Guardian Programming Reference Summary for C

Functions Summary (A-C)
Guardian Programming Reference Summary for C—522630-001
4-11
CANCELREQ
Cancels an incomplete operation on a file opened for nowait I/O.
CANCELTIMEOUT
Cancels a timer initiated by SIGNALTIMEOUT.
CHANGELIST
Controls polling when the application program acts as a supervisor or tributary station in
a centralized multipoint configuration.
#include <cextdecs(CANCELREQ)>
_cc_status CANCELREQ ( short filenum /* i */
,[ long tag ] );/* i */
_status_lt (<return_value>) An error occurred (call FILEINFO).
_status_eq (<return_value>) The operation was canceled.
#include <cextdecs(CANCELTIMEOUT)>
_cc_status CANCELTIMEOUT ( short tag ); /* i */
_status_eq (<return_value>) CANCELTIMEOUT finished successfully.
_status_gt (<return_value>) The value of tag was invalid.
#include <cextdecs(CHANGELIST)>
_cc_status CHANGELIST ( short filenum
,short function /* i */
,short parameter );/* i */
_status_lt (<return_value>) An error occurred (call FILEINFO).
_status_eq (<return_value>) The CHANGELIST procedure executed
successfully.