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9f0a21e641
Add the FreeBSD platform code to the OpenZFS repository. As of this commit the source can be compiled and tested on FreeBSD 11 and 12. Subsequent commits are now required to compile on FreeBSD and Linux. Additionally, they must pass the ZFS Test Suite on FreeBSD which is being run by the CI. As of this commit 1230 tests pass on FreeBSD and there are no unexpected failures. Reviewed-by: Sean Eric Fagan <sef@ixsystems.com> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Co-authored-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Matt Macy <mmacy@FreeBSD.org> Signed-off-by: Ryan Moeller <ryan@iXsystems.com> Closes #898 Closes #8987
139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/*
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* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/atomic.h>
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#ifdef _KERNEL
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#include <sys/kernel.h>
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struct mtx atomic_mtx;
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MTX_SYSINIT(atomic, &atomic_mtx, "atomic", MTX_DEF);
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#else
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#include <pthread.h>
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#define mtx_lock(lock) pthread_mutex_lock(lock)
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#define mtx_unlock(lock) pthread_mutex_unlock(lock)
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static pthread_mutex_t atomic_mtx;
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static __attribute__((constructor)) void
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atomic_init(void)
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{
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pthread_mutex_init(&atomic_mtx, NULL);
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}
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#endif
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#if !defined(__LP64__) && !defined(__mips_n32) && \
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!defined(ARM_HAVE_ATOMIC64) && !defined(I386_HAVE_ATOMIC64)
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void
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atomic_add_64(volatile uint64_t *target, int64_t delta)
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{
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mtx_lock(&atomic_mtx);
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*target += delta;
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mtx_unlock(&atomic_mtx);
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}
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void
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atomic_dec_64(volatile uint64_t *target)
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{
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mtx_lock(&atomic_mtx);
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*target -= 1;
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mtx_unlock(&atomic_mtx);
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}
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#endif
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uint64_t
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atomic_add_64_nv(volatile uint64_t *target, int64_t delta)
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{
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uint64_t newval;
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mtx_lock(&atomic_mtx);
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newval = (*target += delta);
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mtx_unlock(&atomic_mtx);
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return (newval);
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}
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#if defined(__powerpc__) || defined(__arm__) || defined(__mips__)
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void
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atomic_or_8(volatile uint8_t *target, uint8_t value)
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{
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mtx_lock(&atomic_mtx);
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*target |= value;
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mtx_unlock(&atomic_mtx);
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}
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#endif
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uint8_t
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atomic_or_8_nv(volatile uint8_t *target, uint8_t value)
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{
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uint8_t newval;
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mtx_lock(&atomic_mtx);
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newval = (*target |= value);
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mtx_unlock(&atomic_mtx);
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return (newval);
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}
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uint64_t
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atomic_cas_64(volatile uint64_t *target, uint64_t cmp, uint64_t newval)
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{
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uint64_t oldval;
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mtx_lock(&atomic_mtx);
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oldval = *target;
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if (oldval == cmp)
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*target = newval;
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mtx_unlock(&atomic_mtx);
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return (oldval);
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}
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uint32_t
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atomic_cas_32(volatile uint32_t *target, uint32_t cmp, uint32_t newval)
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{
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uint32_t oldval;
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mtx_lock(&atomic_mtx);
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oldval = *target;
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if (oldval == cmp)
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*target = newval;
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mtx_unlock(&atomic_mtx);
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return (oldval);
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}
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void
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membar_producer(void)
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{
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/* nothing */
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}
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