From e7a6ae9cc5b84abe63c7439005656ecc4beda8c1 Mon Sep 17 00:00:00 2001
From: Patrick Williams <iawillia@us.ibm.com>
Date: Wed, 9 Jun 2010 14:12:01 -0500
Subject: Kernel spinlock support.

---
 src/include/kernel/spinlock.H | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/include/kernel/spinlock.H

(limited to 'src/include/kernel/spinlock.H')

diff --git a/src/include/kernel/spinlock.H b/src/include/kernel/spinlock.H
new file mode 100644
index 000000000..92d1f6e05
--- /dev/null
+++ b/src/include/kernel/spinlock.H
@@ -0,0 +1,20 @@
+#ifndef __KERNEL_SPINLOCK_H
+#define __KERNEL_SPINLOCK_H
+
+#include <util/locked/lock.H>
+#include <stdint.h>
+
+class Spinlock : public Util::Locked::Lock
+{
+    public:
+	Spinlock() : iv_reserve(0), iv_ready(0) {};
+
+	void lock();
+	void unlock();
+
+    private:
+	volatile uint64_t iv_reserve;
+	volatile uint64_t iv_ready;
+};
+
+#endif
-- 
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