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EasyFlash/easyflash/src/ef_log.c

732 lines
27 KiB
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/*
* This file is part of the EasyFlash Library.
*
* Copyright (c) 2015-2019, Armink, <armink.ztl@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* 'Software'), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Function: Save logs to flash.
* Created on: 2015-06-04
*/
#include <easyflash.h>
#ifdef EF_USING_LOG
#if defined(EF_USING_LOG) && !defined(LOG_AREA_SIZE)
#error "Please configure log area size (in ef_cfg.h)"
#endif
/* magic code on every sector header. 'EF' is 0xEF30EF30 */
#define LOG_SECTOR_MAGIC 0xEF30EF30
/* sector header size, includes the sector magic code and status magic code */
#define LOG_SECTOR_HEADER_SIZE 12
/* sector header word size,what is equivalent to the total number of sectors header index */
#define LOG_SECTOR_HEADER_WORD_SIZE 3
/**
* Sector status magic code
* The sector status is 8B after LOG_SECTOR_MAGIC at every sector header.
* ==============================================
* | header(12B) | status |
* ----------------------------------------------
* | 0xEF30EF30 0xFFFFFFFF 0xFFFFFFFF | empty |
* | 0xEF30EF30 0xFEFEFEFE 0xFFFFFFFF | using |
* | 0xEF30EF30 0xFEFEFEFE 0xFCFCFCFC | full |
* ==============================================
*
* State transition relationship: empty->using->full
* The FULL status will change to EMPTY after sector clean.
*/
#define SECTOR_STATUS_MAGIC_EMPUT 0xFFFFFFFF
#define SECTOR_STATUS_MAGIC_USING 0xFEFEFEFE
#define SECTOR_STATUS_MAGIC_FULL 0xFCFCFCFC
typedef enum {
SECTOR_STATUS_EMPUT,
SECTOR_STATUS_USING,
SECTOR_STATUS_FULL,
SECTOR_STATUS_HEADER_ERROR,
} SectorStatus;
typedef enum {
SECTOR_HEADER_MAGIC_INDEX,
SECTOR_HEADER_USING_INDEX,
SECTOR_HEADER_FULL_INDEX,
} SectorHeaderIndex;
/* the stored logs start address and end address. It's like a ring buffer implemented on flash. */
static uint32_t log_start_addr = 0, log_end_addr = 0;
/* saved log area address for flash */
static uint32_t log_area_start_addr = 0;
/* initialize OK flag */
static bool init_ok = false;
static void find_start_and_end_addr(void);
static uint32_t get_next_flash_sec_addr(uint32_t cur_addr);
/**
* The flash save log function initialize.
*
* @return result
*/
EfErrCode ef_log_init(void) {
EfErrCode result = EF_NO_ERR;
EF_ASSERT(LOG_AREA_SIZE);
EF_ASSERT(EF_ERASE_MIN_SIZE);
/* the log area size must be an integral multiple of erase minimum size. */
EF_ASSERT(LOG_AREA_SIZE % EF_ERASE_MIN_SIZE == 0);
/* the log area size must be more than twice of EF_ERASE_MIN_SIZE */
EF_ASSERT(LOG_AREA_SIZE / EF_ERASE_MIN_SIZE >= 2);
#ifdef EF_USING_ENV
log_area_start_addr = EF_START_ADDR + ENV_AREA_SIZE;
#else
log_area_start_addr = EF_START_ADDR;
#endif
/* find the log store start address and end address */
find_start_and_end_addr();
/* initialize OK */
init_ok = true;
return result;
}
/**
* Get flash sector current status.
*
* @param addr sector address, this function will auto calculate the sector header address by this address.
