MagickCore  7.0.8
Convert, Edit, Or Compose Bitmap Images
Data Structures | Macros | Typedefs | Enumerations | Functions | Variables
memory.c File Reference
#include "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/memory_.h"
#include "MagickCore/memory-private.h"
#include "MagickCore/policy.h"
#include "MagickCore/resource_.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/utility-private.h"
Include dependency graph for memory.c:

Go to the source code of this file.

Data Structures

struct  _DataSegmentInfo
 
struct  _MagickMemoryMethods
 
struct  _MemoryInfo
 
struct  _MemoryPool
 

Macros

#define BlockFooter(block, size)   ((size_t *) ((char *) (block)+(size)-2*sizeof(size_t)))
 
#define BlockHeader(block)   ((size_t *) (block)-1)
 
#define BlockSize   4096
 
#define BlockThreshold   1024
 
#define MaxBlockExponent   16
 
#define MaxBlocks   ((BlockThreshold/(4*sizeof(size_t)))+MaxBlockExponent+1)
 
#define MaxSegments   1024
 
#define MemoryGuard   ((0xdeadbeef << 31)+0xdeafdeed)
 
#define NextBlock(block)   ((char *) (block)+SizeOfBlock(block))
 
#define NextBlockInList(block)   (*(void **) (block))
 
#define PreviousBlock(block)   ((char *) (block)-(*((size_t *) (block)-2)))
 
#define PreviousBlockBit   0x01
 
#define PreviousBlockInList(block)   (*((void **) (block)+1))
 
#define SegmentSize   (2*1024*1024)
 
#define SizeMask   (~0x01)
 
#define SizeOfBlock(block)   (*BlockHeader(block) & SizeMask)
 
#define AlignedExtent(size, alignment)   (((size)+((alignment)-1)) & ~((alignment)-1))
 

Typedefs

typedef struct _DataSegmentInfo DataSegmentInfo
 
typedef struct _MagickMemoryMethods MagickMemoryMethods
 
typedef struct _MemoryPool MemoryPool
 

Enumerations

enum  VirtualMemoryType { UndefinedVirtualMemory, AlignedVirtualMemory, MapVirtualMemory, UnalignedVirtualMemory }
 

Functions

MagickExport void * AcquireAlignedMemory (const size_t count, const size_t quantum)
 
MagickExport void * AcquireMagickMemory (const size_t size)
 
MagickExport void * AcquireQuantumMemory (const size_t count, const size_t quantum)
 
MagickExport MemoryInfo * AcquireVirtualMemory (const size_t count, const size_t quantum)
 
MagickExport void * CopyMagickMemory (void *destination, const void *source, const size_t size)
 
MagickExport void DestroyMagickMemory (void)
 
MagickExport void GetMagickMemoryMethods (AcquireMemoryHandler *acquire_memory_handler, ResizeMemoryHandler *resize_memory_handler, DestroyMemoryHandler *destroy_memory_handler)
 
MagickExport size_t GetMaxMemoryRequest (void)
 
MagickExport void * GetVirtualMemoryBlob (const MemoryInfo *memory_info)
 
MagickExport MagickBooleanType HeapOverflowSanityCheck (const size_t count, const size_t quantum)
 
MagickExport void * RelinquishAlignedMemory (void *memory)
 
MagickExport void * RelinquishMagickMemory (void *memory)
 
MagickExport MemoryInfo * RelinquishVirtualMemory (MemoryInfo *memory_info)
 
MagickExport void * ResetMagickMemory (void *memory, int byte, const size_t size)
 
MagickPrivate void ResetMaxMemoryRequest (void)
 
MagickPrivate void ResetVirtualAnonymousMemory (void)
 
MagickExport void * ResizeMagickMemory (void *memory, const size_t size)
 
MagickExport void * ResizeQuantumMemory (void *memory, const size_t count, const size_t quantum)
 
MagickExport void SetMagickMemoryMethods (AcquireMemoryHandler acquire_memory_handler, ResizeMemoryHandler resize_memory_handler, DestroyMemoryHandler destroy_memory_handler)
 

Variables

static size_t max_memory_request = 0
 
static size_t virtual_anonymous_memory = 0
 
static MagickMemoryMethods memory_methods
 

Macro Definition Documentation

◆ AlignedExtent

#define AlignedExtent (   size,
  alignment 
)    (((size)+((alignment)-1)) & ~((alignment)-1))

Referenced by AcquireAlignedMemory().

