Move rtems/freebsd to freebsd and contrib to freebsd/contrib

1 files changed, 195 insertions, 0 deletions

diff --git a/freebsd/sys/lockmgr.h b/freebsd/sys/lockmgr.h
new file mode 100644
index 00000000..a58e963f
--- /dev/null
+++ b/freebsd/sys/lockmgr.h
@@ -0,0 +1,195 @@
+/*-
+ * Copyright (c) 2008 Attilio Rao <attilio@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice(s), this list of conditions and the following disclaimer as
+ *    the first lines of this file unmodified other than the possible 
+ *    addition of one or more copyright notices.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice(s), this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_SYS_LOCKMGR_HH_
+#define	_SYS_LOCKMGR_HH_
+
+#include <rtems/freebsd/sys/_lock.h>
+#include <rtems/freebsd/sys/_lockmgr.h>
+#include <rtems/freebsd/sys/_mutex.h>
+#include <rtems/freebsd/sys/_rwlock.h>
+
+#define	LK_SHARE			0x01
+#define	LK_SHARED_WAITERS		0x02
+#define	LK_EXCLUSIVE_WAITERS		0x04
+#define	LK_EXCLUSIVE_SPINNERS		0x08
+#define	LK_ALL_WAITERS							\
+	(LK_SHARED_WAITERS | LK_EXCLUSIVE_WAITERS)
+#define	LK_FLAGMASK							\
+	(LK_SHARE | LK_ALL_WAITERS | LK_EXCLUSIVE_SPINNERS)
+
+#define	LK_HOLDER(x)			((x) & ~LK_FLAGMASK)
+#define	LK_SHARERS_SHIFT		4
+#define	LK_SHARERS(x)			(LK_HOLDER(x) >> LK_SHARERS_SHIFT)
+#define	LK_SHARERS_LOCK(x)		((x) << LK_SHARERS_SHIFT | LK_SHARE)
+#define	LK_ONE_SHARER			(1 << LK_SHARERS_SHIFT)
+#define	LK_UNLOCKED			LK_SHARERS_LOCK(0)
+#define	LK_KERNPROC			((uintptr_t)(-1) & ~LK_FLAGMASK)
+
+#ifdef _KERNEL
+
+#if !defined(LOCK_FILE) || !defined(LOCK_LINE)
+#error	"LOCK_FILE and LOCK_LINE not defined, include <sys/lock.h> before"
+#endif
+
+struct thread;
+#define	lk_recurse	lock_object.lo_data
+
+/*
+ * Function prototipes.  Routines that start with an underscore are not part
+ * of the public interface and might be wrappered with a macro.
+ */
+int	 __lockmgr_args(struct lock *lk, u_int flags, struct lock_object *ilk,
+	    const char *wmesg, int prio, int timo, const char *file, int line);
+#if defined(INVARIANTS) || defined(INVARIANT_SUPPORT)
+void	 _lockmgr_assert(struct lock *lk, int what, const char *file, int line);
+#endif
+void	 _lockmgr_disown(struct lock *lk, const char *file, int line);
+
+void	 lockdestroy(struct lock *lk);
+void	 lockinit(struct lock *lk, int prio, const char *wmesg, int timo,
+	    int flags);
+#ifdef DDB
+int	 lockmgr_chain(struct thread *td, struct thread **ownerp);
+#endif
+void	 lockmgr_printinfo(struct lock *lk);
+int	 lockstatus(struct lock *lk);
+
+/*
+ * As far as the ilk can be a static NULL pointer these functions need a
+ * strict prototype in order to safely use the lock_object member.
+ */
+static __inline int
+_lockmgr_args(struct lock *lk, u_int flags, struct mtx *ilk, const char *wmesg,
+    int prio, int timo, const char *file, int line)
+{
+
+	return (__lockmgr_args(lk, flags, (ilk != NULL) ? &ilk->lock_object :
+	    NULL, wmesg, prio, timo, file, line));
+}
+
+static __inline int
+_lockmgr_args_rw(struct lock *lk, u_int flags, struct rwlock *ilk,
+    const char *wmesg, int prio, int timo, const char *file, int line)
+{
+
+	return (__lockmgr_args(lk, flags, (ilk != NULL) ? &ilk->lock_object :
+	    NULL, wmesg, prio, timo, file, line));
+}
+
+/*
+ * Define aliases in order to complete lockmgr KPI.
