1 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 #pragma once 15 16 #ifdef LINUX_TARGET 17 namespace nvs 18 { 19 class Lock 20 { 21 public: Lock()22 Lock() { } ~Lock()23 ~Lock() { } init()24 static void init() {} uninit()25 static void uninit() {} 26 }; 27 } // namespace nvs 28 29 #else // LINUX_TARGET 30 31 #include "esp_osal/esp_osal.h" 32 #include "esp_osal/semphr.h" 33 34 namespace nvs 35 { 36 37 class Lock 38 { 39 public: Lock()40 Lock() 41 { 42 if (mSemaphore) { 43 xSemaphoreTake(mSemaphore, portMAX_DELAY); 44 } 45 } 46 ~Lock()47 ~Lock() 48 { 49 if (mSemaphore) { 50 xSemaphoreGive(mSemaphore); 51 } 52 } 53 init()54 static esp_err_t init() 55 { 56 if (mSemaphore) { 57 return ESP_OK; 58 } 59 mSemaphore = xSemaphoreCreateMutex(); 60 if (!mSemaphore) { 61 return ESP_ERR_NO_MEM; 62 } 63 return ESP_OK; 64 } 65 uninit()66 static void uninit() 67 { 68 if (mSemaphore) { 69 vSemaphoreDelete(mSemaphore); 70 } 71 mSemaphore = nullptr; 72 } 73 74 static SemaphoreHandle_t mSemaphore; 75 }; 76 } // namespace nvs 77 78 #endif // LINUX_TARGET 79