sigpending.2

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 2 代码 · 共 44 行

.\" SCCSID: @(#)sigpending.2	2.3	8/10/87
.TH sigpending 2
.SH Name
sigpending \- examine pending signals
.SH Syntax
.nf
.B #include <signal.h>
.PP
.B sigpending(\fIset\fP)
.B sigset_t *\fIset\fP;
.SH Description
.NXR "sigpending system call"
.NXR "signal" 
The
.PN sigpending
system call
stores the set of signals that is blocked from delivery and pending for
the calling process in the space pointed to by the argument
.I set.
.PP
The
.I set
argument is manipulated by using the 
.MS sigsetops 3
functions.
.SH Return Values
A zero (0) return value indicates that the call succeeded.  A \-1 return value
indicates an error occurred, and
.I errno
is set to indicate the reason.
.SH Diagnostics
.NXR "sigpending system call" "diagnostics"
The
.PN sigpending
system call fails if the following occurs:
.TP 15
[EFAULT]
The
.I set
argument points to memory that is not a valid part of the process
address space.
.SH See Also
 sigprocmask(3), sigsetops(3)