*
* @return the flash sector current status
*/
static SectorStatus get_sector_status(uint32_t addr) {
uint32_t header_buf[LOG_SECTOR_HEADER_WORD_SIZE] = {0}, header_addr = 0;
uint32_t sector_header_magic = 0;
uint32_t status_full_magic = 0, status_use_magic = 0;
/* calculate the sector header address */
header_addr = addr & (~(EF_ERASE_MIN_SIZE - 1));
if (ef_port_read(header_addr, header_buf, sizeof(header_buf)) == EF_NO_ERR) {
sector_header_magic = header_buf[SECTOR_HEADER_MAGIC_INDEX];
status_use_magic = header_buf[SECTOR_HEADER_USING_INDEX];
status_full_magic = header_buf[SECTOR_HEADER_FULL_INDEX];
} else {
EF_DEBUG("Error: Read sector header data error.\n");
return SECTOR_STATUS_HEADER_ERROR;
}
/* compare header magic code */
if(sector_header_magic == LOG_SECTOR_MAGIC){
if((status_use_magic == SECTOR_STATUS_MAGIC_EMPUT) && (status_full_magic == SECTOR_STATUS_MAGIC_EMPUT)) {
return SECTOR_STATUS_EMPUT;
} else if((status_use_magic == SECTOR_STATUS_MAGIC_USING) && (status_full_magic == SECTOR_STATUS_MAGIC_EMPUT)) {
return SECTOR_STATUS_USING;
} else if((status_use_magic == SECTOR_STATUS_MAGIC_USING) && (status_full_magic == SECTOR_STATUS_MAGIC_FULL)) {
return SECTOR_STATUS_FULL;
} else {
return SECTOR_STATUS_HEADER_ERROR;
}
} else {
return SECTOR_STATUS_HEADER_ERROR;
}
}
/**
* Write flash sector current status.
*
* @param addr sector address, this function will auto calculate the sector header address by this address.
* @param status sector cur status
*
* @return result
*/
static EfErrCode write_sector_status(uint32_t addr, SectorStatus status) {
uint32_t header, header_addr = 0;
/* calculate the sector header address */
header_addr = addr & (~(EF_ERASE_MIN_SIZE - 1));
/* calculate the sector staus magic */
switch (status) {
case SECTOR_STATUS_EMPUT: {
header = LOG_SECTOR_MAGIC;
return ef_port_write(header_addr, &header, sizeof(header));
}
case SECTOR_STATUS_USING: {
header = SECTOR_STATUS_MAGIC_USING;
return ef_port_write(header_addr + sizeof(header), &header, sizeof(header));
}
case SECTOR_STATUS_FULL: {
header = SECTOR_STATUS_MAGIC_FULL;
return ef_port_write(header_addr + sizeof(header) * 2, &header, sizeof(header));
}
default:
return EF_WRITE_ERR;
}
}
/**
* Find the current flash sector using end address by continuous 0xFF.
*
* @param addr sector address
*
* @return current flash sector using end address
*/
static uint32_t find_sec_using_end_addr(uint32_t addr) {
/* read section data buffer size */
#define READ_BUF_SIZE 32
uint32_t sector_start = addr, data_start = addr, continue_ff = 0, read_buf_size = 0, i;
uint8_t buf[READ_BUF_SIZE];
EF_ASSERT(READ_BUF_SIZE % 4 == 0);
/* calculate the sector start and data start address */
sector_start = addr & (~(EF_ERASE_MIN_SIZE - 1));
data_start = sector_start + LOG_SECTOR_HEADER_SIZE;
/* counts continuous 0xFF which is end of sector */
while (data_start < sector_start + EF_ERASE_MIN_SIZE) {
if (data_start + READ_BUF_SIZE < sector_start + EF_ERASE_MIN_SIZE) {
read_buf_size = READ_BUF_SIZE;
} else {
read_buf_size = sector_start + EF_ERASE_MIN_SIZE - data_start;
}
ef_port_read(data_start, (uint32_t *)buf, read_buf_size);
for (i = 0; i < read_buf_size; i++) {
if (buf[i] == 0xFF) {
continue_ff++;
} else {
continue_ff = 0;
}
}
data_start += read_buf_size;
}
/* calculate current flash sector using end address */
if (continue_ff >= EF_ERASE_MIN_SIZE - LOG_SECTOR_HEADER_SIZE) {
/* from 0 to sec_size all sector is 0xFF, so the sector is empty */
return sector_start + LOG_SECTOR_HEADER_SIZE;
} else if (continue_ff >= 4) {
/* form end_addr - 4 to sec_size length all area is 0xFF, so it's used part of the sector.
