diff -r 000000000000 -r 96e5fb8b040d kernel/eka/include/nkernsmp/nkern.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/include/nkernsmp/nkern.h	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,1236 @@
+// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// e32\include\nkernsmp\nkern.h
+// 
+// WARNING: This file contains some APIs which are internal and are subject
+//          to change without notice. Such APIs should therefore not be used
+//          outside the Kernel and Hardware Services package.
+//
+
+#ifndef __NKERN_H__
+#define __NKERN_H__
+
+#ifdef	__STANDALONE_NANOKERNEL__
+#undef	__IN_KERNEL__
+#define	__IN_KERNEL__
+#endif
+
+#include <e32const.h>
+#include <nklib.h>
+#include <nk_event.h>
+#include <dfcs.h>
+#include <nk_trace.h>
+#include <e32atomics.h>
+
+extern "C" {
+/** @internalComponent */
+IMPORT_C void NKFault(const char* file, TInt line);
+/** @internalComponent */
+void NKIdle(TInt aStage);
+}
+
+/**
+@publishedPartner
+@released
+*/
+#define FAULT()		NKFault(__FILE__,__LINE__)
+
+#ifdef _DEBUG
+
+/**
+@publishedPartner
+@released
+*/
+#define __NK_ASSERT_DEBUG(c)	((void) ((c)||(FAULT(),0)) )
+
+#else
+
+#define __NK_ASSERT_DEBUG(c)
+
+#endif
+
+/**
+@publishedPartner
+@released
+*/
+#define __NK_ASSERT_ALWAYS(c)	((void) ((c)||(FAULT(),0)) )
+
+/**
+	@publishedPartner
+	@released
+*/
+const TInt KNumPriorities=64;
+
+const TInt KMaxCpus=8;
+
+class NSchedulable;
+class NThread;
+class NThreadGroup;
+
+
+/** Spin lock
+
+	Used for protecting a code fragment against both interrupts and concurrent
+	execution on another processor.
+
+	List of spin locks in the nanokernel, in deadlock-prevention order:
+	A	NEventHandler::TiedLock (preemption)
+	B	NFastMutex spin locks (preemption)
+	C	Thread spin locks (preemption)
+	D	Thread group spin locks (preemption)
+	E	Per-CPU ready list lock (preemption)
+
+	a	Idle DFC list lock (interrupts)
+	b	Per-CPU exogenous IDFC queue lock (interrupts)
+	c	NTimerQ spin lock (interrupts)
+	d	Generic IPI list locks (interrupts)
+	e	NIrq spin locks (interrupts)
+	f	Per-CPU event handler list lock (interrupts)
+	z	BTrace lock (interrupts)
+
+	z must be minimum since BTrace can appear anywhere
+
+	interrupt-disabling spinlocks must be lower than preemption-disabling ones
+
+	Nestings which actually occur are:
+		A > C
+		B > C > D > E
+		c > f
+		Nothing (except possibly z) nested inside a, b, d, f
+		e is held while calling HW-poking functions (which might use other spinlocks)
+
+@publishedPartner
+@prototype
+*/
+class TSpinLock
+	{
+public:
+	enum TOrder
+		{
+		// Bit 7 of order clear for locks used with interrupts disabled
+		EOrderGenericIrqLow0	=0x00u,		// Device driver spin locks, low range
+		EOrderGenericIrqLow1	=0x01u,		// Device driver spin locks, low range
+		EOrderGenericIrqLow2	=0x02u,		// Device driver spin locks, low range
+		EOrderGenericIrqLow3	=0x03u,		// Device driver spin locks, low range
+		EOrderBTrace			=0x04u,		// BTrace lock
+		EOrderEventHandlerList	=0x07u,		// Per-CPU event handler list lock
+		EOrderCacheMaintenance  =0x08u,		// CacheMaintenance (for PL310)
+		EOrderNIrq				=0x0Au,		// NIrq lock
+		EOrderGenericIPIList	=0x0Du,		// Generic IPI list lock
+		EOrderNTimerQ			=0x10u,		// Nanokernel timer queue lock
+		EOrderExIDfcQ			=0x13u,		// Per-CPU exogenous IDFC queue list lock
+		EOrderIdleDFCList		=0x16u,		// Idle DFC list lock
+		EOrderGenericIrqHigh0	=0x18u,		// Device driver spin locks, high range
+		EOrderGenericIrqHigh1	=0x19u,		// Device driver spin locks, high range
+		EOrderGenericIrqHigh2	=0x1Au,		// Device driver spin locks, high range
+		EOrderGenericIrqHigh3	=0x1Bu,		// Device driver spin locks, high range
+
+		// Bit 7 of order set for locks used with interrupts enabled, preemption disabled
+		EOrderGenericPreLow0	=0x80u,		// Device driver spin locks, low range
+		EOrderGenericPreLow1	=0x81u,		// Device driver spin locks, low range
+		EOrderReadyList			=0x88u,		// Per-CPU ready list lock
+		EOrderThreadGroup		=0x90u,		// Thread group locks
+		EOrderThread			=0x91u,		// Thread locks
+		EOrderFastMutex			=0x98u,		// Fast mutex locks
+		EOrderEventHandlerTied	=0x9Cu,		// Event handler tied lock
+		EOrderGenericPreHigh0	=0x9Eu,		// Device driver spin locks, high range
+		EOrderGenericPreHigh1	=0x9Fu,		// Device driver spin locks, high range
+
+		EOrderNone				=0xFFu		// No order check required (e.g. for dynamic ordering)
+		};
+public:
+	IMPORT_C TSpinLock(TUint aOrder);
+	IMPORT_C void LockIrq();				/**< @internalComponent disable interrupts and acquire the lock */
+	IMPORT_C void UnlockIrq();				/**< @internalComponent release the lock and enable interrupts */
+	IMPORT_C TBool FlashIrq();				/**< @internalComponent if someone else is waiting for the lock, UnlockIrq() then LockIrq() */
+	IMPORT_C void LockOnly();				/**< @internalComponent acquire the lock, assuming interrupts/preemption already disabled */
+	IMPORT_C void UnlockOnly();				/**< @internalComponent release the lock, don't change interrupt/preemption state */
+	IMPORT_C TBool FlashOnly();				/**< @internalComponent if someone else is waiting for the lock, UnlockOnly() then LockOnly() */
+	IMPORT_C TInt LockIrqSave();			/**< @internalComponent remember original interrupt state then disable interrupts and acquire the lock */
+	IMPORT_C void UnlockIrqRestore(TInt);	/**< @internalComponent release the lock then restore original interrupt state */
+	IMPORT_C TBool FlashIrqRestore(TInt);	/**< @internalComponent if someone else is waiting for the lock, UnlockIrqRestore() then LockIrq() */
+	IMPORT_C TBool FlashPreempt();			/**< @internalComponent if someone else is waiting for the lock, UnlockOnly(); NKern::PreemptionPoint(); LockOnly(); */
+private:
+	volatile TUint64 iLock;
+	};
+
+
+/** Macro to disable interrupts and acquire the lock.
