Open System Services System Calls Reference Manual (G06.29+, H06.08+, J06.03+)

System Functions (s and S) spt_select(2)
• Compile the application using the _SPT_MODEL_ feature test macro or equivalent
compiler command option in addition to any other feature test macros in use.
• Link the application to the zsptdll library (/G/system/zdllnnn/zsptdll).
To use a combination of the spt_select() and the spt_select_single_np() functions in a single
source file, you must explicitly call these functions.
RETURN VALUES
See the select(2) reference page. The following information also applies:
• If the file descriptor becomes invalid (is closed by another thread), -1 is returned with an
errno of [EBADF].
• If a signal is received via the pthread_kill() function and is not blocked, ignored, or
handled, -1 is returned with an errno value of [EINTR].
RELATED INFORMATION
Functions: select(2), spt_select_single_np(2).
STANDARDS CONFORMANCE
This function is an extension to the XPG4 Version 2 specification. Interfaces documented on this
reference page conform to the following industry standards:
• IEEE Std 1003.1c-1995, POSIX System Application Program Interface
The use of the header file spthread.h is an HP exception to the POSIX standard.
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