diff options
Diffstat (limited to 'manual/examples/sigh1.c')
| -rw-r--r-- | manual/examples/sigh1.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/manual/examples/sigh1.c b/manual/examples/sigh1.c index 2c6e95b9c9..d05afd9af9 100644 --- a/manual/examples/sigh1.c +++ b/manual/examples/sigh1.c @@ -1,3 +1,20 @@ +/* Signal Handlers that Return + Copyright (C) 1991-2012 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, if not, see <http://www.gnu.org/licenses/>. +*/ + #include <signal.h> #include <stdio.h> #include <stdlib.h> @@ -6,14 +23,14 @@ volatile sig_atomic_t keep_going = 1; /* The signal handler just clears the flag and re-enables itself. */ -void +void catch_alarm (int sig) { keep_going = 0; signal (sig, catch_alarm); } -void +void do_stuff (void) { puts ("Doing stuff while waiting for alarm...."); |