#include <ntoskrnl.h>
#include <debug.h>

Include dependency graph for spinlock.c:

Macros
#define	NDEBUG

#define	LQ_WAIT 1

#define	LQ_OWN 2

Functions
VOID FASTCALL	KeAcquireQueuedSpinLockAtDpcLevel (IN PKSPIN_LOCK_QUEUE LockHandle)

VOID FASTCALL	KeReleaseQueuedSpinLockFromDpcLevel (IN PKSPIN_LOCK_QUEUE LockHandle)

KIRQL NTAPI	KeAcquireInterruptSpinLock (IN PKINTERRUPT Interrupt)

VOID NTAPI	KeReleaseInterruptSpinLock (IN PKINTERRUPT Interrupt, IN KIRQL OldIrql)

VOID NTAPI	_KeInitializeSpinLock (IN PKSPIN_LOCK SpinLock)

VOID NTAPI	KeAcquireSpinLockAtDpcLevel (IN PKSPIN_LOCK SpinLock)

VOID NTAPI	KeReleaseSpinLockFromDpcLevel (IN PKSPIN_LOCK SpinLock)

VOID FASTCALL	KefAcquireSpinLockAtDpcLevel (IN PKSPIN_LOCK SpinLock)

VOID FASTCALL	KefReleaseSpinLockFromDpcLevel (IN PKSPIN_LOCK SpinLock)

VOID FASTCALL	KiAcquireSpinLock (IN PKSPIN_LOCK SpinLock)

VOID FASTCALL	KiReleaseSpinLock (IN PKSPIN_LOCK SpinLock)

BOOLEAN FASTCALL	KeTryToAcquireSpinLockAtDpcLevel (IN OUT PKSPIN_LOCK SpinLock)

VOID FASTCALL	KeAcquireInStackQueuedSpinLockAtDpcLevel (IN PKSPIN_LOCK SpinLock, IN PKLOCK_QUEUE_HANDLE LockHandle)

VOID FASTCALL	KeReleaseInStackQueuedSpinLockFromDpcLevel (IN PKLOCK_QUEUE_HANDLE LockHandle)

KIRQL FASTCALL	KeAcquireSpinLockForDpc (IN PKSPIN_LOCK SpinLock)

VOID FASTCALL	KeReleaseSpinLockForDpc (IN PKSPIN_LOCK SpinLock, IN KIRQL OldIrql)

VOID FASTCALL	KeAcquireInStackQueuedSpinLockForDpc (IN PKSPIN_LOCK SpinLock, IN PKLOCK_QUEUE_HANDLE LockHandle)

VOID FASTCALL	KeReleaseInStackQueuedSpinLockForDpc (IN PKLOCK_QUEUE_HANDLE LockHandle)

BOOLEAN FASTCALL	KeTestSpinLock (IN PKSPIN_LOCK SpinLock)

Macro Definition Documentation

◆ LQ_OWN

#define LQ_OWN 2

Definition at line 16 of file spinlock.c.

◆ LQ_WAIT

#define LQ_WAIT 1

Definition at line 15 of file spinlock.c.

◆ NDEBUG

#define NDEBUG

Definition at line 12 of file spinlock.c.

Function Documentation

◆ _KeInitializeSpinLock()

VOID NTAPI _KeInitializeSpinLock ( IN PKSPIN_LOCK SpinLock )

Definition at line 180 of file spinlock.c.

 {
     /* Clear it */
     *SpinLock = 0;
 }

◆ KeAcquireInStackQueuedSpinLockAtDpcLevel()

VOID FASTCALL KeAcquireInStackQueuedSpinLockAtDpcLevel	(	IN PKSPIN_LOCK	SpinLock,
		IN PKLOCK_QUEUE_HANDLE	LockHandle
	)

Definition at line 337 of file spinlock.c.

 {
 #ifdef CONFIG_SMP
     /* Set it up properly */
     LockHandle->LockQueue.Next = NULL;
     LockHandle->LockQueue.Lock = SpinLock;
 #if 0
     KeAcquireQueuedSpinLockAtDpcLevel(LockHandle->LockQueue.Next);
 #else
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)LockHandle->LockQueue.Lock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Acquire the lock */
     KxAcquireSpinLock(LockHandle->LockQueue.Lock); // HACK
 #endif
 #endif
 }

Referenced by KiAcquireApcLockAtSynchLevel(), and KiAcquireDeviceQueueLock().

◆ KeAcquireInStackQueuedSpinLockForDpc()

VOID FASTCALL KeAcquireInStackQueuedSpinLockForDpc	(	IN PKSPIN_LOCK	SpinLock,
		IN PKLOCK_QUEUE_HANDLE	LockHandle
	)

Definition at line 420 of file spinlock.c.

