pfm_inhibit.3ncs

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\"	@(#)pfm_inhibit.3ncs	8.1 of 9/11/90
.TH pfm_inhibit 3ncs
.SH Name
pfm_inhibit \- inhibit asynchronous faults
.SH Syntax
.nf
#include <idl/c/base.h>
#include <idl/c/pfm.h>

void pfm_$inhibit()
.fi
.\".SH SYNOPSIS (PASCAL)
.\".DS
.\"\fB%include '/sys/ins/base.ins.pas';\fR
.\"\fB%include '/sys/ins/pfm.ins.pas';\fR
.\"
.\"\fBprocedure pfm_$inhibit;\fR
.\".DE
.ig
.SH Synopsis (fortran)
.nf
\fB%include '/sys/ins/base.ins.ftn'\fR
\fB%include '/sys/ins/pfm.ins.ftn'\fR

	 \fBcall pfm_$inhibit\fR
.fi
..
.SH Description
The 
.PN pfm_$inhibit
routine prevents asynchronous faults
from being passed to the calling process.
While faults are inhibited,
the operating system holds
at most one asynchronous fault.
Consequently,
a call to 
.PN pfm_$inhibit
can result in the loss of some signals.
It is good practice to inhibit faults
only when absolutely necessary.
.NXR "Fault Management" "pfm_inhibit"
.NT
This routine has no effect on the processing of synchronous faults such
as floating-point and overflow exceptions, access violations, and so on.
.NE
.SH Files
.PN /usr/include/idl/c/base.h
.br
.PN /usr/include/idl/base.idl
.br
.PN /usr/include/idl/c/pfm.h
.SH See Also
intro(3ncs), pfm_enable(3ncs), pfm_inhibit_fault(3ncs)