[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: [PATCH] libpthread NOLOAD removal
> Here is my llatest patch for libpthread NOLOAD removal. It implements
> minimal mutex, condvar and rwlock operations in libc thread stubs, so
> that theses objects can be handled by both libc and libpthread after
> libpthread has been loaded by dlopen.
what "ptm->ptm_owner = (thr_t) -1" means?
> Performance hit has been evaluated: it is not significant for running
> NetBSD's build.sh. On a billion calls to gmtime(), I get a 1%
> performance hit.
> Note that we catch calls to pthread_create() for programs not linked
> with -lpthread and we abort, since we cannot reliabily support that for
> now. We could do it if we move the full mutex, condvar and rwlock
> operations from libthread to libc. Since that would bump library
> versions, I suggest it could be done in a second step, so that the first
> step (minimal operation in libc stubs) can be backported to netbsd-6.
> Emmanuel Dreyfus
Main Index |
Thread Index |