refactor(kernel): ♻️ rewrite time manager

2025-07-02 19:09:16 +00:00 · 2025-05-23 23:30:04 +00:00
parent 9538589c11
commit 33c284091d
31 changed files with 572 additions and 573 deletions
--- a/Kernel/subsystem/time/manager.cpp
+++ b/Kernel/subsystem/time/manager.cpp
@ -0,0 +1,107 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <time.hpp>
+
+#include <memory.hpp>
+#include <acpi.hpp>
+#include <debug.h>
+#include <io.h>
+
+#include "../../kernel.h"
+
+namespace Time
+{
+	void Manager::CheckActiveTimer()
+	{
+		if (unlikely(Timers[ActiveTimer]->IsAvailable() == false))
+		{
+			for (size_t i = Timers.size(); i-- > 0;)
+			{
+				if (Timers[i]->IsAvailable() == false)
+					continue;
+				ActiveTimer = i;
+				break;
+			}
+		}
+	}
+
+	bool Manager::Sleep(size_t Nanoseconds)
+	{
+		if (unlikely(Timers.empty()))
+			return false;
+
+		this->CheckActiveTimer();
+		debug("sleep for %d ns in timer %s", Nanoseconds, Timers[ActiveTimer]->Name());
+		return Timers[ActiveTimer]->Sleep(Nanoseconds);
+	}
+
+	uint64_t Manager::GetTimeNs()
+	{
+		if (unlikely(Timers.empty()))
+			return 0;
+
+		this->CheckActiveTimer();
+		return Timers[ActiveTimer]->GetNanoseconds();
+	}
+
+	const char *Manager::GetActiveTimerName()
+	{
+		if (unlikely(Timers.empty()))
+			return "\0";
+
+		this->CheckActiveTimer();
+		return Timers[ActiveTimer]->Name();
+	}
+
+	void Manager::InitializeTimers()
+	{
+#if defined(__amd64__) || defined(__i386__)
+		/* TODO: RTC check */
+		/* TODO: PIT check */
+
+		if (acpi)
+		{
+			if (((ACPI::ACPI *)acpi)->HPET)
+			{
+				ITimer *hpet = new HighPrecisionEventTimer(((ACPI::ACPI *)acpi)->HPET);
+				ActiveTimer = Timers.size();
+				Timers.push_back(hpet);
+			}
+
+			/* TODO: ACPI check */
+			/* TODO: APIC check */
+		}
+		else
+		{
+			KPrint("\x1b[33mACPI not available");
+		}
+
+		ITimer *tsc = new TimeStampCounter;
+		ActiveTimer = Timers.size();
+		Timers.push_back(tsc);
+
+		ITimer *kvmclock = new KVMClock;
+		ActiveTimer = Timers.size();
+		Timers.push_back(kvmclock);
+#endif
+
+		assert(Timers.empty() == false);
+	}
+
+	Manager::Manager(void *_acpi) : acpi(_acpi) {}
+}