NAME

sigpending − get pending signals

SYNOPSIS

#include <signal.h> int
sigpending(set)
sigset_t ∗set;

DESCRIPTION

The sigpending function returns a mask of the signals pending for delivery to the calling process in the location indicated by set. Signals may be pending because they are currently masked, or transiently before delivery (although the latter case is not normally detectable).

RETURN VALUES

A 0 value indicated that the call succeeded.  A −1 return value indicates an error occurred and errno is set to indicated the reason. 

ERRORS

If sigpending fails then errno will contain one of the following:

[EFAULT] set contains an invalid address. 

SEE ALSO

sigaction(2), sigprocmask(2)

STANDARDS

The sigpending function is defined by IEEE Std1003.1-1988 (“POSIX”). 

4.4 Berkeley Distribution  —  September 3, 1997