/src/gstreamer/subprojects/libdrm-2.4.124/libdrm_macros.h

Source
/*
 * Copyright © 2014 NVIDIA Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef LIBDRM_LIBDRM_H
#define LIBDRM_LIBDRM_H

#if HAVE_VISIBILITY
#  define drm_private __attribute__((visibility("hidden")))
#  define drm_public  __attribute__((visibility("default")))
#else
#  define drm_private
#  define drm_public
#endif


/**
 * Static (compile-time) assertion.
 * Basically, use COND to dimension an array.  If COND is false/zero the
 * array size will be -1 and we'll get a compilation error.
 */
#define STATIC_ASSERT(COND) \
   do { \
      (void) sizeof(char [1 - 2*!(COND)]); \
   } while (0)


#include <sys/mman.h>

#if defined(ANDROID) && !defined(__LP64__)
#include <errno.h> /* for EINVAL */

static inline void *drm_mmap(void *addr, size_t length, int prot, int flags,
                             int fd, loff_t offset)
{
   /* offset must be aligned to 4096 (not necessarily the page size) */
   if (offset & 4095) {
      errno = EINVAL;
      return MAP_FAILED;
   }

   return mmap64(addr, length, prot, flags, fd, offset);
}

#  define drm_munmap(addr, length) \
              munmap(addr, length)


#else

/* assume large file support exists */
#  define drm_mmap(addr, length, prot, flags, fd, offset) \
              mmap(addr, length, prot, flags, fd, offset)


static inline int drm_munmap(void *addr, size_t length)
{
   /* Copied from configure code generated by AC_SYS_LARGEFILE */
#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + \
                     (((off_t) 1 << 31) << 31))
   STATIC_ASSERT(LARGE_OFF_T % 2147483629 == 721 &&
                 LARGE_OFF_T % 2147483647 == 1);
#undef LARGE_OFF_T

   return munmap(addr, length);
}
#endif

#endif

Coverage Report

Created: 2026-02-24 07:11

Line	Count	Source
1		/*
2		* Copyright © 2014 NVIDIA Corporation
3		*
4		* Permission is hereby granted, free of charge, to any person obtaining a
5		* copy of this software and associated documentation files (the "Software"),
6		* to deal in the Software without restriction, including without limitation
7		* the rights to use, copy, modify, merge, publish, distribute, sublicense,
8		* and/or sell copies of the Software, and to permit persons to whom the
9		* Software is furnished to do so, subject to the following conditions:
10		*
11		* The above copyright notice and this permission notice shall be included in
12		* all copies or substantial portions of the Software.
13		*
14		* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15		* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16		* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17		* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18		* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19		* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20		* OTHER DEALINGS IN THE SOFTWARE.
21		*/
22
23		#ifndef LIBDRM_LIBDRM_H
24		#define LIBDRM_LIBDRM_H
25
26		#if HAVE_VISIBILITY
27		# define drm_private __attribute__((visibility("hidden")))
28		# define drm_public __attribute__((visibility("default")))
29		#else
30		# define drm_private
31		# define drm_public
32		#endif
33
34
35		/**
36		* Static (compile-time) assertion.
37		* Basically, use COND to dimension an array. If COND is false/zero the
38		* array size will be -1 and we'll get a compilation error.
39		*/
40		#define STATIC_ASSERT(COND) \
41	0	do { \
42	0	(void) sizeof(char [1 - 2*!(COND)]); \
43	0	} while (0)
44
45
46		#include <sys/mman.h>
47
48		#if defined(ANDROID) && !defined(__LP64__)
49		#include <errno.h> /* for EINVAL */
50
51		static inline void drm_mmap(void addr, size_t length, int prot, int flags,
52		int fd, loff_t offset)
53		{
54		/* offset must be aligned to 4096 (not necessarily the page size) */
55		if (offset & 4095) {
56		errno = EINVAL;
57		return MAP_FAILED;
58		}
59
60		return mmap64(addr, length, prot, flags, fd, offset);
61		}
62
63		# define drm_munmap(addr, length) \
64		munmap(addr, length)
65
66
67		#else
68
69		/* assume large file support exists */
70		# define drm_mmap(addr, length, prot, flags, fd, offset) \
71	0	mmap(addr, length, prot, flags, fd, offset)
72
73
74		static inline int drm_munmap(void *addr, size_t length)
75	0	{
76		/* Copied from configure code generated by AC_SYS_LARGEFILE */
77	0	#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + \
78	0	(((off_t) 1 << 31) << 31))
79	0	STATIC_ASSERT(LARGE_OFF_T % 2147483629 == 721 &&
80	0	LARGE_OFF_T % 2147483647 == 1);
81	0	#undef LARGE_OFF_T
82
83	0	return munmap(addr, length);
84	0	} Unexecuted instantiation: xf86drm.c:drm_munmap Unexecuted instantiation: xf86drmHash.c:drm_munmap Unexecuted instantiation: xf86drmRandom.c:drm_munmap Unexecuted instantiation: xf86drmSL.c:drm_munmap Unexecuted instantiation: xf86drmMode.c:drm_munmap
85		#endif
86
87		#endif