code.delx.au - pulseaudio/blob - src/pulse/mainloop-signal.h

   1 #ifndef foomainloopsignalhfoo
   2 #define foomainloopsignalhfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2004-2006 Lennart Poettering
  10   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
  11
  12   PulseAudio is free software; you can redistribute it and/or modify
  13   it under the terms of the GNU Lesser General Public License as published
  14   by the Free Software Foundation; either version 2 of the License,
  15   or (at your option) any later version.
  16
  17   PulseAudio is distributed in the hope that it will be useful, but
  18   WITHOUT ANY WARRANTY; without even the implied warranty of
  19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20   General Public License for more details.
  21
  22   You should have received a copy of the GNU Lesser General Public License
  23   along with PulseAudio; if not, write to the Free Software
  24   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  25   USA.
  26 ***/
  27
  28 #include <pulse/mainloop-api.h>
  29 #include <pulse/cdecl.h>
  30
  31 PA_C_DECL_BEGIN
  32
  33 /** \file
  34  * UNIX signal support for main loops. In contrast to other
  35  * main loop event sources such as timer and IO events, UNIX signal
  36  * support requires modification of the global process
  37  * environment. Due to this the generic main loop abstraction layer as
  38  * defined in \ref mainloop-api.h doesn't have direct support for UNIX
  39  * signals. However, you may hook signal support into an abstract main loop via the routines defined herein.
  40  */
  41
  42 /** Initialize the UNIX signal subsystem and bind it to the specified main loop */
  43 int pa_signal_init(pa_mainloop_api *api);
  44
  45 /** Cleanup the signal subsystem */
  46 void pa_signal_done(void);
  47
  48 /** An opaque UNIX signal event source object */
  49 typedef struct pa_signal_event pa_signal_event;
  50
  51 /** Create a new UNIX signal event source object */
  52 pa_signal_event* pa_signal_new(int sig, void (*callback) (pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata), void *userdata);
  53
  54 /** Free a UNIX signal event source object */
  55 void pa_signal_free(pa_signal_event *e);
  56
  57 /** Set a function that is called when the signal event source is destroyed. Use this to free the userdata argument if required */
  58 void pa_signal_set_destroy(pa_signal_event *e, void (*callback) (pa_mainloop_api *api, pa_signal_event*e, void *userdata));
  59
  60 PA_C_DECL_END
  61
  62 #endif