From e276e26955ce49bea7dcccb5a364ffd5faffcd5e Mon Sep 17 00:00:00 2001
From: Paolo Molaro <lupus@oddwiz.org>
Date: Wed, 14 May 2003 16:34:10 +0000
Subject: [PATCH] Object construction.

svn path=/trunk/mono/; revision=14582
---
 mono/benchmark/Makefile.am   |  1 +
 mono/benchmark/ctor-bench.cs | 67 ++++++++++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 mono/benchmark/ctor-bench.cs

diff --git a/mono/benchmark/Makefile.am b/mono/benchmark/Makefile.am
index 40dfaa5d3c8..4db8e150a63 100644
--- a/mono/benchmark/Makefile.am
+++ b/mono/benchmark/Makefile.am
@@ -20,6 +20,7 @@ TESTSRC=			\
 	initlocals.cs		\
 	logic.cs		\
 	switch.cs		\
+	ctor-bench.cs		\
 	bulkcpy.il		\
 	math.cs
 
diff --git a/mono/benchmark/ctor-bench.cs b/mono/benchmark/ctor-bench.cs
new file mode 100644
index 00000000000..31099acdd55
--- /dev/null
+++ b/mono/benchmark/ctor-bench.cs
@@ -0,0 +1,67 @@
+using System;
+using System.Reflection;
+
+class T {
+
+	public T () {
+	}
+
+	const int count = 1000000;
+
+	static void use_new () {
+		for (int i = 0; i < count; ++i) 
+			new T ();
+	}
+
+	object Clone () {
+		return MemberwiseClone ();
+	}
+	
+	static void use_clone () {
+		T t = new T ();
+		for (int i = 0; i < count; ++i) 
+			t.Clone ();
+	}
+	
+	static void use_activator () {
+		for (int i = 0; i < count; ++i) 
+			Activator.CreateInstance (typeof (T));
+	}
+	
+	static void use_ctor () {
+		ConstructorInfo ctor = typeof (T).GetConstructor (Type.EmptyTypes);
+		for (int i = 0; i < count; ++i) 
+			ctor.Invoke (null);
+	}
+	
+	static void Main () {
+		long start, end, new_val, perc;
+		start = Environment.TickCount;
+
+		start = Environment.TickCount;
+		use_new ();
+		end = Environment.TickCount;
+		Console.WriteLine ("new took {0}", end-start);
+		new_val = end-start;
+
+		start = Environment.TickCount;
+		use_clone ();
+		end = Environment.TickCount;
+		perc = ((end-start-new_val) * 100) / new_val;
+		Console.WriteLine ("clone took {0} {1} %", end-start, perc);
+
+		start = Environment.TickCount;
+		use_activator ();
+		end = Environment.TickCount;
+		perc = ((end-start-new_val) * 100) / new_val;
+		Console.WriteLine ("activator took {0} {1} %", end-start, perc);
+
+		start = Environment.TickCount;
+		use_ctor ();
+		end = Environment.TickCount;
+		perc = ((end-start-new_val) * 100) / new_val;
+		Console.WriteLine ("ctor took {0} {1} %", end-start, perc);
+
+	}
+}
+
-- 
2.25.1