void alert_manager::maybe_notify(alert* a, mutex::scoped_lock& lock)
{
if (a->type() == save_resume_data_failed_alert::alert_type
|| a->type() == save_resume_data_alert::alert_type)
++m_num_queued_resume;
if (m_alerts[m_generation].size() == 1)
{
lock.unlock();
// we just posted to an empty queue. If anyone is waiting for
// alerts, we need to notify them. Also (potentially) call the
// user supplied m_notify callback to let the client wake up its
// message loop to poll for alerts.
if (m_notify) m_notify();
// TODO: 2 keep a count of the number of threads waiting. Only if it's
// > 0 notify them
m_condition.notify_all();
}
else
{
lock.unlock();
}
#ifndef TORRENT_DISABLE_EXTENSIONS
for (ses_extension_list_t::iterator i = m_ses_extensions.begin()
, end(m_ses_extensions.end()); i != end; ++i)
{
(*i)->on_alert(a);
}
#endif
}
// checks to see if we're no longer exceeding the high watermark,
// and if we're in fact below the low watermark. If so, we need to
// post the notification messages to the peers that are waiting for
// more buffers to received data into
void disk_buffer_pool::check_buffer_level(mutex::scoped_lock& l)
{
TORRENT_ASSERT(l.locked());
if (!m_exceeded_max_size || m_in_use > m_low_watermark) return;
m_exceeded_max_size = false;
// if slice is non-NULL, only some of the handlers got a buffer
// back, and the slice should be posted back to the network thread
std::vector<handler_t>* slice = NULL;
for (std::vector<handler_t>::iterator i = m_handlers.begin()
, end(m_handlers.end()); i != end; ++i)
{
i->buffer = allocate_buffer_impl(l, i->category);
if (!m_exceeded_max_size || i == end - 1) continue;
// only some of the handlers got buffers. We need to slice the vector
slice = new std::vector<handler_t>();
slice->insert(slice->end(), m_handlers.begin(), i + 1);
m_handlers.erase(m_handlers.begin(), i + 1);
break;
}
if (slice != NULL)
{
l.unlock();
m_ios.post(boost::bind(&watermark_callback
, static_cast<std::vector<boost::shared_ptr<disk_observer> >*>(NULL)
, slice));
return;
}
std::vector<handler_t>* handlers = new std::vector<handler_t>();
handlers->swap(m_handlers);
if (m_exceeded_max_size)
{
l.unlock();
m_ios.post(boost::bind(&watermark_callback
, static_cast<std::vector<boost::shared_ptr<disk_observer> >*>(NULL)
, handlers));
return;
}
std::vector<boost::shared_ptr<disk_observer> >* cbs
= new std::vector<boost::shared_ptr<disk_observer> >();
m_observers.swap(*cbs);
l.unlock();
m_ios.post(boost::bind(&watermark_callback, cbs, handlers));
}
void condition_variable::wait_for(mutex::scoped_lock& l, time_duration rel_time)
{
TORRENT_ASSERT(l.locked());
++m_num_waiters;
l.unlock();
acquire_sem_etc(m_sem, 1, B_RELATIVE_TIMEOUT, total_microseconds(rel_time));
l.lock();
--m_num_waiters;
}
void condition_variable::wait(mutex::scoped_lock& l)
{
TORRENT_ASSERT(l.locked());
++m_num_waiters;
l.unlock();
acquire_sem(m_sem);
l.lock();
--m_num_waiters;
}
void condition_variable::wait_for(mutex::scoped_lock& l, time_duration rel_time)
{
TORRENT_ASSERT(l.locked());
++m_num_waiters;
l.unlock();
WaitForSingleObject(m_sem, total_milliseconds(rel_time));
l.lock();
--m_num_waiters;
}
void condition_variable::wait(mutex::scoped_lock& l)
{
TORRENT_ASSERT(l.locked());
++m_num_waiters;
l.unlock();
WaitForSingleObject(m_sem, INFINITE);
l.lock();
--m_num_waiters;
}
void file_pool::remove_oldest(mutex::scoped_lock& l)
{
file_set::iterator i = std::min_element(m_files.begin(), m_files.end()
, boost::bind(&lru_file_entry::last_use, boost::bind(&file_set::value_type::second, _1))
< boost::bind(&lru_file_entry::last_use, boost::bind(&file_set::value_type::second, _2)));
if (i == m_files.end()) return;
file_handle file_ptr = i->second.file_ptr;
m_files.erase(i);
// closing a file may be long running operation (mac os x)
l.unlock();
file_ptr.reset();
l.lock();
}
void natpmp::disable(error_code const& ec, mutex::scoped_lock& l)
{
m_disabled = true;
for (std::vector<mapping_t>::iterator i = m_mappings.begin(), end(m_mappings.end()); i != end; ++i)
{
if (i->protocol == none) continue;
i->protocol = none;
int index = i - m_mappings.begin();
l.unlock();
m_callback(index, address(), 0, ec);
l.lock();
}
close_impl(l);
}
void natpmp::log(char const* msg, mutex::scoped_lock& l)
{
l.unlock();
m_log_callback(msg);
l.lock();
}