Re: [HACKERS] Current sources?

dg(at)illustra(dot)com (David Gould) writes:

> Try making the 's_lock_test' target in
> src/backend/storage/buffer/Makefile. It will let you be sure that
> spinlocks are working.

This is how it looks like here (NetBSD/sparc 1.3, GCC 1.7.2.2), with
the broken TAS support replaced with that from SparcLinux:

| barsoom# gmake s_lock_test
| gcc -I../../../include -I../../../backend -I/usr/local/include -O2 -pipe -Wall -Wmissing-prototypes -I../.. -DS_LOCK_TEST=1 -g s_lock.c -o s_lock_test
| s_lock.c: In function `main':
| s_lock.c:313: warning: implicit declaration of function `select'
| ./s_lock_test
| S_LOCK_TEST: this will hang for a few minutes and then abort
| with a 'stuck spinlock' message if S_LOCK()
| and TAS() are working.
|
| FATAL: s_lock(00004168) at s_lock.c:324, stuck spinlock. Aborting.
|
| FATAL: s_lock(00004168) at s_lock.c:324, stuck spinlock. Aborting.
| gmake: *** [s_lock_test] Abort trap (core dumped)
| gmake: *** Deleting file `s_lock_test'
| barsoom#

...and it did take a couple of minutes (didn't time it, though), so I
guess it works, right?

-tih
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