memory-private.h

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00001 /*
00002   Copyright 1999-2020 ImageMagick Studio LLC, a non-profit organization
00003   dedicated to making software imaging solutions freely available.
00004   
00005   You may not use this file except in compliance with the License.  You may
00006   obtain a copy of the License at
00007   
00008     https://imagemagick.org/script/license.php
00009   
00010   Unless required by applicable law or agreed to in writing, software
00011   distributed under the License is distributed on an "AS IS" BASIS,
00012   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013   See the License for the specific language governing permissions and
00014   limitations under the License.
00015 
00016   MagickCore private memory methods.
00017 */
00018 #ifndef MAGICKCORE_MEMORY_PRIVATE_H
00019 #define MAGICKCORE_MEMORY_PRIVATE_H
00020 
00021 #include "MagickCore/magick-config.h"
00022 
00023 #if defined(__cplusplus) || defined(c_plusplus)
00024 extern "C" {
00025 #endif
00026 
00027 #if defined(__powerpc__)
00028 #  define CACHE_LINE_SIZE  (16 * MAGICKCORE_SIZEOF_VOID_P)
00029 #else
00030 #  define CACHE_LINE_SIZE  (8 * MAGICKCORE_SIZEOF_VOID_P)
00031 #endif
00032 
00033 #define CACHE_ALIGNED(n)  MAGICKCORE_ALIGN_UP(n,CACHE_LINE_SIZE)
00034 
00035 #if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 6))
00036 #if !defined(__ICC)
00037 #define MagickAssumeAligned(address) \
00038   __builtin_assume_aligned((address),CACHE_LINE_SIZE)
00039 #else
00040 #define MagickAssumeAligned(address)  (address)
00041 #endif
00042 #else
00043 #define MagickAssumeAligned(address)  (address)
00044 #endif
00045 
00046 extern MagickPrivate void
00047   ResetMaxMemoryRequest(void),
00048   ResetVirtualAnonymousMemory(void);
00049 
00050 #if defined(__cplusplus) || defined(c_plusplus)
00051 }
00052 #endif
00053 
00054 #endif

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