/usr/include/X11/xshmfence.h is in libxshmfence-dev 1.2-1+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /*
* Copyright © 2013 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifndef _XSHMFENCE_H_
#define _XSHMFENCE_H_
#include <X11/Xfuncproto.h>
#define HAVE_STRUCT_XSHMFENCE 1
struct xshmfence;
_X_EXPORT int
xshmfence_trigger(struct xshmfence *f);
_X_EXPORT int
xshmfence_await(struct xshmfence *f);
_X_EXPORT int
xshmfence_query(struct xshmfence *f);
_X_EXPORT void
xshmfence_reset(struct xshmfence *f);
_X_EXPORT int
xshmfence_alloc_shm(void);
_X_EXPORT struct xshmfence *
xshmfence_map_shm(int fd);
_X_EXPORT void
xshmfence_unmap_shm(struct xshmfence *f);
#endif /* _XSHMFENCE_H_ */
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