+
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_IRQ(lock)				((lock).LockIrq())
+
+/** Macro to release the lock and enable interrupts.
+
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_IRQ(lock)				(lock).UnlockIrq()
+
+/** Macro to see if someone else is waiting for the lock, enabling IRQs 
+    then disabling IRQs again.
+
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_IRQ(lock)				(lock).FlashIrq()
+
+/** Macro to remember original interrupt state then disable interrupts 
+    and acquire the lock.
+    
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_IRQSAVE(lock)			((lock).LockIrqSave())
+
+/** Macro to release the lock then restore original interrupt state to that 
+	supplied.
+	
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_IRQRESTORE(lock,irq)	(lock).UnlockIrqRestore(irq)
+
+/** Macro to see if someone else is waiting for the lock, enabling IRQs to
+	the original state supplied then disabling IRQs again.
+    
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_IRQRESTORE(lock,irq)	(lock).FlashIrqRestore(irq)
+
+/** Macro to acquire the lock. This assumes the caller has already disabled 
+    interrupts/preemption. 
+	
+	If interrupts/preemption is not disabled a run-time assert will occur
+	This is to protect against unsafe code that might lead to same core 
+	deadlock.
+	
+    In device driver code it is safer to use __SPIN_LOCK_IRQSAVE() instead, 
+	although not as efficient should interrupts aleady be disabled for the 
+	duration the lock is held.
+    
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK(lock)					((lock).LockOnly())
+
+/** Macro to release the lock, don't change interrupt/preemption state.
+
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK(lock)					(lock).UnlockOnly()
+
+/**
+@internalComponent
+*/
+#define __SPIN_FLASH(lock)					(lock).FlashOnly()
+
+/** Macro to see if someone else is waiting for the lock, enabling preemption 
+    then disabling it again.
+
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_PREEMPT(lock)			(lock).FlashPreempt()
+
+
+/** Read/Write Spin lock
+
+@publishedPartner
+@prototype
+*/
+class TRWSpinLock
+	{
+public:
+	IMPORT_C TRWSpinLock(TUint aOrder);		// Uses same order space as TSpinLock
+
+	IMPORT_C void LockIrqR();				/**< @internalComponent disable interrupts and acquire read lock */
+	IMPORT_C void UnlockIrqR();				/**< @internalComponent release read lock and enable interrupts */
+	IMPORT_C TBool FlashIrqR();				/**< @internalComponent if someone else is waiting for write lock, UnlockIrqR() then LockIrqR() */
+	IMPORT_C void LockIrqW();				/**< @internalComponent disable interrupts and acquire write lock */
+	IMPORT_C void UnlockIrqW();				/**< @internalComponent release write lock and enable interrupts */
+	IMPORT_C TBool FlashIrqW();				/**< @internalComponent if someone else is waiting for the lock, UnlockIrqW() then LockIrqW() */
+	IMPORT_C void LockOnlyR();				/**< @internalComponent acquire read lock, assuming interrupts/preemption already disabled */
+	IMPORT_C void UnlockOnlyR();			/**< @internalComponent release read lock, don't change interrupt/preemption state */
+	IMPORT_C TBool FlashOnlyR();			/**< @internalComponent if someone else is waiting for write lock, UnlockOnlyR() then LockOnlyR() */
+	IMPORT_C void LockOnlyW();				/**< @internalComponent acquire write lock, assuming interrupts/preemption already disabled */
+	IMPORT_C void UnlockOnlyW();			/**< @internalComponent release write lock, don't change interrupt/preemption state */
+	IMPORT_C TBool FlashOnlyW();			/**< @internalComponent if someone else is waiting for the lock, UnlockOnlyW() then LockOnlyW() */
+	IMPORT_C TInt LockIrqSaveR();			/**< @internalComponent disable interrupts and acquire read lock, return original interrupt state */
+	IMPORT_C void UnlockIrqRestoreR(TInt);	/**< @internalComponent release read lock and reset original interrupt state */
+	IMPORT_C TBool FlashIrqRestoreR(TInt);	/**< @internalComponent if someone else is waiting for write lock, UnlockIrqRestoreR() then LockIrqR() */
+	IMPORT_C TInt LockIrqSaveW();			/**< @internalComponent disable interrupts and acquire write lock, return original interrupt state */
+	IMPORT_C void UnlockIrqRestoreW(TInt);	/**< @internalComponent release write lock and reset original interrupt state */
+	IMPORT_C TBool FlashIrqRestoreW(TInt);	/**< @internalComponent if someone else is waiting for the lock, UnlockIrqRestoreW() then LockIrqW() */
+	IMPORT_C TBool FlashPreemptR();			/**< @internalComponent if someone else is waiting for write lock, UnlockOnlyR(); NKern::PreemptionPoint(); LockOnlyR(); */
+	IMPORT_C TBool FlashPreemptW();			/**< @internalComponent if someone else is waiting for the lock, UnlockOnlyW(); NKern::PreemptionPoint(); LockOnlyW(); */
+private:
+	volatile TUint64 iLock;
+	};
+
