[PATCH] workaround for sigproc_init

Christopher Faylor cgf-use-the-mailinglist-please@cygwin.com
Sat Jul 30 21:05:00 GMT 2011

On Fri, Jul 29, 2011 at 08:41:10PM +0900, jojelino wrote:
>As sigproc_init is called during dll initialization, wait_sig thread is 
>not created as soon as possible.(this is known in msdn createthread 
>reference. http://msdn.microsoft.com/en-us/library/ms682453(v=vs.85).aspx)
>And then wait_sig starts to wake up as sig_dispatch_pending enters 
>waitforsingleobject. then main thread stops for few ms. and it shows 
>poor performance.

Incidentally, the intent of the now-defunct wincap
wincap.has_buggy_thread_startup was to avoid creating wait_sig during
thread startup, moving it to dll_crt0_1() which is the code that
eventually calls main().

(This was all rehashed back in August/September 2010)

Although I didn't fiddle with that myself, Corinna reported that having
the value set had no effect in her test cases so I don't think your
analysis here is 100% correct.


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