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first scheduler implementation

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churl
2022-06-05 16:50:58 +02:00
parent b07d78d842
commit a09e3e4a34
1 changed files with 25 additions and 14 deletions
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25
c_os/kernel/threads/Scheduler.cc
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@ -12,8 +12,6 @@
#include "kernel/threads/Scheduler.h" #include "kernel/threads/Scheduler.h"
#include "kernel/threads/IdleThread.h" #include "kernel/threads/IdleThread.h"
/***************************************************************************** /*****************************************************************************
* Methode: Scheduler::schedule * * Methode: Scheduler::schedule *
*---------------------------------------------------------------------------* *---------------------------------------------------------------------------*
@ -23,11 +21,16 @@ void Scheduler::schedule () {
/* hier muss Code eingefuegt werden */ /* hier muss Code eingefuegt werden */
Thread* idle = new IdleThread();
this->readyQueue.enqueue(idle);
/* Bevor diese Methode anufgerufen wird, muss zumindest der Idle-Thread /* Bevor diese Methode anufgerufen wird, muss zumindest der Idle-Thread
* in der Queue eingefuegt worden sein. * in der Queue eingefuegt worden sein.
*/ */
}
Thread& first = *(Thread*)this->readyQueue.dequeue();
this->start(first);
}
/***************************************************************************** /*****************************************************************************
* Methode: Scheduler::ready * * Methode: Scheduler::ready *
@ -41,9 +44,9 @@ void Scheduler::ready (Thread * that) {
/* hier muss Code eingefuegt werden */ /* hier muss Code eingefuegt werden */
this->readyQueue.enqueue(that);
} }
/***************************************************************************** /*****************************************************************************
* Methode: Scheduler::exit * * Methode: Scheduler::exit *
*---------------------------------------------------------------------------* *---------------------------------------------------------------------------*
@ -56,9 +59,10 @@ void Scheduler::exit () {
/* hier muss Code eingefuegt werden */ /* hier muss Code eingefuegt werden */
Thread& next = *(Thread*)this->readyQueue.dequeue();
this->dispatch(next);
} }
/***************************************************************************** /*****************************************************************************
* Methode: Scheduler::kill * * Methode: Scheduler::kill *
*---------------------------------------------------------------------------* *---------------------------------------------------------------------------*
@ -73,10 +77,8 @@ void Scheduler::exit () {
void Scheduler::kill(Thread* that) { void Scheduler::kill(Thread* that) {
/* hier muss Code eingefuegt werden */ /* hier muss Code eingefuegt werden */
} }
/***************************************************************************** /*****************************************************************************
* Methode: Scheduler::yield * * Methode: Scheduler::yield *
*---------------------------------------------------------------------------* *---------------------------------------------------------------------------*
@ -92,4 +94,13 @@ void Scheduler::yield () {
/* hier muss Code eingefuegt werden */ /* hier muss Code eingefuegt werden */
if (this->readyQueue.isEmpty()) {
// Idle thread running
return;
}
this->readyQueue.enqueue(this->get_active());
Thread& next = *(Thread*)this->readyQueue.dequeue();
this->dispatch(next);
} }