38.9.4.30 Start Queuing Device Write Request
Queuing device read request until ExecuteQueuingAccess() is
called .
Queuing is performed in a unit of WinGP SDK handle.
Function Name
INT WINAPI
BeginQueuingWrite();
Argument
None
Return value (NULL)
Normal End: 0
Problem: Error code
Special Item
-
Do not call API to execute device write
operations after calling BeginQueuingWrite() until the
ExecuteQueuingAccess(). After these calling, cache write and direct
write commands will be queued. However, cache write and direct
write commands cannot be mixed.
-
To cancel a queuing command, call
CancelQueuingAccess().
-
The maximum number of queuing commands is 1500,
the maximum byte number is under 1 MB.
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