From 95ae0f42a5f22bd913a713db987729520c42a123 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Fri, 4 Jul 2025 18:58:57 +0200
Subject: feat: see below.

feat: Rework `OpenMSG` into `LibMSG`
feat: Rename `generic_kits` to `misc`

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/misc/BenchKit/Chrono.h    | 31 +++++++++++++++++++++++++
 dev/misc/BenchKit/X64Chrono.h | 54 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 dev/misc/BenchKit/Chrono.h
 create mode 100644 dev/misc/BenchKit/X64Chrono.h

(limited to 'dev/misc/BenchKit')

diff --git a/dev/misc/BenchKit/Chrono.h b/dev/misc/BenchKit/Chrono.h
new file mode 100644
index 00000000..394f16fd
--- /dev/null
+++ b/dev/misc/BenchKit/Chrono.h
@@ -0,0 +1,31 @@
+/* -------------------------------------------
+
+Copyright (C) 2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#ifndef BENCHKIT_CHRONO_H
+#define BENCHKIT_CHRONO_H
+
+#include <CompilerKit/CompilerKit.h>
+#include <NeKit/Defines.h>
+
+namespace Kernel {
+class ChronoInterface;
+
+/// @brief a Chronometer interface used for benchmarking.
+class ChronoInterface {
+ public:
+  ChronoInterface()          = default;
+  virtual ~ChronoInterface() = default;
+
+  NE_COPY_DEFAULT(ChronoInterface);
+
+  virtual void   Start()                = 0;
+  virtual void   Stop()                 = 0;
+  virtual void   Reset()                = 0;
+  virtual UInt64 GetElapsedTime() const = 0;
+};
+}  // namespace Kernel
+
+#endif  // BENCHKIT_CHRONO_H
diff --git a/dev/misc/BenchKit/X64Chrono.h b/dev/misc/BenchKit/X64Chrono.h
new file mode 100644
index 00000000..706ce883
--- /dev/null
+++ b/dev/misc/BenchKit/X64Chrono.h
@@ -0,0 +1,54 @@
+/* -------------------------------------------
+
+Copyright (C) 2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <misc/BenchKit/Chrono.h>
+
+#if defined(__NE_AMD64__)
+
+namespace Kernel {
+class X64Chrono;
+struct X64ChronoTraits;
+
+struct X64ChronoTraits {
+ private:
+  STATIC UInt64 TickImpl_(void) {
+    UInt64 a = 0, d = 0;
+    __asm__ volatile("rdtsc" : "=a"(a), "=d"(d));
+    return (d << 32) | a;
+  }
+
+  friend X64Chrono;
+};
+
+/// @brief X86_64 hardware chrono implementation using the `rdtsc` instruction.
+class X64Chrono : public ChronoInterface {
+ public:
+  X64Chrono()           = default;
+  ~X64Chrono() override = default;
+
+  NE_COPY_DEFAULT(X64Chrono);
+
+ public:
+  void Start() override { fStart = X64ChronoTraits::TickImpl_(); }
+
+  void Stop() override { fStop = X64ChronoTraits::TickImpl_(); }
+
+  void Reset() override {
+    fStart = 0;
+    fStop  = 0;
+  }
+
+  UInt64 GetElapsedTime() const override { return fStop - fStart; }
+
+ private:
+  UInt64 fStart = 0;
+  UInt64 fStop  = 0;
+};
+}  // namespace Kernel
+
+#endif  // defined(__NE_AMD64__)
\ No newline at end of file
-- 
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