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_IRQ_R(lock)					(lock).LockIrqR()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_IRQ_R(lock)				(lock).UnlockIrqR()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_IRQ_R(lock)				((lock).FlashIrqR())
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_IRQ_W(lock)					(lock).LockIrqW()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_IRQ_W(lock)				(lock).UnlockIrqW()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_IRQ_W(lock)				((lock).FlashIrqW())
+
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_R(lock)						(lock).LockOnlyR()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_R(lock)					(lock).UnlockOnlyR()
+
+/**
+@internalComponent
+*/
+#define __SPIN_FLASH_R(lock)					((lock).FlashOnlyR())
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_W(lock)						(lock).LockOnlyW()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_W(lock)					(lock).UnlockOnlyW()
+
+/**
+@internalComponent
+*/
+#define __SPIN_FLASH_W(lock)					((lock).FlashOnlyW())
+
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_IRQSAVE_R(lock)				(lock).LockIrqSaveR()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_IRQRESTORE_R(lock,irq)	(lock).UnlockIrqRestoreR(irq)
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_IRQRESTORE_R(lock,irq)		((lock).FlashIrqRestoreR(irq))
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_LOCK_IRQSAVE_W(lock)				(lock).LockIrqSaveW()
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_UNLOCK_IRQRESTORE_W(lock,irq)	(lock).UnlockIrqRestoreW(irq)
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_IRQRESTORE_W(lock,irq)		((lock).FlashIrqRestoreW(irq))
+
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_PREEMPT_R(lock)			((lock).FlashPreemptR())
+
+/**
+@publishedPartner
+@prototype
+*/
+#define __SPIN_FLASH_PREEMPT_W(lock)			((lock).FlashPreemptW())
+
+
+#ifdef _DEBUG
+#define __INCLUDE_SPIN_LOCK_CHECKS__
+#endif
+
+
+/** Nanokernel fast semaphore
+
+	A light-weight semaphore class that only supports a single waiting thread,
+	suitable for the Symbian OS thread I/O semaphore.
+	
+	Initialising a NFastSemaphore involves two steps:
+	
+	- Constructing the semaphore
+	- Setting the semaphore owning thread (the one allowed to wait on it)
+	
+	For example, creating one for the current thread to wait on:
+	
+	@code
+	NFastSemaphore sem;
+	sem.iOwningThread = NKern::CurrentThread();
+	@endcode
+	
+	@publishedPartner
+	@prototype
+*/
+class NFastSemaphore
+	{
+public:
+	inline NFastSemaphore();
+	inline NFastSemaphore(NThreadBase* aThread);
+	IMPORT_C void SetOwner(NThreadBase* aThread);
+	IMPORT_C void Wait();
+	IMPORT_C void Signal();
+	IMPORT_C void SignalN(TInt aCount);
+	IMPORT_C void Reset();
+	void WaitCancel();
+
+	TInt Dec(NThreadBase* aThread);	// does mb() if >0
+	NThreadBase* Inc(TInt aCount);	// does mb()
+	NThreadBase* DoReset();	// does mb()
+public:
+	/** If >=0 the semaphore count
+		If <0, (thread>>2)|0x80000000
+		@internalComponent
+	*/
+	TInt iCount;
+
+	/** The thread allowed to wait on the semaphore
+		@internalComponent
+	*/
+	NThreadBase* iOwningThread;	
+	};
+
+/** Create a fast semaphore
+
+	@publishedPartner
+	@prototype
+*/
+inline NFastSemaphore::NFastSemaphore()
+	: iCount(0), iOwningThread(NULL)
+	{}
+
+/** Nanokernel fast mutex
+
+	A light-weight priority-inheritance mutex that can be used if the following
+	conditions apply:
+	
+	- Threads that hold the mutex never block.
+	- The mutex is never acquired in a nested fashion
+	
+	If either of these conditions is not met, a DMutex object is more appropriate.
+	
+	@publishedPartner
+	@prototype
+*/
+class NFastMutex
+	{
+public:
+	IMPORT_C NFastMutex();
+	IMPORT_C void Wait();
+	IMPORT_C void Signal();
+	IMPORT_C TBool HeldByCurrentThread();
+private:
+	void DoWaitL();
+	void DoSignalL();
+
+	friend class NKern;
+public:
+	/** @internalComponent
+
+	If mutex is free and no-one is waiting, iHoldingThread=0
+	If mutex is held and no-one is waiting, iHoldingThread points to holding thread
+	If mutex is free but threads are waiting, iHoldingThread=1
+	If mutex is held and threads are waiting, iHoldingThread points to holding thread but with bit 0 set
+	*/
+	NThreadBase* iHoldingThread;
+
+	TUint32 i_NFastMutex_Pad1;	/**< @internalComponent */
+
+	/** @internalComponent
+
+	Spin lock to protect mutex
+	*/
+	TSpinLock iMutexLock;
+
+	/** @internalComponent
+
+	List of NThreads which are waiting for the mutex. The threads are linked via
+	their iWaitLink members.
+	*/
+	TPriList<NThreadBase, KNumPriorities> iWaitQ;
+	};
+
+__ASSERT_COMPILE(!(_FOFF(NFastMutex,iMutexLock)&7));
+
+
+/**
+@publishedPartner
+@prototype
+
+The type of the callback function used by the nanokernel timer. 
+
+@see NTimer
+*/
+typedef NEventFn NTimerFn;
+
+
+
+
+/**
+@publishedPartner
+@prototype
+
+A basic relative timer provided by the nanokernel.
+
+It can generate either a one-shot interrupt or periodic interrupts.
