Re: Trouble finding source of PBM error problem

• Subject: Re: Trouble finding source of PBM error problem
• From: Paul Danbold <email@hidden>
• Date: Mon, 23 Jun 2003 11:29:19 -0700

Thanks Paul,

I little too rambley on the previous message, here's what i've got:

- PrintJobMgr doesn't crash (it was due to bug in my PM, which caused -1
error when using usb PBM, but i fixed that, anyway with my PBM it never
gets there)

- PMB is loading, my UI works fine.

- it looks like my PM's CreatePrinterBrowserModuleInfo function isnt
getting called when my PBM opens, has its info dict been cached?

- after clicking the Add button, i get the -1 error *before* the PM is
called to get its tickets and PDE paths! could it be the because of the
selected printer array returned from my PBM?

my debug log:

(opened my PBM here)

LPR IOMGetConnectionInfo
-->LPR PBM Prologue
<--LPR PBM Prologue: result = 0
-->LPR PBM Terminate
<--LPR PBM Terminate
-->LPR PBM Prologue
<--LPR PBM Prologue: result = 0
-->LPR PBM Initialize
<--LPR PBM Initialize: result = 0
-->LPR PBM WorksetPrinters
<--LPR PBM WorksetPrinters: result = 0

(pressed Add button here)

-->LPR PBM GetSelectedPrinters
LPR PBM LPRBrowserView::GetSelectedPrinters
address dict:
==
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://
www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Address</key>
<string>10.1.2.4</string>
<key>Connection</key>
<string>Generic LPR</string>
<key>Host</key>
<string>10.1.2.4</string>
<key>Model</key>
<string>Stylus Photo 750</string>
<key>Printer URI</key>
<string>lpd://10.1.2.4</string>

<key>Queue</key>
<string></string>
</dict>
</plist>
==
dict to return from GetSelectedPrinters (after adding lookupref
and putting in a CFArray):
==
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://
www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>PrBrowser Selection Address</key>
<data>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</data>

<key>PrBrowser Selection Kind</key>
<string>lpr host</string>
<key>PrBrowser Selection Name</key>
<string>10.1.2.4</string>
</dict>
</plist>
==
LPR PBM LPRBrowserView::GetSelectedPrinters: result = 0
<--LPR PBM GetSelectedPrinters: result = 0
---------------------------------
-->CreatePrinterBrowserModuleInfo
kNonPSLPRConnection is supported for
model 0, BrowserInfoKey value: Stylus Photo 750, BrowserKindKey
value: PrintMagic Epson Stylus 750
<--CreatePrinterBrowserModuleInfo: result = 0

(got -1 error alert here)

-->LPR PBM WorksetPrinters
<--LPR PBM WorksetPrinters: result = 0


Any clue here? Could it be something wrong with what i'm returning from
GetSelectedPrinters?

Thanks so much. Have a good WWDC Paul, I wish I could be there this year.

-Pierre


On Fri, 20 Jun 2003 09:32:47 -0700, Paul Danbold <email@hidden> said:

Pierre,

It would help to see your PrintJobMgr crash log. Either send it to me
directly or cc the printing list if you think others will benefit.
First of all we need to find out if your IOM is being loaded and is
correctly identifying the location of your PBM. Next, is your PBM
being loaded successfully? After that PrintJobMgr calls your PM's
CreatePrinterBrowserModuleInfo and hopefully it identifies itself as
supporting your IOM. Later on, your PBM's GetSelectedPrinters finds
your printer and when you click the Add button in PrintCenter, we call
your PM to get its tickets and PDE paths. As you can see, there are
quite a few steps in queue creation, that's why the crash log will help.

-Paul


On Thursday, June 19, 2003, at 12:43 PM, Pierre Houston (by way of
Pierre Houston <email@hidden>) wrote:

Thanks Paul,

Yes this is Jaguar. I don't think I have printf's in the PBM, except
for
some fprintf's that go to a log file.

I've since seen your 2 messages to this list from February that talk
specifically about the -1 error. Sorry for not searching the archives
first (or just searching my saved mail, duh).

Anyway, I found that my PM was failing with a -1 error for any I/O. Its
CreatePrinterTickets function was crashing PrintJobMgr. (I knew I
needed
to debug that code). So it looks like another cause of the -1 error is
a
PrintJobMgr crash.