◆ BlockFooter

#define BlockFooter (   block,
  size 
)    ((size_t *) ((char *) (block)+(size)-2*sizeof(size_t)))

Definition at line 73 of file memory.c.

Referenced by RelinquishMagickMemory().

◆ BlockHeader

#define BlockHeader (   block)    ((size_t *) (block)-1)

Definition at line 75 of file memory.c.

Referenced by RelinquishMagickMemory().

◆ BlockSize

#define BlockSize   4096

Definition at line 76 of file memory.c.

◆ BlockThreshold

#define BlockThreshold   1024

Definition at line 77 of file memory.c.

◆ MaxBlockExponent

#define MaxBlockExponent   16

Definition at line 78 of file memory.c.

◆ MaxBlocks

#define MaxBlocks   ((BlockThreshold/(4*sizeof(size_t)))+MaxBlockExponent+1)

Definition at line 79 of file memory.c.

Referenced by AcquireMagickMemory().

◆ MaxSegments

#define MaxSegments   1024

Definition at line 80 of file memory.c.

Referenced by AcquireMagickMemory().

◆ MemoryGuard

#define MemoryGuard   ((0xdeadbeef << 31)+0xdeafdeed)

Definition at line 81 of file memory.c.

◆ NextBlock

#define NextBlock (   block)    ((char *) (block)+SizeOfBlock(block))

Definition at line 82 of file memory.c.

Referenced by RelinquishMagickMemory().

◆ NextBlockInList

#define NextBlockInList (   block)    (*(void **) (block))

Definition at line 83 of file memory.c.

◆ PreviousBlock

#define PreviousBlock (   block)    ((char *) (block)-(*((size_t *) (block)-2)))

Definition at line 84 of file memory.c.

Referenced by RelinquishMagickMemory().

◆ PreviousBlockBit

#define PreviousBlockBit   0x01

Definition at line 85 of file memory.c.

Referenced by RelinquishMagickMemory().

◆ PreviousBlockInList

#define PreviousBlockInList (   block)    (*((void **) (block)+1))

Definition at line 86 of file memory.c.

◆ SegmentSize

#define SegmentSize   (2*1024*1024)

Definition at line 87 of file memory.c.

Referenced by AcquireMagickMemory().

◆ SizeMask

#define SizeMask   (~0x01)

Definition at line 88 of file memory.c.

Referenced by AcquireMagickMemory(), and RelinquishMagickMemory().

◆ SizeOfBlock

#define SizeOfBlock (   block)    (*BlockHeader(block) & SizeMask)

Definition at line 89 of file memory.c.

Referenced by RelinquishMagickMemory().

Typedef Documentation

◆ DataSegmentInfo

typedef struct _DataSegmentInfo DataSegmentInfo

◆ MagickMemoryMethods

typedef struct _MagickMemoryMethods MagickMemoryMethods

◆ MemoryPool

typedef struct _MemoryPool MemoryPool

Enumeration Type Documentation

◆ VirtualMemoryType

enum VirtualMemoryType
Enumerator
UndefinedVirtualMemory 
AlignedVirtualMemory 
MapVirtualMemory 
UnalignedVirtualMemory 

Definition at line 94 of file memory.c.

Function Documentation

◆ AcquireAlignedMemory()

MagickExport void* AcquireAlignedMemory ( const size_t  count,
const size_t  quantum 
)

Definition at line 242 of file memory.c.

References AlignedExtent, CACHE_LINE_SIZE, GetMagickPageSize(), HeapOverflowSanityCheck(), and MagickFalse.

Referenced by AcquireCacheNexusPixels(), AcquireContributionThreadSet(), AcquireKernelBuiltIn(), AcquirePixelCacheNexus(), AcquirePixelList(), AcquireStreamInfo(), AcquireStreamPixels(), AcquireVirtualCacheView(), AcquireVirtualMemory(), AdaptiveBlurImage(), AdaptiveSharpenImage(), CloneCacheView(), CloneKernelInfo(), EdgeImage(), EmbossImage(), GetMotionBlurKernel(), OpenPixelCache(), ParseKernelArray(), SelectiveBlurImage(), SharpenImage(), and WriteStreamImage().

◆ AcquireMagickMemory()

MagickExport void* AcquireMagickMemory ( const size_t  size)

Definition at line 462 of file memory.c.

