components/nvs_flash/src/nvs_platform.cpp (ESP-IDF)

/* * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #include "nvs_platform.hpp" using namespace nvs; #ifdef LINUX_TARGET Lock::Lock() {} Lock::~Lock() {} esp_err_t nvs::Lock::init() {return ESP_OK;} void Lock::uninit() {} #else #include "sys/lock.h" Lock::Lock() { // Newlib implementation ensures that even if mSemaphore was 0, it gets initialized. // Locks mSemaphore _lock_acquire(&mSemaphore); } Lock::~Lock() { // Unlocks mSemaphore _lock_release(&mSemaphore); } esp_err_t Lock::init() { // Let postpone initialization to the Lock::Lock. // It is designed to lazy initialize the semaphore in a properly guarded critical section return ESP_OK; } void Lock::uninit() { // Uninitializes mSemaphore. Please be aware that uninitialization of semaphore shared and held by another thread // can cause undefined behavior if (mSemaphore) { _lock_close(&mSemaphore); } } _lock_t Lock::mSemaphore = 0; #endif