jsos

commit f4e395ea5ea5a0951ba281dcbaf02f0eba382989
parent e9c43ef362397273cf53d5606b3a7ea2927abb27
Author: Jul <jul@9o.is>
Date:   Sun, 25 Nov 2012 23:54:34 -0500

FCFS implemented (RR still works).

Diffstat:
M
scripts/os/scheduler.js
 | 
10
+++++-----

1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/scripts/os/scheduler.js b/scripts/os/scheduler.js
@@ -25,8 +25,7 @@ function scheduler() {
     this.busyTime++;
 
     // if ready queue is not empty, dequeue
-    if(this.processTerminated()) {
-      
+    if(this.processTerminated()) { 
       var p = _KernelReadyQueue.dequeue();
       while(p.state == PCB_STATE_TERMINATED)
         p = _KernelReadyQueue.dequeue();
@@ -35,13 +34,13 @@ function scheduler() {
     }
 
     _CPU.cycle();
-    
 
     // update current changes in the PCB registry
     this.running.updateRegisters(
         _CPU.PC, _CPU.ACC, _CPU.X, _CPU.Y, _CPU.Z);
 
-    this.updateQuantumCount();
+    if(CPU_STATE_RR.name == CPU_STATE)
+      this.updateQuantumCount();
   }
 
   /*
@@ -75,7 +74,8 @@ function scheduler() {
   }
 
   /*
-   * Updates quantum count
+   * Updates quantum count and does a context switch system
+   * call if time is over.
    */
   this.updateQuantumCount = function() {
     if(++this.quantumCount % RR_QUANTUM == 0) {