References _MagickMemoryMethods::acquire_memory_handler, ActivateSemaphoreInfo(), _MemoryPool::allocation, _MemoryPool::blocks, LockSemaphoreInfo(), MagickFalse, MaxBlocks, MaxSegments, memory_methods, _DataSegmentInfo::next, _DataSegmentInfo::previous, _MemoryPool::segment_pool, SegmentSize, SizeMask, and UnlockSemaphoreInfo().

Referenced by AcquireCoderCache(), AcquireColorCache(), AcquireConfigureCache(), AcquireCriticalMemory(), AcquireKernelBuiltIn(), AcquireLogCache(), AcquireMagicCache(), AcquireMatrixInfo(), AcquirePixelList(), AcquirePolicyCache(), AcquireQuantumMemory(), AddChildToXMLTree(), AddValueToSplayTree(), AppendValueToLinkedList(), Ascii85Initialize(), CheckImageColors(), Classify(), CloneKernelInfo(), ConvertPathToPolygon(), GetCubeInfo(), GetImageDynamicThreshold(), GetNodeInfo(), InitializeIntervalTree(), InsertValueInLinkedList(), InsertValueInSortedLinkedList(), ListFiles(), NewXMLTreeTag(), ParseInternalDoctype(), RenderHoughLines(), RenderMVGContent(), ResizeMagickMemory(), SetImageInfo(), and ThrowException().

◆ AcquireQuantumMemory()

MagickExport void* AcquireQuantumMemory ( const size_t  count,
const size_t  quantum 
)

Definition at line 533 of file memory.c.

References AcquireMagickMemory(), HeapOverflowSanityCheck(), and MagickFalse.

Referenced by AcquireContributionThreadSet(), AcquireFxInfo(), AcquireFxThreadSet(), AcquireHistogramThreadSet(), AcquireImageColormap(), AcquireMagickMatrix(), AcquirePixelCacheNexus(), AcquirePixelChannelMap(), AcquirePixelListThreadSet(), AcquirePixelThreadSet(), AcquirePolygonThreadSet(), AcquireQuantumPixels(), AcquireRandomInfoThreadSet(), AcquireResampleFilterThreadSet(), AcquireSignatureInfo(), AcquireString(), AcquireStringInfo(), AcquireUniqueSymbolicLink(), AcquireVirtualMemory(), AutoThresholdImage(), BalanceSplayTree(), Base64Decode(), Base64Encode(), BlobToStringInfo(), Classify(), ClassifyImageColors(), CloneDrawInfo(), CloneImage(), ClonePixelCacheOnDisk(), ClonePixelInfo(), ClutImage(), ColorDecisionListImage(), CompareImagesLayers(), ConfigureFileToStringInfo(), ConnectedComponentsImage(), ConstantString(), ContrastStretchImage(), ConvertLatin1ToUTF8(), ConvertPathToPolygon(), ConvertPrimitiveToPath(), ConvertUTF16ToUTF8(), CopyDelegateFile(), CreateMagickThreadKey(), CustomStreamToImage(), DeleteImages(), DeskewImage(), DistortImage(), DrawDashPolygon(), EqualizeImage(), EscapeParenthesis(), EscapeString(), ExpandFilenames(), ExportImagePixels(), FileToBlob(), FileToImage(), FileToXML(), GammaImage(), GaussJordanElimination(), GenerateCoefficients(), Get8BIMProperty(), GetCoderInfoList(), GetCoderList(), GetColorInfoList(), GetColorList(), GetCommandOptions(), GetConfigureInfoList(), GetConfigureList(), GetDelegateInfoList(), GetDelegateList(), GetExecutionPath(), GetEXIFProperty(), GetImageDepth(), GetImageDistortion(), GetImageDistortions(), GetImageDynamicThreshold(), GetImageFeatures(), GetImageHistogram(), GetImageMoments(), GetImagePerceptualHash(), GetImageStatistics(), GetImageViewException(), GetIPTCProperty(), GetLocaleInfoList(), GetLocaleList(), GetLocationStatistics(), GetLogInfoList(), GetLogList(), GetMagicInfoList(), GetMagickInfoList(), GetMagickList(), GetMagicList(), GetMimeInfoList(), GetMimeList(), GetNodeInfo(), GetPathComponents(), GetPolicyInfoList(), GetPolicyList(), GetThresholdMapFile(), GetTypeInfoList(), GetTypeList(), GetVirtualPixelCacheNexus(), GradientImage(), HuffmanDecodeImage(), HuffmanEncodeImage(), IdentifyImage(), ImageListToArray(), ImagesToBlob(), ImagesToCustomStream(), ImageToBlob(), ImageToCustomStream(), ImageToFile(), ImportImagePixels(), InitializeIntervalTree(), InjectImageBlob(), IterateOverSplayTree(), KapurThreshold(), LinearStretchImage(), ListFiles(), LZWEncodeImage(), MontageImageList(), MorphologyPrimitive(), MotionBlurImage(), NewXMLTree(), OptimalTau(), OptimizeLayerFrames(), OTSUThreshold(), PackbitsEncodeImage(), ParseEntities(), ParseInternalDoctype(), ParseKernelArray(), ParseProcessingInstructions(), ReduceImageColors(), RenderMVGContent(), RotationalBlurImage(), SampleImage(), ScaleImage(), ScaleSpace(), SegmentImage(), SetGrayscaleImage(), SetImageDepth(), SetStringInfoLength(), SetXMLTreeAttribute(), SortColormapByIntensity(), sRGBTransformImage(), StreamImagePixels(), StringInfoToHexString(), StringInfoToString(), StringToArgv(), StringToArrayOfDoubles(), StringToStrings(), TraceBezier(), TraceStrokePolygon(), TransformsRGBImage(), WaveImage(), and WaveletDenoiseImage().