* the address must be word alignment. */
if (continue_ff % 4 != 0) {
continue_ff = (continue_ff / 4 + 1) * 4;
}
return sector_start + EF_ERASE_MIN_SIZE - continue_ff;
} else {
/* all sector not has continuous 0xFF, so the sector is full */
return sector_start + EF_ERASE_MIN_SIZE;
}
}
/**
* Find the log store start address and end address.
* It's like a ring buffer implemented on flash.
* The flash log area can be in two states depending on start address and end address:
* state 1 state 2
* |============| |============|
* log area start--> |############| <-- start address |############| <-- end address
* |############| | empty |
* |------------| |------------|
* |############| |############| <-- start address
* |############| |############|
* |------------| |------------|
* | . | | . |
* | . | | . |
* | . | | . |
* |------------| |------------|
* |############| <-- end address |############|
* | empty | |############|
* log area end --> |============| |============|
*
* LOG_AREA_SIZE = log area end - log area star
*
*/
static void find_start_and_end_addr(void) {
size_t cur_size = 0;
SectorStatus cur_sec_status, last_sec_status;
uint32_t cur_using_sec_addr = 0;
/* all status sector counts */
size_t empty_sec_counts = 0, using_sec_counts = 0, full_sector_counts = 0;
/* total sector number */
size_t total_sec_num = LOG_AREA_SIZE / EF_ERASE_MIN_SIZE;
/* see comment of find_start_and_end_addr function */
uint8_t cur_log_sec_state = 0;
/* get the first sector status */
cur_sec_status = get_sector_status(log_area_start_addr);
last_sec_status = cur_sec_status;
for (cur_size = EF_ERASE_MIN_SIZE; cur_size < LOG_AREA_SIZE; cur_size += EF_ERASE_MIN_SIZE) {
/* get current sector status */
cur_sec_status = get_sector_status(log_area_start_addr + cur_size);
/* compare last and current status */
switch (last_sec_status) {
case SECTOR_STATUS_EMPUT: {
switch (cur_sec_status) {
case SECTOR_STATUS_EMPUT:
break;
case SECTOR_STATUS_USING:
EF_DEBUG("Error: Log area error! Now will clean all log area.\n");
ef_log_clean();
return;
case SECTOR_STATUS_FULL:
EF_DEBUG("Error: Log area error! Now will clean all log area.\n");
ef_log_clean();
return;
}
empty_sec_counts++;
break;
}
case SECTOR_STATUS_USING: {
switch (cur_sec_status) {
case SECTOR_STATUS_EMPUT:
/* like state 1 */
cur_log_sec_state = 1;
log_start_addr = log_area_start_addr;
cur_using_sec_addr = log_area_start_addr + cur_size - EF_ERASE_MIN_SIZE;
break;
case SECTOR_STATUS_USING:
EF_DEBUG("Error: Log area error! Now will clean all log area.\n");
ef_log_clean();
return;
case SECTOR_STATUS_FULL:
/* like state 2 */
cur_log_sec_state = 2;
log_start_addr = log_area_start_addr + cur_size;
cur_using_sec_addr = log_area_start_addr + cur_size - EF_ERASE_MIN_SIZE;
break;
}
using_sec_counts++;
break;
}
case SECTOR_STATUS_FULL: {
switch (cur_sec_status) {
case SECTOR_STATUS_EMPUT:
/* like state 1 */
if (cur_log_sec_state == 2) {
EF_DEBUG("Error: Log area error! Now will clean all log area.\n");
ef_log_clean();
return;
} else {
cur_log_sec_state = 1;
log_start_addr = log_area_start_addr;
log_end_addr = log_area_start_addr + cur_size;
cur_using_sec_addr = log_area_start_addr + cur_size - EF_ERASE_MIN_SIZE;
}
break;
case SECTOR_STATUS_USING:
if(total_sec_num <= 2) {
/* like state 1 */
cur_log_sec_state = 1;
log_start_addr = log_area_start_addr;
cur_using_sec_addr = log_area_start_addr + cur_size;
} else {
