MagickExport CacheView *AcquireVirtualCacheView(const Image *image,
ExceptionInfo *exception)
{
CacheView
*restrict cache_view;
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
(void) exception;
cache_view=(CacheView *) MagickAssumeAligned(AcquireAlignedMemory(1,
sizeof(*cache_view)));
if (cache_view == (CacheView *) NULL)
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
(void) ResetMagickMemory(cache_view,0,sizeof(*cache_view));
cache_view->image=ReferenceImage((Image *) image);
cache_view->number_threads=GetOpenMPMaximumThreads();
if (GetMagickResourceLimit(ThreadResource) > cache_view->number_threads)
cache_view->number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
if (cache_view->number_threads == 0)
cache_view->number_threads=1;
cache_view->nexus_info=AcquirePixelCacheNexus(cache_view->number_threads);
cache_view->virtual_pixel_method=GetImageVirtualPixelMethod(image);
cache_view->debug=IsEventLogging();
cache_view->signature=MagickSignature;
if (cache_view->nexus_info == (NexusInfo **) NULL)
ThrowFatalException(CacheFatalError,"UnableToAcquireCacheView");
return(cache_view);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% C l o n e C a c h e V i e w %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% CloneCacheView() makes an exact copy of the specified cache view.
%
% The format of the CloneCacheView method is:
%
% CacheView *CloneCacheView(const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport CacheView *CloneCacheView(const CacheView *cache_view)
{
CacheView
*clone_view;
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
clone_view=(CacheView *) AcquireMagickMemory(sizeof(*clone_view));
if (clone_view == (CacheView *) NULL)
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
(void) ResetMagickMemory(clone_view,0,sizeof(*clone_view));
clone_view->image=ReferenceImage(cache_view->image);
clone_view->number_threads=cache_view->number_threads;
clone_view->nexus_info=AcquirePixelCacheNexus(cache_view->number_threads);
clone_view->virtual_pixel_method=cache_view->virtual_pixel_method;
clone_view->debug=cache_view->debug;
clone_view->signature=MagickSignature;
return(clone_view);
}