diff --git a/autotest/SpinLock/SpinLock.cpp b/autotest/SpinLock/SpinLock.cpp
new file mode 100644
index 000000000..885fba690
--- /dev/null
+++ b/autotest/SpinLock/SpinLock.cpp
@@ -0,0 +1,26 @@
+#include <Core/Core.h>
+
+using namespace Upp;
+
+SpinLock data_lock;
+dword    data;
+
+void AddData()
+{
+	data_lock.Enter();
+	data = data + 1;
+	data_lock.Leave();
+}
+
+CONSOLE_APP_MAIN
+{
+	RTIMING("Test");
+	{
+		CoWork co;
+		for(int i = 0; i < 10000000; i++)
+			co & callback(AddData);
+	}
+	RDUMP(data);
+	ASSERT(data == 10000000);
+	LOG("================ OK");
+}
diff --git a/autotest/SpinLock/SpinLock.upp b/autotest/SpinLock/SpinLock.upp
new file mode 100644
index 000000000..edcf19ab8
--- /dev/null
+++ b/autotest/SpinLock/SpinLock.upp
@@ -0,0 +1,9 @@
+uses
+	Core;
+
+file
+	SpinLock.cpp;
+
+mainconfig
+	"" = "SSE2 MT";
+
diff --git a/autotest/SpinLock/init b/autotest/SpinLock/init
new file mode 100644
index 000000000..51c9bba20
--- /dev/null
+++ b/autotest/SpinLock/init
@@ -0,0 +1,4 @@
+#ifndef _SpinLock_icpp_init_stub
+#define _SpinLock_icpp_init_stub
+#include "Core/init"
+#endif