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https://github.com/ImageMagick/ImageMagick.git
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Cristy
115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/*
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Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization
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dedicated to making software imaging solutions freely available.
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You may not use this file except in compliance with the License. You may
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obtain a copy of the License at
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https://imagemagick.org/license/
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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MagickCore memory methods.
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*/
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#ifndef MAGICKCORE_MEMORY_H
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#define MAGICKCORE_MEMORY_H
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#include <errno.h>
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#define MAGICK_INT_MAX (INT_MAX)
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#define MAGICK_PTRDIFF_MAX (PTRDIFF_MAX)
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#define MAGICK_PTRDIFF_MIN (-PTRDIFF_MAX-1)
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#define MAGICK_SIZE_MAX (SIZE_MAX)
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#define MAGICK_SSIZE_MAX (SSIZE_MAX)
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#define MAGICK_SSIZE_MIN (-SSIZE_MAX-1)
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#define MAGICK_UCHAR_MAX (UCHAR_MAX)
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#define MAGICK_UINT_MAX (UINT_MAX)
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#define MAGICK_ULONG_MAX (ULONG_MAX)
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#define MAGICK_USHORT_MAX (USHRT_MAX)
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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typedef struct _MemoryInfo
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MemoryInfo;
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typedef void
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*(*AcquireMemoryHandler)(size_t) magick_alloc_size(1),
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(*DestroyMemoryHandler)(void *),
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*(*ResizeMemoryHandler)(void *,size_t) magick_alloc_size(2),
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*(*AcquireAlignedMemoryHandler)(const size_t,const size_t),
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(*RelinquishAlignedMemoryHandler)(void *);
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extern MagickExport MemoryInfo
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*AcquireVirtualMemory(const size_t,const size_t) magick_alloc_sizes(1,2),
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*RelinquishVirtualMemory(MemoryInfo *);
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extern MagickExport size_t
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GetMaxMemoryRequest(void),
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GetMaxProfileSize(void);
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extern MagickExport void
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*AcquireAlignedMemory(const size_t,const size_t)
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magick_attribute((__malloc__)) magick_alloc_sizes(1,2),
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*AcquireMagickMemory(const size_t) magick_attribute((__malloc__))
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magick_alloc_size(1),
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*AcquireCriticalMemory(const size_t),
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*AcquireQuantumMemory(const size_t,const size_t)
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magick_attribute((__malloc__)) magick_alloc_sizes(1,2),
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*CopyMagickMemory(void *magick_restrict,const void *magick_restrict,
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const size_t) magick_attribute((__nonnull__)),
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DestroyMagickMemory(void),
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GetMagickMemoryMethods(AcquireMemoryHandler *,ResizeMemoryHandler *,
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DestroyMemoryHandler *),
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*GetVirtualMemoryBlob(const MemoryInfo *),
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*RelinquishAlignedMemory(void *),
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*RelinquishMagickMemory(void *),
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*ResetMagickMemory(void *,int,const size_t),
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*ResizeMagickMemory(void *,const size_t)
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magick_attribute((__malloc__)) magick_alloc_size(2),
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*ResizeQuantumMemory(void *,const size_t,const size_t)
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magick_attribute((__malloc__)) magick_alloc_sizes(2,3),
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SetMagickAlignedMemoryMethods(AcquireAlignedMemoryHandler,
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RelinquishAlignedMemoryHandler),
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SetMagickMemoryMethods(AcquireMemoryHandler,ResizeMemoryHandler,
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DestroyMemoryHandler);
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static inline MagickBooleanType HeapOverflowSanityCheck(
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const size_t count,const size_t quantum)
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{
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if ((count == 0) || (quantum == 0))
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return(MagickTrue);
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if (count > (MAGICK_SIZE_MAX/quantum))
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{
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errno=ENOMEM;
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return(MagickTrue);
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}
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return(MagickFalse);
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}
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static inline MagickBooleanType HeapOverflowSanityCheckGetSize(
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const size_t count,const size_t quantum,size_t *const extent)
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{
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if ((count == 0) || (quantum == 0))
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return(MagickTrue);
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if (count > (MAGICK_SIZE_MAX/quantum))
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{
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errno=ENOMEM;
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return(MagickTrue);
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}
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if (extent != NULL)
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*extent=count*quantum;
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return(MagickFalse);
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}
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
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