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authorSebastian Huber <sebastian.huber@embedded-brains.de>2016-05-06 21:22:38 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2016-05-06 21:41:20 +0200
commit5b1f20b73f410544f06353d4e81d5097c21ceac9 (patch)
tree7697935c04ad4567b1e1a58b967c39e5561269c6 /rtemsbsd/rtems/rtems-bsd-rwlock.c
parentAdd kernel namespace exception for mbstat (diff)
downloadrtems-libbsd-5b1f20b73f410544f06353d4e81d5097c21ceac9.tar.bz2
Rename files for kernel namespace script
This makes it easier to create the kernel namespace header.
Diffstat (limited to 'rtemsbsd/rtems/rtems-bsd-rwlock.c')
-rw-r--r--rtemsbsd/rtems/rtems-bsd-rwlock.c293
1 files changed, 0 insertions, 293 deletions
diff --git a/rtemsbsd/rtems/rtems-bsd-rwlock.c b/rtemsbsd/rtems/rtems-bsd-rwlock.c
deleted file mode 100644
index d0b911d5..00000000
--- a/rtemsbsd/rtems/rtems-bsd-rwlock.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/**
- * @file
- *
- * @ingroup rtems_bsd_rtems
- *
- * @brief TODO.
- */
-
-/*
- * Copyright (c) 2011 OPTI Medical. All rights reserved.
- *
- * OPTI Medical
- * 235 Hembree Park Drive
- * Roswell, GA 30076
- * USA
- * <kevin.kirspel@optimedical.com>
- *
- * Copyright (c) 2013-2015 embedded brains GmbH. All rights reserved.
- *
- * embedded brains GmbH
- * Dornierstr. 4
- * 82178 Puchheim
- * Germany
- * <rtems@embedded-brains.de>
- *
- * 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, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
- */
-
-#include <machine/rtems-bsd-kernel-space.h>
-#include <machine/rtems-bsd-muteximpl.h>
-
-#include <rtems/bsd/sys/param.h>
-#include <rtems/bsd/sys/types.h>
-#include <sys/systm.h>
-#include <rtems/bsd/sys/lock.h>
-#include <sys/rwlock.h>
-
-#ifndef INVARIANTS
-#define _rw_assert(rw, what, file, line)
-#endif
-
-static void assert_rw(struct lock_object *lock, int what);
-static void lock_rw(struct lock_object *lock, int how);
-#ifdef KDTRACE_HOOKS
-static int owner_rw(struct lock_object *lock, struct thread **owner);
-#endif
-static int unlock_rw(struct lock_object *lock);
-
-struct lock_class lock_class_rw = {
- .lc_name = "rw",
- .lc_flags = LC_SLEEPLOCK | LC_RECURSABLE | LC_UPGRADABLE,
- .lc_assert = assert_rw,
-#ifdef DDB
- .lc_ddb_show = db_show_rwlock,
-#endif
- .lc_lock = lock_rw,
- .lc_unlock = unlock_rw,
-#ifdef KDTRACE_HOOKS
- .lc_owner = owner_rw,
-#endif
-};
-
-#define rw_wowner(rw) ((rw)->mutex.owner)
-
-#define rw_recursed(rw) ((rw)->mutex.nest_level != 0)
-
-void
-assert_rw(struct lock_object *lock, int what)
-{
- rw_assert((struct rwlock *)lock, what);
-}
-
-void
-lock_rw(struct lock_object *lock, int how)
-{
- rw_wlock((struct rwlock *)lock);
-}
-
-int
-unlock_rw(struct lock_object *lock)
-{
- rw_unlock((struct rwlock *)lock);
-
- return (0);
-}
-
-#ifdef KDTRACE_HOOKS
-int
-owner_rw(struct lock_object *lock, struct thread **owner)
-{
- struct rwlock *rw = (struct rwlock *)lock;
- uintptr_t x = rw->rw_lock;
-
- *owner = rw_wowner(rw);
- return ((x & RW_LOCK_READ) != 0 ? (RW_READERS(x) != 0) :
- (*owner != NULL));
-}
-#endif
-
-void
-rw_init_flags(struct rwlock *rw, const char *name, int opts)
-{
- int flags;
-
- flags = LO_UPGRADABLE;
- if (opts & RW_RECURSE)
- flags |= LO_RECURSABLE;
-
- rtems_bsd_mutex_init(&rw->lock_object, &rw->mutex, &lock_class_rw,
- name, NULL, flags);
-}
-
-void
-rw_destroy(struct rwlock *rw)
-{
-
- rtems_bsd_mutex_destroy(&rw->lock_object, &rw->mutex);
-}
-
-void
-rw_sysinit(void *arg)
-{
- struct rw_args *args = arg;
-
- rw_init(args->ra_rw, args->ra_desc);
