ADIC Digital Camera 601355 Rev A 사용자 설명서

601355 Rev A

API Functions

2-505

VSCMD_Cancel

 stops a pending request from executing or 

aborts an executing Audit request.

Upon receipt of a Cancel request, VolServ returns final status to 
the client that requested the cancellation. If the specified request 
is capable of being cancelled, a good status is returned. 
Otherwise, a status that indicates why the request cannot be 
cancelled is returned.

If the specified request is pending execution, the request is 
directed to terminate after any allocated resources are released. 
A final status that indicates “failure due to cancellation” is sent 
to the original issuer of the cancelled request.

Upon receipt of a Cancel request of an executing Audit request, 
the processing is directed to abort, and the remainder of the 
Audit request is cancelled. A final status that indicates “failure 
due to cancellation” is sent to the original issuer of the 
cancelled request.

To issue a valid Cancel request, the client must supply the 
request identifier and request type of the request to be canceled. 
The 

VSCMD_Cancel

 function can either take these parameters 

separately or retrieve them from a command handle.

VST_BOOLEAN VSCMD_Cancel 
(VST_COMMAND_HANDLE handle,
“…”,
VSID_ENDFIELD)