gimp/libgimpbase/gimpsignal.h

63 lines
2.1 KiB
C

/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-2000 Peter Mattis and Spencer Kimball
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GIMP_SIGNAL_H__
#define __GIMP_SIGNAL_H__
#include <signal.h>
G_BEGIN_DECLS
/* For information look into the C source or the html documentation */
/* A gimp-level interface to a Posix.1-compliant signal package lives here
* For 1.2, this gimp-level interface mostly passes through to posix calls
* without modification. Certain calls manipulate struct sigaction in
* ways useful to Gimp.
*/
#ifdef __EMX__
/* hope this is right for OS/2 */
#define SA_RESTART SA_SYSV
#endif
/* GimpSignalHandlerFunc is a reference to a (signal handler) function
* that takes a signal ID and returns void.
* signal(2) returns such references; so does gimp_signal_private.
*/
typedef void (* GimpSignalHandlerFunc) (gint signum);
/* Internal implementation that can be DEFINEd into various flavors of
* signal(2) lookalikes.
*/
GimpSignalHandlerFunc gimp_signal_private (gint signum,
GimpSignalHandlerFunc handler,
gint flags);
/* the gimp_signal_syscallrestart() lookalike looks like signal(2) but
* quietly requests the restarting of system calls. Addresses #2742
*/
#define gimp_signal_syscallrestart(signum,handler) gimp_signal_private ((signum), (handler), SA_RESTART)
G_END_DECLS
#endif /* __GIMP_SIGNAL_H__ */