Ctrl-R not working?

[mbovenka]

I'm running Calibre 5.2 on Win10.

When I do a Ctrl-R(estart), I get the following error when Calibre tries to restart after shutting down:

calibre, version 5.2.0
ERROR: Cannot start calibre: <p>calibre is already running.</p><p>calibre may be running in the system tray, in the lower right region of the screen.</p><p>If you are sure it is not running, try rebooting your computer.

Traceback (most recent call last):
File "calibre\gui2\main.py", line 543, in main
File "calibre\gui2\main.py", line 514, in create_listener
File "multiprocessing\connection.py", line 446, in __init__
File "multiprocessing\connection.py", line 645, in __init__
File "multiprocessing\connection.py", line 658, in _new_handle
PermissionError: [WinError 5] Access is denied


Shutting down with Ctrl-Q and starting Calibre afterwards works fine, as does Ctrl-Shift-R(estart in debug mode).

[kovidgoyal]

Works for me on my win10 machine.

[theducks]

Works for me also, but I do not run the Tray icon.

[georgemk]

I'm also seeing the same Winerror 5 message when using either the Ctrl-R or Ctrl-Shift-R key combinations.

Calibre 5.2
Windows Version 10.0.19041 Build 19041

[ownedbycats]

I get the same error with the Restart button. Monitoring the task manager it tries to re-start the process before Calibre has a chance to fully unload from memory. Large library size or amount of plugins, perhaps?

Calibre 5.2 (x64), Windows 10 Home v.2004.

[kovidgoyal]

That's very strange, the child process is launched after the library and all plugins are already shutdown. The parent process really shouldn't be hanging around for two seconds (the time the child waits).

But in any case, this should fix it: https://github.com/kovidgoyal/calibr...b48f90c9ec9ba6

And it has the nice side effect of removing the two second wait.

[georgemk]

Thank you Kovid. I'll check it out when the next release is done.

[ownedbycats]

Originally Posted by kovidgoyal

That's very strange, the child process is launched after the library and all plugins are already shutdown. The parent process really shouldn't be hanging around for two seconds (the time the child waits).

But in any case, this should fix it: https://github.com/kovidgoyal/calibr...b48f90c9ec9ba6

And it has the nice side effect of removing the two second wait.

I've not really checked into this but I noticed a spike in disk drive usage when restarting Calibre. Could be that the parent process was being paged out and was slow to swap back into physical memory?

[georgemk]

I have cloned the github source and setup the required environment variable. the version on the Calibre GUI says 5.2* so I assume it is running the github code as needed.

Now Ctrl R and Ctrl Shift R (or the menu option from Preferences) will close Calibre but it doesn't restart at all.

[georgemk]

Output from debug after the Control R is typed

Starting QuickView
Traceback (most recent call last):
  File "runpy.py", line 194, in _run_module_as_main
  File "runpy.py", line 87, in _run_code
  File "site.py", line 82, in <module>
  File "site.py", line 77, in main
  File "site.py", line 49, in run_entry_point
  File "C:\Users\george\github\calibre\src\calibre\debug.py", line 264, in main
  File "C:\Users\george\github\calibre\src\calibre\gui_launch.py", line 73, in calibre
  File "C:\Users\george\github\calibre\src\calibre\gui2\main.py", line 587, in main
  File "C:\Users\george\github\calibre\src\calibre\gui2\main.py", line 414, in run_gui
  File "C:\Users\george\github\calibre\src\calibre\gui2\main.py", line 358, in set_restarting_env_var
AttributeError: module 'winutil' has no attribute 'get_process_times'

[kovidgoyal]

Yes, it needs a native code module so it wont work until you can install the 5.3 binary

[georgemk]

Ah okay then. I'll wait for the next release then. Just thought I'd get ahead and test it early.
Thanks again

[mbovenka]

Originally Posted by ownedbycats

I get the same error with the Restart button. Monitoring the task manager it tries to re-start the process before Calibre has a chance to fully unload from memory. Large library size or amount of plugins, perhaps?

In my case it was the library size. With an empty library it restarts fine.

[JSWolf]

Originally Posted by mbovenka

In my case it was the library size. With an empty library it restarts fine.

Maybe it's just slow. Try with your large library and wait and see what happens. If you have a large enough library with not enough memory or a 32-bit version with a large enough libeary, it's probably spending time swapping in/out of disk.

[georgemk]

Originally Posted by JSWolf

Maybe it's just slow. Try with your large library and wait and see what happens. If you have a large enough library with not enough memory or a 32-bit version with a large enough libeary, it's probably spending time swapping in/out of disk.

My library has 3166 Books, I'm running the 64bit version and when Calibre is running I still have 11.8GB of memory available out of 16GB. And all disks are SSD.
So nothing out of the ordinary there.