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rt-thread-official/components/utilities/ulog/ulog.c

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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-08-25 armink the first version
*/
#include <stdarg.h>
#include "ulog.h"
#include "rthw.h"
#ifdef ULOG_USING_SYSLOG
#include <syslog.h>
#endif
#ifdef ULOG_OUTPUT_FLOAT
#include <stdio.h>
#endif
#ifdef ULOG_TIME_USING_TIMESTAMP
#include <time.h>
#endif
#ifdef ULOG_USING_ASYNC_OUTPUT
#include <rtdevice.h>
#endif
#ifdef RT_USING_ULOG
/* the number which is max stored line logs */
#ifndef ULOG_ASYNC_OUTPUT_STORE_LINES
#define ULOG_ASYNC_OUTPUT_STORE_LINES (ULOG_ASYNC_OUTPUT_BUF_SIZE * 3 / 2 / ULOG_LINE_BUF_SIZE)
#endif
#ifdef ULOG_USING_COLOR
/**
* CSI(Control Sequence Introducer/Initiator) sign
* more information on https://en.wikipedia.org/wiki/ANSI_escape_code
*/
#define CSI_START "\033["
#define CSI_END "\033[0m"
/* output log front color */
#define F_BLACK "30m"
#define F_RED "31m"
#define F_GREEN "32m"
#define F_YELLOW "33m"
#define F_BLUE "34m"
#define F_MAGENTA "35m"
#define F_CYAN "36m"
#define F_WHITE "37m"
/* output log default color definition */
#ifndef ULOG_COLOR_DEBUG
#define ULOG_COLOR_DEBUG NULL
#endif
#ifndef ULOG_COLOR_INFO
#define ULOG_COLOR_INFO (F_GREEN)
#endif
#ifndef ULOG_COLOR_WARN
#define ULOG_COLOR_WARN (F_YELLOW)
#endif
#ifndef ULOG_COLOR_ERROR
#define ULOG_COLOR_ERROR (F_RED)
#endif
#ifndef ULOG_COLOR_ASSERT
#define ULOG_COLOR_ASSERT (F_MAGENTA)
#endif
#endif /* ULOG_USING_COLOR */
#if ULOG_LINE_BUF_SIZE < 80
#error "the log line buffer size must more than 80"
#endif
/* tag's level filter */
struct tag_lvl_filter
{
char tag[ULOG_FILTER_TAG_MAX_LEN + 1];
rt_uint32_t level;
rt_slist_t list;
};
typedef struct tag_lvl_filter *tag_lvl_filter_t;
struct rt_ulog
{
rt_bool_t init_ok;
struct rt_mutex output_locker;
/* all backends */
rt_slist_t backend_list;
/* the thread log's line buffer */
char log_buf_th[ULOG_LINE_BUF_SIZE];
#ifdef ULOG_USING_ISR_LOG
/* the ISR log's line buffer */
rt_base_t output_locker_isr_lvl;
char log_buf_isr[ULOG_LINE_BUF_SIZE];
#endif /* ULOG_USING_ISR_LOG */
#ifdef ULOG_USING_ASYNC_OUTPUT
rt_rbb_t async_rbb;
rt_thread_t async_th;
struct rt_semaphore async_notice;
#endif
#ifdef ULOG_USING_FILTER
struct
{
/* all tag's level filter */
rt_slist_t tag_lvl_list;
/* global filter level, tag and keyword */
rt_uint32_t level;
char tag[ULOG_FILTER_TAG_MAX_LEN + 1];
char keyword[ULOG_FILTER_KW_MAX_LEN + 1];
} filter;
#endif /* ULOG_USING_FILTER */
};
/* level output info */
static const char * const level_output_info[] =
{
"A/",
NULL,
NULL,
"E/",
"W/",
NULL,
"I/",
"D/",
};
#ifdef ULOG_USING_COLOR
/* color output info */
static const char * const color_output_info[] =
{
ULOG_COLOR_ASSERT,
NULL,
NULL,
ULOG_COLOR_ERROR,
ULOG_COLOR_WARN,
NULL,
ULOG_COLOR_INFO,
ULOG_COLOR_DEBUG,
};
#endif /* ULOG_USING_COLOR */
/* ulog local object */
static struct rt_ulog ulog = { 0 };
size_t ulog_strcpy(size_t cur_len, char *dst, const char *src)
{
const char *src_old = src;
RT_ASSERT(dst);
RT_ASSERT(src);
while (*src != 0)
{
/* make sure destination has enough space */
if (cur_len++ <= ULOG_LINE_BUF_SIZE)
{
*dst++ = *src++;
}
else
{
break;
}
}
return src - src_old;
}
size_t ulog_ultoa(char *s, unsigned long int n)
{
size_t i = 0, j = 0, len = 0;
char swap;
do
{
s[len++] = n % 10 + '0';
} while (n /= 10);
s[len] = '\0';
/* reverse string */
for (i = 0, j = len - 1; i < j; ++i, --j)
{
swap = s[i];
s[i] = s[j];
s[j] = swap;
