I added this assertion in 4.0. It happens if you call DmReleaseRecord when
the record isn't busy. You _should_ call DmReleaseRecord after DmGetRecord
and DmNewRecord because these functions mark the record as busy. You
_shouldn't_ call DmReleaseRecord after DmQueryRecord because it doesn't mark
the record as busy.
Note that "busy" is not the same as "locked" or "dirty".
There is still no assertion that the record is busy when it's being modified
though. So you can DmWrite to a pointer you get from locking a handle
returned by DmQueryRecord, and Palm OS won't complain.
For a somewhat-related discussion in the archives, see:
http://www.escribe.com/computing/pcpqa/index.html?by=OneThread&t=OS%204.0dr4
%20-%20DataMgr.c%2C%20Line%3A6915%2C%20Record%20isn%27t%20busy
<placeholder for the usual multi-line URL warning>
You should be aware that the debugger may point to the line after the
currently executing function in some cases. This may or may not be relevant.
--
Danny @ Palm
-----Original Message-----
From: Scott Herman [mailto:[EMAIL PROTECTED]]
Sent: Friday, July 13, 2001 10:40 AM
To: Palm Developer Forum
Subject: DmQueryRecord problem on Color 4.0 ROM in POSE
I have a program which accesses a database for reading
only. I read records using DmQueryRecord() and then
MemHandleLock() the returned handle. When I test this
code on the emulator using 4.0 color ROM images, I get
an error that says, "DataMgr.c line 7057, Record isn't
busy".
Is this a bug or truly an error condition? Shouldn't I be
to lock the handle of a retrieved record, whether it came
from DmGetRecord() or DmQueryRecord()? If not, why not?
... and where might this be documented?
I've searched the archives and can't seem to find anything
on this. I can't be the only one who has run into this...
...or can I?
Any insight would be appreciated.
TIA
Scott Herman
Yale New Haven Hospital
Department of Lab Medicine
20 York Street
New Haven, Ct. 06504
(203) 688-2449
[EMAIL PROTECTED]
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