From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Kerrisk Subject: Re: [PATCH] drand48.3: ATTRIBUTES: Note functions that are not thread-safe Date: Tue, 21 May 2013 13:15:51 +0200 Message-ID: <519B5767.5050203@gmail.com> References: <1369027980-11810-1-git-send-email-penght@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1369027980-11810-1-git-send-email-penght-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> Sender: linux-man-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Peng Haitao Cc: carlos-v2tUB8YBRSi3e3T8WW9gsA@public.gmane.org, aoliva-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-man@vger.kernel.org On 05/20/13 07:33, Peng Haitao wrote: > The functions drand48(), erand48(), lrand48(), nrand48(), > mrand48(), jrand48(), srand48(), seed48() and lcong48() are > not thread safe. > > Signed-off-by: Peng Haitao Thanks, Peng. Applied in my local branch for this work. Cheers, Michael > --- > man3/drand48.3 | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/man3/drand48.3 b/man3/drand48.3 > index 3dad8fc..d65ae3d 100644 > --- a/man3/drand48.3 > +++ b/man3/drand48.3 > @@ -201,6 +201,21 @@ has been called, a subsequent call to either > or > .BR seed48 () > will restore the standard values of \fIa\fP and \fIc\fP. > +.SH ATTRIBUTES > +.SS Multithreading (see pthreads(7)) > +The > +.BR drand48 (), > +.BR erand48 (), > +.BR lrand48 (), > +.BR nrand48 (), > +.BR mrand48 (), > +.BR jrand48 (), > +.BR srand48 (), > +.BR seed48 (), > +and > +.BR lcong48 () > +functions use a global state of the random number generator, > +so they are not thread-safe. > .SH CONFORMING TO > SVr4, POSIX.1-2001. > .SH NOTES > -- 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