/* like state 2 when the sector is the last one */
if (cur_size + EF_ERASE_MIN_SIZE >= LOG_AREA_SIZE) {
cur_log_sec_state = 2;
log_start_addr = get_next_flash_sec_addr(log_area_start_addr + cur_size);
cur_using_sec_addr = log_area_start_addr + cur_size;
}
}
break;
case SECTOR_STATUS_FULL:
break;
}
full_sector_counts++;
break;
}
case SECTOR_STATUS_HEADER_ERROR:
EF_DEBUG("Error: Log sector header error! Now will clean all log area.\n");
ef_log_clean();
return;
}
last_sec_status = cur_sec_status;
}
/* the last sector status counts */
if (cur_sec_status == SECTOR_STATUS_EMPUT) {
empty_sec_counts++;
} else if (cur_sec_status == SECTOR_STATUS_USING) {
using_sec_counts++;
} else if (cur_sec_status == SECTOR_STATUS_FULL) {
full_sector_counts++;
} else if (cur_sec_status == SECTOR_STATUS_HEADER_ERROR) {
EF_DEBUG("Error: Log sector header error! Now will clean all log area.\n");
ef_log_clean();
return;
}
if (using_sec_counts != 1) {
/* this state is almost impossible */
EF_DEBUG("Error: There must be only one sector status is USING! Now will clean all log area.\n");
ef_log_clean();
} else {
/* find the end address */
log_end_addr = find_sec_using_end_addr(cur_using_sec_addr);
}
}
/**
* Get log used flash total size.
*
* @return log used flash total size. @note NOT contain sector headers
*/
size_t ef_log_get_used_size(void) {
size_t header_total_num = 0, physical_size = 0;
/* must be call this function after initialize OK */
if (!init_ok) {
return 0;
}
if (log_start_addr < log_end_addr) {
physical_size = log_end_addr - log_start_addr;
} else {
physical_size = LOG_AREA_SIZE - (log_start_addr - log_end_addr);
}
header_total_num = physical_size / EF_ERASE_MIN_SIZE + 1;
return physical_size - header_total_num * LOG_SECTOR_HEADER_SIZE;
}
/**
* Sequential reading log data. It will ignore sector headers.
*
* @param addr address
* @param log log buffer
* @param size log size, not contain sector headers.
*
* @return result
*/
static EfErrCode log_seq_read(uint32_t addr, uint32_t *log, size_t size) {
EfErrCode result = EF_NO_ERR;
size_t read_size = 0, read_size_temp = 0;
while (size) {
/* move to sector data address */
if ((addr + read_size) % EF_ERASE_MIN_SIZE == 0) {
addr += LOG_SECTOR_HEADER_SIZE;
}
/* calculate current sector last data size */
read_size_temp = EF_ERASE_MIN_SIZE - (addr % EF_ERASE_MIN_SIZE);
if (size < read_size_temp) {
read_size_temp = size;
}
result = ef_port_read(addr + read_size, log + read_size / 4, read_size_temp);
if (result != EF_NO_ERR) {
return result;
}
read_size += read_size_temp;
size -= read_size_temp;
}
return result;
}
/**
* Calculate flash physical address by log index.
*
* @param index log index
*
* @return flash physical address
*/
static uint32_t log_index2addr(size_t index) {
size_t header_total_offset = 0;
/* total include sector number */
size_t sector_num = index / (EF_ERASE_MIN_SIZE - LOG_SECTOR_HEADER_SIZE) + 1;
header_total_offset = sector_num * LOG_SECTOR_HEADER_SIZE;
if (log_start_addr < log_end_addr) {
return log_start_addr + index + header_total_offset;
} else {
if (log_start_addr + index + header_total_offset < log_area_start_addr + LOG_AREA_SIZE) {
return log_start_addr + index + header_total_offset;
} else {
return log_start_addr + index + header_total_offset - LOG_AREA_SIZE;
}
}
}
/**
* Read log from flash.
*
* @param index index for saved log.
* Minimum index is 0.
* Maximum index is ef_log_get_used_size() - 1.