◆ AcquireVirtualMemory()

MagickExport MemoryInfo* AcquireVirtualMemory ( const size_t  count,
const size_t  quantum 
)

Definition at line 571 of file memory.c.

References AcquireAlignedMemory(), AcquireQuantumMemory(), AcquireUniqueFileResource(), AlignedVirtualMemory, _MemoryInfo::blob, DestroyString(), _MemoryInfo::filename, GetMaxMemoryRequest(), GetPolicyValue(), HeapOverflowSanityCheck(), IOMode, _MemoryInfo::length, LocaleCompare(), MagickAssumeAligned, MagickCoreSignature, MagickFalse, MapBlob(), MapVirtualMemory, RelinquishUniqueFileResource(), RelinquishVirtualMemory(), ResourceLimitFatalError, _MemoryInfo::signature, ThrowFatalException, _MemoryInfo::type, UnalignedVirtualMemory, and virtual_anonymous_memory.

Referenced by AcquireQuantumPixels(), DespeckleImage(), FloodfillPaintImage(), GetCubeInfo(), LocalContrastImage(), and WaveletDenoiseImage().

◆ CopyMagickMemory()

MagickExport void* CopyMagickMemory ( void *  destination,
const void *  source,
const size_t  size 
)

Definition at line 697 of file memory.c.

◆ DestroyMagickMemory()

MagickExport void DestroyMagickMemory ( void  )

Definition at line 745 of file memory.c.

References ActivateSemaphoreInfo(), _DataSegmentInfo::allocation, _MagickMemoryMethods::destroy_memory_handler, _DataSegmentInfo::length, LockSemaphoreInfo(), MagickFalse, _DataSegmentInfo::mapped, memory_methods, _MemoryPool::number_segments, RelinquishSemaphoreInfo(), _MemoryPool::segments, UnlockSemaphoreInfo(), and UnmapBlob().

◆ GetMagickMemoryMethods()

MagickExport void GetMagickMemoryMethods ( AcquireMemoryHandler *  acquire_memory_handler,
ResizeMemoryHandler *  resize_memory_handler,
DestroyMemoryHandler *  destroy_memory_handler 
)

Definition at line 873 of file memory.c.

References _MagickMemoryMethods::acquire_memory_handler, _MagickMemoryMethods::destroy_memory_handler, memory_methods, and _MagickMemoryMethods::resize_memory_handler.

◆ GetMaxMemoryRequest()

MagickExport size_t GetMaxMemoryRequest ( void  )

Definition at line 904 of file memory.c.

References DestroyString(), GetPolicyValue(), MagickULLConstant, max_memory_request, and StringToSizeType().

Referenced by AcquireVirtualMemory(), and CheckPrimitiveExtent().

◆ GetVirtualMemoryBlob()

MagickExport void* GetVirtualMemoryBlob ( const MemoryInfo *  memory_info)

Definition at line 947 of file memory.c.

