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Code Issues Releases Wiki Activity

Reduce Switch component memory usage by 8 bytes per instance (#9112)

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This commit is contained in:
J. Nick Koston
2025-06-17 20:14:03 +02:00
committed by Jesse Hills
parent 4bc9646e8f
commit 89267b9e06
1 changed files with 13 additions and 7 deletions
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20
esphome/components/switch/switch.h
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@@ -21,7 +21,7 @@ const int RESTORE_MODE_PERSISTENT_MASK = 0x02;
const int RESTORE_MODE_INVERTED_MASK = 0x04;
const int RESTORE_MODE_DISABLED_MASK = 0x08;
enum SwitchRestoreMode {
enum SwitchRestoreMode : uint8_t {
SWITCH_ALWAYS_OFF = !RESTORE_MODE_ON_MASK,
SWITCH_ALWAYS_ON = RESTORE_MODE_ON_MASK,
SWITCH_RESTORE_DEFAULT_OFF = RESTORE_MODE_PERSISTENT_MASK,
@@ -49,12 +49,12 @@ class Switch : public EntityBase, public EntityBase_DeviceClass {
*/
void publish_state(bool state);
/// The current reported state of the binary sensor.
bool state;
/// Indicates whether or not state is to be retrieved from flash and how
SwitchRestoreMode restore_mode{SWITCH_RESTORE_DEFAULT_OFF};
/// The current reported state of the binary sensor.
bool state;
/** Turn this switch on. This is called by the front-end.
*
* For implementing switches, please override write_state.
@@ -123,10 +123,16 @@ class Switch : public EntityBase, public EntityBase_DeviceClass {
*/
virtual void write_state(bool state) = 0;
CallbackManager<void(bool)> state_callback_{};
bool inverted_{false};
Deduplicator<bool> publish_dedup_;
// Pointer first (4 bytes)
ESPPreferenceObject rtc_;
// CallbackManager (12 bytes on 32-bit - contains vector)
CallbackManager<void(bool)> state_callback_{};
// Small types grouped together
Deduplicator<bool> publish_dedup_; // 2 bytes (bool has_value_ + bool last_value_)
bool inverted_{false}; // 1 byte
// Total: 3 bytes, 1 byte padding
};
#define LOG_SWITCH(prefix, type, obj) log_switch((TAG), (prefix), LOG_STR_LITERAL(type), (obj))