* @param log the log which will read from flash
* @param size read bytes size
*
* @return result
*/
EfErrCode ef_log_read(size_t index, uint32_t *log, size_t size) {
EfErrCode result = EF_NO_ERR;
size_t cur_using_size = ef_log_get_used_size();
size_t read_size_temp = 0;
size_t header_total_num = 0;
if (!size) {
return result;
}
EF_ASSERT(size % 4 == 0);
EF_ASSERT(index < cur_using_size);
if (index + size > cur_using_size) {
EF_DEBUG("Warning: Log read size out of bound. Cut read size.\n");
size = cur_using_size - index;
}
/* must be call this function after initialize OK */
if (!init_ok) {
return EF_ENV_INIT_FAILED;
}
if (log_start_addr < log_end_addr) {
log_seq_read(log_index2addr(index), log, size);
} else {
if (log_index2addr(index) + size <= log_area_start_addr + LOG_AREA_SIZE) {
/* Flash log area
* |--------------|
* log_area_start_addr --> |##############|
* |##############|
* |##############|
* |--------------|
* |##############|
* |##############|
* |##############| <-- log_end_addr
* |--------------|
* log_start_addr --> |##############|
* read start --> |**************| <-- read end
* |##############|
* |--------------|
*
* read from (log_start_addr + log_index2addr(index)) to (log_start_addr + index + log_index2addr(index))
*/
result = log_seq_read(log_index2addr(index), log, size);
} else if (log_index2addr(index) < log_area_start_addr + LOG_AREA_SIZE) {
/* Flash log area
* |--------------|
* log_area_start_addr --> |**************| <-- read end
* |##############|
* |##############|
* |--------------|
* |##############|
* |##############|
* |##############| <-- log_end_addr
* |--------------|
* log_start_addr --> |##############|
* read start --> |**************|
* |**************|
* |--------------|
* read will by 2 steps
* step1: read from (log_start_addr + log_index2addr(index)) to flash log area end address
* step2: read from flash log area start address to read size's end address
*/
read_size_temp = (log_area_start_addr + LOG_AREA_SIZE) - log_index2addr(index);
header_total_num = read_size_temp / EF_ERASE_MIN_SIZE;
/* Minus some ignored bytes */
read_size_temp -= header_total_num * LOG_SECTOR_HEADER_SIZE;
result = log_seq_read(log_index2addr(index), log, read_size_temp);
if (result == EF_NO_ERR) {
result = log_seq_read(log_area_start_addr, log + read_size_temp / 4, size - read_size_temp);
}
} else {
/* Flash log area
* |--------------|
* log_area_start_addr --> |##############|
* read start --> |**************|
* |**************| <-- read end
* |--------------|
* |##############|
* |##############|
* |##############| <-- log_end_addr
* |--------------|
* log_start_addr --> |##############|
* |##############|
* |##############|
* |--------------|
* read from (log_start_addr + log_index2addr(index) - LOG_AREA_SIZE) to read size's end address
*/
result = log_seq_read(log_index2addr(index) - LOG_AREA_SIZE, log, size);
}
}
return result;
}
/**
* Write log to flash.
