Date: Wed, 25 Jan 2006 21:49:34 +0100 From: Jose Marcio Martins da Cruz <Jose-Marcio.Martins@ensmp.fr> To: freebsd-hackers@freebsd.org Subject: Re: Changes from 5.2.1 to 5.3 (theads / signal handling) Message-ID: <43D7E45E.8070103@ensmp.fr> In-Reply-To: <43D7C786.1090803@elischer.org> References: <43D74F91.2090009@ensmp.fr> <43D7C786.1090803@elischer.org>
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Julian Elischer wrote:
> Jose Marcio Martins da Cruz wrote:
>=20
> a new threading library.
Hmmmm.
Here are my compile flags :
CPPFLAGS : only some -I and -D flags
CFLAGS : -D_THREAD_SAFE -pthread
LDFLAGS : -lmilter -lkvm -lm -lpthread
>=20
> have you tried 6.0?
Yes. It presents the same behaviour. Either way, I've found it with 6.0, =
and=20
tried back with previous versions till find when the change took place.
> also, does the child do an exec() after forking?
No. The child gets out the father loop and calls another initialisation f=
unction.
As It seemed to me that all father's threads are stopped in the forked pr=
ocess,=20
this seemed to me not be a problem. Am I right ?
The signal handler thread is launched by the following sequence of instru=
ctions.
sigemptyset(&set);
sigaddset(&set, SIGHUP);
sigaddset(&set, SIGTERM);
sigaddset(&set, SIGINT);
sigaddset(&set, SIGUSR1);
sigaddset(&set, SIGUSR2);
if ((r =3D pthread_sigmask(SIG_BLOCK, &set, NULL)) !=3D 0)
{
errno =3D r;
LOG_SYS_ERROR("Couldn't mask signals");
}
if ((r =3D pthread_create(&tid, NULL, filter_signal_handler, NULL)) !=3D=
0)
LOG_SYS_ERROR("Error launching filter_signal_handler");
Thanks for your help.
Jos=E9-Marcio
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