From d4adcff958903e168fb09f6dc98641316093ce5d Mon Sep 17 00:00:00 2001
From: Bananymous <bananymousosq@gmail.com>
Date: Fri, 4 Aug 2023 15:15:00 +0300
Subject: [PATCH] Kernel: Move sleep() implementation to TimerHandler

---
 kernel/include/kernel/Timer/PIT.h   |  1 -
 kernel/include/kernel/Timer/Timer.h |  3 +--
 kernel/kernel/Timer/PIT.cpp         | 10 ----------
 kernel/kernel/Timer/Timer.cpp       | 17 ++++++++++++-----
 4 files changed, 13 insertions(+), 18 deletions(-)

diff --git a/kernel/include/kernel/Timer/PIT.h b/kernel/include/kernel/Timer/PIT.h
index 09025ccf..36703636 100644
--- a/kernel/include/kernel/Timer/PIT.h
+++ b/kernel/include/kernel/Timer/PIT.h
@@ -14,7 +14,6 @@ namespace Kernel
 		static BAN::ErrorOr<BAN::UniqPtr<PIT>> create();
 
 		virtual uint64_t ms_since_boot() const override;
-		virtual void sleep(uint64_t) const override;
 
 	private:
 		void initialize();
diff --git a/kernel/include/kernel/Timer/Timer.h b/kernel/include/kernel/Timer/Timer.h
index 8117102e..56e5d519 100644
--- a/kernel/include/kernel/Timer/Timer.h
+++ b/kernel/include/kernel/Timer/Timer.h
@@ -12,7 +12,6 @@ namespace Kernel
 	public:
 		virtual ~Timer() {};
 		virtual uint64_t ms_since_boot() const = 0;
-		virtual void sleep(uint64_t) const = 0;
 	};
 
 	class TimerHandler
@@ -35,7 +34,7 @@ namespace Kernel
 	private:
 		uint64_t m_boot_time { 0 };
 		BAN::UniqPtr<RTC> m_rtc;
-		BAN::Vector<BAN::UniqPtr<Timer>> m_timers;
+		BAN::UniqPtr<Timer> m_timer;
 	};
 
 }
\ No newline at end of file
diff --git a/kernel/kernel/Timer/PIT.cpp b/kernel/kernel/Timer/PIT.cpp
index 1450ae16..00389383 100644
--- a/kernel/kernel/Timer/PIT.cpp
+++ b/kernel/kernel/Timer/PIT.cpp
@@ -60,14 +60,4 @@ namespace Kernel
 		return s_system_time;
 	}
 
-	void PIT::sleep(uint64_t ms) const
-	{
-		if (ms == 0)
-			return;
-		uint64_t wake_time = s_system_time + ms;
-		Kernel::Scheduler::get().set_current_thread_sleeping(wake_time);
-		if (s_system_time < wake_time)
-			dwarnln("sleep woke {} ms too soon", wake_time - s_system_time);
-	}
-
 }
diff --git a/kernel/kernel/Timer/Timer.cpp b/kernel/kernel/Timer/Timer.cpp
index c0a9cdc9..a9340051 100644
--- a/kernel/kernel/Timer/Timer.cpp
+++ b/kernel/kernel/Timer/Timer.cpp
@@ -1,5 +1,6 @@
-#include <kernel/Timer/Timer.h>
+#include <kernel/Scheduler.h>
 #include <kernel/Timer/PIT.h>
+#include <kernel/Timer/Timer.h>
 
 namespace Kernel
 {
@@ -35,21 +36,27 @@ namespace Kernel
 			dwarnln("PIT: {}", res.error());
 		else
 		{
-			MUST(m_timers.emplace_back(BAN::move(res.release_value())));
+			m_timer = res.release_value();
 			dprintln("PIT initialized");
+			return;
 		}
 
-		ASSERT(!m_timers.empty());
+		Kernel::panic("Could not initialize any timer");
 	}
 
 	uint64_t TimerHandler::ms_since_boot() const
 	{
-		return m_timers.front()->ms_since_boot();
+		return m_timer->ms_since_boot();
 	}
 
 	void TimerHandler::sleep(uint64_t ms) const
 	{
-		return m_timers.front()->sleep(ms);
+		if (ms == 0)
+			return;
+		uint64_t wake_time = ms_since_boot() + ms;
+		Scheduler::get().set_current_thread_sleeping(wake_time);
+		if (ms_since_boot() < wake_time)
+			dwarnln("sleep woke {} ms too soon", wake_time - ms_since_boot());
 	}
 
 	uint64_t TimerHandler::get_unix_timestamp()