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NAMEsigpending, rt_sigpending - examine pending signals
int sigpending(sigset_t *set);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sigpending() returns the set of signals that are pending for delivery to the calling thread (i.e., the signals which have been raised while blocked). The mask of pending signals is returned in set.
RETURN VALUEsigpending() returns 0 on success and -1 on error. In the event of an error, errno is set to indicate the cause.
- set points to memory which is not a valid part of the process address space.
CONFORMING TOPOSIX.1-2001, POSIX.1-2008.
NOTESSee sigsetops(3) for details on manipulating signal sets.
If a signal is both blocked and has a disposition of "ignored", it is not added to the mask of pending signals when generated.
The set of signals that is pending for a thread is the union of the set of signals that is pending for that thread and the set of signals that is pending for the process as a whole; see signal(7).