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<concept id="GUID-3A785F02-F4AA-432C-9331-8827029BB384" xml:lang="en"><title>Status

Query</title><shortdesc>This document describes how the status of an asynchronous request

is maintained and monitored.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>A <xref href="GUID-E0B34F3E-D4C4-3232-B8B1-7DB35B454646.dita"><apiname>TRequestStatus</apiname></xref> object is used to monitor the status

and result of the asynchronous request. This object maintains the status of

the request at various stages and finally contains the request result. The

driver uses the status object when performing operations on the request such

as cancelling, completing, or managing multiple similar requests. </p>

<p>Initially, when the request is made, the Kernel changes the status to <xref href="GUID-B0778F54-C5DD-3307-A1E2-0DD339C4E4E7.dita"><apiname>KRequestPending</apiname></xref>.

After completion of the request, the status is changed to <xref href="GUID-6AB86DE7-83FE-35AE-9528-AF9B3247E2D5.dita"><apiname>KRequestComplete</apiname></xref> to

indicate request completion. It also contains the result of the request, which

can indicate an error or failure of the request. <xref href="GUID-E0B34F3E-D4C4-3232-B8B1-7DB35B454646.dita#GUID-E0B34F3E-D4C4-3232-B8B1-7DB35B454646/GUID-43246976-3D7B-3B25-9C32-42E02E9ED674"><apiname>TRequestStatus::Int()</apiname></xref> returns

the request result. </p>