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[NTOS]

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Move spinlock inline functions into their own header, so they can be shared with hal.

svn path=/branches/ros-amd64-bringup/; revision=44893
This commit is contained in:
Timo Kreuzer 2010-01-02 19:41:03 +00:00
parent 78490595ed
commit 3a0ef6c524
3 changed files with 96 additions and 81 deletions
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81
reactos/ntoskrnl/include/internal/ke_x.h
View file

@ -101,32 +101,7 @@ KeGetPreviousMode(VOID)
} \
}
VOID
NTAPI
Kii386SpinOnSpinLock(PKSPIN_LOCK SpinLock, ULONG Flags);
#ifndef CONFIG_SMP
//
// Spinlock Acquire at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxAcquireSpinLock(IN PKSPIN_LOCK SpinLock)
{
/* On UP builds, spinlocks don't exist at IRQL >= DISPATCH */
UNREFERENCED_PARAMETER(SpinLock);
}
//
// Spinlock Release at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxReleaseSpinLock(IN PKSPIN_LOCK SpinLock)
{
/* On UP builds, spinlocks don't exist at IRQL >= DISPATCH */
UNREFERENCED_PARAMETER(SpinLock);
}
//
// This routine protects against multiple CPU acquires, it's meaningless on UP.
@ -307,62 +282,6 @@ KiReleaseTimerLock(IN PKSPIN_LOCK_QUEUE LockQueue)
#else
//
// Spinlock Acquisition at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxAcquireSpinLock(IN PKSPIN_LOCK SpinLock)
{
#ifdef DBG
/* Make sure that we don't own the lock already */
if (((KSPIN_LOCK)KeGetCurrentThread() | 1) == *SpinLock)
{
/* We do, bugcheck! */
KeBugCheckEx(SPIN_LOCK_ALREADY_OWNED, (ULONG_PTR)SpinLock, 0, 0, 0);
}
#endif
/* Try to acquire the lock */
while (InterlockedBitTestAndSet((PLONG)SpinLock, 0))
{
#if defined(_M_IX86) && defined(DBG)
/* On x86 debug builds, we use a much slower but useful routine */
Kii386SpinOnSpinLock(SpinLock, 5);
#else
/* It's locked... spin until it's unlocked */
while (*(volatile KSPIN_LOCK *)SpinLock & 1)
{
/* Yield and keep looping */
YieldProcessor();
}
#endif
}
#ifdef DBG
/* On debug builds, we OR in the KTHREAD */
*SpinLock = (KSPIN_LOCK)KeGetCurrentThread() | 1;
#endif
}
//
// Spinlock Release at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxReleaseSpinLock(IN PKSPIN_LOCK SpinLock)
{
#if DBG
/* Make sure that the threads match */
if (((KSPIN_LOCK)KeGetCurrentThread() | 1) != *SpinLock)
{
/* They don't, bugcheck */
KeBugCheckEx(SPIN_LOCK_NOT_OWNED, (ULONG_PTR)SpinLock, 0, 0, 0);
}
#endif
/* Clear the lock */
InterlockedAnd((PLONG)SpinLock, 0);
}
FORCEINLINE
VOID
KiAcquireDispatcherObject(IN DISPATCHER_HEADER* Object)

1
reactos/ntoskrnl/include/internal/ntoskrnl.h
View file

@ -83,6 +83,7 @@
#include "../kdbg/kdb.h"
#endif
#include "dbgk.h"
#include "spinlock.h"
#include "tag.h"
#include "test.h"
#include "inbv.h"

95
reactos/ntoskrnl/include/internal/spinlock.h Normal file
View file

@ -0,0 +1,95 @@
/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL - See COPYING in the top level directory
* FILE: ntoskrnl/include/spinlock.h
* PURPOSE: Internal Inlined Functions for spinlocks, shared with HAL
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
*/
VOID
NTAPI
Kii386SpinOnSpinLock(PKSPIN_LOCK SpinLock, ULONG Flags);
#ifndef CONFIG_SMP
//
// Spinlock Acquire at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxAcquireSpinLock(IN PKSPIN_LOCK SpinLock)
{
/* On UP builds, spinlocks don't exist at IRQL >= DISPATCH */
UNREFERENCED_PARAMETER(SpinLock);
}
//
// Spinlock Release at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxReleaseSpinLock(IN PKSPIN_LOCK SpinLock)
{
/* On UP builds, spinlocks don't exist at IRQL >= DISPATCH */
UNREFERENCED_PARAMETER(SpinLock);
}
#else
//
// Spinlock Acquisition at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxAcquireSpinLock(IN PKSPIN_LOCK SpinLock)
{
#ifdef DBG
/* Make sure that we don't own the lock already */
if (((KSPIN_LOCK)KeGetCurrentThread() | 1) == *SpinLock)
{
/* We do, bugcheck! */
KeBugCheckEx(SPIN_LOCK_ALREADY_OWNED, (ULONG_PTR)SpinLock, 0, 0, 0);
}
#endif
/* Try to acquire the lock */
while (InterlockedBitTestAndSet((PLONG)SpinLock, 0))
{
#if defined(_M_IX86) && defined(DBG)
/* On x86 debug builds, we use a much slower but useful routine */
Kii386SpinOnSpinLock(SpinLock, 5);
#else
/* It's locked... spin until it's unlocked */
while (*(volatile KSPIN_LOCK *)SpinLock & 1)
{
/* Yield and keep looping */
YieldProcessor();
}
#endif
}
#ifdef DBG
/* On debug builds, we OR in the KTHREAD */
*SpinLock = (KSPIN_LOCK)KeGetCurrentThread() | 1;
#endif
}
//
// Spinlock Release at IRQL >= DISPATCH_LEVEL
//
FORCEINLINE
VOID
KxReleaseSpinLock(IN PKSPIN_LOCK SpinLock)
{
#if DBG
/* Make sure that the threads match */
if (((KSPIN_LOCK)KeGetCurrentThread() | 1) != *SpinLock)
{
/* They don't, bugcheck */
KeBugCheckEx(SPIN_LOCK_NOT_OWNED, (ULONG_PTR)SpinLock, 0, 0, 0);
}
#endif
/* Clear the lock */
InterlockedAnd((PLONG)SpinLock, 0);
}
#endif