Qt exception thrown from an event handler

Bandgeek · 03-25-2012, 01:27 PM

Last night I left Calibre importing a big collection of books. This morning Calibre was no longer running and when I try to start it up I get a Visual C++ runtime error. Unfortunately the error window is blank and doesn't tell me what the error is.

I deleted the last few dozen books that were added to the library thinking one of them might have hung it up, but that didn't help either.

I ran in debug mode and this is what I got.

C:\Users\Lenny>calibre-debug -g
Starting up...
Traceback (most recent call last):
File "site-packages\calibre\gui2\library\models.py", line 319, in sort
File "site-packages\calibre\gui2\library\models.py", line 327, in _sort
File "site-packages\calibre\library\caches.py", line 1013, in sort
File "site-packages\calibre\library\caches.py", line 1033, in multisort
File "site-packages\calibre\library\caches.py", line 1067, in __call__
File "site-packages\calibre\library\caches.py", line 1073, in itervals
File "site-packages\calibre\library\caches.py", line 200, in __getitem__
File "site-packages\calibre\library\database2.py", line 925, in get_metadata
File "site-packages\calibre\ebooks\metadata\book\base.py", line 107, in __init
__
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 163, in deepcopy
File "copy.py", line 228, in _deepcopy_list
MemoryError
Unhandled exception in thread started by <bound method DeviceManager.__bootstrap
of <DeviceManager(Thread-6, stopped daemon 5928)>>
Traceback (most recent call last):
File "threading.py", line 503, in __bootstrap
File "threading.py", line 543, in __bootstrap_inner
MemoryError
Traceback (most recent call last):
File "site-packages\calibre\gui2\library\models.py", line 319, in sort
File "site-packages\calibre\gui2\library\models.py", line 327, in _sort
File "site-packages\calibre\library\caches.py", line 1013, in sort
File "site-packages\calibre\library\caches.py", line 1033, in multisort
MemoryError
Qt has caught an exception thrown from an event handler. Throwing
exceptions from an event handler is not supported in Qt. You must
reimplement QApplication::notify() and catch all exceptions there.

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

Any ideas?

kovidgoyal · 03-25-2012, 04:54 PM

Post the metadata.db from your calibre library

Bandgeek · 03-25-2012, 08:09 PM

The DB is like 170MB, not sure if VBB will let me upload that.

I've been doing some digging, it looks like it malfunctions when it hits about 2GB of ram used by the main Calibre process. From what I'm reading this is the limit for a 32 bit program, unless there's a workaround I don't know about?

theducks · 03-25-2012, 11:01 PM

Quote:

Originally Posted by Bandgeek

The DB is like 170MB, not sure if VBB will let me upload that.

I've been doing some digging, it looks like it malfunctions when it hits about 2GB of ram used by the main Calibre process. From what I'm reading this is the limit for a 32 bit program, unless there's a workaround I don't know about?

170M

Are all your comments sections, really long winded

I have 4000 books and Metadata.db is 12.5M

kovidgoyal · 03-25-2012, 11:56 PM

That will be the cause of the error. It sounds like you somehow have entire books stored in some database field. Thus, the memory error.

Bandgeek · 03-26-2012, 09:01 AM

Actually there are almost 200K books in the DB, so it's all DB information. (I know, ridiculous amount of books)

I did find a workaround to let a 32 bit application use over 2GB of RAM.
http://ntcore.com/4gb_patch.php

Once I ran the patch on the main calibre.exe file I was able to load the database.

03-25-2012, 01:27 PM	#1
Bandgeek Junior Member Posts: 3 Karma: 10 Join Date: Mar 2012 Device: Kindle 3G	Qt exception thrown from an event handler Last night I left Calibre importing a big collection of books. This morning Calibre was no longer running and when I try to start it up I get a Visual C++ runtime error. Unfortunately the error window is blank and doesn't tell me what the error is. I deleted the last few dozen books that were added to the library thinking one of them might have hung it up, but that didn't help either. I ran in debug mode and this is what I got. C:\Users\Lenny>calibre-debug -g Starting up... Traceback (most recent call last): File "site-packages\calibre\gui2\library\models.py", line 319, in sort File "site-packages\calibre\gui2\library\models.py", line 327, in _sort File "site-packages\calibre\library\caches.py", line 1013, in sort File "site-packages\calibre\library\caches.py", line 1033, in multisort File "site-packages\calibre\library\caches.py", line 1067, in __call__ File "site-packages\calibre\library\caches.py", line 1073, in itervals File "site-packages\calibre\library\caches.py", line 200, in __getitem__ File "site-packages\calibre\library\database2.py", line 925, in get_metadata File "site-packages\calibre\ebooks\metadata\book\base.py", line 107, in __init __ File "copy.py", line 163, in deepcopy File "copy.py", line 257, in _deepcopy_dict File "copy.py", line 163, in deepcopy File "copy.py", line 228, in _deepcopy_list MemoryError Unhandled exception in thread started by <bound method DeviceManager.__bootstrap of <DeviceManager(Thread-6, stopped daemon 5928)>> Traceback (most recent call last): File "threading.py", line 503, in __bootstrap File "threading.py", line 543, in __bootstrap_inner MemoryError Traceback (most recent call last): File "site-packages\calibre\gui2\library\models.py", line 319, in sort File "site-packages\calibre\gui2\library\models.py", line 327, in _sort File "site-packages\calibre\library\caches.py", line 1013, in sort File "site-packages\calibre\library\caches.py", line 1033, in multisort MemoryError Qt has caught an exception thrown from an event handler. Throwing exceptions from an event handler is not supported in Qt. You must reimplement QApplication::notify() and catch all exceptions there. This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Any ideas?

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03-25-2012, 04:54 PM	#2
kovidgoyal creator of calibre Posts: 43,840 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Post the metadata.db from your calibre library

03-25-2012, 08:09 PM	#3
Bandgeek Junior Member Posts: 3 Karma: 10 Join Date: Mar 2012 Device: Kindle 3G	The DB is like 170MB, not sure if VBB will let me upload that. I've been doing some digging, it looks like it malfunctions when it hits about 2GB of ram used by the main Calibre process. From what I'm reading this is the limit for a 32 bit program, unless there's a workaround I don't know about?

03-25-2012, 11:56 PM	#5
kovidgoyal creator of calibre Posts: 43,840 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	That will be the cause of the error. It sounds like you somehow have entire books stored in some database field. Thus, the memory error.

03-26-2012, 09:01 AM	#6
Bandgeek Junior Member Posts: 3 Karma: 10 Join Date: Mar 2012 Device: Kindle 3G	Actually there are almost 200K books in the DB, so it's all DB information. (I know, ridiculous amount of books) I did find a workaround to let a 32 bit application use over 2GB of RAM. http://ntcore.com/4gb_patch.php Once I ran the patch on the main calibre.exe file I was able to load the database.

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