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2024-07-02 18:13:47 +02:00
commit bbeaa887cd
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+///////////////////////////////////////////////////////////////////////////////
+// Copyright (c) Lewis Baker
+// Licenced under MIT license. See LICENSE.txt for details.
+///////////////////////////////////////////////////////////////////////////////
+
+#include "spin_mutex.hpp"
+#include "spin_wait.hpp"
+
+namespace cppcoro
+{
+	spin_mutex::spin_mutex() noexcept
+		: m_isLocked(false)
+	{
+	}
+
+	bool spin_mutex::try_lock() noexcept
+	{
+		return !m_isLocked.exchange(true, std::memory_order_acquire);
+	}
+
+	void spin_mutex::lock() noexcept
+	{
+		spin_wait wait;
+		while (!try_lock())
+		{
+			while (m_isLocked.load(std::memory_order_relaxed))
+			{
+				wait.spin_one();
+			}
+		}
+	}
+
+	void spin_mutex::unlock() noexcept
+	{
+		m_isLocked.store(false, std::memory_order_release);
+	}
+}