Mail Archives: cygwin/2006/02/21/06:26:13
On 21 February 2006 10:20, Alex Dupre wrote:
> Alex Dupre <sysadmin <at> alexdupre.com> writes:
>
>> Yes, I've read it before posting to the list, but I cannot see where it
>> explains why I should call a print function to get the signal handled.
>> And not every print function, sprintf() doesn't work, printf() with empty
>> string doesn't work, currently I succeded with printf() and putc() to
>> stdout and /dev/null (that's the workaround I'm using now, since I don't
>> want anything printed out). I'd like to know if there is another or more
>> appropriate function that I should call.
>
> Actually putc() wasn't working, it was the fopen/fclose on /dev/null to
> deliver the signal. Anyway, I found a better workaround, calling sleep(0)
> does the job. If you could tell me why a putc('.') doesn't work and a
> sleep(0) works, it'd be nice :-)
>
putc comes from newlib and is not cygwin-signal-mechanism-aware, whereas
(nano)sleep comes from cygwin and calls sig_dispatch_pending ();
cheers,
DaveK
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Can't think of a witty .sigline today....
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