150 lines
7.0 KiB
C
150 lines
7.0 KiB
C
/*
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* Original code from jemalloc with this license:
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*
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* Copyright (C) 2002-2013 Jason Evans <jasone@canonware.com>.
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* All rights reserved.
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* Copyright (C) 2007-2012 Mozilla Foundation. All rights reserved.
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* Copyright (C) 2009-2013 Facebook, Inc. 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 are met:
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* 1. Redistributions of source code must retain the above copyright notice(s),
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice(s),
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2016 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: adapted from jemalloc.
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*/
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/** \file
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* \ingroup Atomic
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*
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* \brief Provides wrapper around system-specific atomic primitives,
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* and some extensions (faked-atomic operations over float numbers).
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*/
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#ifndef __ATOMIC_OPS_H__
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#define __ATOMIC_OPS_H__
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#if defined(__arm__)
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/* Attempt to fix compilation error on Debian armel kernel.
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* arm7 architecture does have both 32 and 64bit atomics, however
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* it's gcc doesn't have __GCC_HAVE_SYNC_COMPARE_AND_SWAP_n defined.
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*/
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# define JE_FORCE_SYNC_COMPARE_AND_SWAP_1
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# define JE_FORCE_SYNC_COMPARE_AND_SWAP_4
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# define JE_FORCE_SYNC_COMPARE_AND_SWAP_8
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#endif
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#include "intern/atomic_ops_utils.h"
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/******************************************************************************/
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/* Function prototypes. */
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#if (LG_SIZEOF_PTR == 8 || LG_SIZEOF_INT == 8)
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ATOMIC_INLINE uint64_t atomic_add_and_fetch_uint64(uint64_t *p, uint64_t x);
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ATOMIC_INLINE uint64_t atomic_sub_and_fetch_uint64(uint64_t *p, uint64_t x);
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ATOMIC_INLINE uint64_t atomic_fetch_and_add_uint64(uint64_t *p, uint64_t x);
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ATOMIC_INLINE uint64_t atomic_fetch_and_sub_uint64(uint64_t *p, uint64_t x);
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ATOMIC_INLINE uint64_t atomic_cas_uint64(uint64_t *v, uint64_t old, uint64_t _new);
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ATOMIC_INLINE int64_t atomic_add_and_fetch_int64(int64_t *p, int64_t x);
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ATOMIC_INLINE int64_t atomic_sub_and_fetch_int64(int64_t *p, int64_t x);
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ATOMIC_INLINE int64_t atomic_fetch_and_add_int64(int64_t *p, int64_t x);
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ATOMIC_INLINE int64_t atomic_fetch_and_sub_int64(int64_t *p, int64_t x);
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ATOMIC_INLINE int64_t atomic_cas_int64(int64_t *v, int64_t old, int64_t _new);
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#endif
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ATOMIC_INLINE uint32_t atomic_add_and_fetch_uint32(uint32_t *p, uint32_t x);
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ATOMIC_INLINE uint32_t atomic_sub_and_fetch_uint32(uint32_t *p, uint32_t x);
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ATOMIC_INLINE uint32_t atomic_cas_uint32(uint32_t *v, uint32_t old, uint32_t _new);
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ATOMIC_INLINE uint32_t atomic_fetch_and_add_uint32(uint32_t *p, uint32_t x);
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ATOMIC_INLINE uint32_t atomic_fetch_and_or_uint32(uint32_t *p, uint32_t x);
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ATOMIC_INLINE uint32_t atomic_fetch_and_and_uint32(uint32_t *p, uint32_t x);
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ATOMIC_INLINE int32_t atomic_add_and_fetch_int32(int32_t *p, int32_t x);
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ATOMIC_INLINE int32_t atomic_sub_and_fetch_int32(int32_t *p, int32_t x);
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ATOMIC_INLINE int32_t atomic_cas_int32(int32_t *v, int32_t old, int32_t _new);
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ATOMIC_INLINE int32_t atomic_fetch_and_add_int32(int32_t *p, int32_t x);
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ATOMIC_INLINE int32_t atomic_fetch_and_or_int32(int32_t *p, int32_t x);
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ATOMIC_INLINE int32_t atomic_fetch_and_and_int32(int32_t *p, int32_t x);
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ATOMIC_INLINE uint8_t atomic_fetch_and_or_uint8(uint8_t *p, uint8_t b);
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ATOMIC_INLINE uint8_t atomic_fetch_and_and_uint8(uint8_t *p, uint8_t b);
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ATOMIC_INLINE int8_t atomic_fetch_and_or_int8(int8_t *p, int8_t b);
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ATOMIC_INLINE int8_t atomic_fetch_and_and_int8(int8_t *p, int8_t b);
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ATOMIC_INLINE char atomic_fetch_and_or_char(char *p, char b);
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ATOMIC_INLINE char atomic_fetch_and_and_char(char *p, char b);
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ATOMIC_INLINE size_t atomic_add_and_fetch_z(size_t *p, size_t x);
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ATOMIC_INLINE size_t atomic_sub_and_fetch_z(size_t *p, size_t x);
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ATOMIC_INLINE size_t atomic_fetch_and_add_z(size_t *p, size_t x);
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ATOMIC_INLINE size_t atomic_fetch_and_sub_z(size_t *p, size_t x);
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ATOMIC_INLINE size_t atomic_cas_z(size_t *v, size_t old, size_t _new);
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/* Uses CAS loop, see warning below. */
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ATOMIC_INLINE size_t atomic_fetch_and_update_max_z(size_t *p, size_t x);
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ATOMIC_INLINE unsigned int atomic_add_and_fetch_u(unsigned int *p, unsigned int x);
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ATOMIC_INLINE unsigned int atomic_sub_and_fetch_u(unsigned int *p, unsigned int x);
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ATOMIC_INLINE unsigned int atomic_fetch_and_add_u(unsigned int *p, unsigned int x);
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ATOMIC_INLINE unsigned int atomic_fetch_and_sub_u(unsigned int *p, unsigned int x);
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ATOMIC_INLINE unsigned int atomic_cas_u(unsigned int *v, unsigned int old, unsigned int _new);
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ATOMIC_INLINE void *atomic_cas_ptr(void **v, void *old, void *_new);
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ATOMIC_INLINE float atomic_cas_float(float *v, float old, float _new);
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/* WARNING! Float 'atomics' are really faked ones, those are actually closer to some kind of
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* spinlock-sync'ed operation, which means they are only efficient if collisions are highly
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* unlikely (i.e. if probability of two threads working on the same pointer at the same time is
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* very low). */
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ATOMIC_INLINE float atomic_add_and_fetch_fl(float *p, const float x);
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/******************************************************************************/
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/* Include system-dependent implementations. */
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/* Note that we are using _unix flavor as fallback here
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* (it will raise precompiler errors as needed). */
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#if defined(_MSC_VER)
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# include "intern/atomic_ops_msvc.h"
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#else
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# include "intern/atomic_ops_unix.h"
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#endif
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/* Include 'fake' atomic extensions, built over real atomic primitives. */
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#include "intern/atomic_ops_ext.h"
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#endif /* __ATOMIC_OPS_H__ */
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