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ctThrdSemapTry
Try once to get one unit of a semaphore.
Short Name
ctThrdSemapTry()
Type
Threading function
Declaration
NINT ctThrdSemapTry(pctSEMAP semap)
Description
Same as ctThrdSemapGet() except that if no unit of the semaphore is available, ctThrdSemapTry() returns NTIM_ERR (156).
Return
Value |
Symbolic Constant |
Explanation |
|---|---|---|
0 |
NO_ERROR |
Successful function. |
90 |
NQUE_ERR |
Invalid qid. |
156 |
NTIM_ERR |
block in use by another thread. Timeout error. |
514 |
CQUE_ERR |
Queue could not be closed. |
636 |
TSYF_ERR |
block get failed. |
638 |
TQUE_ERR |
Queue message truncated to fit. |
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
ctThrdSemapCls, ctThrdSemapGet, ctThrdSemapIni, ctThrdSemapRel
