1 #ifndef foomainloopsignalhfoo 2 #define foomainloopsignalhfoo 3 4 /*** 5 This file is part of PulseAudio. 6 7 Copyright 2004-2008 Lennart Poettering 8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB 9 10 PulseAudio is free software; you can redistribute it and/or modify 11 it under the terms of the GNU Lesser General Public License as published 12 by the Free Software Foundation; either version 2.1 of the License, 13 or (at your option) any later version. 14 15 PulseAudio is distributed in the hope that it will be useful, but 16 WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 General Public License for more details. 19 20 You should have received a copy of the GNU Lesser General Public License 21 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. 22 ***/ 23 24 #include <pulse/mainloop-api.h> 25 #include <pulse/cdecl.h> 26 27 PA_C_DECL_BEGIN 28 29 /** \file 30 * UNIX signal support for main loops. In contrast to other 31 * main loop event sources such as timer and IO events, UNIX signal 32 * support requires modification of the global process 33 * environment. Due to this the generic main loop abstraction layer as 34 * defined in \ref mainloop-api.h doesn't have direct support for UNIX 35 * signals. However, you may hook signal support into an abstract main loop via the routines defined herein. 36 */ 37 38 /** An opaque UNIX signal event source object */ 39 typedef struct pa_signal_event pa_signal_event; 40 41 /** Callback prototype for signal events */ 42 typedef void (*pa_signal_cb_t) (pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata); 43 44 /** Destroy callback prototype for signal events */ 45 typedef void (*pa_signal_destroy_cb_t) (pa_mainloop_api *api, pa_signal_event*e, void *userdata); 46 47 /** Initialize the UNIX signal subsystem and bind it to the specified main loop */ 48 int pa_signal_init(pa_mainloop_api *api); 49 50 /** Cleanup the signal subsystem */ 51 void pa_signal_done(void); 52 53 /** Create a new UNIX signal event source object */ 54 pa_signal_event* pa_signal_new(int sig, pa_signal_cb_t callback, void *userdata); 55 56 /** Free a UNIX signal event source object */ 57 void pa_signal_free(pa_signal_event *e); 58 59 /** Set a function that is called when the signal event source is destroyed. Use this to free the userdata argument if required */ 60 void pa_signal_set_destroy(pa_signal_event *e, pa_signal_destroy_cb_t callback); 61 62 PA_C_DECL_END 63 64 #endif 65