[Zope-dev] Zope crash in select_trigger

[Anthony Baxter]

One of the uglies we found was that an extension did a os.popen() or
suchlike, and the sigchild was getting delivered to the main thread -
this was hitting the select at a bad place and causing brokenness.

The patch we were using was something like the following (this is
against ZServer/medusa/asyncore.py)

hth,
Anthony
--- asyncore.py 2000/01/11 09:33:18     1.1
+++ asyncore.py 2000/05/18 03:48:19     1.2
@@ -52,7 +52,16 @@
                        if s.writable():
                                w.append (s)
 =

-               (r,w,e) =3D select.select (r,w,e, timeout)
+               try:
+                   (r,w,e) =3D select.select (r,w,e, timeout)
+                   # on solaris, something causes a signal to get here
+                   # sometimes - sigpipe? sigchld? stupid truss doesn't
+                   # say - so this is the approach we take. ow.
+               except KeyboardInterrupt:
+                   raise # convenience when running interactively
+               except:
+                   print "select interrupted!"
+                   return
 =

                for x in r:
                        try:




>>> Andre Schubert wrote
> Hi,
> =

> I'am using DA's especially the ZPsycopgDA.
> We use our DB very much.
> We have change from ZPygres to ZPsycopg the last month, but the errors
> always occur.
> =

> question: do have any other problems with Zope-DAs, i had one with
> DB-Authentication???
> =

> thanks as
> =

> Dario Lopez-K=E4sten schrieb:
> > =

> > From: "Andre Schubert" <andre.schubert@geyer.kabeljournal.de>
> > > our Zope has the same problem, he dies unexpectly with Error-Code 1=
3.
> > > Can i use the pymalloc-hint for me... RedHat 6.2 Immunix and Zope 2=
=2E3.3
> > > and python 1.5.2.
> > =

> > the --without-pymalloc thing is only relevant to Python 2.1, IIRC, th=
us onl
y
> > if you use newr Zopes.
> > =

> > A question: you that are experiencing these problems, are you using d=
atabas
e
> > adapters?
> > if so, what adapters? How much do you make use of them?
> > =

> > > And are there some docs or how-tos about the pymalloc-hint??????
> > =

> > the INSTALL doc in the Python src has some info. I got help from Stev=
a A wh
o
> > pointed me in the right direction.
> > =

> > /dario
> > =

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> =

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> =


-- =

Anthony Baxter     <anthony@interlink.com.au>   =

It's never too late to have a happy childhood.