References _MemoryInfo::blob, MagickCoreSignature, and _MemoryInfo::signature.

Referenced by AcquireQuantumPixels(), DespeckleImage(), DestroyQuantumPixels(), FloodfillPaintImage(), GetCubeInfo(), GetQuantumPixels(), LocalContrastImage(), and WaveletDenoiseImage().

◆ HeapOverflowSanityCheck()

MagickExport MagickBooleanType HeapOverflowSanityCheck ( const size_t  count,
const size_t  quantum 
)

Definition at line 978 of file memory.c.

References MagickFalse, and MagickTrue.

Referenced by AcquireAlignedMemory(), AcquireQuantumMemory(), AcquireVirtualMemory(), and ResizeQuantumMemory().

◆ RelinquishAlignedMemory()

MagickExport void* RelinquishAlignedMemory ( void *  memory)

Definition at line 1016 of file memory.c.

Referenced by AdaptiveBlurImage(), AdaptiveSharpenImage(), DestroyCacheView(), DestroyContributionThreadSet(), DestroyKernelInfo(), DestroyPixelCacheNexus(), DestroyPixelList(), DestroyStreamInfo(), MotionBlurImage(), RelinquishCacheNexusPixels(), RelinquishPixelCachePixels(), RelinquishStreamPixels(), RelinquishVirtualMemory(), SelectiveBlurImage(), and WriteStreamImage().

◆ RelinquishMagickMemory()

MagickExport void* RelinquishMagickMemory ( void *  memory)

Definition at line 1053 of file memory.c.

References BlockFooter, BlockHeader, _MagickMemoryMethods::destroy_memory_handler, LockSemaphoreInfo(), memory_methods, NextBlock, PreviousBlock, PreviousBlockBit, SizeMask, SizeOfBlock, and UnlockSemaphoreInfo().