 {
     UNIMPLEMENTED;
     return;
 }

◆ KeAcquireInterruptSpinLock()

KIRQL NTAPI KeAcquireInterruptSpinLock ( IN PKINTERRUPT Interrupt )

Definition at line 148 of file spinlock.c.

 {
     KIRQL OldIrql;
 
     /* Raise IRQL */
     KeRaiseIrql(Interrupt->SynchronizeIrql, &OldIrql);
 
     /* Acquire spinlock on MP */
     KeAcquireSpinLockAtDpcLevel(Interrupt->ActualLock);
     return OldIrql;
 }

Referenced by i8042DpcRoutineMouseTimeout(), i8042KbdDpcRoutine(), i8042MouDpcRoutine(), i8042PacketDpc(), i8042StartPacket(), InPortDpcForIsr(), KeConnectInterrupt(), KeDisconnectInterrupt(), KiInterruptDispatch2(), Mx::MxAcquireInterruptSpinLock(), PortAcquireSpinLock(), and StartProcedure().

◆ KeAcquireQueuedSpinLockAtDpcLevel()

VOID FASTCALL KeAcquireQueuedSpinLockAtDpcLevel ( IN PKSPIN_LOCK_QUEUE LockHandle )

Definition at line 99 of file spinlock.c.

 {
 #ifdef CONFIG_SMP
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)LockHandle->Lock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Do the inlined function */
     KxAcquireSpinLock(LockHandle->Lock);
 #endif
 }

Referenced by KeAcquireInStackQueuedSpinLockAtDpcLevel().

◆ KeAcquireSpinLockAtDpcLevel()

VOID NTAPI KeAcquireSpinLockAtDpcLevel ( IN PKSPIN_LOCK SpinLock )

Definition at line 192 of file spinlock.c.

 {
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)SpinLock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Do the inlined function */
     KxAcquireSpinLock(SpinLock);
 }

Referenced by _Function_class_(), AcpiOsAcquireLock(), CancelQueued(), CcPerformReadAhead(), CcPurgeCacheSection(), CcRosCreateVacb(), CcRosDeleteFileCache(), CcRosFreeUnusedVacb(), CcRosInitializeFileCache(), CcRosLookupVacb(), CcRosMarkDirtyVacb(), CcRosReleaseFileCache(), CcRosTraceCacheMap(), CcRosTrimCache(), CcRosUnmarkDirtyVacb(), ClasspReleaseQueue(), EthFilterDprIndicateReceiveComplete(), ExpTimerApcKernelRoutine(), ExTimerRundown(), CPortPinWaveCyclic::GeneratePositionEvents(), InterfacePciDevicePresent(), InterfacePciDevicePresentEx(), IntVideoPortResetDisplayParametersEx(), IServiceGroupDpc(), KeAcquireInterruptSpinLock(), KeIpiGenericCall(), KeStartProfile(), KeStopProfile(), KeSynchronizeExecution(), KiRetireDpcList(), KsCancelRoutine(), KsMoveIrpsOnCancelableQueue(), KsRemoveIrpFromCancelableQueue(), MiniDoRequest(), MiniportWorker(), MiniRequestComplete(), MiniReset(), MiniTimerDpcFunction(), NdisAcquireReadWriteLock(), NdisDprAcquireSpinLock(), NdisDprAllocatePacket(), NdisDprFreePacket(), NtCancelTimer(), NtSetTimer(), ProtocolReceive(), RxTimerDispatch(), ScsiPortDpcForIsr(), ScsiPortIoTimer(), ScsiPortStartIo(), SpiAllocateSrbStructures(), SpiMiniportTimerDpc(), SpiProcessCompletedRequest(), TcpipAcquireSpinLockAtDpcLevel(), USBPORT_CancelActiveTransferIrp(), USBPORT_CancelPendingTransferIrp(), USBPORT_ClosePipe(), USBPORT_DpcHandler(), USBPORT_EndpointWorker(), USBPORT_FlushCancelList(), USBPORT_FlushPendingTransfers(), USBPORT_GetEndpointState(), USBPORT_IsrDpc(), USBPORT_IsrDpcHandler(), USBPORT_ReopenPipe(), USBPORT_ResetPipe(), USBPORT_RestoreDevice(), USBPORT_WorkerThreadHandler(), USBSTOR_Cancel(), USBSTOR_TimerRoutine(), and VideoPortAcquireSpinLockAtDpcLevel().

