Feature #579

Implement memory mapping for Windows platforms

Added by Andreas Huggel 483 days ago. Updated 69 days ago.

Status:Closed Start:
Priority:Normal Due date:
Assigned to:Robin Mills % Done:

100%
Category:miscellaneous
Target version:0.19

Description

On Windows, there should be equivalent functions for mmap() and munmap() which can be used to implement memory mapping also for Windows in Exiv2::FileIo (basicio.cpp).

Additional information:

Memory mapping for UNIX-like systems was introduced with #475

Related issues

related to Exiv2 - Bug #634 Locking error on windows when updating a TIFF file with MemoryMapping enabled Closed 17 May 2009
related to Exiv2 - Feature #475 Performance: Don't read TIFF-based files completely Closed

Associated revisions

Revision 1797
Added by Robin Mills 297 days ago

#579: Implement Memory Mapping for Windows Platforms

This improves the performance of exiv2.exe on TIFF files about 5x

The MSVC branch adds mmap.cpp and mman.h - borrowed and slightly touched from KDE
- the contribution of KDE is acknowledged and respected (and changes documented)
- exv_msvc.h modified to support MM
- added support files include/sys to enable compilation on MSVC

Revision 1832
Added by Andreas Huggel 262 days ago

Removed r1799, r1797 from trunk (#634, #579)

Revision 1967
Added by Andreas Huggel 72 days ago

#579: Implemented mmap for Windows directly in FileIo and made that class use the Pimpl idiom (#510) to de-clutter the interface. Unrelated: Added EXV_MIN/MAX macros, allow iconv config in commercial version.

History

Updated by Andreas Huggel 447 days ago

  • Target version set to 1.0

Updated by Andreas Huggel 257 days ago

  • Target version changed from 1.0 to 0.19

Updated by Andreas Huggel 72 days ago

  • Status changed from Assigned to Resolved
  • % Done changed from 0 to 100

Updated by Andreas Huggel 69 days ago

  • Status changed from Resolved to Closed

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