From 0733bb9a6809e33db8259ffaeb5a2839fd6cbe50 Mon Sep 17 00:00:00 2001
From: Hayodea Hakol <hayodea@protonmail.com>
Date: Wed, 17 Sep 2025 16:28:07 -0400
Subject: [PATCH] Locking: add SpinLock class

Nothing much to add: add a spinlock which has a tryAcquire method.
This will be used as a primitive for building our spinQing locking
system.
---
 include/spinLock.h | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 include/spinLock.h

diff --git a/include/spinLock.h b/include/spinLock.h
new file mode 100644
index 0000000..afda9a5
--- /dev/null
+++ b/include/spinLock.h
@@ -0,0 +1,35 @@
+#ifndef SPIN_LOCK_H
+#define SPIN_LOCK_H
+
+#include <atomic>
+
+namespace smo {
+
+/**
+ * @brief Simple spinlock using std::atomic
+ */
+class SpinLock
+{
+public:
+	SpinLock()
+	: locked(false)
+	{}
+
+	bool tryAcquire()
+	{
+		bool expected = false;
+		return locked.compare_exchange_strong(expected, true);
+	}
+
+	void release()
+	{
+		locked.store(false);
+	}
+
+private:
+	std::atomic<bool> locked;
+};
+
+} // namespace smo
+
+#endif // SPIN_LOCK_H