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

System Functions (s and S) spt_sigwait(2)
erated asynchronously.
RETURN VALUES
On a successful call, the signal number is returned. Otherwise the error [EINVAL] is returned.
ERRORS
If the only signals passed are unsupported signals, the spt_sigwait() function returns the error
[EINVAL]. For some signals, support by the spt_sigwait() function depends on the RVU run-
ning on the system:
• The SIGUNCP signal is supported on systems running H-series RVUs only.
• For H06.06 and later H-series RVUs, and G06.29 and later G-series RVUs only, these
signals are supported:
— SIGCONT
— SIGTTIN
— SIGTTOU
—SIGCHLD
— SIGTSTP
RELATED INFORMATION
Functions: pause(2), pthread_cancel(2), pthread_sigmask(2), sigpending(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 HP implementation does not provide the spt_sigwaitinfo() or sigtimedwait() functions.
The use of the header file spthread.h is an HP exception to the POSIX standard.
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