kernel: Reworking kernel to support virtual memory.

Signed-off-by: Amlal El Mahrouss <amlal@el-mahrouss-logic.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/Private/KernelKit/LockDelegate.hpp b/Private/KernelKit/LockDelegate.hpp
new file mode 100644
index 00000000..0fd9ba63
--- /dev/null
+++ b/Private/KernelKit/LockDelegate.hpp
@@ -0,0 +1,64 @@
+/* -------------------------------------------
+
+    Copyright Mahrouss Logic
+
+------------------------------------------- */
+
+#pragma once
+
+#include <NewKit/Atom.hpp>
+#include <NewKit/Defines.hpp>
+
+#define kLockDone (200U)    /* job is done */
+#define kLockTimedOut (100U) /* job has timed out */
+
+namespace HCore
+{
+/// @brief Lock condition pointer.
+typedef Boolean* LockPtr;
+
+/// @brief Locking delegate class, hangs until limit.
+/// @tparam N the amount of cycles to wait.
+template <SizeT N>
+class LockDelegate final
+{
+  public:
+    LockDelegate() = delete;
+
+  public:
+    explicit LockDelegate(LockPtr expr)
+    {
+        auto spin = 0U;
+    
+        while (spin != N)
+        {
+            if (*expr)
+            {
+                m_LockStatus | kLockDone;
+                break;
+            }
+        }
+
+        if (spin == N)
+            m_LockStatus | kLockTimedOut;
+    }
+
+    ~LockDelegate() = default;
+
+    LockDelegate &operator=(const LockDelegate &) = delete;
+    LockDelegate(const LockDelegate &) = delete;
+
+    bool Done()
+    {
+        return m_LockStatus[kLockDone] == kLockDone;
+    }
+
+    bool HasTimedOut()
+    {
+        return m_LockStatus[kLockTimedOut] != kLockTimedOut;
+    }
+
+  private:
+    Atom<UInt> m_LockStatus;
+};
+} // namespace HCore