/usr/include/rtai/rtai_rwl.h is in librtai-dev 3.9.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 1999-2003 Paolo Mantegazza <mantegazza@aero.polimi.it>
*
* 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 _RTAI_RWL_H
#define _RTAI_RWL_H
#include <rtai_sem.h>
struct rtai_rwlock;
#ifdef __KERNEL__
#ifndef __cplusplus
typedef struct rtai_rwlock {
SEM wrmtx,
wrsem,
rdsem;
} RWL;
#else /* __cplusplus */
extern "C" {
#endif /* !__cplusplus */
RTAI_SYSCALL_MODE int rt_typed_rwl_init(RWL *rwl, int type);
#define rt_rwl_init(rwl) rt_typed_rwl_init(rwl, RESEM_RECURS)
RTAI_SYSCALL_MODE int rt_rwl_delete(struct rtai_rwlock *rwl);
RTAI_SYSCALL_MODE RWL *_rt_named_rwl_init(unsigned long rwl_name);
RTAI_SYSCALL_MODE int rt_named_rwl_delete(RWL *rwl);
RTAI_SYSCALL_MODE int rt_rwl_rdlock(struct rtai_rwlock *rwl);
RTAI_SYSCALL_MODE int rt_rwl_rdlock_if(struct rtai_rwlock *rwl);
RTAI_SYSCALL_MODE int rt_rwl_rdlock_until(struct rtai_rwlock *rwl, RTIME time);
RTAI_SYSCALL_MODE int rt_rwl_rdlock_timed(struct rtai_rwlock *rwl, RTIME delay);
RTAI_SYSCALL_MODE int rt_rwl_wrlock(struct rtai_rwlock *rwl);
RTAI_SYSCALL_MODE int rt_rwl_wrlock_if(struct rtai_rwlock *rwl);
RTAI_SYSCALL_MODE int rt_rwl_wrlock_until(struct rtai_rwlock *rwl, RTIME time);
RTAI_SYSCALL_MODE int rt_rwl_wrlock_timed(struct rtai_rwlock *rwl, RTIME delay);
RTAI_SYSCALL_MODE int rt_rwl_unlock(struct rtai_rwlock *rwl);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#else /* !__KERNEL__ */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define rt_rwl_init(rwl) rt_typed_rwl_init(rwl, RESEM_RECURS)
RTAI_PROTO(struct rtai_rwlock *, rt_typed_rwl_init,(unsigned long name, int type))
{
struct { unsigned long name; long type; } arg = { name, type };
return (struct rtai_rwlock *)rtai_lxrt(BIDX, SIZARG, LXRT_RWL_INIT, &arg).v[LOW];
}
RTAI_PROTO(int, rt_rwl_delete,(struct rtai_rwlock *rwl))
{
struct { struct rtai_rwlock *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, LXRT_RWL_DELETE, &arg).i[LOW];
}
RTAI_PROTO(struct rtai_rwlock *, rt_named_rwl_init,(const char *name))
{
struct { unsigned long name; } arg = { nam2num(name) };
return (struct rtai_rwlock *)rtai_lxrt(BIDX, SIZARG, NAMED_RWL_INIT, &arg).v[LOW];
}
RTAI_PROTO(int, rt_named_rwl_delete,(struct rtai_rwlock *rwl))
{
struct { struct rtai_rwlock *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, NAMED_RWL_DELETE, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_rdlock,(struct rtai_rwlock *rwl))
{
struct { struct rtai_rwlock *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, RWL_RDLOCK, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_rdlock_if,(struct rtai_rwlock *rwl))
{
struct { void *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, RWL_RDLOCK_IF, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_rdlock_until,(struct rtai_rwlock *rwl, RTIME time))
{
struct { struct rtai_rwlock *rwl; RTIME time; } arg = { rwl, time };
return rtai_lxrt(BIDX, SIZARG, RWL_RDLOCK_UNTIL, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_rdlock_timed,(struct rtai_rwlock *rwl, RTIME delay))
{
struct { struct rtai_rwlock *rwl; RTIME delay; } arg = { rwl, delay };
return rtai_lxrt(BIDX, SIZARG, RWL_RDLOCK_TIMED, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_wrlock,(struct rtai_rwlock *rwl))
{
struct { struct rtai_rwlock *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, RWL_WRLOCK, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_wrlock_if,(struct rtai_rwlock *rwl))
{
struct { struct rtai_rwlock *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, RWL_WRLOCK_IF, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_wrlock_until,(struct rtai_rwlock *rwl, RTIME time))
{
struct { struct rtai_rwlock *rwl; RTIME time; } arg = { rwl, time };
return rtai_lxrt(BIDX, SIZARG, RWL_WRLOCK_UNTIL, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_wrlock_timed,(struct rtai_rwlock *rwl, RTIME delay))
{
struct { struct rtai_rwlock *rwl; RTIME delay; } arg = { rwl, delay };
return rtai_lxrt(BIDX, SIZARG, RWL_WRLOCK_TIMED, &arg).i[LOW];
}
RTAI_PROTO(int, rt_rwl_unlock,(struct rtai_rwlock *rwl))
{
struct { struct rtai_rwlock *rwl; } arg = { rwl };
return rtai_lxrt(BIDX, SIZARG, RWL_UNLOCK, &arg).i[LOW];
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __KERNEL__ */
#if !defined(__KERNEL__) || defined(__cplusplus)
typedef struct rtai_rwlock {
int opaque;
} RWL;
#endif /* !__KERNEL__ || __cplusplus */
#endif /* !_RTAI_RWL_H */
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