◆ KeAcquireSpinLockForDpc()

KIRQL FASTCALL KeAcquireSpinLockForDpc ( IN PKSPIN_LOCK SpinLock )

Definition at line 398 of file spinlock.c.

 {
     UNIMPLEMENTED;
     return 0;
 }

◆ KefAcquireSpinLockAtDpcLevel()

VOID FASTCALL KefAcquireSpinLockAtDpcLevel ( IN PKSPIN_LOCK SpinLock )

Definition at line 237 of file spinlock.c.

 {
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)SpinLock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Do the inlined function */
     KxAcquireSpinLock(SpinLock);
 }

◆ KefReleaseSpinLockFromDpcLevel()

VOID FASTCALL KefReleaseSpinLockFromDpcLevel ( IN PKSPIN_LOCK SpinLock )

Definition at line 259 of file spinlock.c.

 {
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)SpinLock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Do the inlined function */
     KxReleaseSpinLock(SpinLock);
 }

◆ KeReleaseInStackQueuedSpinLockForDpc()

VOID FASTCALL KeReleaseInStackQueuedSpinLockForDpc ( IN PKLOCK_QUEUE_HANDLE LockHandle )

Definition at line 432 of file spinlock.c.

 {
     UNIMPLEMENTED;
 }

◆ KeReleaseInStackQueuedSpinLockFromDpcLevel()

VOID FASTCALL KeReleaseInStackQueuedSpinLockFromDpcLevel ( IN PKLOCK_QUEUE_HANDLE LockHandle )

Definition at line 369 of file spinlock.c.

 {
 #ifdef CONFIG_SMP
 #if 0
     /* Call the internal function */
     KeReleaseQueuedSpinLockFromDpcLevel(LockHandle->LockQueue.Next);
 #else
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)LockHandle->LockQueue.Lock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Release the lock */
     KxReleaseSpinLock(LockHandle->LockQueue.Lock); // HACK
 #endif
 #endif
 }

Referenced by KiReleaseApcLockFromSynchLevel(), KiReleaseDeviceQueueLock(), and KiReleaseProcessLockFromSynchLevel().

◆ KeReleaseInterruptSpinLock()

VOID NTAPI KeReleaseInterruptSpinLock	(	IN PKINTERRUPT	Interrupt,
		IN KIRQL	OldIrql
	)

Definition at line 165 of file spinlock.c.

 {
     /* Release lock on MP */
     KeReleaseSpinLockFromDpcLevel(Interrupt->ActualLock);
 
     /* Lower IRQL */
     KeLowerIrql(OldIrql);
 }

Referenced by i8042DpcRoutineMouseTimeout(), i8042KbdDpcRoutine(), i8042MouDpcRoutine(), i8042PacketDpc(), i8042StartPacket(), InPortDpcForIsr(), KeConnectInterrupt(), KeDisconnectInterrupt(), KiInterruptDispatch2(), Mx::MxReleaseInterruptSpinLock(), PortReleaseSpinLock(), and StartProcedure().

◆ KeReleaseQueuedSpinLockFromDpcLevel()

VOID FASTCALL KeReleaseQueuedSpinLockFromDpcLevel ( IN PKSPIN_LOCK_QUEUE LockHandle )

Definition at line 120 of file spinlock.c.

 {
 #ifdef CONFIG_SMP
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)LockHandle->Lock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Do the inlined function */
     KxReleaseSpinLock(LockHandle->Lock);
 #endif
 }

Referenced by KeReleaseInStackQueuedSpinLockFromDpcLevel().

◆ KeReleaseSpinLockForDpc()

VOID FASTCALL KeReleaseSpinLockForDpc	(	IN PKSPIN_LOCK	SpinLock,
		IN KIRQL	OldIrql
	)

Definition at line 409 of file spinlock.c.

 {
     UNIMPLEMENTED;
 }

◆ KeReleaseSpinLockFromDpcLevel()

VOID NTAPI KeReleaseSpinLockFromDpcLevel ( IN PKSPIN_LOCK SpinLock )

Definition at line 215 of file spinlock.c.

