65ec7ec524
BF-admins agree to remove header information that isn't useful, to reduce noise. - BEGIN/END license blocks Developers should add non license comments as separate comment blocks. No need for separator text. - Contributors This is often invalid, outdated or misleading especially when splitting files. It's more useful to git-blame to find out who has developed the code. See P901 for script to perform these edits.
128 lines
5.0 KiB
C
128 lines
5.0 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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#ifndef __ATOMIC_OPS_UTILS_H__
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#define __ATOMIC_OPS_UTILS_H__
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#include <stdint.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <assert.h>
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/* little macro so inline keyword works */
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#if defined(_MSC_VER)
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# define ATOMIC_INLINE static __forceinline
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#else
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# define ATOMIC_INLINE static inline __attribute__((always_inline))
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#endif
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#ifdef __GNUC__
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# define _ATOMIC_LIKELY(x) __builtin_expect(!!(x), 1)
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# define _ATOMIC_UNLIKELY(x) __builtin_expect(!!(x), 0)
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#else
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# define _ATOMIC_LIKELY(x) (x)
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# define _ATOMIC_UNLIKELY(x) (x)
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#endif
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#if defined(__SIZEOF_POINTER__)
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# define LG_SIZEOF_PTR __SIZEOF_POINTER__
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#elif defined(UINTPTR_MAX)
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# if (UINTPTR_MAX == 0xFFFFFFFF)
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# define LG_SIZEOF_PTR 4
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# elif (UINTPTR_MAX == 0xFFFFFFFFFFFFFFFF)
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# define LG_SIZEOF_PTR 8
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# endif
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#elif defined(__WORDSIZE) /* Fallback for older glibc and cpp */
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# if (__WORDSIZE == 32)
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# define LG_SIZEOF_PTR 4
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# elif (__WORDSIZE == 64)
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# define LG_SIZEOF_PTR 8
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# endif
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#endif
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#ifndef LG_SIZEOF_PTR
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# error "Cannot find pointer size"
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#endif
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#if (UINT_MAX == 0xFFFFFFFF)
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# define LG_SIZEOF_INT 4
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#elif (UINT_MAX == 0xFFFFFFFFFFFFFFFF)
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# define LG_SIZEOF_INT 8
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#else
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# error "Cannot find int size"
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#endif
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/* Copied from BLI_utils... */
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/* C++ can't use _Static_assert, expects static_assert() but c++0x only,
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* Coverity also errors out. */
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#if (!defined(__cplusplus)) && \
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(!defined(__COVERITY__)) && \
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(defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 406)) /* gcc4.6+ only */
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# define ATOMIC_STATIC_ASSERT(a, msg) __extension__ _Static_assert(a, msg);
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#else
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/* Code adapted from http://www.pixelbeat.org/programming/gcc/static_assert.html */
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/* Note we need the two concats below because arguments to ## are not expanded, so we need to
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* expand __LINE__ with one indirection before doing the actual concatenation. */
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# define ATOMIC_ASSERT_CONCAT_(a, b) a##b
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# define ATOMIC_ASSERT_CONCAT(a, b) ATOMIC_ASSERT_CONCAT_(a, b)
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/* These can't be used after statements in c89. */
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# if defined(__COUNTER__) /* MSVC */
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# define ATOMIC_STATIC_ASSERT(a, msg) \
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; enum { ATOMIC_ASSERT_CONCAT(static_assert_, __COUNTER__) = 1 / (int)(!!(a)) };
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# else /* older gcc, clang... */
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/* This can't be used twice on the same line so ensure if using in headers
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* that the headers are not included twice (by wrapping in #ifndef...#endif)
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* Note it doesn't cause an issue when used on same line of separate modules
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* compiled with gcc -combine -fwhole-program. */
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# define ATOMIC_STATIC_ASSERT(a, msg) \
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; enum { ATOMIC_ASSERT_CONCAT(assert_line_, __LINE__) = 1 / (int)(!!(a)) };
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# endif
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#endif
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#endif /* __ATOMIC_OPS_UTILS_H__ */
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