void torrent_handle::async_call(Fun f, Args&&... a) const
{
std::shared_ptr<torrent> t = m_torrent.lock();
if (!t)
{
#ifndef BOOST_NO_EXCEPTIONS
throw_invalid_handle();
#else
std::terminate();
#endif
}
session_impl& ses = static_cast<session_impl&>(t->session());
ses.get_io_service().dispatch([=,&ses] ()
{
#ifndef BOOST_NO_EXCEPTIONS
try {
#endif
(t.get()->*f)(a...);
#ifndef BOOST_NO_EXCEPTIONS
} catch (system_error const& e) {
ses.alerts().emplace_alert<torrent_error_alert>(torrent_handle(m_torrent)
, e.code(), e.what());
} catch (std::exception const& e) {
ses.alerts().emplace_alert<torrent_error_alert>(torrent_handle(m_torrent)
, error_code(), e.what());
} catch (...) {
ses.alerts().emplace_alert<torrent_error_alert>(torrent_handle(m_torrent)
, error_code(), "unknown error");
}
#endif
} );
}
void session::remove_torrent(const torrent_handle& h, int options)
{
if (!h.is_valid())
#ifdef BOOST_NO_EXCEPTIONS
return;
#else
throw_invalid_handle();
#endif
TORRENT_ASYNC_CALL2(remove_torrent, h, options);
}
torrent_info const& torrent_handle::get_torrent_info() const
{
INVARIANT_CHECK;
#ifdef BOOST_NO_EXCEPTIONS
const static torrent_info empty(sha1_hash(0));
#endif
boost::shared_ptr<torrent> t = m_torrent.lock();
if (!t)
#ifdef BOOST_NO_EXCEPTIONS
return empty;
#else
throw_invalid_handle();
#endif
session_impl::mutex_t::scoped_lock l(t->session().m_mutex);
if (!t->valid_metadata())
#ifdef BOOST_NO_EXCEPTIONS
return empty;
#else
throw_invalid_handle();
#endif
return t->torrent_file();
}
void torrent_handle::connect_peer(tcp::endpoint const& adr, int source) const
{
INVARIANT_CHECK;
boost::shared_ptr<torrent> t = m_torrent.lock();
if (!t)
#ifdef BOOST_NO_EXCEPTIONS
return;
#else
throw_invalid_handle();
#endif
session_impl::mutex_t::scoped_lock l(t->session().m_mutex);
peer_id id;
std::fill(id.begin(), id.end(), 0);
t->get_policy().add_peer(adr, id, source, 0);
}
Ret torrent_handle::sync_call_ret(Ret def, Fun f, Args&&... a) const
{
std::shared_ptr<torrent> t = m_torrent.lock();
Ret r = def;
#ifndef BOOST_NO_EXCEPTIONS
if (!t) throw_invalid_handle();
#else
if (!t) return r;
#endif
session_impl& ses = static_cast<session_impl&>(t->session());
// this is the flag to indicate the call has completed
bool done = false;
std::exception_ptr ex;
ses.get_io_service().dispatch([=,&r,&done,&ses,&ex] ()
{
#ifndef BOOST_NO_EXCEPTIONS
try {
#endif
r = (t.get()->*f)(a...);
#ifndef BOOST_NO_EXCEPTIONS
} catch (...) {
ex = std::current_exception();
}
#endif
std::unique_lock<std::mutex> l(ses.mut);
done = true;
ses.cond.notify_all();
} );
aux::torrent_wait(done, ses);
if (ex) std::rethrow_exception(ex);
return r;
}
