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fix slowdown

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This commit is contained in:
J. Nick Koston
2026-04-03 22:39:19 -10:00
parent 3a564633b7
commit dee78b8a8e
2 changed files with 48 additions and 44 deletions
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esphome/components/api/api_connection.h
+47 -3
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@@ -402,9 +402,53 @@ class APIConnection final : public APIServerConnectionBase {
// Non-template buffer management for send_message
bool send_message_(uint32_t payload_size, uint8_t message_type, MessageEncodeFn encode_fn, const void *msg);
// Non-template buffer management for batch encoding
static uint16_t encode_to_buffer(uint32_t calculated_size, MessageEncodeFn encode_fn, const void *msg,
APIConnection *conn, uint32_t remaining_size);
// Non-template buffer management for batch encoding.
// ALWAYS_INLINE so it merges into each call site (encode_message_to_buffer,
// fill_and_encode_entity_state) — the compiler can then inline the encode_fn
// callback and eliminate the indirect call.
static inline uint16_t ESPHOME_ALWAYS_INLINE encode_to_buffer(uint32_t calculated_size, MessageEncodeFn encode_fn,
const void *msg, APIConnection *conn,
uint32_t remaining_size) {
#ifdef HAS_PROTO_MESSAGE_DUMP
if (conn->flags_.log_only_mode) {
auto *proto_msg = static_cast<const ProtoMessage *>(msg);
DumpBuffer dump_buf;
conn->log_send_message_(proto_msg->message_name(), proto_msg->dump_to(dump_buf));
return 1;
}
#endif
// Cache frame sizes to avoid repeated virtual calls
const uint8_t header_padding = conn->helper_->frame_header_padding();
const uint8_t footer_size = conn->helper_->frame_footer_size();
// Calculate total size with padding for buffer allocation
size_t total_calculated_size = calculated_size + header_padding + footer_size;
// Check if it fits
if (total_calculated_size > remaining_size)
return 0; // Doesn't fit
auto &shared_buf = conn->parent_->get_shared_buffer_ref();
// First message: padding already in buffer, only add payload.
// Subsequent messages: use exact header size for gap-free packing.
size_t to_add;
if (conn->flags_.batch_first_message) {
conn->flags_.batch_first_message = false;
conn->batch_header_size_ = header_padding;
to_add = calculated_size;
} else {
conn->batch_header_size_ = conn->helper_->frame_header_size(calculated_size, conn->batch_message_type_);
to_add = calculated_size + conn->batch_header_size_ + footer_size;
}
shared_buf.resize(shared_buf.size() + to_add);
ProtoWriteBuffer buffer{&shared_buf, shared_buf.size() - calculated_size};
encode_fn(msg, buffer);
// Return total size (header + payload + footer)
return static_cast<uint16_t>(total_calculated_size);
}
// Thin template wrapper — computes size, delegates buffer work to non-template helper
template<typename T> static uint16_t encode_message_to_buffer(T &msg, APIConnection *conn, uint32_t remaining_size) {