Referenced by access_utf8(), AcquireCoderCache(), AcquireFxInfo(), AcquireMagickMatrix(), AcquirePolygonThreadSet(), AcquireUniqueSymbolicLink(), AddPathToXMLTree(), AnnotateImage(), AutoThresholdImage(), BalanceSplayTree(), Base64Decode(), CanonicalXMLContent(), CheckPrimitiveExtent(), Classify(), ClearLinkedList(), ClonePixelCacheOnDisk(), ClutImage(), ColorDecisionListImage(), CompareImagesLayers(), ConnectedComponentsImage(), ContrastStretchImage(), ConvertPathToPolygon(), CopyDelegateFile(), CreateMagickThreadKey(), CustomStreamToImage(), DeleteImages(), DeleteMagickThreadKey(), DeleteNodeByValueFromSplayTree(), DeleteNodeFromSplayTree(), DeskewImage(), DestroyBlob(), DestroyCoderNode(), DestroyColorCube(), DestroyColorElement(), DestroyConfigureElement(), DestroyContributionThreadSet(), DestroyCubeInfo(), DestroyCustomStreamInfo(), DestroyDelegate(), DestroyDistributeCacheInfo(), DestroyDrawInfo(), DestroyEdge(), DestroyExceptionElement(), DestroyExceptionInfo(), DestroyFxInfo(), DestroyFxThreadSet(), DestroyHistogramThreadSet(), DestroyImage(), DestroyImageInfo(), DestroyImageView(), DestroyKernelInfo(), DestroyLinkedList(), DestroyLocaleNode(), DestroyLogElement(), DestroyMagicElement(), DestroyMagickNode(), DestroyMatrixInfo(), DestroyMimeElement(), DestroyMontageInfo(), DestroyPixelCache(), DestroyPixelCacheNexus(), DestroyPixelChannelMap(), DestroyPixelList(), DestroyPixelListThreadSet(), DestroyPixelStream(), DestroyPixelThreadSet(), DestroyPolicyElement(), DestroyPolygonInfo(), DestroyPolygonThreadSet(), DestroyQuantizeInfo(), DestroyQuantumInfo(), DestroyQuantumPixels(), DestroyRandomInfo(), DestroyRandomInfoThreadSet(), DestroyRegistryNode(), DestroyResampleFilter(), DestroyResampleFilterThreadSet(), DestroyResizeFilter(), DestroySignatureInfo(), DestroySplayTree(), DestroyStreamInfo(), DestroyString(), DestroyStringInfo(), DestroyStringList(), DestroyThresholdMap(), DestroyTimerInfo(), DestroyTokenInfo(), DestroyTypeNode(), DestroyXMLTree(), DestroyXMLTreeAttributes(), DestroyXMLTreeRoot(), DistortImage(), DrawDashPolygon(), DrawStrokePolygon(), EqualizeImage(), ExpandFilenames(), ExportImagePixels(), ExternalDelegateCommand(), FileToBlob(), FileToImage(), FileToXML(), fopen_utf8(), FreeNodes(), GammaImage(), GaussJordanElimination(), GenerateCoefficients(), GetConfigureOptions(), GetConfigurePaths(), GetDelegateCommand(), GetExecutionPath(), GetHostname(), GetImageDepth(), GetImageDistortion(), GetImageDistortions(), GetImageDynamicThreshold(), GetImageEntropy(), GetImageFeatures(), GetImageKurtosis(), GetImageMean(), GetImageMoments(), GetImagePerceptualHash(), GetImageStatistics(), GetLocaleOptions(), GetMagickHomeURL(), GetMultilineTypeMetrics(), GetMVGMacros(), GetNormalizedCrossCorrelationDistortion(), GetNumberColors(), GetPerceptualHashDistortion(), GetVirtualPixelCacheNexus(), GetXMLTreePath(), GetXMPProperty(), HuffmanDecodeImage(), HuffmanEncodeImage(), IdentifyImage(), ImagesToBlob(), ImagesToCustomStream(), ImageToBlob(), ImageToCustomStream(), ImageToFile(), ImportImagePixels(), InitializeIntervalTree(), InjectImageBlob(), InsertValueInSortedLinkedList(), InvokeDelegate(), IsOptionMember(), IterateOverSplayTree(), KapurThreshold(), LinearStretchImage(), ListCoderInfo(), ListColorInfo(), ListConfigureInfo(), ListDelegateInfo(), ListFiles(), ListLocaleInfo(), ListLogInfo(), ListMagicInfo(), ListMagickInfo(), ListMimeInfo(), ListPolicyInfo(), ListTypeInfo(), LoadCoderCache(), LoadColorCache(), LoadConfigureCache(), LoadDelegateCache(), LoadLocaleCache(), LoadLogCache(), LoadMagicCache(), LoadPolicyCache(), LoadTypeCache(), LogMagickEventList(), LZWEncodeImage(), MontageImageList(), MorphologyPrimitive(), MotionBlurImage(), open_utf8(), OptimalTau(), OptimizeLayerFrames(), OTSUThreshold(), PackbitsEncodeImage(), ParseInternalDoctype(), popen_utf8(), PreviewImage(), ReadInlineImage(), ReduceImageColors(), RelinquishMagickMatrix(), RelinquishVirtualMemory(), remove_utf8(), RemoveElementByValueFromLinkedList(), RemoveElementFromLinkedList(), RemoveLastElementFromLinkedList(), RemoveNodeByValueFromSplayTree(), RemoveNodeFromSplayTree(), rename_utf8(), RenderMVGContent(), RenderType(), ResetSplayTree(), ResizeMagickMemory(), ResizeQuantumMemory(), RotationalBlurImage(), SampleImage(), ScaleImage(), ScaleSpace(), SegmentImage(), SetGrayscaleImage(), SetImageArtifact(), SetImageDepth(), SetImageInfo(), SetImageOption(), SetImageProfileInternal(), SetImageProperty(), SetImageRegistry(), SetPolicyValue(), SortColormapByIntensity(), SparseColorImage(), sRGBTransformImage(), stat_utf8(), StreamImagePixels(), StringToArgv(), TraceBezier(), TraceStrokePolygon(), TransformsRGBImage(), WaveImage(), and WaveletDenoiseImage().

◆ RelinquishVirtualMemory()

MagickExport MemoryInfo* RelinquishVirtualMemory ( MemoryInfo *  memory_info)

Definition at line 1120 of file memory.c.

References AlignedVirtualMemory, _MemoryInfo::blob, _MemoryInfo::filename, _MemoryInfo::length, MagickCoreSignature, MapVirtualMemory, RelinquishAlignedMemory(), RelinquishMagickMemory(), RelinquishUniqueFileResource(), _MemoryInfo::signature, _MemoryInfo::type, UnalignedVirtualMemory, and UnmapBlob().

