sigpending(2) sigpending(2)
NAME [Toc] [Back]
sigpending - examine pending signals
SYNOPSIS [Toc] [Back]
#include <signal.h>
int sigpending(sigset_t *set);
DESCRIPTION [Toc] [Back]
sigpending() stores the set of signals that are blocked from delivery
and are pending to the calling thread, at the location pointed to by
set.
RETURN VALUE [Toc] [Back]
Upon successful completion, sigpending() returns 0. Otherwise -1 is
returned and errno is set to indicate the error.
ERRORS [Toc] [Back]
sigpending() fails if the following condition is encountered:
[EFAULT] set points to an invalid address. The reliable
detection of this error is implementation-dependent.
APPLICATION USAGE [Toc] [Back]
Threads Considerations
The set of signals returned by sigpending() is the union of the
signals pending on the process and calling thread. A signal may be
pending on the process if all threads block the signal.
The set of signals returned by sigpending() is only advisory. Since
other threads may be executing at the time of the call, a signal
pending on the process may be delivered to a thread after this system
call returns.
For more information regarding signals and threads, refer to
signal(5).
LWP (Lightweight Processes) Considerations [Toc] [Back]
The set of signals returned by sigpending() is the union of the
signals pending on the process and calling LWP.
AUTHOR [Toc] [Back]
sigpending() was derived from the IEEE POSIX 1003.1-1988 Standard.
SEE ALSO [Toc] [Back]
sigaction(2), sigsuspend(2), sigprocmask(2), sigsetops(3C), signal(5).
CHANGE HISTORY [Toc] [Back]
First release in Issue 3.
Hewlett-Packard Company - 1 - HP-UX 11i Version 2: August 2003
sigpending(2) sigpending(2)
STANDARDS CONFORMANCE [Toc] [Back]
sigpending() : AES, SVID3, XPG3, XPG4, FIPS 151-2, POSIX.1
Hewlett-Packard Company - 2 - HP-UX 11i Version 2: August 2003 [ Back ] |
