forked from bartvdbraak/blender
4a179e8e3e
Blender uses 64bit atomics to manipulate SessionUUID, and these atomics were not defined on any of 32bit platforms. While official support is limited to 64bit platforms only, the code should not make assumptions about bitness or endianess, in terms that there should be codepaths and fallback (or provision of them) for 32bit platforms. This change makes 64bit atomic functions defined for all platforms. The atomic_test was compiled and successfully tested on i686 and armv7l platforms. The rest of compilation process of Blender will be very tedious, so that was not done. This change is essential, but not necessarily enough to make Blender compilable on i686 (ability to compile Blender on 32bit platforms was lost during the 2.91 development). This is a functional part of original fix done by Brecht in D9577.
138 lines
6.6 KiB
C
138 lines
6.6 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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#include "intern/atomic_ops_utils.h"
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/******************************************************************************/
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/* Function prototypes. */
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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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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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