2010.03.02 16:55 "Re: [Tiff] Patch for tif_unix.c", by Toby Thain

On 2-Mar-10, at 11:14 AM, Bob Friesenhahn wrote:

On 2-Mar-10, at 9:53 AM, Scott Ribe wrote:

Unless I'm missing something.

Yes, generally the correct response to EINTR is to retry, because it is simply the result of the kernel dealing with a signal, and not any kind of actual I/O failure.

Right, but what was the intention of the signal?

That is the crux of the matter. An application which handles signals would need to have a way to abort all I/O loops if it wants to quit (e.g. if the user hit ^C). Otherwise the program hangs and the user becomes annoyed.

That was my line of thinking.

--Toby

Libtiff does not include such smarts. Everything becomes more challenging if the application is threaded.

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