ULONG
NTAPI
ExInterlockedAddUlong(
IN OUT PULONG Addend,
IN ULONG Increment,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
ULONG OldValue;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Save the old value */
OldValue = *Addend;
/* Do the operation */
*Addend += Increment;
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* Return the old value */
return OldValue;
}
PSINGLE_LIST_ENTRY
FASTCALL
ExfInterlockedPushEntryList(
IN OUT PSINGLE_LIST_ENTRY ListHead,
IN PSINGLE_LIST_ENTRY ListEntry,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
PSINGLE_LIST_ENTRY OldListEntry;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Save the old top entry */
OldListEntry = ListHead->Next;
/* Push a new entry on the list */
PushEntryList(ListHead, ListEntry);
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* return the entry */
return OldListEntry;
}
LARGE_INTEGER
NTAPI
ExInterlockedAddLargeInteger(
IN OUT PLARGE_INTEGER Addend,
IN LARGE_INTEGER Increment,
IN OUT PKSPIN_LOCK Lock)
{
LARGE_INTEGER OldValue;
BOOLEAN Enable;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Save the old value */
OldValue.QuadPart = Addend->QuadPart;
/* Do the operation */
Addend->QuadPart += Increment.QuadPart;
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* Return the old value */
return OldValue;
}
PSINGLE_LIST_ENTRY
FASTCALL
ExfInterlockedPopEntryList(
IN OUT PSINGLE_LIST_ENTRY ListHead,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
PSINGLE_LIST_ENTRY ListEntry;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Pop the first entry from the list */
ListEntry = PopEntryList(ListHead);
#if DBG
if (ListEntry)
ListEntry->Next = (PSINGLE_LIST_ENTRY)0xBADDD0FF;
#endif
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* return the entry */
return ListEntry;
}
PLIST_ENTRY
FASTCALL
ExfInterlockedRemoveHeadList(
IN OUT PLIST_ENTRY ListHead,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
PLIST_ENTRY ListEntry;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Check if the list is empty */
if (IsListEmpty(ListHead))
{
/* Return NULL */
ListEntry = NULL;
}
else
{
/* Remove the first entry from the list head */
ListEntry = RemoveHeadList(ListHead);
#if DBG
ListEntry->Flink = (PLIST_ENTRY)0x0BADD0FF;
ListEntry->Blink = (PLIST_ENTRY)0x0BADD0FF;
#endif
}
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* return the entry */
return ListEntry;
}
PLIST_ENTRY
FASTCALL
ExfInterlockedInsertTailList(
IN OUT PLIST_ENTRY ListHead,
IN PLIST_ENTRY ListEntry,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
PLIST_ENTRY LastEntry;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Save the last entry */
LastEntry = ListHead->Blink;
/* Insert the new entry */
InsertTailList(ListHead, ListEntry);
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* Return the old last entry or NULL for empty list */
return (LastEntry == ListHead) ? NULL : LastEntry;
}
PLIST_ENTRY
NTAPI
ExInterlockedInsertHeadList(
IN OUT PLIST_ENTRY ListHead,
IN OUT PLIST_ENTRY ListEntry,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
PLIST_ENTRY FirstEntry;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Save the first entry */
FirstEntry = ListHead->Flink;
/* Insert the new entry */
InsertHeadList(ListHead, ListEntry);
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* Return the old first entry or NULL for empty list */
return (FirstEntry == ListHead) ? NULL : FirstEntry;
}
PSINGLE_LIST_ENTRY
NTAPI
ExInterlockedPopEntryList(
IN OUT PSINGLE_LIST_ENTRY ListHead,
IN OUT PKSPIN_LOCK Lock)
{
BOOLEAN Enable;
PSINGLE_LIST_ENTRY ListEntry;
/* Disable interrupts and acquire the spinlock */
Enable = _ExiDisableInteruptsAndAcquireSpinlock(Lock);
/* Pop the first entry from the list */
ListEntry = PopEntryList(ListHead);
/* Release the spinlock and restore interrupts */
_ExiReleaseSpinLockAndRestoreInterupts(Lock, Enable);
/* Return the entry */
return ListEntry;
}
