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htc: optimize Mux::QuerySendPacket

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This commit is contained in:
Michael Scire 2021-02-09 11:46:34 -08:00 committed by SciresM
parent 00ab210e66
commit 968ce12492
1 changed files with 11 additions and 15 deletions
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26
libraries/libstratosphere/source/htclow/mux/htclow_mux.cpp
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@ -81,24 +81,20 @@ namespace ams::htclow::mux {
/* Lock ourselves. */ /* Lock ourselves. */
std::scoped_lock lk(m_mutex); std::scoped_lock lk(m_mutex);
/* Get our map. */ /* Check for an error packet. */
auto &map = m_channel_impl_map.GetMap(); /* NOTE: Nintendo checks this once per iteration of the below loop. */
/* The extra checks are unnecessary, because we hold our mutex. */
if (auto *error_packet = m_global_send_buffer.GetNextPacket(); error_packet != nullptr) {
std::memcpy(header, error_packet->GetHeader(), sizeof(*header));
*out_body_size = 0;
return true;
}
/* Iterate the map, checking for valid packet each time. */ /* Iterate the map, checking each channel for a valid valid packet. */
for (auto &pair : map) { for (auto &pair : m_channel_impl_map.GetMap()) {
/* Get the current channel impl. */ /* Get the current channel impl. */
auto &channel_impl = m_channel_impl_map[pair.second];
/* Check for an error packet. */
/* NOTE: it's unclear why Nintendo does this every iteration of the loop... */
if (auto *error_packet = m_global_send_buffer.GetNextPacket(); error_packet != nullptr) {
std::memcpy(header, error_packet->GetHeader(), sizeof(*header));
*out_body_size = 0;
return true;
}
/* See if the channel has something for us to send. */ /* See if the channel has something for us to send. */
if (channel_impl.QuerySendPacket(header, body, out_body_size)) { if (m_channel_impl_map[pair.second].QuerySendPacket(header, body, out_body_size)) {
return this->IsSendable(header->packet_type); return this->IsSendable(header->packet_type);
} }
} }