105 lines
4.9 KiB
C++
Executable File
105 lines
4.9 KiB
C++
Executable File
/*****************************************************************************
|
|
* *
|
|
* M A I N *
|
|
* *
|
|
*---------------------------------------------------------------------------*
|
|
* Beschreibung: Startroutine, wird direkt vom Bootlader angesprungen, *
|
|
* nachdem dieser in den Protected Mode geschaltet hat und *
|
|
* die GDT und IDT initalisiert hat. *
|
|
* *
|
|
* Autor: Michael Schoettner, HHU, 11.11.2016 *
|
|
*****************************************************************************/
|
|
|
|
#include "kernel/Globals.h"
|
|
#include "kernel/Paging.h"
|
|
#include "user/MainMenu.h"
|
|
|
|
int main() {
|
|
kout.clear();
|
|
|
|
// Speicherverwaltung initialisieren
|
|
allocator.init();
|
|
|
|
// Initialize SerialPort
|
|
serial.init();
|
|
|
|
// Startmeldung
|
|
kout << "HHUos 0.10\n"
|
|
<< "==========\n"
|
|
<< "Unterstuetzte Funktionen:\n"
|
|
<< " - Bildschirmausgaben\n"
|
|
<< " - Sound ueber den PC-Lautsprecher\n"
|
|
<< " - Tastatureingaben per Abfrage\n"
|
|
<< " - Einfache Heap verwaltung\n"
|
|
<< " - Tastatureingaben per Interrupt\n"
|
|
<< " - Kooperative Threads\n"
|
|
<< " - VESA Graphics Mode\n"
|
|
<< " - Einfaches Paging\n"
|
|
<< " - Preemptive Threads\n"
|
|
<< " - Einfache Synchronisierung\n"
|
|
<< endl;
|
|
|
|
// Tastatur-Unterbrechungsroutine 'einstoepseln'
|
|
kb.plugin();
|
|
pit.plugin();
|
|
|
|
// Interrupts erlauben (Tastatur, PIT)
|
|
cpu.enable_int();
|
|
|
|
// Activate paging
|
|
// This has to happen after the allocator is initialized but before the scheduler is started
|
|
pg_init();
|
|
|
|
// NOTE: Because I introduced dynamic memory inside the scheduler (probably bad idea?) I have to add
|
|
// these init methods (allocator has to be initialized before but scheduler is constructed in the globals)
|
|
scheduler.init();
|
|
|
|
// Scheduler starten (schedule() erzeugt den Idle-Thread)
|
|
scheduler.ready(new MainMenu()); // NOTE: A thread that manages other threads has to be added before scheduler.schedule(),
|
|
// because scheduler.schedule() doesn't return, only threads get cpu time
|
|
scheduler.schedule();
|
|
|
|
// BUG: Timer interrupt preemption works normal at first, but after a time there is a heap of output
|
|
// from the scheduler that is not triggered by PIT, I don't know why this occurs
|
|
|
|
// NOTE: Enforced ToDo's (needed)
|
|
// DONE: Rewrite demos for threads
|
|
// TODO: Make menu for demos
|
|
// TODO: Thread switching stops after a while
|
|
// TODO: Prefer deblocked thread and find out why it doesn't work
|
|
// TODO: Threads are not cleanup after exit, use managed pointer?
|
|
//
|
|
// NOTE: Main ToDo's (extra)
|
|
// DONE: Basic event management for keyboard events so threads can utilize interrupt based inputs
|
|
// This also works well with a blocked-queue in the scheduler for threads waiting for input
|
|
//
|
|
// TODO: Serial output, output graphviz dot data for memory etc.
|
|
// TODO: Fix the damn TreeAllocator: Allow root deletion without bluescreen
|
|
// Maybe just remove the red black tree stuff and replace with usual binary search tree?
|
|
// I can just balance this tree unefficiantly by reinserting all nodes
|
|
// TODO: Implement realloc so ArrayList can realloc instead of newly allocate bigger block
|
|
// TODO: Array wrapper
|
|
// TODO: Rewrite Logging with a basic (synchronized) logger
|
|
// TODO: String wrapper
|
|
//
|
|
// NOTE: Cleanup + Refactor
|
|
// TODO: Use templates for queue so threads don't have to be casted down from chain
|
|
// TODO: Change scheduler to only use references instead of pointers
|
|
// TODO: Unify debug output format
|
|
// TODO: Drawing Circles
|
|
// TODO: Cleanup: Remove I added this... Notes, just leave explanations
|
|
// TODO: Remove Math "lib" or do something with it
|
|
// TODO: Cleanup imports: Only import stuff in implementation when only needed there
|
|
// TODO: Switch cpu_disableint() to semaphore etc (Spinlock in the scheduler?)
|
|
// TODO: Change mylib types to not use T* but T and call with memcpy<Type*> instead of memcpy<Type>
|
|
// TODO: Make more stuff const
|
|
// TODO: Remove ArrayList init and do this inside ArrayList when an operation on the list is done
|
|
// TODO: Remove CoroutineState/ThreadState and just use pusha/popa, start/switch methods should
|
|
// just get esp as argument
|
|
// TODO: Kevman unsubscribe is needed, because exited threads will still be woken up by kevman
|
|
// Or check if thread is still running
|
|
|
|
// Scheduler doesn't return
|
|
return 0;
|
|
}
|