308 lines
8.1 KiB
C
308 lines
8.1 KiB
C
/*
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* Adopted 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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* 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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* 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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*/
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#ifndef __ATOMIC_OPS_H__
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#define __ATOMIC_OPS_H__
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#include <assert.h>
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#if defined (__APPLE__)
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# include <libkern/OSAtomic.h>
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#elif defined(_MSC_VER)
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# include <windows.h>
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#endif
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/* needed for int types */
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#include "../../source/blender/blenlib/BLI_sys_types.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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# if (defined(__APPLE__) && defined(__ppc__))
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/* static inline __attribute__ here breaks osx ppc gcc42 build */
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# define ATOMIC_INLINE static __attribute__((always_inline))
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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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#endif
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#if defined(_M_X64) || defined(__amd64__) || defined(__x86_64__)
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# define LG_SIZEOF_PTR 3
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# define LG_SIZEOF_INT 2
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#else
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# define LG_SIZEOF_PTR 2
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# define LG_SIZEOF_INT 2
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#endif
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/******************************************************************************/
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/* 64-bit operations. */
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#if (LG_SIZEOF_PTR == 3 || LG_SIZEOF_INT == 3)
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# ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
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ATOMIC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (__sync_add_and_fetch(p, x));
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}
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ATOMIC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (__sync_sub_and_fetch(p, x));
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}
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#elif (defined(_MSC_VER))
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ATOMIC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (InterlockedExchangeAdd64(p, x));
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}
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ATOMIC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (InterlockedExchangeAdd64(p, -((int64_t)x)));
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}
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#elif (defined(__APPLE__))
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ATOMIC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (OSAtomicAdd64((int64_t)x, (int64_t *)p));
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}
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ATOMIC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (OSAtomicAdd64(-((int64_t)x), (int64_t *)p));
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}
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# elif (defined(__amd64__) || defined(__x86_64__))
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ATOMIC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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asm volatile (
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"lock; xaddq %0, %1;"
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: "+r" (x), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (x);
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}
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ATOMIC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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x = (uint64_t)(-(int64_t)x);
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asm volatile (
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"lock; xaddq %0, %1;"
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: "+r" (x), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (x);
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}
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# elif (defined(JEMALLOC_ATOMIC9))
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ATOMIC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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/*
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* atomic_fetchadd_64() doesn't exist, but we only ever use this
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* function on LP64 systems, so atomic_fetchadd_long() will do.
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*/
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assert(sizeof(uint64_t) == sizeof(unsigned long));
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return (atomic_fetchadd_long(p, (unsigned long)x) + x);
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}
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ATOMIC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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assert(sizeof(uint64_t) == sizeof(unsigned long));
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return (atomic_fetchadd_long(p, (unsigned long)(-(long)x)) - x);
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}
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# elif (defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_8))
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ATOMIC_INLINE uint64_t
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atomic_add_uint64(uint64_t *p, uint64_t x)
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{
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return (__sync_add_and_fetch(p, x));
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}
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ATOMIC_INLINE uint64_t
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atomic_sub_uint64(uint64_t *p, uint64_t x)
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{
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return (__sync_sub_and_fetch(p, x));
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}
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# else
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# error "Missing implementation for 64-bit atomic operations"
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# endif
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#endif
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/******************************************************************************/
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/* 32-bit operations. */
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#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
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ATOMIC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (__sync_add_and_fetch(p, x));
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}
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ATOMIC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (__sync_sub_and_fetch(p, x));
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}
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#elif (defined(_MSC_VER))
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ATOMIC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (InterlockedExchangeAdd(p, x));
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}
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ATOMIC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (InterlockedExchangeAdd(p, -((int32_t)x)));
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}
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#elif (defined(__APPLE__))
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ATOMIC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (OSAtomicAdd32((int32_t)x, (int32_t *)p));
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}
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ATOMIC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (OSAtomicAdd32(-((int32_t)x), (int32_t *)p));
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}
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#elif (defined(__i386__) || defined(__amd64__) || defined(__x86_64__))
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ATOMIC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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asm volatile (
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"lock; xaddl %0, %1;"
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: "+r" (x), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (x);
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}
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ATOMIC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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x = (uint32_t)(-(int32_t)x);
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asm volatile (
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"lock; xaddl %0, %1;"
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: "+r" (x), "=m" (*p) /* Outputs. */
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: "m" (*p) /* Inputs. */
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);
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return (x);
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}
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#elif (defined(JEMALLOC_ATOMIC9))
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ATOMIC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (atomic_fetchadd_32(p, x) + x);
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}
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ATOMIC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (atomic_fetchadd_32(p, (uint32_t)(-(int32_t)x)) - x);
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}
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#elif (defined(JE_FORCE_SYNC_COMPARE_AND_SWAP_4))
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ATOMIC_INLINE uint32_t
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atomic_add_uint32(uint32_t *p, uint32_t x)
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{
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return (__sync_add_and_fetch(p, x));
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}
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ATOMIC_INLINE uint32_t
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atomic_sub_uint32(uint32_t *p, uint32_t x)
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{
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return (__sync_sub_and_fetch(p, x));
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}
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#else
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# error "Missing implementation for 32-bit atomic operations"
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#endif
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/******************************************************************************/
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/* size_t operations. */
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ATOMIC_INLINE size_t
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atomic_add_z(size_t *p, size_t x)
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{
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assert(sizeof(size_t) == 1 << LG_SIZEOF_PTR);
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#if (LG_SIZEOF_PTR == 3)
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return ((size_t)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
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#elif (LG_SIZEOF_PTR == 2)
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return ((size_t)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
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#endif
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}
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ATOMIC_INLINE size_t
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atomic_sub_z(size_t *p, size_t x)
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{
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assert(sizeof(size_t) == 1 << LG_SIZEOF_PTR);
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#if (LG_SIZEOF_PTR == 3)
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return ((size_t)atomic_add_uint64((uint64_t *)p,
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(uint64_t)-((int64_t)x)));
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#elif (LG_SIZEOF_PTR == 2)
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return ((size_t)atomic_add_uint32((uint32_t *)p,
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(uint32_t)-((int32_t)x)));
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#endif
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}
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/******************************************************************************/
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/* unsigned operations. */
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ATOMIC_INLINE unsigned
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atomic_add_u(unsigned *p, unsigned x)
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{
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assert(sizeof(unsigned) == 1 << LG_SIZEOF_INT);
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#if (LG_SIZEOF_INT == 3)
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return ((unsigned)atomic_add_uint64((uint64_t *)p, (uint64_t)x));
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#elif (LG_SIZEOF_INT == 2)
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return ((unsigned)atomic_add_uint32((uint32_t *)p, (uint32_t)x));
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#endif
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}
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ATOMIC_INLINE unsigned
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atomic_sub_u(unsigned *p, unsigned x)
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{
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assert(sizeof(unsigned) == 1 << LG_SIZEOF_INT);
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#if (LG_SIZEOF_INT == 3)
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return ((unsigned)atomic_add_uint64((uint64_t *)p,
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(uint64_t)-((int64_t)x)));
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#elif (LG_SIZEOF_INT == 2)
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return ((unsigned)atomic_add_uint32((uint32_t *)p,
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(uint32_t)-((int32_t)x)));
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#endif
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}
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#endif /* __ATOMIC_OPS_H__ */
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