This is desirable so that we don't have to wake up disk if control
file is not changed, and it is not have to be written again. We use
the same method (SHA1 hash) to check the content is the same. The
limitation is the hash is stored in memory, so we have to write the
first time in each session.
See GH-382
This is a slight optimization not to cause useless disk access. This
only applies to saving session automatically (see
--save-session-interval). aria2.saveSession and serialization at the
end of the session are always performed as before.
When serialization, we first check that whether there is any change
since the last serialization. To do this, we first calculate hash
value of serialized content without writing into file. Then compare
this value to the value of last serialization. If they do not match,
perform serialization.
Before, only spent uris where sanitized not to be contained within
remaining uris. Change this so that each uri in the
union(remaining,spent) get saved once at most.
The order of the uris will won't be changed, with remaining uris going
first followed by spent uris.
Also avoid copying the uri std::strings around during dupe checking,
usually resulting in better performance regarding CPU and space.
IOFile provides the same interface of old BufferedFile. It provides
extension points as pure virtual functions. Those functions are
implemented by 2 concrete subclasses: BufferedFile and GZipFile.
This change makes --save-session save only options specified for
download, more specifically, options in command-line, -i file and via
RPC. The other options from conf file and default values are not
saved. This will drastically decrease the size of session file.
The currently used URIs are inserted back into remaining URI list in
FileEntry::putBackRequest(), which overlaps to some of the URIs in
spentUris_. If we save spent URIs, each time save is performed, the
number of URIs are increased due to this overlap. This change fixes
this bug.
Saved sessions may very large, as in hundreds and even thousands of
megabyte when dealing with large queues.
Add support to save and reload sessions to gzipped files, when libz is
available.
The session serializer will output gzipped contents when the file ends
with .gz, while the input file reader (UriListParser) will accept
whatever is thrown at it.
--force-save option saves download with --save-session option even if
the download is completed or removed. This may be useful to save
BitTorrent seeding which is recognized as completed state. The
default value is false.
This option pauses download after added. This option is effective only
when --enable-rpc=true is given. When --save-session option is used
and there are paused downloads, they are saved with --pause=true so
that it will become paused state when the session is recovered.
DownloadEngine::onEndOfRun() to process RequestGroup objects currently
in-progress.
With this change, --on-download-stop/error/complete hooks are properly
called for in-progress downloads when Ctrl-C is pressed.
Removed SharedHandle::isNull(). Instead we added operator* and
operator unspecified_bool_type. Removed use of WeakHandle and
replaced with raw pointer.
Nils Maier