This is the mail archive of the
mailing list for the glibc project.
Re: [PATCH][BZ #15790] Have pthread_mutexattr_gettype mask out the elision bit.
- From: Cesar Philippidis <cesar at codesourcery dot com>
- To: Rich Felker <dalias at aerifal dot cx>, Andi Kleen <andi at firstfloor dot org>
- Cc: OndÅej BÃlka <neleai at seznam dot cz>, <libc-alpha at sourceware dot org>
- Date: Mon, 11 Nov 2013 08:06:20 -0800
- Subject: Re: [PATCH][BZ #15790] Have pthread_mutexattr_gettype mask out the elision bit.
- Authentication-results: sourceware.org; auth=none
- References: <5266B4C3 dot 3090106 at codesourcery dot com> <20131107121529 dot GA17527 at domone> <20131107175715 dot GM29695 at two dot firstfloor dot org> <20131108041730 dot GY24286 at brightrain dot aerifal dot cx>
On 11/7/13, 8:17 PM, Rich Felker wrote:
> On Thu, Nov 07, 2013 at 06:57:15PM +0100, Andi Kleen wrote:
>>> Andi, it is unclear that if this is desired behaviour, one argument
>>> againist could be that if user wants to clone mutex type like
>>> int tp;
>>> pthread_mutexattr_gettype(a1, &tp);
>>> pthread_mutexattr_settype(a2, tp);
>>> should it preserve elision or not?
>> Yes it should.
> Sorry, it can't. The interface contact is set by POSIX, not something
> for glibc to design.
I'm confused. Is it OK for pthread_mutexattr_gettype() mask out the non
portable elision bits, PTHREAD_MUTEX_NO_ELISION_NP and
PTHREAD_MUTEX_ELISON_NP, set by pthread_mutexattr_settype()?