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);
}
Exemple #2
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   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);
}