+
+A timeout handler is called when the timer expires, either:
+- from the timer ISR - if the timer is queued via OneShot(TInt aTime) or OneShot(TInt aTime, TBool EFalse), or
+- from the nanokernel timer dfc1 thread - if the timer is queued via OneShot(TInt aTime, TBool ETrue) call, or
+- from any other dfc thread that provided DFC belongs to - if the timer is queued via OneShot(TInt aTime, TDfc& aDfc) call.
+Call-back mechanism cannot be changed in the life time of a timer.
+
+These timer objects may be manipulated from any context.
+The timers are driven from a periodic system tick interrupt,
+usually a 1ms period.
+
+@see NTimerFn
+*/
+class NTimerQ;
+class NTimer : public NEventHandler
+	{
+public:
+	/**
+	Default constructor.
+	*/
+	inline NTimer()
+		{
+		iHType = EEventHandlerNTimer;
+		i8888.iHState1 = EIdle;
+		}
+	/**
+	Constructor taking a callback function and a pointer to be passed
+	to the callback function.
+	
+	@param aFunction The callback function.
+	@param aPtr      A pointer to be passed to the callback function 
+	                 when called.
+	*/
+	inline NTimer(NTimerFn aFunction, TAny* aPtr)
+		{
+		iPtr = aPtr;
+		iFn = aFunction;
+		iHType = EEventHandlerNTimer;
+		i8888.iHState1 = EIdle;
+		}
+	IMPORT_C NTimer(NSchedulable* aTied, NTimerFn aFunction, TAny* aPtr);
+	IMPORT_C NTimer(TDfcFn aFunction, TAny* aPtr, TInt aPriority);					// create DFC, queue to be set later
+	IMPORT_C NTimer(TDfcFn aFunction, TAny* aPtr, TDfcQue* aDfcQ, TInt aPriority);	// create DFC
+	IMPORT_C void SetDfcQ(TDfcQue* aDfcQ);
+	IMPORT_C ~NTimer();
+	IMPORT_C TInt SetTied(NSchedulable* aTied);
+	IMPORT_C TInt OneShot(TInt aTime);
+	IMPORT_C TInt OneShot(TInt aTime, TBool aDfc);
+	IMPORT_C TInt OneShot(TInt aTime, TDfc& aDfc);
+	IMPORT_C TInt Again(TInt aTime);
+	IMPORT_C TBool Cancel();
+	IMPORT_C TBool IsPending();
+private:
+	enum { ECancelDestroy=1 };
+private:
+	inline TBool IsNormal()
+		{ return iHType==EEventHandlerNTimer; }
+	inline TBool IsMutating()
+		{ return iHType<KNumDfcPriorities; }
+	inline TBool IsValid()
+		{ return iHType<KNumDfcPriorities || iHType==EEventHandlerNTimer; }
+	void AddAsDFC();
+	TUint DoCancel(TUint aFlags);
+	void DoCancel0(TUint aState);
+	TBool DoCancelMutating(TUint aFlags);
+public:
+/**
+	@internalComponent
+*/
+	enum TState
+		{
+		EIdle=0,			// not queued
+							// 1 skipped so as not to clash with DFC states
+		ETransferring=2,	// being transferred from holding to ordered queue
+		EHolding=3,			// on holding queue
+		EOrdered=4,			// on ordered queue
+		ECritical=5,		// on ordered queue and in use by queue walk routine
+		EFinal=6,			// on final queue
+		EEventQ=32,			// 32+n = on event queue of CPU n (for tied timers)
+		};
+public:
+	TUint32 iTriggerTime;	/**< @internalComponent */
+	TUint32	iNTimerSpare1;	/**< @internalComponent */
+
+	/** This field is available for use by the timer client provided that
+		the timer isn't a mutating-into-DFC timer.
+		@internalTechnology */
+//	TUint8 iUserFlags;									// i8888.iHState0
+//	TUint8 iState;			/**< @internalComponent */	// i8888.iHState1
+//	TUint8 iCompleteInDfc;	/**< @internalComponent */	// i8888.iHState2
+
+
+	friend class NTimerQ;
+	friend class NSchedulable;
+	};
+
+/**
+@internalTechnology
+*/
+#define	i_NTimer_iUserFlags	i8888.iHState0
+
+/**
+@internalComponent
+*/
+#define	i_NTimer_iState		i8888.iHState1
+
+/**
+	@publishedPartner
+	@released
+*/
+typedef void (*NThreadFunction)(TAny*);
+
+/**
+	@publishedPartner
+	@released
+*/
+typedef TDfc* (*NThreadExitHandler)(NThread*);
+
+/**
+	@publishedPartner
+	@prototype
+*/
+typedef void (*NThreadStateHandler)(NThread*,TInt,TInt);
+
+/**
+	@publishedPartner
+	@prototype
+*/
+typedef void (*NThreadExceptionHandler)(TAny*,NThread*);
+
+/**
+	@publishedPartner
+	@prototype
+*/
+typedef void (*NThreadTimeoutHandler)(NThread*,TInt);
+
+/**
+	@publishedPartner
+	@prototype
+*/
+struct SNThreadHandlers
+	{
+	NThreadExitHandler iExitHandler;
+	NThreadStateHandler iStateHandler;
+	NThreadExceptionHandler iExceptionHandler;
+	NThreadTimeoutHandler iTimeoutHandler;
+	};
+
+/** @internalComponent */
+extern void NThread_Default_State_Handler(NThread*, TInt, TInt);
+
+/** @internalComponent */
+extern void NThread_Default_Exception_Handler(TAny*, NThread*);
+
+/** @internalComponent */
+#define NTHREAD_DEFAULT_EXIT_HANDLER		((NThreadExitHandler)0)
+
+/** @internalComponent */
+#define	NTHREAD_DEFAULT_STATE_HANDLER		(&NThread_Default_State_Handler)
+
+/** @internalComponent */
+#define	NTHREAD_DEFAULT_EXCEPTION_HANDLER	(&NThread_Default_Exception_Handler)
+
+/** @internalComponent */
+#define	NTHREAD_DEFAULT_TIMEOUT_HANDLER		((NThreadTimeoutHandler)0)
+
+
+/**
+	@publishedPartner
+	@prototype
+*/
+struct SFastExecTable
+	{
+	TInt iFastExecCount;			// includes implicit function#0
