Start all torrents auto-managed to prevent simultaneous checking
of multiple torrents.
Handle checking state of paused torrent to prevent it from being
resumed when qBittorrent is closed until checking isn't complete.
Add/restore all torrents in "paused" state and then resume those
that need to be really "resumed" (added/restored in "resumed" state).
Keep torrents with missing files paused.
Force recheck torrent with missing files when it's resumed by the user.
During startup we can get above 1000 alerts at each pop even with only
30 torrents in the queue. This is because libtorrent will post
piece_finished_alert and file_completed_alert for each torrent. These
alerts push out of the way the ones we care about.
The alert queue will be grown to max only if needed. So we don't use
more memory. It will greatly depend on how many torrents a user has in
their session.
When getting fastresume_rejected_alert we need to act as fast as
possible in pausing it, otherwise there's a chance it will begin
downloading and writing to disk before we pause it.
"Active torrents" is a somewhat unintuitive concept as a basis for
preventing sleep, as torrents can become active or inactive on the
network at any time. This brings some predictability to the inhibit
sleep option, and will inhibit sleep as long as there are unpaused
downloads or uploads, regardless of network activity.
Closes#1696, #4592, #4655, #7019, #7159, #7452
Don't post "torrent resumed" event when torrent starts in "resumed"
state.
Fix confusing names. Now "resumed torrent" means "unpaused torrent"
only. When we load previously added torrent it is called "restored
torrent".
When a file error happens libtorrent spews a ton of `file_error_alert`
which result in log floods and notification balloon floods. The later
might render the program inaccessible because the constant
notifications prevent the user from interacting with the tray icon.
Closes#8934
Using iostream usually adds a lot of other operators (<<, endl), whereas
*printf takes only 1 function call.
Also use qUtf8Printable whenever possible.
