From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Sat, 8 Sep 2007 18:07:35 +0400 From: Alexey Tourbin To: ALT Linux Team development discussions Message-ID: <20070908140735.GB6051@solemn.turbinal> Mail-Followup-To: ALT Linux Team development discussions References: <20070908105219.GA6051@solemn.turbinal> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Ar8KwLu88Tj76bHi" Content-Disposition: inline In-Reply-To: Subject: Re: [devel] #12712 - nagios PL_perlio_mutex X-BeenThere: devel@lists.altlinux.org X-Mailman-Version: 2.1.9 Precedence: list Reply-To: ALT Linux Team development discussions List-Id: ALT Linux Team development discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Sep 2007 14:07:42 -0000 Archived-At: List-Archive: List-Post: --Ar8KwLu88Tj76bHi Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Sep 08, 2007 at 05:51:49PM +0400, Alex Myltsev wrote: > On 9/8/07, Alexey Tourbin wrote: > > =C7=CC=CF=C2=C1=CC=D8=CE=D9=CD=C5 =D0=C5=D2=C5=CD=C5=CE=CE=D9=C5 =CE=C1= =D3=C1=CD=CF=CD =C4=C5=CC=C5 =C2=D9=D7=C1=C0=D4 =C4=D7=D5=C8 =D4=C9=D0=CF= =D7 -- > > "D" =C9 "B" (data =C9 bss). =F2=C1=DA=CC=C9=DE=C9=C5 =CD=C5=D6=C4=D5 = =CE=C9=CD=C9 =D1 =CE=C5 =D3=CF=D7=D3=C5=CD =D0=CF=CE=C9=CD=C1=C0. > =F4=C9=D0 B =CC=C5=D6=C9=D4 =D7 =D3=C5=CB=C3=C9=C9 bss, =CF=C2=CC=C1=D3= =D4=D8 =D0=C1=CD=D1=D4=C9 =D0=D2=C9 =DA=C1=D0=D5=D3=CB=C5 =D0=D2=CF=C7=D2= =C1=CD=CD=D9 > =DA=C1=D0=CF=CC=CE=D1=C5=D4=D3=D1 =CE=D5=CC=D1=CD=C9. =F0=CF=DC=D4=CF=CD= =D5 =D3=C5=CB=C3=C9=C0 bss =CE=C5 =CE=D5=D6=CE=CF =CB=CC=C1=D3=D4=D8 =CE=C1= =C4=C9=D3=CB -- =D7=D3=A3 > =D2=C1=D7=CE=CF =D4=C1=CD =CE=D5=CC=C9. > =F4=C9=D0 D =CC=C5=D6=C9=D4 =D7 =D3=C5=CB=C3=C9=C9 .data =C9 =DE=C5=CD-= =D4=CF =D4=C1=CD =C9=CE=C9=C3=C9=C1=CC=C9=DA=C9=D2=D5=C5=D4=D3=D1, =CE=CF = =CE=C5 =CE=D5=CC=A3=CD. =EE=C1 =D4=C1=CB=CF=CD =D5=D2=CF=D7=CE=C5 =CB=D4=CF =D5=C7=CF=C4=CE=CF =D0= =CF=CE=C9=CD=C1=C5=D4. :) =F1 =CE=C5 =D0=CF=CE=C9=CD=C1=C0 =CB=C1=CB =D0=D2= =C9=D3=C8=CF=C4=C9=D4 =CB=CF=CD=D0=CF=CE=CF=D7=CB=C1 extern =D0=C5=D2=C5=CD=C5=CE=CE=D9=C8 =C9 = =CB=C1=CB=CF=CA "=D4=C9=D0" =D5 =CE=C9=C8 =D7 =D2=C5=DA=D5=CC=D8=D4=C1=D4= =C5 =D0=CF=CC=D5=DE=C1=C5=D4=D3=D1. =E9, =D7 =DE=C1=D3=D4=CE=CF=D3=D4=C9, =D3=D4=CF=C9=D4 =CC=C9 =D7=C5=DB=C1= =D4=D8 B-=D3=C9=CD=D7=CF=CC=D9 =CE=C1 symbol versioning, =C9 =D7 =CB=C1=CB=C9=C8 =C9=CD=C5=CE=CE=CF =D3=CC=D5=DE=C1=D1=C8. > =E5=D3=CC=C9, =CE=C1=D0=D2=C9=CD=C5=D2, =CE=C1=D0=C9=D3=C1=D4=D8: >=20 > int foo =3D 0; > int bar =3D 1; >=20 > =C9 =D3=CF=C2=D2=C1=D4=D8 DSO, =D4=CF =C9 =D0=CF=CC=D5=DE=C9=D4=D3=D1: >=20 > $ nm libdso.so | egrep '(foo|bar)' > 0000000000200700 D bar > 0000000000200708 B foo >=20 > =E1 =D0=CF=D4=CF=CD=D5 =DE=D4=CF =D7 =CF=C4=CE=CF=CD =CE=CF=CC=D8, =C1 = =D7 =C4=D2=D5=C7=CF=CD =CE=C5 =CE=CF=CC=D8. > =EE=CF =DC=D4=CF =D7=D3=A3 =D7 =CD=C1=CE=C1=C8 =CE=C1=D0=C9=D3=C1=CE=CF, = =DC=D4=CF =CE=C5=C9=CE=D4=C5=D2=C5=D3=CE=CF. =EB=D3=D4=C1=D4=C9 =D5 gcc =C5=D3=D4=D8 =CF=D0=C3=C9=D1 -fzero-initialized-= in-bss, =CB=CF=D4=CF=D2=C1=D1 =D7=CB=CC=C0=DE=C5=CE=C1 =D0=CF =D5=CD=CF=CC=DE=C1=CE=C9=C0. =F0=CF=DC=D4=CF=CD=D5 'foo =3D 0' =C9 = =CF=CB=C1=DA=D9=D7=C1=C5=D4=D3=D1 =D7 bss. > > $ grep PL_perlio_mutex sym > > nginx /usr/sbin/nginx B PL_perlio_mutex > > perl-base /usr/bin/perl5.8.8 U PL_perlio_mutex > > perl-base /usr/lib/libperl.so.5.8.8 B PL_perlio_mutex > > > > =E4=D2=D5=C7=C9=CD=C9 =D3=CC=CF=D7=C1=CD=C9, nagios =C9 nginx =CB=C1=CB= =C2=D9 "=D3=D3=D9=CC=C1=C0=D4=D3=D1" =CE=C1 =D0=C5=D2=C5=CD=C5=CE=CE=D5=C0= =D4=C9=D0=C1 > > "B" =D7 libperl.so.5.8, =CE=CF =DC=D4=C1 =D3=D3=D9=CC=CB=C1 =D0=CF=DE= =C5=CD=D5-=D4=CF =C9=CD=C5=C5=D4 =D4=C9=D0 "B", =C1 =CE=C5 "U". > =F0=D2=CF=D7=A3=CC =DC=CB=D3=D0=C5=D2=C9=CD=C5=CE=D4. =F3=C4=C5=CC=C1=CC = =CB =D7=D9=DB=C5=D5=D0=CF=CD=D1=CE=D5=D4=CF=CA =C2=C9=C2=CC=C9=CF=D4=C5=CB= =C5 =CB=CC=C9=C5=CE=D4=C1: >=20 > $ cat user.c > #include > extern int foo; > void main() > { printf("%x\n", &foo; } > $ gcc -c user.c > $ nm user.o | grep foo > U foo > $ >=20 > =F0=CF=CB=C1 =D7=D3=A3 =CE=CF=D2=CD=C1=CC=D8=CE=CF. =EE=CF =D7=CF=D4 >=20 > $ gcc -L. user.o -o user -ldso > $ nm user | grep foo > 0000000000600a20 B foo >=20 > =F0=CF=C8=CF=D6=C5, =D0=D2=C9 =CC=C9=CE=CB=CF=D7=CB=C5 ld =DA=C1=CD=C5= =D4=C9=CC, =DE=D4=CF foo =D7=D3=A3 =D2=C1=D7=CE=CF =D7 bss, =C9 =CD=CF=D6= =CE=CF =C5=C7=CF > =C9 =DA=C4=C5=D3=D8 =DA=C1=D0=C9=C8=CE=D5=D4=D8 =D7 bss. =FA=C1=CD=C5=DE= =C1=D4=C5=CC=D8=CE=CF, =DE=D4=CF =D0=D2=C9 =DA=C1=D0=D5=D3=CB=C5 ./user > =C2=C9=C2=CC=C9=CF=D4=C5=CB=C1 libdso =D7=CF=CF=C2=DD=C5 =CE=C5 =C7=D2= =D5=DA=C9=D4=D3=D1: =CE=C5=CF=D0=D2=C5=C4=C5=CC=A3=CE=CE=D9=C8 =D3=C9=CD=D7= =CF=CC=CF=D7 =C9=DA =CE=C5=A3 > =D7 ./user =CE=C5=D4=D5. =F7=CF=D4 =DA=C4=C5=D3=D8 =D5 =CD=C5=CE=D1 =C5=D3=D4=D8 =C2=CF=CC=D8=DB=C9= =C5 =D3=CF=CD=CE=C5=CE=C9=D1. =F0=CF=DE=C5=CD=D5 =D6=C5 =CF=CE=C1 "=D7=CF= =CF=C2=DD=C5 =CE=C5 =C7=D2=D5=DA=C9=D4=D3=D1"? =F0=CF=D0=D2=CF=C2=D5=CA =D3=C4=C5=CC=C1=D4=D8 = =C4=D2=D5=C7=D5=C0 =C2=C9=C2=CC=C9=CF=D4=C5=CB=D5 libdso =C2=C5=DA =D3=C9= =CD=D7=CF=CC=C1 foo =C9 =D0=CF=C4=D3=D5=CE=D5=D4=D8 =C5=A3 =DE=C5=D2=C5=DA LD_LIBRARY_PATH = =D5=D6=C5 =D3=CB=CF=CD=D0=C9=CC=C9=D2=CF=D7=C1=CE=CE=CF=CD=D5 user. user =CE=C5 =DA=C1=C7=D2=D5=DA=C9=D4=D3=D1. =F7 =D4=CF=CD-=D4=CF =D7=D3=D1 =C9 =D0=D2=CF=C2=CC=C5=CD=C1 =D3 #12712. = =E5=D3=CC=C9 =C2=D9 =D3=C9=CD=D7=CF=CC "B PL_perlio_mutex" =C2=D9=CC =D3=C1=CD=CF=C4=CF=D3=D4=C1=D4=CF=DE=C5=CE, =D4=CF =CE=C9=CB=C1= =CB=CF=CA =CF=DB=C9=C2=CB=C9 =CE=C5 =D7=CF=DA=CE=C9=CB=CC=CF =C2=D9. =E4=D2=D5=C7=C9=CD=C9 =D3=CC=CF=D7=C1=CD=C9, =CB=C1=C5=D6=C5=D4=D3=D1, =D3= =D5=DD=C5=D3=D4=D7=D5=C0=D4 =CB=C1=CB =C2=D9 =D0=CF=CC=CE=CF=C3=C5=CE=CE=D9= =C5 B-=CF=D0=D2=C5=C4=C5=CC=C5=CE=C9=D1 =C9 =CE=C5=D0=CF=CC=CE=CF=C3=C5=CE=CE=D9=C5 extern B-=D3=D3=D9=CC=CB=C9. =EE= =C1=D5=DE=CE=C1=D1 =D4=C5=CF=D2=C9=D1 =C2=CC=C9=CE. > =E1 =C5=D3=CC=C9 =C5=A3 =D7=D3=A3-=D4=C1=CB=C9 =DA=C1=C7=D2=D5=DA=C9=D4= =D8, =D4=CF =D7 =C2=C9=C2=CC=C9=CF=D4=C5=CB=C5 =C9 =D7 > =D0=D2=C9=CC=CF=D6=C5=CE=C9=C9 =D7=D3=A3 =D2=C1=D7=CE=CF =C2=D5=C4=C5=D4 = =CF=C2=DD=C9=CA foo, =D0=CF=D4=CF=CD=D5 =DE=D4=CF =D3=C5=CB=C3=C9=D1 bss = =D7=D2=CF=C4=C5 =CB=C1=CB > =CF=C2=DD=C1=D1 =CE=C1 =D7=D3=A3 =D0=D2=C9=CC=CF=D6=C5=CE=C9=C5. >=20 > > =FA=C1=CD=C5=DE=D5, =DE=D4=CF =D3=C1=CD perl =D3=D3=D9=CC=C1=C5=D4=D3= =D1 =CE=C1 PL_perlio_mutex =DE=C5=D2=C5=DA "U". > =E1 =D7=CF=D4 =DC=D4=CF-=D4=CF =C9 =CE=C5=D0=CF=CE=D1=D4=CE=CF :). =F0=CF= =DE=C5=CD=D5, =D0=CF=DE=C5=CD=D5 =D7 =C4=C1=CE=CE=CF=CD =D3=CC=D5=DE=C1=C5 = =DC=D4=D5 =D3=D3=D9=CC=CB=D5 > =CE=C5 =DA=C1=D0=C9=C8=CE=D5=CC=C9 =D7 bss?.. =F7=CF=D4-=D7=CF=D4. --Ar8KwLu88Tj76bHi Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQFG4qymfBKgtDjnu0YRAmUPAJ0frAZXx36FofMyWe/hynCURN+9/wCdFlHn LW1XANSZPf+wYdLIa8h0q+E= =64A5 -----END PGP SIGNATURE----- --Ar8KwLu88Tj76bHi--