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Code Issues Releases Wiki Activity

[api] Eliminate heap allocations when transmitting Event types (#11773)

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This commit is contained in:
J. Nick Koston
2025-11-12 14:26:36 -06:00
committed by GitHub
parent 4b58cb4ce6
commit 5a550cc579
2 changed files with 14 additions and 48 deletions
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14
esphome/components/api/api_connection.cpp
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@@ -1294,11 +1294,11 @@ void APIConnection::alarm_control_panel_command(const AlarmControlPanelCommandRe
#endif
#ifdef USE_EVENT
void APIConnection::send_event(event::Event *event, const std::string &event_type) {
void APIConnection::send_event(event::Event *event, const char *event_type) {
this->schedule_message_(event, MessageCreator(event_type), EventResponse::MESSAGE_TYPE,
EventResponse::ESTIMATED_SIZE);
}
uint16_t APIConnection::try_send_event_response(event::Event *event, const std::string &event_type, APIConnection *conn,
uint16_t APIConnection::try_send_event_response(event::Event *event, const char *event_type, APIConnection *conn,
uint32_t remaining_size, bool is_single) {
EventResponse resp;
resp.set_event_type(StringRef(event_type));
@@ -1650,9 +1650,7 @@ void APIConnection::DeferredBatch::add_item(EntityBase *entity, MessageCreator c
// O(n) but optimized for RAM and not performance.
for (auto &item : items) {
if (item.entity == entity && item.message_type == message_type) {
// Clean up old creator before replacing
item.creator.cleanup(message_type);
// Move assign the new creator
// Replace with new creator
item.creator = std::move(creator);
return;
}
@@ -1822,7 +1820,7 @@ void APIConnection::process_batch_() {
// Handle remaining items more efficiently
if (items_processed < this->deferred_batch_.size()) {
// Remove processed items from the beginning with proper cleanup
// Remove processed items from the beginning
this->deferred_batch_.remove_front(items_processed);
// Reschedule for remaining items
this->schedule_batch_();
@@ -1835,10 +1833,10 @@ void APIConnection::process_batch_() {
uint16_t APIConnection::MessageCreator::operator()(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
bool is_single, uint8_t message_type) const {
#ifdef USE_EVENT
// Special case: EventResponse uses string pointer
// Special case: EventResponse uses const char * pointer
if (message_type == EventResponse::MESSAGE_TYPE) {
auto *e = static_cast<event::Event *>(entity);
return APIConnection::try_send_event_response(e, *data_.string_ptr, conn, remaining_size, is_single);
return APIConnection::try_send_event_response(e, data_.const_char_ptr, conn, remaining_size, is_single);
}
#endif