+	TLinAddr iFunction[1];			// first entry is for call number 1
+	};
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagClaim=0x80000000;		// claim system lock
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagRelease=0x40000000;		// release system lock
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagPreprocess=0x20000000;	// preprocess
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgMask=0x1C000000;	// 3 bits indicating additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs2=0x04000000;	// 2 additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs3=0x08000000;	// 3 additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs4=0x0C000000;	// 4 additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs5=0x10000000;	// 5 additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs6=0x14000000;	// 6 additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs7=0x18000000;	// 7 additional arguments
+
+/**
+	@publishedPartner
+	@prototype
+*/
+const TUint32 KExecFlagExtraArgs8=0x1C000000;	// 8 additional arguments
+
+
+/**
+	@publishedPartner
+	@prototype
+*/
+struct SSlowExecEntry
+	{
+	TUint32 iFlags;					// information about call
+	TLinAddr iFunction;				// address of function to be called
+	};
+
+
+/**
+	@publishedPartner
+	@prototype
+*/
+struct SSlowExecTable
+	{
+	TInt iSlowExecCount;
+	TLinAddr iInvalidExecHandler;	// used if call number invalid
+	TLinAddr iPreprocessHandler;	// used for handle lookups
+	SSlowExecEntry iEntries[1];		// first entry is for call number 0
+	};
+
+// Thread iAttributes Constants
+const TUint8 KThreadAttImplicitSystemLock=1;	/**< @internalComponent */
+const TUint8 KThreadAttAddressSpace=2;			/**< @internalComponent */
+const TUint8 KThreadAttLoggable=4;				/**< @internalComponent */
+
+
+// Thread CPU
+const TUint32 KCpuAffinityAny=0xffffffffu;		/**< @internalComponent */
+
+/** Information needed for creating a nanothread.
+
+	@publishedPartner
+	@prototype
+*/
+struct SNThreadCreateInfo
+	{
+	NThreadFunction iFunction;
+	TAny* iStackBase;
+	TInt iStackSize;
+	TInt iPriority;
+	TInt iTimeslice;
+	TUint8 iAttributes;
+	TUint32 iCpuAffinity;
+	const SNThreadHandlers* iHandlers;
+	const SFastExecTable* iFastExecTable;
+	const SSlowExecTable* iSlowExecTable;
+	const TUint32* iParameterBlock;
+	TInt iParameterBlockSize;		// if zero, iParameterBlock _is_ the initial data
+									// otherwise it points to n bytes of initial data
+	NThreadGroup* iGroup;			// NULL for lone thread
+	};
+
+/** Information needed for creating a nanothread group.
+
+	@publishedPartner
+	@prototype
+*/
+struct SNThreadGroupCreateInfo
+	{
+	TUint32 iCpuAffinity;
+	};
+
+/**	Constant for use with NKern:: functions which release a fast mutex as well
+	as performing some other operations.
+
+	@publishedPartner
+	@released
+*/
+#define	SYSTEM_LOCK		(NFastMutex*)0
+
+
+/** Idle handler function
+	Pointer to a function which is called whenever a CPU goes idle
+
+	@param	aPtr	The iPtr stored in the SCpuIdleHandler structure
+	@param	aStage	If positive, the number of processors still active
+					If zero, indicates all processors are now idle
+					-1 indicates that postamble processing is required after waking up
+
+	@publishedPartner
+	@prototype
+*/
+typedef void (*TCpuIdleHandlerFn)(TAny* aPtr, TInt aStage);
+
+/** Idle handler structure
+
+	@publishedPartner
+	@prototype
+*/
+struct SCpuIdleHandler
+	{
+	TCpuIdleHandlerFn	iHandler;
+	TAny*				iPtr;
+	volatile TBool		iPostambleRequired;
+	};
+
+
+/**
+@internalComponent
+*/
+enum TUserModeCallbackReason
+	{
+	EUserModeCallbackRun,
+	EUserModeCallbackCancel,
+	};
+
+
+/**
+A callback function executed when a thread returns to user mode.
+
+@internalComponent
+*/
+typedef void (*TUserModeCallbackFunc)(TAny* aThisPtr, TUserModeCallbackReason aReasonCode);
+
+
+/**
+An object representing a queued callback to be executed when a thread returns to user mode.
+
+@internalComponent
+*/
+class TUserModeCallback
+	{
+public:
+	TUserModeCallback(TUserModeCallbackFunc);
+	~TUserModeCallback();
+
+public:
+	TUserModeCallback* volatile iNext;
+	TUserModeCallbackFunc iFunc;
+	};
+
+TUserModeCallback* const KUserModeCallbackUnqueued = ((TUserModeCallback*)1);
+
+
+/** Main function for AP
+
+@internalTechnology
+*/
+struct SAPBootInfo;
+typedef void (*TAPBootFunc)(volatile SAPBootInfo*);
+
+
+/** Information needed to boot an AP
+
+@internalTechnology
+*/
+struct SAPBootInfo
+	{
+	TUint32				iCpu;				// Hardware CPU ID
+	TUint32				iInitStackSize;		// Size of initial stack
+	TLinAddr			iInitStackBase;		// Base of initial stack
+	TAPBootFunc			iMain;				// Address of initial function to call
+	TAny*				iArgs[4];
+	};
+
+typedef void (*NIsr)(TAny*);
+
+/** Nanokernel functions
+
+	@publishedPartner
+	@prototype
+*/
+class NKern
+	{
+public:
+	/** Bitmask values used when blocking a nanothread.
