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[core] Shrink Application::dump_config_at_ from size_t to uint16_t

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Components are indexed by ESPHOME_COMPONENT_COUNT which is a uint16_t-sized
StaticVector. Using size_t for the dump_config index wastes 2 bytes of storage
and adds padding. Move it to the uint16_t group for better struct packing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
J. Nick Koston
2026-02-18 12:28:08 -06:00
parent 9cd7b0b32b
commit 386bd16fc4
1 changed files with 2 additions and 4 deletions
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6
esphome/core/application.h
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@@ -582,9 +582,6 @@ class Application {
std::string name_;
std::string friendly_name_;
// size_t members
size_t dump_config_at_{SIZE_MAX};
// 4-byte members
uint32_t last_loop_{0};
uint32_t loop_component_start_time_{0};
@@ -594,7 +591,8 @@ class Application {
#endif
// 2-byte members (grouped together for alignment)
uint16_t loop_interval_{16}; // Loop interval in ms (max 65535ms = 65.5 seconds)
uint16_t dump_config_at_{std::numeric_limits<uint16_t>::max()}; // Index into components_ for dump_config progress
uint16_t loop_interval_{16}; // Loop interval in ms (max 65535ms = 65.5 seconds)
uint16_t looping_components_active_end_{0}; // Index marking end of active components in looping_components_
uint16_t current_loop_index_{0}; // For safe reentrant modifications during iteration