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Diffstat (limited to 'dev/Kernel/Sources/MP.cxx')
| -rw-r--r-- | dev/Kernel/Sources/MP.cxx | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/dev/Kernel/Sources/MP.cxx b/dev/Kernel/Sources/MP.cxx deleted file mode 100644 index bf35f51e..00000000 --- a/dev/Kernel/Sources/MP.cxx +++ /dev/null @@ -1,256 +0,0 @@ -/* ------------------------------------------- - - Copyright ZKA Technologies. - -------------------------------------------- */ - -#include <ArchKit/ArchKit.hxx> -#include <KernelKit/ProcessScheduler.hxx> -#include <KernelKit/MP.hxx> -#include <CFKit/Property.hxx> - -///! BUGS: 0 - -///! @file MP.cxx -///! @brief This file handles multi processing in the kernel. -///! @brief Multi processing is needed for multi-tasking operations. - -namespace Kernel -{ - STATIC Property cSMPCoreName; - - ///! A HardwareThread class takes care of it's owned hardware thread. - ///! It has a stack for it's core. - - ///! @brief C++ constructor. - HardwareThread::HardwareThread() = default; - - ///! @brief C++ destructor. - HardwareThread::~HardwareThread() = default; - - //! @brief returns the id of the thread. - const ThreadID& HardwareThread::ID() noexcept - { - return fID; - } - - //! @brief returns the kind of thread we have. - const ThreadKind& HardwareThread::Kind() noexcept - { - return fKind; - } - - //! @brief is the thread busy? - Bool HardwareThread::IsBusy() noexcept - { - return fBusy; - } - - /// @brief Get processor stack frame. - - HAL::StackFramePtr HardwareThread::StackFrame() noexcept - { - MUST_PASS(fStack); - return fStack; - } - - Void HardwareThread::Busy(const Bool busy) noexcept - { - fBusy = busy; - } - - HardwareThread::operator bool() - { - return fStack; - } - - /// @brief Wakeup the processor. - - Void HardwareThread::Wake(const bool wakeup) noexcept - { - fWakeup = wakeup; - - if (!fWakeup) - mp_hang_thread(fStack); - else - mp_wakeup_thread(fStack); - } - - EXTERN Bool rt_check_stack(HAL::StackFramePtr stackPtr); - - /// @brief Switch to hardware thread. - /// @param stack the new hardware thread. - /// @retval true stack was changed, code is running. - /// @retval false stack is invalid, previous code is running. - Bool HardwareThread::Switch(HAL::StackFramePtr stack) - { - if (!rt_check_stack(stack)) - { - /// provide 'nullptr' to free the stack frame. - if (stack == nullptr) - { - delete fStack; - fStack = nullptr; - - return true; - } - - return false; - } - - if (fStack) - { - delete fStack; - fStack = nullptr; - } - - fStack = stack; - - rt_do_context_switch(fStack); - - return true; - } - - ///! @brief Tells if processor is waked up. - bool HardwareThread::IsWakeup() noexcept - { - return fWakeup; - } - - //! @brief Constructor and destructor - - ///! @brief Default constructor. - HardwareThreadScheduler::HardwareThreadScheduler() - { - StringView strCoreName(512); - strCoreName += "\\Class\\Smp\\MPClass"; - - cSMPCoreName.GetKey() = strCoreName; - cSMPCoreName.GetValue() = (UIntPtr)this; - - kcout << "newoskrnl: initializing " << strCoreName.CData() << endl; - } - - ///! @brief Default destructor. - HardwareThreadScheduler::~HardwareThreadScheduler() = default; - - /// @brief Shared singleton function - Ref<HardwareThreadScheduler> HardwareThreadScheduler::The() - { - static HardwareThreadScheduler manager; - return {manager}; - } - - /// @brief Get Stack Frame of Core - HAL::StackFramePtr HardwareThreadScheduler::Leak() noexcept - { - if (fThreadList[fCurrentThread].Leak() && - ProcessHelper::TheCurrentPID() == - fThreadList[fCurrentThread].Leak().Leak()->fSourcePID) - return fThreadList[fCurrentThread].Leak().Leak()->fStack; - - return nullptr; - } - - /// @brief Finds and switch to a free core. - bool HardwareThreadScheduler::Switch(HAL::StackFramePtr stack) - { - if (stack == nullptr) - return false; - - for (SizeT idx = 0; idx < cMaxHWThreads; ++idx) - { - // stack != nullptr -> if core is used, then continue. - if (!fThreadList[idx].Leak() || - !fThreadList[idx].Leak().Leak()->IsWakeup() || - fThreadList[idx].Leak().Leak()->IsBusy()) - continue; - - // to avoid any null deref. - if (!fThreadList[idx].Leak().Leak()->fStack) - continue; - if (fThreadList[idx].Leak().Leak()->fStack->SP == 0) - continue; - if (fThreadList[idx].Leak().Leak()->fStack->BP == 0) - continue; - - fThreadList[idx].Leak().Leak()->Busy(true); - - fThreadList[idx].Leak().Leak()->fID = idx; - - /// I figured out this: - /// Allocate stack - /// Set APIC base to stack - /// Do stuff and relocate stack based on this code. - /// - Amlel - rt_copy_memory(stack, fThreadList[idx].Leak().Leak()->fStack, - sizeof(HAL::StackFrame)); - - fThreadList[idx].Leak().Leak()->Switch(fThreadList[idx].Leak().Leak()->fStack); - - fThreadList[idx].Leak().Leak()->fSourcePID = ProcessHelper::TheCurrentPID(); - - fThreadList[idx].Leak().Leak()->Busy(false); - - return true; - } - - return false; - } - - /** - * Index Hardware thread - * @param idx the index - * @return the reference to the hardware thread. - */ - Ref<HardwareThread*> HardwareThreadScheduler::operator[](const SizeT& idx) - { - if (idx == 0) - { - if (fThreadList[idx].Leak().Leak()->Kind() != kHartSystemReserved) - { - fThreadList[idx].Leak().Leak()->fKind = kHartBoot; - } - } - else if (idx >= cMaxHWThreads) - { - static HardwareThread* fakeThread = new HardwareThread(); - - if (!fakeThread) - { - fakeThread = new HardwareThread(); - } - - fakeThread->fKind = kInvalidHart; - - return {fakeThread}; - } - - return fThreadList[idx].Leak(); - } - - /** - * Check if thread pool isn't empty. - * @return - */ - HardwareThreadScheduler::operator bool() noexcept - { - return !fThreadList.Empty(); - } - - /** - * Reverse operator bool - * @return - */ - bool HardwareThreadScheduler::operator!() noexcept - { - return fThreadList.Empty(); - } - - /// @brief Returns the amount of core present. - /// @return the number of cores. - SizeT HardwareThreadScheduler::Count() noexcept - { - return fThreadList.Count(); - } -} // namespace Kernel |