113 lines
5.2 KiB
C++
Executable File
113 lines
5.2 KiB
C++
Executable File
/*****************************************************************************
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* *
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* M A I N *
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* *
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*---------------------------------------------------------------------------*
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* Beschreibung: Startroutine, wird direkt vom Bootlader angesprungen, *
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* nachdem dieser in den Protected Mode geschaltet hat und *
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* die GDT und IDT initalisiert hat. *
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* *
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* Autor: Michael Schoettner, HHU, 11.11.2016 *
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*****************************************************************************/
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#include "kernel/Globals.h"
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#include "kernel/Paging.h"
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#include "lib/Input.h"
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#include "user/MainMenu.h"
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void print_startup_message() {
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kout << "BSEos 1.0\n"
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<< "==========\n"
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<< "Unterstuetzte Funktionen:\n"
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<< " - Bildschirmausgaben\n"
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<< " - Sound ueber den PC-Lautsprecher\n"
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<< " - Tastatureingaben per Abfrage\n"
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<< " - Einfache Heapverwaltung\n"
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<< " - Tastatureingaben per Interrupt\n"
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<< " - Kooperative Threads\n"
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<< " - VESA Graphics Mode\n"
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<< " - Einfaches Paging\n"
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<< " - Preemptive Threads\n"
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<< " - Einfache Synchronisierung\n"
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<< " - Einfache (Tastatur-)Eventverwaltung\n"
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<< " - Serial Output Logging\n"
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<< "\nPress Enter to continue\n"
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<< endl;
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}
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int main() {
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Logger::set_level(Logger::DEBUG);
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Logger::disable_kout();
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Logger::enable_serial();
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// Speicherverwaltung initialisieren
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allocator.init();
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// Tastatur-Unterbrechungsroutine 'einstoepseln'
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kb.plugin();
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pit.plugin();
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// Interrupts erlauben (Tastatur, PIT)
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cpu.enable_int();
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// Activate paging
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// This has to happen after the allocator is initialized but before the scheduler is started
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pg_init();
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// Startmeldung
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kout.clear();
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print_startup_message();
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// NOTE: Because this is blocking with an empty loop we have to disable optimizations (at least on my compiler version)
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waitForReturn();
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// Scheduler starten (schedule() erzeugt den Idle-Thread)
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scheduler.ready(new MainMenu()); // NOTE: A thread that manages other threads has to be added before scheduler.schedule(),
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// because scheduler.schedule() doesn't return, only threads get cpu time
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scheduler.schedule();
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// NOTE: Enforced ToDo's (needed)
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// DONE: Rewrite demos for threads
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// TODO: Make menu for demos
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// DONE: Thread switching stops after a while
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// TODO: Threads are not cleanup after exit, use managed pointer?
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// TODO: Fix PCSKP/Keyboard Demos: Keyboard Thread gets missing after blocking waiting for input, kevman doesn't wake up...
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//
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// NOTE: Main ToDo's (extra)
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// DONE: Basic event management for keyboard events so threads can utilize interrupt based inputs
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// This also works well with a blocked-queue in the scheduler for threads waiting for input
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//
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// DONE: Serial output
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// TODO: Output graphviz stuff over serial
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// TODO: Fix the damn TreeAllocator: Allow root deletion without bluescreen
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// Maybe just remove the red black tree stuff and replace with usual binary search tree?
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// I can just balance this tree unefficiantly by reinserting all nodes
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// TODO: Implement realloc so ArrayList can realloc instead of newly allocate bigger block
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// TODO: Array wrapper
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// DONE: Rewrite Logging with a basic (synchronized) logger
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// TODO: String wrapper
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//
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// NOTE: Cleanup + Refactor
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// DONE: Use templates for queue so threads don't have to be casted down from chain
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// TODO: Only use references instead of pointers where possible
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// DONE: Unify debug output format
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// TODO: Cleanup: Remove I added this... Notes, just leave explanations
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// DONE: Remove Math "lib" or do something with it
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// TODO: Cleanup imports: Only import stuff in implementation when only needed there
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// TODO: Switch cpu_disableint() to semaphore etc (Spinlock in the scheduler?)
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// TODO: Change mylib types to not use T* but T and call with memcpy<Type*> instead of memcpy<Type>
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// TODO: Make more stuff const and static and static constexpr const
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// TODO: Remove ArrayList init and do this inside ArrayList when an operation on the list is done
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// TODO: Remove CoroutineState/ThreadState and just use pusha/popa, start/switch methods should
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// just get esp as argument
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// TODO: Kevman unsubscribe is needed, because exited threads will still be woken up by kevman
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// Or check if thread is still running
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// TODO: Delete copy constructors that weren't already deleted
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// DONE: Switch out semaphore Queue with ArrayList? Or switch back Scheduler to Queue?
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// TODO: Add virtual destructors and make sure to call them with delete when objects are removed
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// TODO: Replace empty constructors/destructors with default keyword
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// Scheduler doesn't return
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return 0;
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}
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