pulseaudio/src/pulsecore/memtrap.h
Ondrej Holecek 5effc83479 update FSF addresses to FSF web page
FSF addresses used in PA sources are no longer valid and rpmlint
generates numerous warnings during packaging because of this.
This patch changes all FSF addresses to FSF web page according to
the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html

Done automatically by sed-ing through sources.
2015-01-14 22:20:40 +02:00

49 lines
1.7 KiB
C

#ifndef foopulsecorememtraphfoo
#define foopulsecorememtraphfoo
/***
This file is part of PulseAudio.
Copyright 2009 Lennart Poettering
PulseAudio 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 2.1 of the
License, or (at your option) any later version.
PulseAudio 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 Lesser General Public
License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/types.h>
#include <pulsecore/macro.h>
/* This subsystem will trap SIGBUS on specific memory regions. The
* regions will be remapped to anonymous memory (i.e. writable NUL
* bytes) on SIGBUS, so that execution of the main program can
* continue though with memory having changed beneath its hands. With
* pa_memtrap_is_good() it is possible to query if a memory region is
* still 'good' i.e. no SIGBUS has happened yet for it.
*
* Intended usage is to handle memory mapped in which is controlled by
* other processes that might execute ftruncate() or when mapping inb
* hardware resources that might get invalidated when unplugged. */
typedef struct pa_memtrap pa_memtrap;
pa_memtrap* pa_memtrap_add(const void *start, size_t size);
pa_memtrap *pa_memtrap_update(pa_memtrap *m, const void *start, size_t size);
void pa_memtrap_remove(pa_memtrap *m);
bool pa_memtrap_is_good(pa_memtrap *m);
void pa_memtrap_install(void);
#endif