svn commit: r218414 - in head: include lib/libc/include
lib/libthr lib/libthr/thread share/man/man3 sys/sys
jkim at FreeBSD.org
Mon Feb 7 23:29:13 UTC 2011
On Monday 07 February 2011 06:12 pm, Garrett Cooper wrote:
> On Mon, Feb 7, 2011 at 1:26 PM, Jung-uk Kim <jkim at freebsd.org>
> > Author: jkim
> > Date: Mon Feb �7 21:26:46 2011
> > New Revision: 218414
> > URL: http://svn.freebsd.org/changeset/base/218414
> > Log:
> > �Introduce a non-portable function pthread_getthreadid_np(3) to
> > retrieve �calling thread's unique integral ID, which is similar
> > to AIX function of �the same name. �Bump __FreeBSD_version to
> > note its introduction.
> Stupid question: how is this different from pthread_self() ?
> Isn't the pthread_t value returned unique across the system, or is
> it relative to the process somehow?
pthread_self(3) returns an opaque type pthread_t, e.g.,
pthread_equal(3) must be used to compare two thread IDs.
pthread_getthreadid_np(3) returns an integral type int, which is
actually td_tid of the calling thread for libthr(3).
Please see the following discussion:
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