From fb1e8d8b754c47842523a44648a4de8f3ffb8b4f Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Mon, 20 Dec 2010 18:50:34 +0000
Subject: [PATCH] ThreadNumber: added (experimental).

---
 libs/libcommon/src/ThreadNumber.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 libs/libcommon/src/ThreadNumber.cpp

diff --git a/libs/libcommon/src/ThreadNumber.cpp b/libs/libcommon/src/ThreadNumber.cpp
new file mode 100644
index 00000000000..05cd4211921
--- /dev/null
+++ b/libs/libcommon/src/ThreadNumber.cpp
@@ -0,0 +1,12 @@
+#include <Yandex/ThreadNumber.h>
+
+
+__thread unsigned thread_number = 0;
+unsigned threads = 0;
+
+unsigned ThreadNumber::get()
+{
+	if (unlikely(!thread_number))
+		thread_number = __sync_add_and_fetch(&threads, 1);
+	return thread_number;
+}