From 766826cc9cc12732b289edfb8b34e0f226e2ef93 Mon Sep 17 00:00:00 2001 From: "J. Nick Koston" Date: Sun, 4 Jan 2026 08:28:01 -1000 Subject: [PATCH] [esp32][libretiny] Reuse preference buffer to avoid heap churn (#12890) --- esphome/components/esp32/preferences.cpp | 6 ++++-- esphome/components/libretiny/preferences.cpp | 6 ++++-- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/esphome/components/esp32/preferences.cpp b/esphome/components/esp32/preferences.cpp index 5e1e8734e5..08439746b6 100644 --- a/esphome/components/esp32/preferences.cpp +++ b/esphome/components/esp32/preferences.cpp @@ -23,9 +23,11 @@ struct NVSData { size_t len; void set_data(const uint8_t *src, size_t size) { - this->data = std::make_unique(size); + if (!this->data || this->len != size) { + this->data = std::make_unique(size); + this->len = size; + } memcpy(this->data.get(), src, size); - this->len = size; } }; diff --git a/esphome/components/libretiny/preferences.cpp b/esphome/components/libretiny/preferences.cpp index e47e88c6f3..68bc279767 100644 --- a/esphome/components/libretiny/preferences.cpp +++ b/esphome/components/libretiny/preferences.cpp @@ -22,9 +22,11 @@ struct NVSData { size_t len; void set_data(const uint8_t *src, size_t size) { - this->data = std::make_unique(size); + if (!this->data || this->len != size) { + this->data = std::make_unique(size); + this->len = size; + } memcpy(this->data.get(), src, size); - this->len = size; } };