The FltDeleteTransactionContext routine removes a context from a given transaction and marks the context for deletion.
NTSTATUS FltDeleteTransactionContext( _In_ PFLT_INSTANCE Instance, _In_ PKTRANSACTION Transaction, _Out_opt_ PFLT_CONTEXT *OldContext );
- Instance [in]
Opaque instance pointer for the caller.
- Transaction [in]
Opaque transaction pointer for the transaction whose context is being deleted.
- OldContext [out, optional]
Pointer to a caller-allocated variable that receives the address of the deleted context. This parameter is optional and can be NULL. If OldContext is not NULL and does not point to NULL_CONTEXT, the caller is responsible for calling FltReleaseContext to release this context when it is no longer needed.
FltDeleteTransactionContext returns STATUS_SUCCESS or an appropriate NTSTATUS value such as the following:
No matching context was found. This is an error code.
This routine is available on Windows Vista and later.
Because contexts are reference-counted, it is not usually necessary for a minifilter driver to call a routine such as FltDeleteTransactionContext to explicitly delete a context.
A minifilter driver calls FltDeleteTransactionContext to remove a context from a transaction and mark the context for deletion. The context is usually freed immediately unless there is an outstanding reference on it (for example, because the context is still being used by another thread).
To allocate a new transaction context, call FltAllocateContext.
To retrieve a transaction context, call FltGetTransactionContext.
To set a transaction context, call FltSetTransactionContext.