progress on scheduler/dispatcher implementation

thread/dispatcher.cc

@@ -1,17 +1,30 @@
 // vim: set noet ts=4 sw=4:
 
 #include "dispatcher.h"
+#include "core.h"
 
-Dispatcher::Dispatcher() {}
+Dispatcher::Dispatcher() {
+}
 
-Thread *Dispatcher::active() { return nullptr; }
+Thread *Dispatcher::active() {
+	return lifePointer[Core::getID()];
+}
 
 bool Dispatcher::isActive(const Thread *thread, unsigned *cpu) {
-  (void)thread;
+	for(uint8_t i=0; i<Core::MAX; i++){
-  (void)cpu;
+		if(thread == lifePointer[i]){
-  return false;
+			*cpu = i;
+			return true;
+		}
+	}
+	cpu = nullptr;
+	return false;
 }
 
-void Dispatcher::go(Thread *first) { (void)first; }
+void Dispatcher::go(Thread *first) {
+	first->go();
+}
 
-void Dispatcher::dispatch(Thread *next) { (void)next; }
+void Dispatcher::dispatch(Thread *next) {
+	lifePointer[Core::getID()]->resume(next);
+}

thread/dispatcher.h

@@ -6,6 +6,7 @@
 #pragma once
 #include "../thread/thread.h"
 #include "../types.h"
+#include "core.h"
 
 /*! \brief The dispatcher dispatches threads and puts the scheduler's
  *  decisions into action.
@@ -23,6 +24,8 @@ class Dispatcher {
    */
   void setActive(Thread* thread) { (void)thread; }
 
+  Thread* lifePointer[Core::MAX];
+
  public:
   /*! \brief constructor
    *

thread/scheduler.cc

@@ -2,19 +2,43 @@
 
 #include "scheduler.h"
 
-Scheduler::Scheduler() {}
+Queue<Thread> readyList = Queue<Thread>(0);
+
+Scheduler::Scheduler() {
+}
 
 Thread* Scheduler::getNext() { return nullptr; }
 
-void Scheduler::schedule() {}
+void Scheduler::schedule() {
+	// TODO maybe guard?
+	Thread* next = readyList.dequeue();
+	assert(next != nullptr);
+	dispatcher.go(next);
+}
 
-void Scheduler::ready(Thread* that) { (void)that; }
+void Scheduler::ready(Thread* that) {
+	assert(that != nullptr);
+	readyList.enqueue(*that);
+}
 
-void Scheduler::resume(bool ready) { (void)ready; }
+void Scheduler::resume(bool ready) {
+	if (!active()->kill_flag)
+        readyList.enqueue(*active());
+    Thread* thread = readyList.dequeue();
+    assert(thread != nullptr);
+    dispatcher.dispatch(thread);
+}
 
-void Scheduler::exit() {}
+void Scheduler::exit() {
+	Thread* thread = readyList.dequeue();
+    assert(thread != nullptr);
+    dispatcher.dispatch(thread);
+}
 
-void Scheduler::kill(Thread* that) { (void)that; }
+void Scheduler::kill(Thread* that) {
+    readyList.remove(that);
+    that->kill_flag = true;
+}
 
 bool Scheduler::isActive(const Thread* that, unsigned int* cpu) {
   (void)that;

thread/scheduler.h

@@ -32,6 +32,7 @@ class Scheduler {
    */
   Thread* getNext();
 
+
  public:
   Scheduler();