}
return len;
}
static void output_unlock(void)
{
/* is in thread context */
if (rt_interrupt_get_nest() == 0)
{
rt_mutex_release(&ulog.output_locker);
}
else
{
#ifdef ULOG_USING_ISR_LOG
rt_hw_interrupt_enable(ulog.output_locker_isr_lvl);
#endif
}
}
static void output_lock(void)
{
/* is in thread context */
if (rt_interrupt_get_nest() == 0)
{
rt_mutex_take(&ulog.output_locker, RT_WAITING_FOREVER);
}
else
{
#ifdef ULOG_USING_ISR_LOG
ulog.output_locker_isr_lvl = rt_hw_interrupt_disable();
#endif
}
}
static char *get_log_buf(void)
{
/* is in thread context */
if (rt_interrupt_get_nest() == 0)
{
return ulog.log_buf_th;
}
else
{
#ifdef ULOG_USING_ISR_LOG
return ulog.log_buf_isr;
#else
rt_kprintf("Error: Current mode not supported run in ISR. Please enable ULOG_USING_ISR_LOG.\n");
return NULL;
#endif
}
}
RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *tag, rt_bool_t newline,
const char *format, va_list args)
{
/* the caller has locker, so it can use static variable for reduce stack usage */
static rt_size_t log_len, newline_len;
static int fmt_result;
RT_ASSERT(log_buf);
RT_ASSERT(level <= LOG_LVL_DBG);
RT_ASSERT(tag);
RT_ASSERT(format);
log_len = 0;
newline_len = rt_strlen(ULOG_NEWLINE_SIGN);
#ifdef ULOG_USING_COLOR
/* add CSI start sign and color info */
if (color_output_info[level])
{
log_len += ulog_strcpy(log_len, log_buf + log_len, CSI_START);
log_len += ulog_strcpy(log_len, log_buf + log_len, color_output_info[level]);
}
#endif /* ULOG_USING_COLOR */
#ifdef ULOG_OUTPUT_TIME
/* add time info */
{
#ifdef ULOG_TIME_USING_TIMESTAMP
static time_t now;
static struct tm *tm, tm_tmp;
now = time(NULL);
tm = gmtime_r(&now, &tm_tmp);
#ifdef RT_USING_SOFT_RTC
rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, "%02d-%02d %02d:%02d:%02d.%03d", tm->tm_mon + 1,
tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec, rt_tick_get() % 1000);
#else
rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, "%02d-%02d %02d:%02d:%02d", tm->tm_mon + 1,
tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
#endif /* RT_USING_SOFT_RTC */
#else
static rt_size_t tick_len = 0;
log_buf[log_len] = '[';
tick_len = ulog_ultoa(log_buf + log_len + 1, rt_tick_get());
log_buf[log_len + 1 + tick_len] = ']';
log_buf[log_len + 1 + tick_len + 1] = '\0';
#endif /* ULOG_TIME_USING_TIMESTAMP */
log_len += rt_strlen(log_buf + log_len);
}
#endif /* ULOG_OUTPUT_TIME */
#ifdef ULOG_OUTPUT_LEVEL
#ifdef ULOG_OUTPUT_TIME
log_len += ulog_strcpy(log_len, log_buf + log_len, " ");
#endif
/* add level info */
log_len += ulog_strcpy(log_len, log_buf + log_len, level_output_info[level]);
#endif /* ULOG_OUTPUT_LEVEL */
#ifdef ULOG_OUTPUT_TAG
#if !defined(ULOG_OUTPUT_LEVEL) && defined(ULOG_OUTPUT_TIME)
log_len += ulog_strcpy(log_len, log_buf + log_len, " ");
#endif
/* add tag info */
log_len += ulog_strcpy(log_len, log_buf + log_len, tag);
#endif /* ULOG_OUTPUT_TAG */
#ifdef ULOG_OUTPUT_THREAD_NAME
/* add thread info */
{
#if defined(ULOG_OUTPUT_TIME) || defined(ULOG_OUTPUT_LEVEL) || defined(ULOG_OUTPUT_TAG)
log_len += ulog_strcpy(log_len, log_buf + log_len, " ");
#endif
/* is not in interrupt context */
if (rt_interrupt_get_nest() == 0)
{
log_len += ulog_strcpy(log_len, log_buf + log_len, rt_thread_self()->name);
}
else
{
log_len += ulog_strcpy(log_len, log_buf + log_len, "ISR");
}
}
#endif /* ULOG_OUTPUT_THREAD_NAME */
log_len += ulog_strcpy(log_len, log_buf + log_len, ": ");
#ifdef ULOG_OUTPUT_FLOAT
fmt_result = vsnprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, format, args);
