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updated documentation on saving resume data and fixed client_test to do it properly

This commit is contained in:
Arvid Norberg 2008-10-17 02:26:08 +00:00
parent c04183d960
commit 18017c3f72
2 changed files with 18 additions and 13 deletions
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17
docs/manual.rst
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@ -2146,11 +2146,17 @@ The fast resume data will be empty in the following cases:
(see libtorrent's `metadata from peers`_ extension)
Note that by the time you receive the fast resume data, it may already be invalid if the torrent
is still downloading! The recommended practice is to first pause the torrent, then generate the
is still downloading! The recommended practice is to first pause the session, then generate the
fast resume data, and then close it down. Make sure to not `remove_torrent()`_ before you receive
the `save_resume_data_alert`_ though. Only pause the torrent before you save the resume data
if you will remove the torrent afterwards. There's no need to pause when saving intermittent
resume data.
the `save_resume_data_alert`_ though. There's no need to pause when saving intermittent resume data.
.. warning:: If you pause every torrent individually instead of pausing the session, every torrent
will have its paused state saved in the resume data!
.. note:: It is typically a good idea to save resume data whenever a torrent is completed or paused. In those
cases you don't need to pause the torrent or the session, since the torrent will do no more writing
to its files. If you save resume data for torrents when they are paused, you can accelerate the
shutdown process by not saving resume data again for paused torrents.
In full allocation mode the reume data is never invalidated by subsequent
writes to the files, since pieces won't move around. This means that you don't need to
@ -2168,13 +2174,14 @@ Example code to pause and save resume data for all torrents and wait for the ale
int num_resume_data = 0;
std::vector<torrent_handle> handles = ses.get_torrents();
ses.pause();
for (std::vector<torrent_handle>::iterator i = handles.begin();
i != handles.end(); ++i)
{
torrent_handle& h = *i;
if (!h.has_metadata()) continue;
if (!h.is_valid()) continue;
h.pause();
h.save_resume_data();
++num_resume_data;
}

6
examples/client_test.cpp
View File

@ -1100,18 +1100,16 @@ int main(int ac, char* av[])
// keep track of the number of resume data
// alerts to wait for
int num_resume_data = 0;
ses.pause();
for (handles_t::iterator i = handles.begin();
i != handles.end(); ++i)
{
torrent_handle& h = i->second;
if (!h.is_valid()) continue;
h.auto_managed(false);
if (h.is_paused()) continue;
h.pause();
if (!h.has_metadata()) continue;
// pause
std::cout << "pausing " << h.name() << std::endl;
std::cout << "saving resume data for " << h.name() << std::endl;
// save_resume_data will generate an alert when it's done
h.save_resume_data();
++num_resume_data;