fjpanag commented on code in PR #2228: URL: https://github.com/apache/nuttx-apps/pull/2228#discussion_r1426654083
########## system/settings/settings.c: ########## @@ -0,0 +1,1717 @@ +/**************************************************************************** + * apps/system/settings/settings.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <sys/types.h> +#include <pthread.h> +#include <unistd.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <nuttx/crc32.h> +#include <errno.h> +#include <signal.h> +#include <time.h> +#include <assert.h> +#include <stdarg.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include <ctype.h> +#include <nuttx/config.h> +#include <sys/types.h> + +#include "system/storage.h" +#include "system/settings.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#if defined(CONFIG_SYSTEM_SETTINGS_CACHED_SAVES) +# define TIMER_SIGNAL SIGRTMIN +#endif + +#ifndef CONFIG_SYSTEM_SETTINGS_SIGNO +# define CONFIG_SYSTEM_SETTINGS_SIGNO 32 +#endif + +#ifndef CONFIG_SYSTEM_SETTINGS_CACHE_TIME_MS +# define CONFIG_SYSTEM_SETTINGS_CACHE_TIME_MS 100 +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static int sanity_check(FAR char *str); +static uint32_t hash_calc(void); +static int get_setting(FAR char *key, FAR setting_t **setting); +static size_t get_string(FAR setting_t *setting, FAR char *buffer, + size_t size); +static int set_string(FAR setting_t *setting, FAR char *str); +static int get_int(FAR setting_t *setting, FAR int *i); +static int set_int(FAR setting_t *setting, int i); +static int get_byte(FAR setting_t *setting, FAR int *i); +static int set_byte(FAR setting_t *setting, int i); +static int get_bool(FAR setting_t *setting, FAR int *i); +static int set_bool(FAR setting_t *setting, int i); +static int get_float(FAR setting_t *setting, FAR double *f); +static int set_float(FAR setting_t *setting, double f); +static int get_ip(FAR setting_t *setting, struct in_addr *ip); +static int set_ip(FAR setting_t *setting, struct in_addr *ip); +static int load(void); +static int save(void); +static void signotify(void); +void dump_cache(union sigval ptr); + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static struct +{ + pthread_mutex_t mtx; + uint32_t hash; + bool wrpend; + bool initialized; + storage_t store[CONFIG_SYSTEM_SETTINGS_MAX_STORAGES]; + struct notify_s notify[CONFIG_SYSTEM_SETTINGS_MAX_SIGNALS]; +#if defined(CONFIG_SYSTEM_SETTINGS_CACHED_SAVES) + struct sigevent sev; + struct itimerspec trigger; + timer_t timerid; +#endif +} g_settings; + +setting_t map[CONFIG_SYSTEM_SETTINGS_MAP_SIZE]; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: hash_calc + * + * Description: + * Gets a setting for a string value + * + * Input Parameters: + * none + * Returned Value: + * crc32 hash of all the settings + * + ****************************************************************************/ + +static uint32_t hash_calc(void) +{ + return crc32((FAR uint8_t *)map, sizeof(map)); +} + +/**************************************************************************** + * Name: get_setting + * + * Description: + * Gets a setting for a string value + * + * Input Parameters: + * key - key of the required setting + * setting - pointer to pointer for the setting + * + * Returned Value: + * The value of the setting for the given key + * + ****************************************************************************/ + +static int get_setting(FAR char *key, FAR setting_t **setting) +{ + DEBUGASSERT(*setting == NULL); Review Comment: Maybe it has to be: ``` DEBUGASSERT(setting && *setting); ``` Can you please spend some thought on this? -- This is an automated message from the Apache Git Service. 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