*
* @param log the log which will be write to flash
* @param size write bytes size
*
* @return result
*/
EfErrCode ef_log_write(const uint32_t *log, size_t size) {
EfErrCode result = EF_NO_ERR;
size_t write_size = 0, writable_size = 0;
uint32_t write_addr = log_end_addr, erase_addr;
SectorStatus sector_status;
EF_ASSERT(size % 4 == 0);
/* must be call this function after initialize OK */
if (!init_ok) {
return EF_ENV_INIT_FAILED;
}
if ((sector_status = get_sector_status(write_addr)) == SECTOR_STATUS_HEADER_ERROR) {
return EF_WRITE_ERR;
}
/* write some log when current sector status is USING and EMPTY */
if ((sector_status == SECTOR_STATUS_USING) || (sector_status == SECTOR_STATUS_EMPUT)) {
/* write the already erased but not used area */
writable_size = EF_ERASE_MIN_SIZE - ((write_addr - log_area_start_addr) % EF_ERASE_MIN_SIZE);
if (size >= writable_size) {
result = ef_port_write(write_addr, log, writable_size);
if (result != EF_NO_ERR) {
goto exit;
}
/* change the current sector status to FULL */
result = write_sector_status(write_addr, SECTOR_STATUS_FULL);
if (result != EF_NO_ERR) {
goto exit;
}
write_size += writable_size;
} else {
result = ef_port_write(write_addr, log, size);
log_end_addr = write_addr + size;
goto exit;
}
}
/* erase and write remain log */
while (true) {
/* calculate next available sector address */
erase_addr = write_addr = get_next_flash_sec_addr(write_addr - 4);
/* move the flash log start address to next available sector address */
if (log_start_addr == erase_addr) {
log_start_addr = get_next_flash_sec_addr(log_start_addr);
}
/* erase sector */
result = ef_port_erase(erase_addr, EF_ERASE_MIN_SIZE);
if (result != EF_NO_ERR) {
goto exit;
}
/* change the sector status to EMPTY and USING when write begin sector start address */
result = write_sector_status(write_addr, SECTOR_STATUS_EMPUT);
result = write_sector_status(write_addr, SECTOR_STATUS_USING);
if (result == EF_NO_ERR) {
write_addr += LOG_SECTOR_HEADER_SIZE;
} else {
goto exit;
}
/* calculate current sector writable data size */
writable_size = EF_ERASE_MIN_SIZE - LOG_SECTOR_HEADER_SIZE;
if (size - write_size >= writable_size) {
result = ef_port_write(write_addr, log + write_size / 4, writable_size);
if (result != EF_NO_ERR) {
goto exit;
}
/* change the current sector status to FULL */
result = write_sector_status(write_addr, SECTOR_STATUS_FULL);
if (result != EF_NO_ERR) {
goto exit;
}
log_end_addr = write_addr + writable_size;
write_size += writable_size;
write_addr += writable_size;
} else {
result = ef_port_write(write_addr, log + write_size / 4, size - write_size);
if (result != EF_NO_ERR) {
goto exit;
}
log_end_addr = write_addr + (size - write_size);
break;
}
}
exit:
return result;
}
/**
* Get next flash sector address.The log total sector like ring buffer which implement by flash.
*
* @param cur_addr cur flash address
*
* @return next flash sector address
*/
static uint32_t get_next_flash_sec_addr(uint32_t cur_addr) {
size_t cur_sec_id = (cur_addr - log_area_start_addr) / EF_ERASE_MIN_SIZE;
size_t sec_total_num = LOG_AREA_SIZE / EF_ERASE_MIN_SIZE;
if (cur_sec_id + 1 >= sec_total_num) {
/* return to ring head */
return log_area_start_addr;
} else {
return log_area_start_addr + (cur_sec_id + 1) * EF_ERASE_MIN_SIZE;
}
}
/**
* Clean all log which in flash.
*
* @return result
*/
EfErrCode ef_log_clean(void) {
EfErrCode result = EF_NO_ERR;
uint32_t write_addr = log_area_start_addr;
/* clean address */
log_start_addr = log_area_start_addr;
log_end_addr = log_start_addr + LOG_SECTOR_HEADER_SIZE;
/* erase log flash area */
result = ef_port_erase(log_area_start_addr, LOG_AREA_SIZE);
if (result != EF_NO_ERR) {
goto exit;
}
/* setting first sector is EMPTY to USING */
write_sector_status(write_addr, SECTOR_STATUS_EMPUT);
write_sector_status(write_addr, SECTOR_STATUS_USING);
if (result != EF_NO_ERR) {
goto exit;
}
write_addr += EF_ERASE_MIN_SIZE;
/* add sector header */
while (true) {
write_sector_status(write_addr, SECTOR_STATUS_EMPUT);
if (result != EF_NO_ERR) {
goto exit;
}
write_addr += EF_ERASE_MIN_SIZE;
if (write_addr >= log_area_start_addr + LOG_AREA_SIZE) {
break;
}
}
exit:
return result;
}
#endif /* EF_USING_LOG */
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