Referenced by AcquireVirtualMemory(), DespeckleImage(), DestroyCubeInfo(), DestroyQuantumPixels(), FloodfillPaintImage(), LocalContrastImage(), and WaveletDenoiseImage().

◆ ResetMagickMemory()

MagickExport void* ResetMagickMemory ( void *  memory,
int  byte,
const size_t  size 
)

Definition at line 1179 of file memory.c.

Referenced by GetPixelInfoPixel().

◆ ResetMaxMemoryRequest()

MagickPrivate void ResetMaxMemoryRequest ( void  )

Definition at line 1203 of file memory.c.

References max_memory_request.

◆ ResetVirtualAnonymousMemory()

MagickPrivate void ResetVirtualAnonymousMemory ( void  )

Definition at line 1226 of file memory.c.

References virtual_anonymous_memory.

Referenced by SetMagickSecurityPolicyValue().

◆ ResizeMagickMemory()

MagickExport void* ResizeMagickMemory ( void *  memory,
const size_t  size 
)

Definition at line 1278 of file memory.c.

References AcquireMagickMemory(), LockSemaphoreInfo(), MagickFalse, memory_methods, RelinquishMagickMemory(), _MagickMemoryMethods::resize_memory_handler, ResourceLimitFatalError, ThrowFatalException, and UnlockSemaphoreInfo().

Referenced by ResizeQuantumMemory().

◆ ResizeQuantumMemory()

MagickExport void* ResizeQuantumMemory ( void *  memory,
const size_t  count,
const size_t  quantum 
)

Definition at line 1338 of file memory.c.

References HeapOverflowSanityCheck(), MagickFalse, RelinquishMagickMemory(), and ResizeMagickMemory().

Referenced by AcquireImageColormap(), CanonicalXMLContent(), CheckImageColors(), CheckPrimitiveExtent(), ClassifyImageColors(), CloneString(), ConcatenateString(), ConvertPathToPolygon(), ConvertPrimitiveToPath(), ConvertUTF16ToUTF8(), EncodePredefinedEntities(), ExpandFilenames(), FileToBlob(), FileToXML(), ImagesToBlob(), ImageToBlob(), ListFiles(), NewXMLTree(), ParseEntities(), ParseInternalDoctype(), ParseProcessingInstructions(), RenderMVGContent(), SetBlobExtent(), SetStringInfoLength(), SetXMLTreeAttribute(), StringToStrings(), SubstituteString(), TranslateEvent(), TranslateFilename(), WriteBlob(), XMLTreeInfoToXML(), and XMLTreeTagToXML().

◆ SetMagickMemoryMethods()

MagickExport void SetMagickMemoryMethods ( AcquireMemoryHandler  acquire_memory_handler,
ResizeMemoryHandler  resize_memory_handler,
DestroyMemoryHandler  destroy_memory_handler 
)

Definition at line 1383 of file memory.c.

References _MagickMemoryMethods::acquire_memory_handler, _MagickMemoryMethods::destroy_memory_handler, memory_methods, and _MagickMemoryMethods::resize_memory_handler.

Variable Documentation

◆ max_memory_request

size_t max_memory_request = 0
static

Definition at line 169 of file memory.c.

Referenced by GetMaxMemoryRequest(), and ResetMaxMemoryRequest().

◆ memory_methods

MagickMemoryMethods memory_methods
static
Initial value:
=
{
(AcquireMemoryHandler) malloc,
(ResizeMemoryHandler) realloc,
(DestroyMemoryHandler) free
}
AcquireMemoryHandler
void *(* AcquireMemoryHandler)(size_t) magick_alloc_size(1)
Definition: memory_.h:29
DestroyMemoryHandler
void *(*)(* DestroyMemoryHandler)(void *)
Definition: memory_.h:30
ResizeMemoryHandler
void *(*)(*) *(* ResizeMemoryHandler)(void *, size_t) magick_alloc_size(2)
Definition: memory_.h:31

Definition at line 188 of file memory.c.

Referenced by AcquireMagickMemory(), DestroyMagickMemory(), GetMagickMemoryMethods(), RelinquishMagickMemory(), ResizeMagickMemory(), and SetMagickMemoryMethods().

◆ virtual_anonymous_memory

size_t virtual_anonymous_memory = 0
static

Definition at line 170 of file memory.c.

Referenced by AcquireVirtualMemory(), and ResetVirtualAnonymousMemory().