psignal.3

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3 代码 · 共 41 行

.\" SCCSID: @(#)psignal.3	8.2	1/28/91
.TH psignal 3
.SH Name
psignal, sys_siglist \- system signal messages
.SH Syntax
.nf
.B void psignal(sig, s)
.B unsigned sig;
.B char *s;
.PP
.B char *sys_siglist[];
.fi
.SH Description
The
.NXR "psignal subroutine"
.NXR "sys_siglist subroutine"
.NXR "signal message" "getting"
.PN psignal
subroutine produces a short message
on the standard error file
describing the indicated signal.
First the argument string
.I s
is printed, then a colon, then the name of the signal
and a new-line.
Most usefully, the argument string is the name
of the program which incurred the signal.
The signal number should be from among those found
in <signal.h>.
.PP
To simplify variant formatting
of signal names, the vector of message strings
.PN sys_siglist
is provided.
The signal number
can be used as an index in this table to get the
signal name without the newline.
The define NSIG defined in <signal.h> is the number of messages.
.SH See Also
sigvec(2), perror(3)