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Bill Lorensen authored
This is a fix for: vtk/vtk#14310 Windows applications that run for a long time report that rendered objects do not change. This is because the modified time on a Windows system is 32 bits. This causes overflows that defeat the modified time mechanism. This patch defines a new type, vtkMTimeType that is 64 unsigned integer regardless of the architecture. A mechanism to provide backward compatibility is introduced. The preprocessor define "VTK_HAS_MTIME_TYPE" can be used in applications that must build against VTK versions that use the "unsigned long" type for MTime's. Methodology used to find MTime occurences: 1) Identify files as follows: git grep "unsigned long" | grep ime | cut -d":" -f1,1 | sort | uniq 2) Hand edit each of those files replacing "unsigned long" with "vtkMTimeType" where appropriate. 3) Temporarily change typedef for vtkMTimeType to "double" to detect missing conversions
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