talexander
/
freebsd_amp_hwpstate
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add some comments to explain what's going on here

This commit is contained in:
Brian Somers 2001-08-20 10:25:23 +00:00
parent a0b13740e8
commit 428217f76c
1 changed files with 21 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
usr.sbin/ppp/sig.c
View File

@ -1,5 +1,5 @@
/*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
* Copyright (c) 1997 - 1999, 2001 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -38,8 +38,14 @@ static int necessary; /* Anything set ? */
static sig_type handler[NSIG]; /* all start at SIG_DFL */
/* Record a signal in the "caused" array */
/*
* Record a signal in the "caused" array
*
* This function is the only thing actually called in signal context. It
* records that a signal has been caused and that sig_Handle() should be
* called (in non-signal context) as soon as possible to process that
* signal.
*/
static void
signal_recorder(int sig)
{
@ -49,10 +55,11 @@ signal_recorder(int sig)
/*
* Set up signal_recorder, and record handler as the function to ultimately
* call in handle_signal()
*/
* Set up signal_recorder to handle the given sig and record ``fn'' as
* the function to ultimately call in sig_Handle(). ``fn'' will not be
* called in signal context (as sig_Handle() is not called in signal
* context).
*/
sig_type
sig_signal(int sig, sig_type fn)
{
@ -77,8 +84,13 @@ sig_signal(int sig, sig_type fn)
}
/* Call the handlers for any pending signals */
/*
* Call the handlers for any pending signals
*
* This function is called from a non-signal context - in fact, it's
* called every time select() in DoLoop() returns - just in case
* select() returned due to a signal being recorded by signal_recorder().
*/
int
sig_Handle()
{