-}
-
-void
-rw_sysinit_flags(void *arg)
-{
- struct rw_args_flags *args = arg;
-
- rw_init_flags(args->ra_rw, args->ra_desc, args->ra_flags);
-}
-
-int
-rw_wowned(struct rwlock *rw)
-{
- return (rtems_bsd_mutex_owned(&rw->mutex));
-}
-
-void
-_rw_wlock(struct rwlock *rw, const char *file, int line)
-{
- rtems_bsd_mutex_lock(&rw->lock_object, &rw->mutex);
-}
-
-int
-_rw_try_wlock(struct rwlock *rw, const char *file, int line)
-{
- return (rtems_bsd_mutex_trylock(&rw->lock_object, &rw->mutex));
-}
-
-void
-_rw_wunlock(struct rwlock *rw, const char *file, int line)
-{
- rtems_bsd_mutex_unlock(&rw->mutex);
-}
-
-void
-_rw_rlock(struct rwlock *rw, const char *file, int line)
-{
- rtems_bsd_mutex_lock(&rw->lock_object, &rw->mutex);
-}
-
-int
-_rw_try_rlock(struct rwlock *rw, const char *file, int line)
-{
- return (rtems_bsd_mutex_trylock(&rw->lock_object, &rw->mutex));
-}
-
-void
-_rw_runlock(struct rwlock *rw, const char *file, int line)
-{
- rtems_bsd_mutex_unlock(&rw->mutex);
-}
-
-int
-_rw_try_upgrade(struct rwlock *rw, const char *file, int line)
-{
- return (1);
-}
-
-void
-_rw_downgrade(struct rwlock *rw, const char *file, int line)
-{
- /* Nothing to do */
-}
-
-#ifdef INVARIANT_SUPPORT
-#ifndef INVARIANTS
-#undef _rw_assert
-#endif
-
-/*
- * In the non-WITNESS case, rw_assert() can only detect that at least
- * *some* thread owns an rlock, but it cannot guarantee that *this*
- * thread owns an rlock.
- */
-void
-_rw_assert(struct rwlock *rw, int what, const char *file, int line)
-{
-
- if (panicstr != NULL)
- return;
- switch (what) {
- case RA_LOCKED:
- case RA_LOCKED | RA_RECURSED:
- case RA_LOCKED | RA_NOTRECURSED:
- case RA_RLOCKED:
-#ifndef __rtems__
-#ifdef WITNESS
- witness_assert(&rw->lock_object, what, file, line);
-#else
- /*
- * If some other thread has a write lock or we have one
- * and are asserting a read lock, fail. Also, if no one
- * has a lock at all, fail.
- */
- if (rw->rw_lock == RW_UNLOCKED ||
- (!(rw->rw_lock & RW_LOCK_READ) && (what == RA_RLOCKED ||
- rw_wowner(rw) != curthread)))
- panic("Lock %s not %slocked @ %s:%d\n",
- rw->lock_object.lo_name, (what == RA_RLOCKED) ?
- "read " : "", file, line);
-
- if (!(rw->rw_lock & RW_LOCK_READ)) {
- if (rw_recursed(rw)) {
- if (what & RA_NOTRECURSED)
- panic("Lock %s recursed @ %s:%d\n",
- rw->lock_object.lo_name, file,
- line);
- } else if (what & RA_RECURSED)
- panic("Lock %s not recursed @ %s:%d\n",
- rw->lock_object.lo_name, file, line);
- }
-#endif
- break;
-#else /* __rtems__ */
- /* FALLTHROUGH */
-#endif /* __rtems__ */
- case RA_WLOCKED:
- case RA_WLOCKED | RA_RECURSED:
- case RA_WLOCKED | RA_NOTRECURSED:
- if (rw_wowner(rw) != _Thread_Get_executing())
- panic("Lock %s not exclusively locked @ %s:%d\n",
- rw->lock_object.lo_name, file, line);
- if (rw_recursed(rw)) {
- if (what & RA_NOTRECURSED)
- panic("Lock %s recursed @ %s:%d\n",
- rw->lock_object.lo_name, file, line);
- } else if (what & RA_RECURSED)
- panic("Lock %s not recursed @ %s:%d\n",
- rw->lock_object.lo_name, file, line);
- break;
- case RA_UNLOCKED:
-#ifdef WITNESS
- witness_assert(&rw->lock_object, what, file, line);
-#else
- /*
- * If we hold a write lock fail. We can't reliably check
- * to see if we hold a read lock or not.
- */
- if (rw_wowner(rw) == _Thread_Get_executing())
- panic("Lock %s exclusively locked @ %s:%d\n",
- rw->lock_object.lo_name, file, line);
-#endif
- break;
- default:
- panic("Unknown rw lock assertion: %d @ %s:%d", what, file,
- line);
- }
-}
-#endif /* INVARIANT_SUPPORT */