freebsd-src/tools/build/options/WITHOUT_PTHREADS_ASSERTIONS
Greg Becker 642cd51102 libthr: Add src.conf variable WITHOUT_PTHREADS_ASSERTIONS
This patch fixes a bug which prevents building libthr without
_PTHREADS_INVARIANTS defined. The default remains to build libthr
with -D_PTHREADS_INVARIANTS. However, with this patch, if one builds
libthr with WITHOUT_PTHREADS_ASSERTIONS=true then the latency to
acquire+release a default pthread mutex is reduced by roughly 5%, and a
robust mutex by roughly 18% (as measured by a simple synthetic test on a
Xeon E5-2697a based machine).

Reviewed by:	jhb, kib, mjg
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D40900
2023-07-07 04:45:09 +03:00

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Disable debugging assertions in pthreads library.