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/* ========================================
Copyright (C) 2025, Amlal El Mahrouss, licensed under the Apache 2.0 license.
======================================== */
#pragma once
/// @file KernelTaskScheduler.h
/// @brief Kernel Task Scheduler backend file.
/// @author Amlal El Mahrouss (amlal@nekernel.org)
#include <ArchKit/ArchKit.h>
#include <KernelKit/CoreProcessScheduler.h>
#include <KernelKit/LockDelegate.h>
namespace Kernel {
class KernelTaskHelper;
using KID = ProcessID;
/// @brief Equivalent of UserProcess, but for kernel tasks.
/// @author Amlal
class KernelTask final {
public:
Char Name[kSchedNameLen] = {"KernelTask"};
ProcessSubsystem SubSystem{ProcessSubsystem::kProcessSubsystemKernel};
HAL::StackFramePtr StackFrame{nullptr};
UInt8* StackReserve{nullptr};
SizeT StackSize{kSchedMaxStackSz};
ProcessImage Image{};
/// @brief a KID is a Kernel ID, it is used to find a task running within
/// the kernel.
KID Kid{0};
};
template <>
struct Vettable<KernelTask> final {
static constexpr BOOL kValue = NO;
};
/// @brief Equivalent of UserProcessHelper, but for kernel tasks.
/// @author Amlal
class KernelTaskHelper final {
public:
STATIC Bool Add(HAL::StackFramePtr frame_ptr, ProcessID new_kid);
STATIC Bool Remove(const KID kid);
STATIC Bool CanBeScheduled(const KernelTask& process);
STATIC ErrorOr<KID> TheCurrentKID();
STATIC SizeT StartScheduling();
};
} // namespace Kernel
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