sigpending.2

早期freebsd实现

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.\"	@(#)sigpending.2	8.3 (Berkeley) 1/12/94
.\"
.Dd January 12, 1994
.Dt SIGPENDING 2
.Os
.Sh NAME
.Nm sigpending
.Nd get pending signals
.Sh SYNOPSIS
.Fd #include <signal.h>
.Ft int
.Fn sigpending "sigset_t *set"
.Sh DESCRIPTION
The
.Nm sigpending
function returns a mask of the signals pending for delivery
to the calling process in the location indicated by
.Fa set .
Signals may be pending because they are currently masked,
or transiently before delivery (although the latter case is not
normally detectable).
.Sh RETURN VALUES
A 0 value indicated that the call succeeded.  A \-1 return value
indicates an error occurred and
.Va errno
is set to indicated the reason.
.Sh ERRORS
The
.Nm sigpending
function does not currently detect any errors.
.Sh SEE ALSO
.Xr sigaction 2 ,
.Xr sigprocmask 2
.Sh STANDARDS
The
.Nm sigpending
function is defined by
.St -p1003.1-88 .