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added KiAcquire/ReleaseSpinLock

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svn path=/trunk/; revision=7759
This commit is contained in:
Gunnar Dalsnes 2004-01-18 22:41:53 +00:00
parent 68ac8c2fb9
commit f3c9b196a6
4 changed files with 67 additions and 41 deletions
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8
reactos/include/ddk/kefuncs.h
View file

@ -10,6 +10,10 @@
VOID STDCALL KeAttachProcess (struct _EPROCESS* Process);
VOID FASTCALL KiAcquireSpinLock(PKSPIN_LOCK SpinLock);
VOID FASTCALL KiReleaseSpinLock(PKSPIN_LOCK SpinLock);
VOID KeDrainApcQueue(VOID);
struct _KPROCESS* KeGetCurrentProcess(VOID);
@ -516,8 +520,8 @@ KfReleaseSpinLock (
VOID STDCALL KiDeliverApc(ULONG Unknown1,
ULONG Unknown2,
ULONG Unknown3);
ULONG Unknown2,
ULONG Unknown3);
VOID STDCALL KiDispatchInterrupt(VOID);

88
reactos/ntoskrnl/ke/spinlock.c
View file

@ -1,4 +1,4 @@
/* $Id: spinlock.c,v 1.19 2003/09/25 15:54:42 navaraf Exp $
/* $Id: spinlock.c,v 1.20 2004/01/18 22:41:53 gdalsnes Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -44,12 +44,12 @@ KeSynchronizeExecution (PKINTERRUPT Interrupt,
KIRQL oldlvl;
BOOLEAN ret;
KeRaiseIrql(Interrupt->SynchLevel,&oldlvl);
KeAcquireSpinLockAtDpcLevel(Interrupt->IrqLock);
KeRaiseIrql(Interrupt->SynchLevel, &oldlvl);
KiAcquireSpinLock(Interrupt->IrqLock);
ret = SynchronizeRoutine(SynchronizeContext);
KeReleaseSpinLockFromDpcLevel(Interrupt->IrqLock);
KiReleaseSpinLock(Interrupt->IrqLock);
KeLowerIrql(oldlvl);
return(ret);
@ -77,27 +77,8 @@ KeInitializeSpinLock (PKSPIN_LOCK SpinLock)
VOID FASTCALL
KefAcquireSpinLockAtDpcLevel(PKSPIN_LOCK SpinLock)
{
ULONG i;
/*
* FIXME: This depends on gcc assembling this test to a single load from
* the spinlock's value.
*/
if (*SpinLock >= 2)
{
DbgPrint("Lock %x has bad value %x\n", SpinLock, *SpinLock);
KEBUGCHECK(0);
}
while ((i = InterlockedExchange((LONG *)SpinLock, 1)) == 1)
{
#ifndef MP
DbgPrint("Spinning on spinlock %x current value %x\n", SpinLock, i);
KEBUGCHECK(0);
#else /* not MP */
/* Avoid reading the value again too fast */
#endif /* MP */
}
assert(KeGetCurrentIrql() == DISPATCH_LEVEL);
KiAcquireSpinLock(SpinLock);
}
#undef KeAcquireSpinLockAtDpcLevel
@ -114,7 +95,7 @@ KeAcquireSpinLockAtDpcLevel (PKSPIN_LOCK SpinLock)
* SpinLock = Spinlock to acquire
*/
{
KefAcquireSpinLockAtDpcLevel(SpinLock);
KefAcquireSpinLockAtDpcLevel(SpinLock);
}
#undef KefReleaseSpinLockFromDpcLevel
@ -125,12 +106,8 @@ KeAcquireSpinLockAtDpcLevel (PKSPIN_LOCK SpinLock)
VOID FASTCALL
KefReleaseSpinLockFromDpcLevel(PKSPIN_LOCK SpinLock)
{
if (*SpinLock != 1)
{
DbgPrint("Releasing unacquired spinlock %x\n", SpinLock);
KEBUGCHECK(0);
}
(void)InterlockedExchange((LONG *)SpinLock, 0);
assert(KeGetCurrentIrql() == DISPATCH_LEVEL);
KiReleaseSpinLock(SpinLock);
}
#undef KeReleaseSpinLockFromDpcLevel
@ -147,7 +124,52 @@ KeReleaseSpinLockFromDpcLevel (PKSPIN_LOCK SpinLock)
* SpinLock = Spinlock to release
*/
{
KefReleaseSpinLockFromDpcLevel(SpinLock);
KefReleaseSpinLockFromDpcLevel(SpinLock);
}
/*
* @implemented
*/
VOID FASTCALL
KiAcquireSpinLock(PKSPIN_LOCK SpinLock)
{
ULONG i;
/*
* FIXME: This depends on gcc assembling this test to a single load from
* the spinlock's value.
*/
if (*SpinLock >= 2)
{
DbgPrint("Lock %x has bad value %x\n", SpinLock, *SpinLock);
KEBUGCHECK(0);
}
while ((i = InterlockedExchange((LONG *)SpinLock, 1)) == 1)
{
#ifndef MP
DbgPrint("Spinning on spinlock %x current value %x\n", SpinLock, i);
KEBUGCHECK(0);
#else /* not MP */
/* Avoid reading the value again too fast */
#endif /* MP */
}
}
/*
* @implemented
*/
VOID FASTCALL
KiReleaseSpinLock(PKSPIN_LOCK SpinLock)
{
if (*SpinLock != 1)
{
DbgPrint("Releasing unacquired spinlock %x\n", SpinLock);
KEBUGCHECK(0);
}
(void)InterlockedExchange((LONG *)SpinLock, 0);
}
/* EOF */

