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- Cleanup RepairList, KiMoveApcState.

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- Fixup comments for KeAreApcsDisabled.
- Implement and add comment header to KeAreAllApcsDisabled.

svn path=/trunk/; revision=24052
This commit is contained in:
Alex Ionescu 2006-09-11 01:30:24 +00:00
parent 2fea34f0e1
commit 4b35027c0f
1 changed files with 63 additions and 31 deletions
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94
reactos/ntoskrnl/ke/apc.c
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@ -472,27 +472,30 @@ Quickie:
return; return;
} }
static __inline FORCEINLINE
VOID RepairList(PLIST_ENTRY Original, VOID
PLIST_ENTRY Copy, RepairList(IN PLIST_ENTRY Original,
KPROCESSOR_MODE Mode) IN PLIST_ENTRY Copy,
IN KPROCESSOR_MODE Mode)
{ {
/* Copy Source to Desination */ /* Check if the list for this mode is empty */
if (IsListEmpty(&Original[(int)Mode])) { if (IsListEmpty(&Original[Mode]))
{
InitializeListHead(&Copy[(int)Mode]); /* It is, all we need to do is initialize it */
InitializeListHead(&Copy[Mode]);
} else { }
else
Copy[(int)Mode].Flink = Original[(int)Mode].Flink; {
Copy[(int)Mode].Blink = Original[(int)Mode].Blink; /* Copy the lists */
Original[(int)Mode].Flink->Blink = &Copy[(int)Mode]; Copy[Mode].Flink = Original[Mode].Flink;
Original[(int)Mode].Blink->Flink = &Copy[(int)Mode]; Copy[Mode].Blink = Original[Mode].Blink;
Original[Mode].Flink->Blink = &Copy[Mode];
Original[Mode].Blink->Flink = &Copy[Mode];
} }
} }
VOID VOID
STDCALL NTAPI
KiMoveApcState(PKAPC_STATE OldState, KiMoveApcState(PKAPC_STATE OldState,
PKAPC_STATE NewState) PKAPC_STATE NewState)
{ {
@ -832,33 +835,62 @@ KeRemoveQueueApc(PKAPC Apc)
} }
/*++ /*++
* KeAreApcsDisabled * @name KeAreApcsDisabled
* @implemented NT4 * @implemented NT4
* *
* Prepares the Context for a User-Mode APC called through NTDLL.DLL * The KeAreApcsDisabled routine returns whether kernel APC delivery is
* disabled for the current thread.
* *
* Params: * @param None.
* None.
* *
* Returns: * @return KeAreApcsDisabled returns TRUE if the thread is within a critical
* KeAreApcsDisabled returns TRUE if the thread is within a critical region * region or a guarded region, and FALSE otherwise.
* or a guarded region, and FALSE otherwise.
* *
* Remarks: * @remarks A thread running at IRQL = PASSIVE_LEVEL can use KeAreApcsDisabled
* A thread running at IRQL = PASSIVE_LEVEL can use KeAreApcsDisabled to * determine if normal kernel APCs are disabled.
* determine if normal kernel APCs are disabled. A thread that is inside a
* critical region has both user APCs and normal kernel APCs disabled, but
* not special kernel APCs. A thread that is inside a guarded region has
* all APCs disabled, including special kernel APCs.
* *
* Callers of this routine must be running at IRQL <= APC_LEVEL. * A thread that is inside critical region has both user APCs and
* normal kernel APCs disabled, but not special kernel APCs.
*
* A thread that is inside a guarded region has all APCs disabled,
* including special kernel APCs.
*
* Callers of this routine must be running at IRQL <= DISPATCH_LEVEL.
* *
*--*/ *--*/
BOOLEAN BOOLEAN
STDCALL NTAPI
KeAreApcsDisabled(VOID) KeAreApcsDisabled(VOID)
{ {
/* Return the Kernel APC State */ /* Return the Kernel APC State */
return KeGetCurrentThread()->CombinedApcDisable ? TRUE : FALSE; return KeGetCurrentThread()->CombinedApcDisable ? TRUE : FALSE;
} }
/*++
* @name KeAreAllApcsDisabled
* @implemented NT5.1
*
* The KeAreAllApcsDisabled routine returns whether the calling thread is
* inside a guarded region or running at IRQL = APC_LEVEL, which disables
* all APC delivery.
*
* @param None.
*
* @return KeAreAllApcsDisabled returns TRUE if the thread is within a guarded
* guarded region or running at IRQL >= APC_LEVEL, and FALSE otherwise.
*
* @remarks A thread running at IRQL = PASSIVE_LEVEL can use this routine to
* determine if all APCs delivery is disabled.
*
* Callers of this routine must be running at IRQL <= DISPATCH_LEVEL.
*
*--*/
BOOLEAN
NTAPI
KeAreAllApcsDisabled(VOID)
{
/* Return the Special APC State */
return ((KeGetCurrentThread()->SpecialApcDisable) ||
(KeGetCurrentIrql() >= APC_LEVEL)) ? TRUE : FALSE;
}