+ */
+#define	lockmgr(lk, flags, ilk)						\
+	_lockmgr_args((lk), (flags), (ilk), LK_WMESG_DEFAULT,		\
+	    LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, LOCK_FILE, LOCK_LINE)
+#define	lockmgr_args(lk, flags, ilk, wmesg, prio, timo)			\
+	_lockmgr_args((lk), (flags), (ilk), (wmesg), (prio), (timo),	\
+	    LOCK_FILE, LOCK_LINE)
+#define	lockmgr_args_rw(lk, flags, ilk, wmesg, prio, timo)		\
+	_lockmgr_args_rw((lk), (flags), (ilk), (wmesg), (prio), (timo),	\
+	    LOCK_FILE, LOCK_LINE)
+#define	lockmgr_disown(lk)						\
+	_lockmgr_disown((lk), LOCK_FILE, LOCK_LINE)
+#define	lockmgr_recursed(lk)						\
+	((lk)->lk_recurse != 0)
+#define	lockmgr_rw(lk, flags, ilk)					\
+	_lockmgr_args_rw((lk), (flags), (ilk), LK_WMESG_DEFAULT,	\
+	    LK_PRIO_DEFAULT, LK_TIMO_DEFAULT, LOCK_FILE, LOCK_LINE)
+#define	lockmgr_waiters(lk)						\
+	((lk)->lk_lock & LK_ALL_WAITERS)
+#ifdef INVARIANTS
+#define	lockmgr_assert(lk, what)					\
+	_lockmgr_assert((lk), (what), LOCK_FILE, LOCK_LINE)
+#else
+#define	lockmgr_assert(lk, what)
+#endif
+
+/*
+ * Flags for lockinit().
+ */
+#define	LK_INIT_MASK	0x0000FF
+#define	LK_CANRECURSE	0x000001
+#define	LK_NODUP	0x000002
+#define	LK_NOPROFILE	0x000004
+#define	LK_NOSHARE	0x000008
+#define	LK_NOWITNESS	0x000010
+#define	LK_QUIET	0x000020
+#define	LK_ADAPTIVE	0x000040
+
+/* LK_EXSLPFAIL to follow, even if not used in lockinit() */
+#define	LK_EXSLPFAIL	0x000080
+
+/*
+ * Additional attributes to be used in lockmgr().
+ */
+#define	LK_EATTR_MASK	0x00FF00
+#define	LK_INTERLOCK	0x000100
+#define	LK_NOWAIT	0x000200
+#define	LK_RETRY	0x000400
+#define	LK_SLEEPFAIL	0x000800
+#define	LK_TIMELOCK	0x001000
+
+/*
+ * Operations for lockmgr().
+ */
+#define	LK_TYPE_MASK	0xFF0000
+#define	LK_DOWNGRADE	0x010000
+#define	LK_DRAIN	0x020000
+#define	LK_EXCLOTHER	0x040000
+#define	LK_EXCLUSIVE	0x080000
+#define	LK_RELEASE	0x100000
+#define	LK_SHARED	0x200000
+#define	LK_UPGRADE	0x400000
+
+#define	LK_TOTAL_MASK	(LK_INIT_MASK | LK_EATTR_MASK | LK_TYPE_MASK)
+
+/*
+ * Default values for lockmgr_args().
+ */
+#define	LK_WMESG_DEFAULT	(NULL)
+#define	LK_PRIO_DEFAULT		(0)
+#define	LK_TIMO_DEFAULT		(0)
+
+/*
+ * Assertion flags.
+ */
+#if defined(INVARIANTS) || defined(INVARIANT_SUPPORT)
+#define	KA_LOCKED	LA_LOCKED
+#define	KA_SLOCKED	LA_SLOCKED
+#define	KA_XLOCKED	LA_XLOCKED
+#define	KA_UNLOCKED	LA_UNLOCKED
+#define	KA_RECURSED	LA_RECURSED
+#define	KA_NOTRECURSED	LA_NOTRECURSED
+#endif
+
+#endif /* _KERNEL */
+
+#endif /* !_SYS_LOCKMGR_HH_ */