ESPHome: esphome/core/lwip_fast_select.h Source File

#pragma once


// Fast socket monitoring for ESP32 and LibreTiny (LwIP >= 2.1.3)

// Replaces lwip_select() with direct rcvevent reads and FreeRTOS task notifications.


#include <stdbool.h>


#ifdef __cplusplus

extern "C" {

#endif


void esphome_lwip_fast_select_init(void);


bool esphome_lwip_socket_has_data(int fd);


void esphome_lwip_hook_socket(int fd);


void esphome_lwip_wake_main_loop(void);


void esphome_lwip_wake_main_loop_from_isr(int *px_higher_priority_task_woken);


#ifdef USE_ESP32

void esphome_lwip_wake_main_loop_any_context(void);

#endif


#ifdef __cplusplus

}

#endif

esphome_lwip_fast_select_init
void esphome_lwip_fast_select_init(void)
Initialize fast select — must be called from the main loop task during setup().
Definition lwip_fast_select.c:180

esphome_lwip_socket_has_data
bool esphome_lwip_socket_has_data(int fd)
Check if a LwIP socket has data ready via direct rcvevent read (~215 ns per socket).
Definition lwip_fast_select.c:197

esphome_lwip_wake_main_loop_any_context
void esphome_lwip_wake_main_loop_any_context(void)
Wake the main loop task from any context (ISR, thread, or main loop).
Definition lwip_fast_select.c:245

esphome_lwip_hook_socket
void esphome_lwip_hook_socket(int fd)
Hook a socket's netconn callback to notify the main loop task on receive events.
Definition lwip_fast_select.c:209

esphome_lwip_wake_main_loop_from_isr
void esphome_lwip_wake_main_loop_from_isr(int *px_higher_priority_task_woken)
Wake the main loop task from an ISR — costs <1 us.
Definition lwip_fast_select.c:234

esphome_lwip_wake_main_loop
void esphome_lwip_wake_main_loop(void)
Wake the main loop task from another FreeRTOS task — costs <1 us.
Definition lwip_fast_select.c:226