Kernel spinlock support.

2 files changed, 40 insertions, 0 deletions

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
diff --git a/src/include/util/locked/lock.H b/src/include/util/locked/lock.H
new file mode 100644
index 000000000..b5237276e
--- /dev/null
+++ b/src/include/util/locked/lock.H
@@ -0,0 +1,20 @@
+#ifndef __UTIL_LOCKED_LOCK_H
+#define __UTIL_LOCKED_LOCK_H
+
+namespace Util
+{
+    namespace Locked
+    {
+	class Lock
+	{
+	    public:
+		Lock() {};
+		virtual ~Lock() {};
+		
+		virtual void lock() = 0;
+		virtual void unlock() = 0;
+	};
+    };
+};
+
+#endif