+		@see NKern::Block()
+	 */
+	enum TBlockMode 
+		{
+		EEnterCS=1,		/**< Enter thread critical section before blocking */
+		ERelease=2,		/**< Release specified fast mutex before blocking */
+		EClaim=4,		/**< Re-acquire specified fast mutex when unblocked */
+		EObstruct=8,	/**< Signifies obstruction of thread rather than lack of work to do */
+		};
+
+	/** Values that specify the context of the processor.
+		@see NKern::CurrentContext()
+	*/
+	enum TContext
+		{
+		EThread=0,			/**< The processor is in a thread context*/
+		EIDFC=1,			/**< The processor is in an IDFC context*/
+		EInterrupt=2,		/**< The processor is in an interrupt context*/
+		EEscaped=KMaxTInt	/**< Not valid a process context on target hardware*/
+		};
+
+public:
+	// Threads
+	IMPORT_C static TInt ThreadCreate(NThread* aThread, SNThreadCreateInfo& aInfo);
+	IMPORT_C static TBool ThreadSuspend(NThread* aThread, TInt aCount);
+	IMPORT_C static TBool ThreadResume(NThread* aThread);
+	IMPORT_C static TBool ThreadResume(NThread* aThread, NFastMutex* aMutex);
+	IMPORT_C static TBool ThreadForceResume(NThread* aThread);
+	IMPORT_C static TBool ThreadForceResume(NThread* aThread, NFastMutex* aMutex);
+	IMPORT_C static void ThreadRelease(NThread* aThread, TInt aReturnValue);
+	IMPORT_C static void ThreadRelease(NThread* aThread, TInt aReturnValue, NFastMutex* aMutex);
+	IMPORT_C static void ThreadSetPriority(NThread* aThread, TInt aPriority);
+	IMPORT_C static void ThreadSetPriority(NThread* aThread, TInt aPriority, NFastMutex* aMutex);
+	IMPORT_C static void ThreadRequestSignal(NThread* aThread);
+	IMPORT_C static void ThreadRequestSignal(NThread* aThread, NFastMutex* aMutex);
+	IMPORT_C static void ThreadRequestSignal(NThread* aThread, TInt aCount);
+	IMPORT_C static void ThreadKill(NThread* aThread);
+	IMPORT_C static void ThreadKill(NThread* aThread, NFastMutex* aMutex);
+	IMPORT_C static void ThreadEnterCS();
+	IMPORT_C static void ThreadLeaveCS();
+	static NThread* _ThreadEnterCS();		/**< @internalComponent */
+	static void _ThreadLeaveCS();			/**< @internalComponent */
+	IMPORT_C static TInt Block(TUint32 aTimeout, TUint aMode, NFastMutex* aMutex);
+	IMPORT_C static TInt Block(TUint32 aTimeout, TUint aMode);
+	IMPORT_C static void NanoBlock(TUint32 aTimeout, TUint aState, TAny* aWaitObj);
+	IMPORT_C static void ThreadGetUserContext(NThread* aThread, TAny* aContext, TUint32& aAvailRegistersMask);
+	IMPORT_C static void ThreadSetUserContext(NThread* aThread, TAny* aContext);
+	IMPORT_C static void ThreadGetSystemContext(NThread* aThread, TAny* aContext, TUint32& aAvailRegistersMask);
+	static void ThreadModifyUsp(NThread* aThread, TLinAddr aUsp);
+	IMPORT_C static TInt FreezeCpu();													/**< @internalComponent */
+	IMPORT_C static void EndFreezeCpu(TInt aCookie);									/**< @internalComponent */
+	IMPORT_C static TUint32 ThreadSetCpuAffinity(NThread* aThread, TUint32 aAffinity);	/**< @internalComponent */
+	IMPORT_C static void ThreadSetTimeslice(NThread* aThread, TInt aTimeslice);			/**< @internalComponent */
+	IMPORT_C static TUint64 ThreadCpuTime(NThread* aThread);							/**< @internalComponent */
+	IMPORT_C static TUint32 CpuTimeMeasFreq();											/**< @internalComponent */
+	static TInt QueueUserModeCallback(NThreadBase* aThread, TUserModeCallback* aCallback);	/**< @internalComponent */
+	static void MoveUserModeCallbacks(NThreadBase* aSrcThread, NThreadBase* aDestThread);	/**< @internalComponent */
+	static void CancelUserModeCallbacks();												/**< @internalComponent */
+
+	// Thread Groups
+	IMPORT_C static TInt GroupCreate(NThreadGroup* aGroup, SNThreadGroupCreateInfo& aInfo);
+	IMPORT_C static void GroupDestroy(NThreadGroup* aGroup);
+	IMPORT_C static NThreadGroup* CurrentGroup();
+	IMPORT_C static NThreadGroup* LeaveGroup();
+	IMPORT_C static void JoinGroup(NThreadGroup* aGroup);
+	IMPORT_C static TUint32 GroupSetCpuAffinity(NThreadGroup* aGroup, TUint32 aAffinity);
+
+	// Fast semaphores
+	IMPORT_C static void FSSetOwner(NFastSemaphore* aSem,NThreadBase* aThread);
+	IMPORT_C static void FSWait(NFastSemaphore* aSem);
+	IMPORT_C static void FSSignal(NFastSemaphore* aSem);
+	IMPORT_C static void FSSignal(NFastSemaphore* aSem, NFastMutex* aMutex);
+	IMPORT_C static void FSSignalN(NFastSemaphore* aSem, TInt aCount);
