/usr/include/xenomai/native/buffer.h is in libxenomai-dev 2.6.4+dfsg-1.
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 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | /**
* @file
* This file is part of the Xenomai project.
*
* @note Copyright (C) 2008 Philippe Gerum <rpm@xenomai.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _XENO_BUFFER_H
#define _XENO_BUFFER_H
#include <native/types.h>
/* Creation flags. */
#define B_PRIO XNSYNCH_PRIO /* Pend by task priority order. */
#define B_FIFO XNSYNCH_FIFO /* Pend by FIFO order. */
typedef struct rt_buffer_info {
int iwaiters;
int owaiters;
size_t totalmem;
size_t availmem;
char name[XNOBJECT_NAME_LEN];
} RT_BUFFER_INFO;
typedef struct rt_buffer_placeholder {
xnhandle_t opaque;
} RT_BUFFER_PLACEHOLDER;
#if (defined(__KERNEL__) || defined(__XENO_SIM__)) && !defined(DOXYGEN_CPP)
#include <nucleus/synch.h>
#include <nucleus/heap.h>
#include <native/ppd.h>
#define XENO_BUFFER_MAGIC 0x55550c0c
typedef struct rt_buffer {
unsigned magic; /* !< Magic code - must be first */
xnsynch_t isynch_base; /* !< Base synchronization object -- input side. */
xnsynch_t osynch_base; /* !< Base synchronization object -- output side. */
xnhandle_t handle; /* !< Handle in registry -- zero if unregistered. */
char name[XNOBJECT_NAME_LEN]; /* !< Symbolic name. */
int mode; /* !< Creation mode. */
off_t rdoff; /* !< Read offset. */
off_t wroff; /* !< Write offset. */
size_t fillsz; /* !< Filled space. */
u_long wrtoken; /* !< Write token. */
u_long rdtoken; /* !< Read token. */
size_t bufsz; /* !< Buffer size. */
caddr_t bufmem; /* !< Buffer space. */
#ifdef CONFIG_XENO_OPT_PERVASIVE
pid_t cpid; /* !< Creator's pid. */
#endif /* CONFIG_XENO_OPT_PERVASIVE */
xnholder_t rlink; /* !< Link in resource queue. */
#define rlink2buffer(ln) container_of(ln, RT_BUFFER, rlink)
xnqueue_t *rqueue; /* !< Backpointer to resource queue. */
} RT_BUFFER;
#ifdef __cplusplus
extern "C" {
#endif
#ifdef CONFIG_XENO_OPT_NATIVE_BUFFER
int __native_buffer_pkg_init(void);
void __native_buffer_pkg_cleanup(void);
static inline void __native_buffer_flush_rq(xnqueue_t *rq)
{
xeno_flush_rq(RT_BUFFER, rq, buffer);
}
struct xnbufd;
ssize_t rt_buffer_read_inner(RT_BUFFER *bf, struct xnbufd *bufd,
xntmode_t timeout_mode, RTIME timeout);
ssize_t rt_buffer_write_inner(RT_BUFFER *bf, struct xnbufd *bufd,
xntmode_t timeout_mode, RTIME timeout);
#else /* !CONFIG_XENO_OPT_NATIVE_BUFFER */
#define __native_buffer_pkg_init() ({ 0; })
#define __native_buffer_pkg_cleanup() do { } while(0)
#define __native_buffer_flush_rq(rq) do { } while(0)
#endif /* !CONFIG_XENO_OPT_NATIVE_BUFFER */
#ifdef __cplusplus
}
#endif
#else /* !(__KERNEL__ || __XENO_SIM__) */
typedef RT_BUFFER_PLACEHOLDER RT_BUFFER;
#ifdef __cplusplus
extern "C" {
#endif
int rt_buffer_bind(RT_BUFFER *bf,
const char *name,
RTIME timeout);
static inline int rt_buffer_unbind(RT_BUFFER *bf)
{
bf->opaque = XN_NO_HANDLE;
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /* __KERNEL__ || __XENO_SIM__ */
#ifdef __cplusplus
extern "C" {
#endif
/* Public interface. */
int rt_buffer_create(RT_BUFFER *bf,
const char *name,
size_t bufsz,
int mode);
int rt_buffer_delete(RT_BUFFER *bf);
ssize_t rt_buffer_write(RT_BUFFER *bf,
const void *ptr, size_t size,
RTIME timeout);
ssize_t rt_buffer_write_until(RT_BUFFER *bf,
const void *ptr, size_t size,
RTIME timeout);
ssize_t rt_buffer_read(RT_BUFFER *bf,
void *ptr, size_t size,
RTIME timeout);
ssize_t rt_buffer_read_until(RT_BUFFER *bf,
void *ptr, size_t size,
RTIME timeout);
int rt_buffer_clear(RT_BUFFER *bf);
int rt_buffer_inquire(RT_BUFFER *bf,
RT_BUFFER_INFO *info);
#ifdef __cplusplus
}
#endif
#endif /* !_XENO_BUFFER_H */
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