signal handler priority issue

[David Xu]

Sean McNeil wrote:

>Sorry for top-posting, but it may be easier to read this way....
>
>The program below has an optimization bug in that done isn't declare
>volatile.  With that fixed, it works just fine.  I've been attempting to
>get boehm-gc working and it seems OK with libc_r, but fails with
>libpthread.  It is essentially doing what the program below does, but
>for some reason it gets stuck.  Has anyone else been experimenting with
>boehm-gc?
>
>Also, it would really help if I had a debugger that worked with kse
>threads.  How is that going?  Tracking down pthread issues right now has
>been difficult with the current debugger.  Can anyone throw some patches
>my way that may help?
>  
>
Please try the patch:
http://people.freebsd.org/~davidxu/kse/thr_sigsuspend.c.diff

the patch is for file /usr/src/lib/libpthread/thread/thr_sigsuspend.c,
I believe I caught a bug in the sigsuspend(), thread
should scan pending signals first, only when there is
no pending signal in wait set,  the thread can sleep.

David Xu