+	IMPORT_C static void FSSignalN(NFastSemaphore* aSem, TInt aCount, NFastMutex* aMutex);
+
+	// Fast mutexes
+	IMPORT_C static void FMWait(NFastMutex* aMutex);
+	IMPORT_C static void FMSignal(NFastMutex* aMutex);
+	IMPORT_C static TBool FMFlash(NFastMutex* aMutex);
+
+	// Scheduler
+	IMPORT_C static void Lock();
+	IMPORT_C static NThread* LockC();
+	IMPORT_C static void Unlock();
+	IMPORT_C static TInt PreemptionPoint();
+
+	// Interrupts
+	IMPORT_C static TInt DisableAllInterrupts();
+	IMPORT_C static TInt DisableInterrupts(TInt aLevel);
+	IMPORT_C static void RestoreInterrupts(TInt aRestoreData);
+	IMPORT_C static void EnableAllInterrupts();
+
+	// Read-modify-write
+	inline static TInt LockedInc(TInt& aCount)
+		{ return __e32_atomic_add_ord32(&aCount,1); }
+	inline static TInt LockedDec(TInt& aCount)
+		{ return __e32_atomic_add_ord32(&aCount,0xffffffff); }
+	inline static TInt LockedAdd(TInt& aDest, TInt aSrc)
+		{ return __e32_atomic_add_ord32(&aDest,aSrc); }
+	inline static TInt64 LockedInc(TInt64& aCount)
+		{ return __e32_atomic_add_ord64(&aCount,1); }
+	inline static TInt64 LockedDec(TInt64& aCount)
+		{ return __e32_atomic_add_ord64(&aCount,TUint64(TInt64(-1))); }
+	inline static TInt64 LockedAdd(TInt64& aDest, TInt64 aSrc)		/**< @internalComponent */
+		{ return __e32_atomic_add_ord64(&aDest,aSrc); }
+	inline static TUint32 LockedSetClear(TUint32& aDest, TUint32 aClearMask, TUint32 aSetMask)
+		{ return __e32_atomic_axo_ord32(&aDest,~(aClearMask|aSetMask),aSetMask); }
+	inline static TUint16 LockedSetClear16(TUint16& aDest, TUint16 aClearMask, TUint16 aSetMask)	/**< @internalComponent */
+		{ return __e32_atomic_axo_ord16(&aDest,TUint16(~(aClearMask|aSetMask)),aSetMask); }
+	inline static TUint8 LockedSetClear8(TUint8& aDest, TUint8 aClearMask, TUint8 aSetMask)
+		{ return __e32_atomic_axo_ord8(&aDest,TUint8(~(aClearMask|aSetMask)),aSetMask); }
+	inline static TInt SafeInc(TInt& aCount)
+		{ return __e32_atomic_tas_ord32(&aCount,1,1,0); }
+	inline static TInt SafeDec(TInt& aCount)
+		{ return __e32_atomic_tas_ord32(&aCount,1,-1,0); }
+	inline static TInt AddIfGe(TInt& aCount, TInt aLimit, TInt aInc)	/**< @internalComponent */
+		{ return __e32_atomic_tas_ord32(&aCount,aLimit,aInc,0); }
+	inline static TInt AddIfLt(TInt& aCount, TInt aLimit, TInt aInc)	/**< @internalComponent */
+		{ return __e32_atomic_tas_ord32(&aCount,aLimit,0,aInc); }
+	inline static TAny* SafeSwap(TAny* aNewValue, TAny*& aPtr)
+		{ return __e32_atomic_swp_ord_ptr(&aPtr, aNewValue); }
+	inline static TUint8 SafeSwap8(TUint8 aNewValue, TUint8& aPtr)
+		{ return __e32_atomic_swp_ord8(&aPtr, aNewValue); }
+	inline static TUint16 SafeSwap16(TUint16 aNewValue, TUint16& aPtr)						/**< @internalComponent */
+		{ return __e32_atomic_swp_ord16(&aPtr, aNewValue); }
+	inline static TBool CompareAndSwap(TAny*& aPtr, TAny* aExpected, TAny* aNew)			/**< @internalComponent */
+		{ return __e32_atomic_cas_ord_ptr(&aPtr, &aExpected, aNew); }
+	inline static TBool CompareAndSwap8(TUint8& aPtr, TUint8 aExpected, TUint8 aNew)		/**< @internalComponent */
+		{ return __e32_atomic_cas_ord8(&aPtr, (TUint8*)&aExpected, (TUint8)aNew); }
+	inline static TBool CompareAndSwap16(TUint16& aPtr, TUint16 aExpected, TUint16 aNew)	/**< @internalComponent */
+		{ return __e32_atomic_cas_ord16(&aPtr, (TUint16*)&aExpected, (TUint16)aNew); }
+	inline static TUint32 SafeSwap(TUint32 aNewValue, TUint32& aPtr)						/**< @internalComponent */
+		{ return __e32_atomic_swp_ord32(&aPtr, aNewValue); }
+	inline static TUint SafeSwap(TUint aNewValue, TUint& aPtr)								/**< @internalComponent */
+		{ return __e32_atomic_swp_ord32(&aPtr, aNewValue); }
+	inline static TInt SafeSwap(TInt aNewValue, TInt& aPtr)									/**< @internalComponent */
+		{ return __e32_atomic_swp_ord32(&aPtr, aNewValue); }
+	inline static TBool CompareAndSwap(TUint32& aPtr, TUint32 aExpected, TUint32 aNew)		/**< @internalComponent */
+		{ return __e32_atomic_cas_ord32(&aPtr, &aExpected, aNew); }
+	inline static TBool CompareAndSwap(TUint& aPtr, TUint aExpected, TUint aNew)			/**< @internalComponent */
+		{ return __e32_atomic_cas_ord32(&aPtr, (TUint32*)&aExpected, (TUint32)aNew); }
+	inline static TBool CompareAndSwap(TInt& aPtr, TInt aExpected, TInt aNew)				/**< @internalComponent */
+		{ return __e32_atomic_cas_ord32(&aPtr, (TUint32*)&aExpected, (TUint32)aNew); }
+
+
+	// Miscellaneous
