Hi
I add a Halt method to the IProcessor "interface" to freeze the processor on
idle time until the next interruption.
In X86, this method simply call STI/HLT to enable interruption and to enter
halt mode.
This method is infinitely called in the main loop (in EntryModule) to avoid
the CPU to stay at 100%.
We can now work on the host machine when SharpOS runs in background.
Cédric Rousseau
Index: Kernel/Core/ADC/Architecture.cs
===================================================================
--- Kernel/Core/ADC/Architecture.cs (revision 855)
+++ Kernel/Core/ADC/Architecture.cs (working copy)
@@ -67,7 +67,7 @@
#region Processors
[AOTAttr.ADCStub]
- public static int ProcessorCount ()
+ public static int GetProcessorCount ()
{
return 0;
}
Index: Kernel/Core/ADC/IProcessor.cs
===================================================================
--- Kernel/Core/ADC/IProcessor.cs (revision 855)
+++ Kernel/Core/ADC/IProcessor.cs (working copy)
@@ -4,6 +4,7 @@
// Authors:
// William Lahti <[EMAIL PROTECTED]>
// Sander van Rossen <[EMAIL PROTECTED]>
+// Cédric Rousseau <[EMAIL PROTECTED]>
//
// Licensed under the terms of the GNU GPL v3,
// with Classpath Linking Exception for Libraries
@@ -35,5 +36,7 @@
public abstract CString8* ModelName { get; }
public abstract ProcessorFeature[] Features { get; }
+
+ public abstract void Halt ();
}
}
Index: Kernel/Core/ADC/X86/Processor.cs
===================================================================
--- Kernel/Core/ADC/X86/Processor.cs (revision 855)
+++ Kernel/Core/ADC/X86/Processor.cs (working copy)
@@ -4,6 +4,7 @@
// Authors:
// Mircea-Cristian Racasan <[EMAIL PROTECTED]>
// Sander van Rossen <[EMAIL PROTECTED]>
+// Cédric Rousseau <[EMAIL PROTECTED]>
//
// Licensed under the terms of the GNU GPL v3,
// with Classpath Linking Exception for Libraries
@@ -374,6 +375,12 @@
private uint id = 0;
public override uint ID { get { return id; } }
#endregion
+
+ public override void Halt ()
+ {
+ Asm.STI ();
+ Asm.HLT ();
+ }
}
}
Index: Kernel/Core/EntryModule.cs
===================================================================
--- Kernel/Core/EntryModule.cs (revision 855)
+++ Kernel/Core/EntryModule.cs (working copy)
@@ -6,6 +6,7 @@
// Sander van Rossen <[EMAIL PROTECTED]>
// William Lahti <[EMAIL PROTECTED]>
// Bruce Markham <[EMAIL PROTECTED]>
+// Cédric Rousseau <[EMAIL PROTECTED]>
//
// Licensed under the terms of the GNU GPL v3,
// with Classpath Linking Exception for Libraries
@@ -164,7 +165,18 @@
SetKernelStage (KernelStage.Diagnostics);
- while (stayInLoop);
+ // Infinite loop used to halt the processors
+ //FIXME We must know on each processor the current thread runs on.
+ // Halt all other procs, then halt the current one.
+ IProcessor[] procs = Architecture.GetProcessors ();
+ int procCount = Architecture.GetProcessorCount();
+ while (stayInLoop)
+ {
+ for (int i=0; i < procCount; i++)
+ {
+ procs [i].Halt ();
+ }
+ }
}
public static void DisplayBanner ()
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