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ctThrdQueueCount
Returns the number of entries in a queue.
Short Name
ctThrdQueueCount()
Type
Threading function
Declaration
LONG ctThrdQueueCount(NINT qid)
Description
Returns the number of entries in the queue qid. If an error occurs, ctThrdQueueCount() returns a negative value corresponding to the error code negated.
Return
See Description.
Value |
Symbolic Constant |
Explanation |
|---|---|---|
0 |
NO_ERROR |
Successful function. |
90 |
NQUE_ERR |
Invalid qid. |
514 |
CQUE_ERR |
Queue could not be closed. |
See FairCom DB Error Codes for a complete listing of valid FairCom DB error values.
Limitations
Can only be used with a ctThrd library.
See also
ctThrdQueueClose, ctThrdQueueOpen, ctThrdLIFOWrite, ctThrdQueueMlen, ctThrdQueueRead, ctThrdQueueWrite