+	IMPORT_C static NThread* CurrentThread();
+	IMPORT_C static TInt CurrentCpu();										/**< @internalComponent */
+	IMPORT_C static TInt NumberOfCpus();									/**< @internalComponent */
+	IMPORT_C static void LockSystem();
+	IMPORT_C static void UnlockSystem();
+	IMPORT_C static TBool FlashSystem();
+	IMPORT_C static void WaitForAnyRequest();
+	IMPORT_C static void Sleep(TUint32 aTime);
+	IMPORT_C static void Exit();
+	IMPORT_C static void DeferredExit();
+	IMPORT_C static void YieldTimeslice();									/**< @internalComponent */
+	IMPORT_C static void RotateReadyList(TInt aPriority);					
+	IMPORT_C static void RotateReadyList(TInt aPriority, TInt aCpu);		/**< @internalTechnology */
+	IMPORT_C static void RecordIntLatency(TInt aLatency, TInt aIntMask);	/**< @internalTechnology */
+	IMPORT_C static void RecordThreadLatency(TInt aLatency);				/**< @internalTechnology */
+	IMPORT_C static TUint32 TickCount();
+	IMPORT_C static TInt TickPeriod();
+	IMPORT_C static TInt TimerTicks(TInt aMilliseconds);
+	IMPORT_C static TInt TimesliceTicks(TUint32 aMicroseconds);				/**< @internalTechnology */
+	IMPORT_C static TInt CurrentContext();
+	IMPORT_C static TUint32 FastCounter();
+	IMPORT_C static TInt FastCounterFrequency();
+	IMPORT_C static TUint64 Timestamp();
+	IMPORT_C static TUint32 TimestampFrequency();
+	static void Init0(TAny* aVariantData);
+	static void Init(NThread* aThread, SNThreadCreateInfo& aInfo);
+	static TInt BootAP(volatile SAPBootInfo* aInfo);
+	IMPORT_C static TBool KernelLocked(TInt aCount=0);						/**< @internalTechnology */
+	IMPORT_C static NFastMutex* HeldFastMutex();							/**< @internalTechnology */
+	static void Idle();	
+	IMPORT_C static SCpuIdleHandler* CpuIdleHandler();						/**< @internalTechnology */
+	static void NotifyCrash(const TAny* a0, TInt a1);						/**< @internalTechnology */
+	IMPORT_C static TBool Crashed();
+	static TUint32 IdleGenerationCount();
+
+	// Debugger support
+	typedef void (*TRescheduleCallback)(NThread*);
+	IMPORT_C static void SchedulerHooks(TLinAddr& aStart, TLinAddr& aEnd);
+	IMPORT_C static void InsertSchedulerHooks();
+	IMPORT_C static void RemoveSchedulerHooks();
+	IMPORT_C static void SetRescheduleCallback(TRescheduleCallback aCallback);
+
+	// Interrupts
+	enum TIrqInitFlags
+		{
+		EIrqInit_FallingEdge=0,
+		EIrqInit_RisingEdge=2,
+		EIrqInit_LevelLow=1,
+		EIrqInit_LevelHigh=3,
+		EIrqInit_Shared=0x10,
+		EIrqInit_Count=0x20,
+		};
+
+	enum TIrqBindFlags
+		{
+		EIrqBind_Raw=1,
+		EIrqBind_Count=2,
+		EIrqBind_Exclusive=4,
+		EIrqBind_Tied=8
+		};
+
+	enum TIrqIdBits
+		{
+		EIrqIndexMask = 0x0000ffff,	// bottom 16 bits is IRQ number if top 16 bits all zero
+									// otherwise is IRQ handler index
+		EIrqCookieMask = 0x7fff0000,
+		EIrqCookieShift = 16
+		};
+
+	static void InterruptInit0();
+	IMPORT_C static TInt InterruptInit(TInt aId, TUint32 aFlags, TInt aVector, TUint32 aHwId, TAny* aExt=0);
+	IMPORT_C static TInt InterruptBind(TInt aId, NIsr aIsr, TAny* aPtr, TUint32 aFlags, NSchedulable* aTied);
+	IMPORT_C static TInt InterruptUnbind(TInt aId);
+	IMPORT_C static TInt InterruptEnable(TInt aId);
+	IMPORT_C static TInt InterruptDisable(TInt aId);
+	IMPORT_C static TInt InterruptClear(TInt aId);
+	IMPORT_C static TInt InterruptSetPriority(TInt aId, TInt aPri);
+	IMPORT_C static TInt InterruptSetCpuMask(TInt aId, TUint32 aMask);
+	IMPORT_C static void Interrupt(TInt aIrqNo);
+	};
+
+
+/** Create a fast semaphore
+
+	@publishedPartner
+	@prototype
+*/
+inline NFastSemaphore::NFastSemaphore(NThreadBase* aThread)
+	:	iCount(0),
+		iOwningThread(aThread ? aThread : (NThreadBase*)NKern::CurrentThread())
+	{
+	}
+
+
+class TGenericIPI;
+
+/**
+@internalComponent
+*/
+typedef void (*TGenericIPIFn)(TGenericIPI*);
+
+/**
+@internalComponent
+*/
+class TGenericIPI : public SDblQueLink
+	{
+public:
+	void Queue(TGenericIPIFn aFunc, TUint32 aCpuMask);
+	void QueueAll(TGenericIPIFn aFunc);
+	void QueueAllOther(TGenericIPIFn aFunc);
+	void WaitEntry();
+	void WaitCompletion();
+public:
+	TGenericIPIFn			iFunc;
+	volatile TUint32		iCpusIn;
+	volatile TUint32		iCpusOut;
+	};
+
+/**
+@internalComponent
+*/
+class TStopIPI : public TGenericIPI
+	{
+public:
+	void StopCPUs();
+	void ReleaseCPUs();
+	static void Isr(TGenericIPI*);
+public:
+	volatile TInt iFlag;
+	};
+
+#include <ncern.h>
+#endif