Correcting my PM code avoids the -1 error when using say the USB PBM,
but
my PBM still gets it. My PM's CreatePrinterTickets function isn't
getting
called, neither is its Initialize function, and Console doesn't report
that PrintJobMgr has crashed.

Is there a way to tell what PrintJobMgr is doing? Can I invoke it
manually under the similar conditions? Is this what the "PrintJobMgr
queue-name" usage is for? I tried renaming the executables in its
bundle
so PrintJobMgr_debug got used instead during a run of Print Center,
hoping to see a clue sent to Console. No dice.

Or perhaps its hasn't even gotten to PrintJobMgr yet and its not to
blame? Ah, top says differently. In my own logs, the only thing that I
can see happening at that time is a call to my PM's
CreatePrinterBrowserModuleInfo function. I'm confused, shouldn't this
have instead been called while initializing the PBM to gather the
lookup
specs of the supported PMs? %:-p

Thanks for your help.

-Pierre

P.S your message was dated Jan 3, 1970. Hey, why do we get 1970 now
instead of 1904? I like 1904 better, maybe I'll file a bug :-)

No need. I had some hardware problems earlier in the week.

On Sat, 3 Jan 1970 03:51:59 -0800, Paul Danbold <email@hidden>
said:

Pierre,

-1 usually means something other than the PrinterInfo ticket, the
JobTemplate and the PDE paths are being written to stdout during queue
creation. Have you checked there are no printf statements in your
PBM?
BTW I assume you are seeing this on Jaguar.

-Paul


On Tuesday, June 17, 2003, at 12:32 PM, Pierre Houston wrote:

Hi Bob,

On Tue, 17 Jun 2003 10:10:59 -0400, email@hidden
<email@hidden> said:

Pierre,

I saw this problem when I first began working on my PBM. While I
don't
remember for sure what caused this, I think it was because a had
written a PBM but not an IOM (since I planned on getting the PBM
part
working before doing the IOM). The IOM's GetConnectionInfo routine
must
return the path of the PBM relative the the IOM path.

Hope this helps.

Bob Maggi

Thanks Bob, but actually no, it doesn't :-) Yes I've already found
out
about the relative path to the PBM. And I found it somewhat
confusing,
but perhaps that's just me. I think this is how it goes:

- If IOM and PBM are siblings in the same parent directory, the
browser
path should be "../PBM.plugin"

- If the PBM is to be within the IOM's bundle (which seems
appropriate
to
me), say within a plugins directory, the browser path should be
"Contents/PlugIns/PBM.plugin"

- If the IOM is within in the PBM's bundle (which i originally
thought
made sense then changed my mind), say within contents/plugins or
something, I believe the browser path should be just "../../.."!

I believe these situations are all allowed, someone please correct me
if
I'm wrong.

I wasn't clear, but the error -1 I get is upon clicking the Add
pushbutton in the browser sheet while my PBM is showing, not Print
Center's Add button in toolbar. This is what I'm referring to when I
ask
"What exactly happens after the Add button is pressed?"

So can anyone give me a rundown of the calls made to PBM, IOM & PM
after
the browser sheet's Add button is pressed? Or anything in the print
system itself that would cause Print Center to report error -1?

Thanks,
Pierre

Hi printing list,

I'm once again working on a PBM. The LPR & USB samples from DTS are
very
useful, thanks Apple.

Anyway, Print Center generates an error alert, error code -1,
after I
press the Add button with my PBM (in fact, after a long delay after
pressing the Add button). I don't doubt the -1 comes from my code,
but
I'm having trouble finding it. I probably not looking at all the
entry
point functions called by Print Center, in either PBM, IOM or PM.
What
exactly happens after the Add button is pressed?

Or could possibly the -1 be coming from Print Center itself?? If so
what
might that mean?

Thanks a bunch.

--
Pierre Houston <mailto:email@hidden>
Senior Software Engineer Direct Ph: (604) 296-3635
Strydent Software, Inc. <http://www.strydent.com>
Suite 488 - 2608 Granville St. Office Ph: (604) 296-3600
Vancouver, BC, Canada V6H 3V3 Fax: (604) 296-3699

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