#else
fmt_result = rt_vsnprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, format, args);
#endif /* ULOG_OUTPUT_FLOAT */
/* calculate log length */
if ((log_len + fmt_result <= ULOG_LINE_BUF_SIZE) && (fmt_result > -1))
{
log_len += fmt_result;
}
else
{
/* using max length */
log_len = ULOG_LINE_BUF_SIZE;
}
/* overflow check and reserve some space for CSI end sign and newline sign */
#ifdef ULOG_USING_COLOR
if (log_len + (sizeof(CSI_END) - 1) + newline_len > ULOG_LINE_BUF_SIZE)
{
/* using max length */
log_len = ULOG_LINE_BUF_SIZE;
/* reserve some space for CSI end sign */
log_len -= (sizeof(CSI_END) - 1);
#else
if (log_len + newline_len > ULOG_LINE_BUF_SIZE)
{
/* using max length */
log_len = ULOG_LINE_BUF_SIZE;
#endif /* ULOG_USING_COLOR */
/* reserve some space for newline sign */
log_len -= newline_len;
}
/* package newline sign */
if (newline)
{
log_len += ulog_strcpy(log_len, log_buf + log_len, ULOG_NEWLINE_SIGN);
}
#ifdef ULOG_USING_COLOR
/* add CSI end sign */
if (color_output_info[level])
{
log_len += ulog_strcpy(log_len, log_buf + log_len, CSI_END);
}
#endif /* ULOG_USING_COLOR */
return log_len;
}
void ulog_output_to_all_backend(rt_uint32_t level, const char *tag, rt_bool_t is_raw, const char *log, rt_size_t size)
{
rt_slist_t *node;
ulog_backend_t backend;
if (!ulog.init_ok)
return;
/* output for all backends */
for (node = rt_slist_first(&ulog.backend_list); node; node = rt_slist_next(node))
{
backend = rt_slist_entry(node, struct ulog_backend, list);
#if !defined(ULOG_USING_COLOR) || defined(ULOG_USING_SYSLOG)
backend->output(backend, level, tag, is_raw, log, size);
#else
if (backend->support_color)
{
backend->output(backend, level, tag, is_raw, log, size);
}
else
{
/* recalculate the log start address and log size when backend not supported color */
rt_size_t color_info_len = rt_strlen(color_output_info[level]);
if (color_info_len)
{
rt_size_t color_hdr_len = rt_strlen(CSI_START) + color_info_len;
log += color_hdr_len;
size -= (color_hdr_len + (sizeof(CSI_END) - 1));
}
backend->output(backend, level, tag, is_raw, log, size);
}
#endif /* !defined(ULOG_USING_COLOR) || defined(ULOG_USING_SYSLOG) */
}
}
static void do_output(rt_uint32_t level, const char *tag, rt_bool_t is_raw, const char *log_buf, rt_size_t log_len)
{
#ifdef ULOG_USING_ASYNC_OUTPUT
rt_rbb_blk_t log_blk;
ulog_frame_t log_frame;
/* allocate log frame */
log_blk = rt_rbb_blk_alloc(ulog.async_rbb, RT_ALIGN(sizeof(struct ulog_frame) + log_len, RT_ALIGN_SIZE));
if (log_blk)
{
/* package the log frame */
log_frame = (ulog_frame_t) log_blk->buf;
log_frame->magic = ULOG_FRAME_MAGIC;
log_frame->is_raw = is_raw;
log_frame->level = level;
log_frame->log_len = log_len;
log_frame->tag = tag;
log_frame->log = (const char *)log_blk->buf + sizeof(struct ulog_frame);
/* copy log data */
rt_memcpy(log_blk->buf + sizeof(struct ulog_frame), log_buf, log_len);
/* put the block */
rt_rbb_blk_put(log_blk);
/* send a notice */
rt_sem_release(&ulog.async_notice);
}
else
{
static rt_bool_t already_output = RT_FALSE;
if (already_output == RT_FALSE)
{
rt_kprintf("Warning: There is no enough buffer for saving async log,"
" please increase the ULOG_ASYNC_OUTPUT_BUF_SIZE option.\n");
already_output = RT_TRUE;
}
}
#else
/* is in thread context */
if (rt_interrupt_get_nest() == 0)
{
/* output to all backends */
ulog_output_to_all_backend(level, tag, is_raw, log_buf, log_len);
}
else
{
#ifdef ULOG_BACKEND_USING_CONSOLE
/* We can't ensure that all backends support ISR context output.