 {
     /* Make sure we are at DPC or above! */
     if (KeGetCurrentIrql() < DISPATCH_LEVEL)
     {
         /* We aren't -- bugcheck */
         KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                      (ULONG_PTR)SpinLock,
                      KeGetCurrentIrql(),
                      0,
                      0);
     }
 
     /* Do the inlined function */
     KxReleaseSpinLock(SpinLock);
 }

Referenced by _Function_class_(), AcpiOsReleaseLock(), CcPerformReadAhead(), CcPurgeCacheSection(), CcRosCreateVacb(), CcRosDeleteFileCache(), CcRosFreeUnusedVacb(), CcRosInitializeFileCache(), CcRosLookupVacb(), CcRosMarkDirtyVacb(), CcRosReleaseFileCache(), CcRosTraceCacheMap(), CcRosTrimCache(), CcRosUnmarkDirtyVacb(), ClasspReleaseQueue(), EthFilterDprIndicateReceiveComplete(), ExpTimerApcKernelRoutine(), ExTimerRundown(), CPortPinWaveCyclic::GeneratePositionEvents(), InterfacePciDevicePresent(), InterfacePciDevicePresentEx(), IntVideoPortResetDisplayParametersEx(), IServiceGroupDpc(), KeIpiGenericCall(), KeReleaseInterruptSpinLock(), KeStartProfile(), KeStopProfile(), KeSynchronizeExecution(), KiRetireDpcList(), KsMoveIrpsOnCancelableQueue(), KsRemoveIrpFromCancelableQueue(), MiniDoRequest(), MiniportWorker(), MiniRequestComplete(), MiniReset(), MiniTimerDpcFunction(), NdisAcquireReadWriteLock(), NdisDprAllocatePacket(), NdisDprFreePacket(), NdisDprReleaseSpinLock(), NtCancelTimer(), NtSetTimer(), ProtocolReceive(), RxTimerDispatch(), ScsiPortDpcForIsr(), ScsiPortIoTimer(), ScsiPortStartIo(), SpiAllocateSrbStructures(), SpiGetNextRequestFromLun(), SpiMiniportTimerDpc(), SpiProcessCompletedRequest(), TcpipReleaseSpinLockFromDpcLevel(), USBPORT_CancelActiveTransferIrp(), USBPORT_CancelPendingTransferIrp(), USBPORT_ClosePipe(), USBPORT_DpcHandler(), USBPORT_EndpointWorker(), USBPORT_FlushCancelList(), USBPORT_FlushPendingTransfers(), USBPORT_GetEndpointState(), USBPORT_IsrDpc(), USBPORT_IsrDpcHandler(), USBPORT_ReopenPipe(), USBPORT_ResetPipe(), USBPORT_RestoreDevice(), USBPORT_WorkerThreadHandler(), USBSTOR_Cancel(), USBSTOR_TimerRoutine(), and VideoPortReleaseSpinLockFromDpcLevel().

◆ KeTestSpinLock()

BOOLEAN FASTCALL KeTestSpinLock ( IN PKSPIN_LOCK SpinLock )

Definition at line 442 of file spinlock.c.

 {
     /* Test this spinlock */
     if (*SpinLock)
     {
         /* Spinlock is busy, yield execution */
         YieldProcessor();
 
         /* Return busy flag */
         return FALSE;
     }
 
     /* Spinlock appears to be free */
     return TRUE;
 }

Referenced by InbvAcquireLock(), IntVideoPortResetDisplayParametersEx(), and KdpAcquireLock().

◆ KeTryToAcquireSpinLockAtDpcLevel()

BOOLEAN FASTCALL KeTryToAcquireSpinLockAtDpcLevel ( IN OUT PKSPIN_LOCK SpinLock )

Definition at line 303 of file spinlock.c.

 {
 #ifdef CONFIG_SMP
     /* Check if it's already acquired */
     if (!(*SpinLock))
     {
         /* Try to acquire it */
         if (InterlockedBitTestAndSet((PLONG)SpinLock, 0))
         {
             /* Someone else acquired it */
             return FALSE;
         }
     }
     else
     {
         /* It was already acquired */
         return FALSE;
     }
 
 #if DBG
     /* On debug builds, we OR in the KTHREAD */
     *SpinLock = (ULONG_PTR)KeGetCurrentThread() | 1;
 #endif
 #endif
 
     /* All is well, return TRUE */
     return TRUE;
 }

Referenced by KdEnterDebugger(), KdpAcquireLock(), and KdPollBreakIn().

◆ KiAcquireSpinLock()

VOID FASTCALL KiAcquireSpinLock ( IN PKSPIN_LOCK SpinLock )

Definition at line 281 of file spinlock.c.

 {
     /* Do the inlined function */
     KxAcquireSpinLock(SpinLock);
 }

◆ KiReleaseSpinLock()

VOID FASTCALL KiReleaseSpinLock ( IN PKSPIN_LOCK SpinLock )

Definition at line 292 of file spinlock.c.

 {
     /* Do the inlined function */
     KxReleaseSpinLock(SpinLock);
 }

Macros

Functions