6
reactos/ntoskrnl/ntoskrnl.def
View file

@ -1,4 +1,4 @@
; $Id: ntoskrnl.def,v 1.171 2003/12/31 05:33:03 jfilby Exp $
; $Id: ntoskrnl.def,v 1.172 2004/01/18 22:34:05 gdalsnes Exp $
;
; reactos/ntoskrnl/ntoskrnl.def
;
@ -475,14 +475,14 @@ KeWaitForSingleObject@20
;@KefAcquireSpinLockAtDpcLevel
;@KefReleaseSpinLockFromDpcLevel
;Kei386EoiHelper
;@KiAcquireSpinLock@4
@KiAcquireSpinLock@4
;KiBugCheckData DATA
;KiCoprocessorError@0
KiDeliverApc@12
KiDispatchInterrupt@0
KiInterruptDispatch2@8
;KiIpiServiceRoutine@8
;@KiReleaseSpinLock@4
@KiReleaseSpinLock@4
;KiUnexpectedInterrupt
;Kii386SpinOnSpinLock
KiRawTicks DATA

6
reactos/ntoskrnl/ntoskrnl.edf
View file

@ -1,4 +1,4 @@
; $Id: ntoskrnl.edf,v 1.158 2003/12/31 05:33:03 jfilby Exp $
; $Id: ntoskrnl.edf,v 1.159 2004/01/18 22:34:05 gdalsnes Exp $
;
; reactos/ntoskrnl/ntoskrnl.def
;
@ -476,14 +476,14 @@ KeWaitForSingleObject=KeWaitForSingleObject@20
KefAcquireSpinLockAtDpcLevel=@KefAcquireSpinLockAtDpcLevel@4
KefReleaseSpinLockFromDpcLevel=@KefReleaseSpinLockFromDpcLevel@4
;Kei386EoiHelper
;KiAcquireSpinLock@4
KiAcquireSpinLock=@KiAcquireSpinLock@4
;KiBugCheckData DATA
;KiCoprocessorError@0
KiDeliverApc=KiDeliverApc@12
KiDispatchInterrupt=KiDispatchInterrupt@0
KiInterruptDispatch2=KiInterruptDispatch2@8
;KiIpiServiceRoutine@8
;KiReleaseSpinLock@4
KiReleaseSpinLock=@KiReleaseSpinLock@4
;KiUnexpectedInterrupt
;Kii386SpinOnSpinLock
KiRawTicks DATA