feat! BenchKit breaking changes.

why:

- Made it expandable to other traits and platforms.
- You can provide a `Traits` now to the `HWChrono`.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

3 files changed, 66 insertions, 56 deletions

diff --git a/dev/misc/BenchKit/Chrono.h b/dev/misc/BenchKit/Chronometer.h
index 3a82a94e..3a82a94e 100644
--- a/dev/misc/BenchKit/Chrono.h
+++ b/dev/misc/BenchKit/Chronometer.h
diff --git a/dev/misc/BenchKit/HWChronometer.h b/dev/misc/BenchKit/HWChronometer.h
new file mode 100644
index 00000000..2b8637d8
--- /dev/null
+++ b/dev/misc/BenchKit/HWChronometer.h
@@ -0,0 +1,66 @@
+/* -------------------------------------------
+
+Copyright (C) 2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <misc/BenchKit/Chronometer.h>
+
+namespace Kernel {
+struct HWChronoTraits;
+
+template <typename ChronoTraits = HWChronoTraits>
+class HWChrono;
+
+/// @brief BenchKit chrono logic for x64.
+struct HWChronoTraits final {
+ private:
+  STATIC UInt64 TickImpl_(void) {
+#ifdef __NE_AMD64__
+    UInt64 a = 0, d = 0;
+
+    asm volatile("rdtsc" : "=a"(a), "=d"(d));
+
+    return (d << 32) | a;
+#elif defined(__NE_ARM64__)
+    UInt64 result;
+
+    asm volatile("mrs %0, cntvct_el1" : "=r"(result));
+
+    return result;
+#else
+#error !!! no backend defined !!!
+#endif
+  }
+
+  friend HWChrono<HWChronoTraits>;
+};
+
+/// @brief hardware chronometer implementation using a trait to extract the data.
+template <typename ChronoTraits>
+class HWChrono BENCHKIT_INTERFACE {
+ public:
+  HWChrono()           = default;
+  ~HWChrono() override = default;
+
+  NE_COPY_DEFAULT(HWChrono)
+
+ public:
+  Void Start() override { fStart = ChronoTraits::TickImpl_(); }
+
+  Void Stop() override { fStop = ChronoTraits::TickImpl_(); }
+
+  Void Reset() override {
+    fStart = 0;
+    fStop  = 0;
+  }
+
+  UInt64 GetElapsedTime() const override { return fStop - fStart; }
+
+ private:
+  UInt64 fStart{};
+  UInt64 fStop{};
+};
+}  // namespace Kernel
diff --git a/dev/misc/BenchKit/X64Chrono.h b/dev/misc/BenchKit/X64Chrono.h
deleted file mode 100644
index 728e7d60..00000000
--- a/dev/misc/BenchKit/X64Chrono.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/* -------------------------------------------
-
-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;
-
-/// @brief BenchKit chrono logic for x64.
-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 BENCHKIT_INTERFACE {
- 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{};
-  UInt64 fStop{};
-};
-}  // namespace Kernel
-
-#endif  // defined(__NE_AMD64__)
\ No newline at end of file