From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael Kerrisk (man-pages)" Subject: Re: [PATCH] mallinfo.3: ATTRIBUTES: Note function that is not thread-safe Date: Fri, 11 Sep 2015 12:06:53 +0200 Message-ID: <55F2A7BD.3070308@gmail.com> References: <1440411596-2566-1-git-send-email-zenglg.jy@cn.fujitsu.com> <1440411596-2566-5-git-send-email-zenglg.jy@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1440411596-2566-5-git-send-email-zenglg.jy-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Zeng Linggang Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org On 08/24/2015 12:19 PM, Zeng Linggang wrote: > The marking matches glibc marking. > The marking of functions in glibc is: > - mallinfo: MT-Unsafe init const:mallopt Applied! Thanks, Zeng Linggang. Cheers, Michael > Signed-off-by: Zeng Linggang > --- > man3/mallinfo.3 | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/man3/mallinfo.3 b/man3/mallinfo.3 > index 7797169..e6661d1 100644 > --- a/man3/mallinfo.3 > +++ b/man3/mallinfo.3 > @@ -107,6 +107,31 @@ This is the maximum number of bytes that could ideally > .BR malloc_trim (3). > .\" .SH VERSIONS > .\" Available already in glibc 2.0, possibly earlier > +.SH ATTRIBUTES > +For an explanation of the terms used in this section, see > +.BR attributes (7). > +.TS > +allbox; > +lb lb lbw28 > +l l l. > +Interface Attribute Value > +T{ > +.BR mallinfo () > +T} Thread safety MT-Unsafe init const:mallopt > +.TE > + > +.BR mallinfo () > +would access some global iternal objects. If modify them with non-atomically, > +may get inconsistent results. > +The identifier > +.I mallopt > +in > +.I const:mallopt > +mean that > +.BR mallopt () > +would modify the global iternal objects with atomics, that make sure > +.BR mallinfo () > +is safe enough, others modify with non-atomically maybe not. > .SH CONFORMING TO > This function is not specified by POSIX or the C standards. > A similar function exists on many System V derivatives, > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html