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I've written a thin C++ wrapper around 3.6.1 tifflib, primarily because I'd
like to coerce it to throw C++ exceptions when library methods fail. What
I'm doing is passing a function to TIFFSetErrorHandler that constructs and
throws a C++ exception. I have a few questions about this:

* Is it guaranteed that any time a TIFF library method fails that the error
handler will get called?
* Is it guaranteed that any time a TIFF library method succeeds that the
error handler will NOT get called?
* Is allocated memory always cleaned up before the library calls the error
handler method (i.e. will there be leaks if I throw an exception from within
the error handler)? If it's not, I could throw exceptions after testing the
return code from the TIFF library methods rather than from within the error
handler method.
* Am I reinventing the wheel? Is there a well-tested, publicly available and
free C++ wrapper for tifflib?

Thanks for your help.

Eric Fieleke


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	LibTiff Mailing List TIFF and LibTiff Mailing List Archive June 2004 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 2004.06.28 13:18 "Throwing C++ exceptions from custom error handler", by Eric Fieleke 2004.06.29 14:22 "Re: Throwing C++ exceptions from custom error handler", by Eric Fieleke 2004.07.01 14:04 "Re: Throwing C++ exceptions from custom error handler", by Eric Fieleke 2004.07.03 10:30 "Re: Throwing C++ exceptions from custom error handler", by Andrey Kiselev 2004.06.28 13:18 "Throwing C++ exceptions from custom error handler", by Eric Fieleke I've written a thin C++ wrapper around 3.6.1 tifflib, primarily because I'd like to coerce it to throw C++ exceptions when library methods fail. What I'm doing is passing a function to TIFFSetErrorHandler that constructs and throws a C++ exception. I have a few questions about this: * Is it guaranteed that any time a TIFF library method fails that the error handler will get called? * Is it guaranteed that any time a TIFF library method succeeds that the error handler will NOT get called? * Is allocated memory always cleaned up before the library calls the error handler method (i.e. will there be leaks if I throw an exception from within the error handler)? If it's not, I could throw exceptions after testing the return code from the TIFF library methods rather than from within the error handler method. * Am I reinventing the wheel? Is there a well-tested, publicly available and free C++ wrapper for tifflib? Thanks for your help. Eric Fieleke

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2004.06.28 13:18 "Throwing C++ exceptions from custom error handler", by Eric Fieleke