LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
August 2007
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2007.08.09 12:07 "Error handling & threading", by John Aldridge
In a multi-threaded application, it can be a nuisance that the handlers
set by TIFFSetErrorHandler[Ext] & TIFFSetWarningHandler[Ext] are static
variables.
Would there be any sympathy for adding a pair of such handler function
pointers to the TIFF structure? I suppose we'd need to add new versions
of the
TIFFOpen, TIFFOpenW, TIFFFdOpen, TIFFClientOpen
functions which takes such function pointers as arguments and fill them
into the returned TIFF structure. The existing open functions could just
default them to the current TIFFErrorExt and TIFFWarningExt functions.
Then all calls to TIFFErrorExt and TIFFWarningExt in the library could
be replaced by one of
tiff->tif_errorProc (...)
tiff->tif_warningProc (...)
These changes would allow applications to establish per-TIFF strcture
error policy without upsetting existing code.
--
Cheers,
John