When saving a tr_benc object to disk at $dst, bencode.c saves it to a tmp file in the same directory as $dst, unlinks $dst if it exists, and then renames $tmp as $dst. This commit removes the middle step, which is unnecessary because rename() has guarantees about atomically overwriting $dst.
r11813 fixed the timestamp issue by fsync()ing files before close()ing them in tr_close_file(). This causes a little overhead as even read-only files cause a sync as their atimes are modified. Instead, we should call fsync() further back in the call chain in tr_fdFileClose() so that we can know to only sync torrent files that were opened with write access.
fsync() doesn't exist on Windows. bencode had a private function, tr_fsync(), that is a portability wrapper around fsync() on *nix and _commit() on win32. Make this function package-visible, rather than private, so fdlimit.c can use it too.
As pointed out by longinus00 and ijuxda, storing per-piece timestamps in the .resume file can involve a lot of overhead. This commit reduces the overhead by adding a couple of optimizations: (1) in cases where *all* or *none* of the files' pieces were checked after the file's mtime, we can safely fold all the pieces' mtimes into a single per-file mtime. (2) since unix time takes up a lot of space when rendered as a benc integer, find a common per-file "baseline" number, then store the pieces' timestamps as offsets from that number. Also add documentation explaining this new format, and also better explaining the pre-2.20 progress format.
Files downloaded in Transmission 2.20 betas [1..3] forced each piece to be checked twice -- once on download, and once when uploading the piece for the first time. Older versions of Transmission didn't perform the latter check unless the file had changed after it was downloaded. This commit restores that behavior.
looks like this was broken in r10907 for #3368 in 2.00 when we added "-ta" as the short form of "--tracker-add". "-ta" seems to be conflicting with "-tall". This can be fixed by changing --tracker-add's short form.
make sure to call gtk_list_store_set() on rows matching torrents whose tr_stat.recheckProgress value has changed, triggering a row change event that causes the verify progress change to be displayed.
#3956's r11780 has uncovered a longstanding memory error that occurs when tr_bencParse() fails to parse a dict and leaves a dangling key. This is fixed by cleaning up the key.
tr_peerIoReconnect() was calling event_del() rather than event_free() on its io.event_read and io.event_write fields, causing those fields to be leaked. This behavior is new with libevent 2 support and doesn't affect transmission 2.1x or older.
Clearing the model on shutdown generated a warning because it used the wrong cast. Rather than fixing the cast, add tr_core_clear() for symmetry with tr_core_load().
User jusid reports prefetch causes load on his NMT to jump from <1 to 3-4. He requests a way to disable prefetch, and suggests that prefetch be disabled by default on lightweight builds. This commit adds a new settings.json key, "prefetch-enabled", which defaults to "true" on standard builds and "false" when compiled with --enable-lightweight.
Long description in #3970. Split tr_core's torrent GtkTreeModel into two models: one low-level unsorted one, and one proxy sorted one. That way we don't have to disable sorting before walking through the low-level one to sync the table's attributes with the tr_torrent and tr_stat.
Don't add linefeeds to base64-encoded data. We don't need it and it just increases the length of the string, which is typically sent over the network to an RPC client.
jusid reports that powl() doesn't exist on uClibc, so getRetryInterval() needs to work without it. A simple left-bit shifting would be fine, but since we max out after a handful of cases, a switch statement seems slightly more readable than shifting or powl().
benc requires its dictionaries to be represented in a sorted form, so we sort them before walking across the entries. However that's overkill when all we're doing is freeing memory, so this commit adds a mechanism in the benc walker to optionally avoid the sorting overhead.
TR_EMBEDDED has been around for awhile, but few (any?) repackagers are aware of it. If it was "advertised" through a configure-time argument, and in the status messages at the end of the configure script, more repackagers would be aware of it.
This line was added in r2768 to ensure that Transmission's bundled libevent was built as a static library. libevent is no longer bundled, so this line isn't needed.
Mitchell Livingston