* So only using rt_kprintf when context is ISR */
extern void ulog_console_backend_output(struct ulog_backend *backend, rt_uint32_t level, const char *tag,
rt_bool_t is_raw, const char *log, size_t len);
ulog_console_backend_output(NULL, level, tag, is_raw, log_buf, log_len);
#endif /* ULOG_BACKEND_USING_CONSOLE */
}
#endif /* ULOG_USING_ASYNC_OUTPUT */
}
/**
* output the log by variable argument list
*
* @param level level
* @param tag tag
* @param newline has_newline
* @param format output format
* @param args variable argument list
*/
void ulog_voutput(rt_uint32_t level, const char *tag, rt_bool_t newline, const char *format, va_list args)
{
char *log_buf = NULL;
rt_size_t log_len = 0;
#ifndef ULOG_USING_SYSLOG
RT_ASSERT(level <= LOG_LVL_DBG);
#else
RT_ASSERT(LOG_PRI(level) <= LOG_DEBUG);
#endif /* ULOG_USING_SYSLOG */
RT_ASSERT(tag);
RT_ASSERT(format);
if (!ulog.init_ok)
{
return;
}
#ifdef ULOG_USING_FILTER
/* level filter */
#ifndef ULOG_USING_SYSLOG
if (level > ulog.filter.level || level > ulog_tag_lvl_filter_get(tag))
{
return;
}
#else
if (((LOG_MASK(LOG_PRI(level)) & ulog.filter.level) == 0)
|| ((LOG_MASK(LOG_PRI(level)) & ulog_tag_lvl_filter_get(tag)) == 0))
{
return;
}
#endif /* ULOG_USING_SYSLOG */
else if (!rt_strstr(tag, ulog.filter.tag))
{
/* tag filter */
return;
}
#endif /* ULOG_USING_FILTER */
/* get log buffer */
log_buf = get_log_buf();
/* lock output */
output_lock();
#ifndef ULOG_USING_SYSLOG
log_len = ulog_formater(log_buf, level, tag, newline, format, args);
#else
extern rt_size_t syslog_formater(char *log_buf, rt_uint8_t level, const char *tag, rt_bool_t newline, const char *format, va_list args);
log_len = syslog_formater(log_buf, level, tag, newline, format, args);
#endif /* ULOG_USING_SYSLOG */
#ifdef ULOG_USING_FILTER
/* keyword filter */
if (ulog.filter.keyword[0] != '\0')
{
/* add string end sign */
log_buf[log_len] = '\0';
/* find the keyword */
if (!rt_strstr(log_buf, ulog.filter.keyword))
{
/* unlock output */
output_unlock();
return;
}
}
#endif /* ULOG_USING_FILTER */
/* do log output */
do_output(level, tag, RT_FALSE, log_buf, log_len);
/* unlock output */
output_unlock();
}
/**
* output the log
*
* @param level level
* @param tag tag
* @param newline has newline
* @param format output format
* @param ... args
*/
void ulog_output(rt_uint32_t level, const char *tag, rt_bool_t newline, const char *format, ...)
{
va_list args;
/* args point to the first variable parameter */
va_start(args, format);
ulog_voutput(level, tag, newline, format, args);
va_end(args);
}
/**
* output RAW string format log
*
* @param format output format
* @param ... args
*/
void ulog_raw(const char *format, ...)
{
rt_size_t log_len = 0;
char *log_buf = NULL;
va_list args;
int fmt_result;
RT_ASSERT(ulog.init_ok);
/* get log buffer */
log_buf = get_log_buf();
/* lock output */
output_lock();
/* args point to the first variable parameter */
va_start(args, format);
#ifdef ULOG_OUTPUT_FLOAT
fmt_result = vsnprintf(log_buf, ULOG_LINE_BUF_SIZE, format, args);
#else
fmt_result = rt_vsnprintf(log_buf, ULOG_LINE_BUF_SIZE, format, args);
#endif /* ULOG_OUTPUT_FLOAT */
va_end(args);
/* calculate log length */
if ((fmt_result > -1) && (fmt_result <= ULOG_LINE_BUF_SIZE))
{
log_len = fmt_result;
}
else
{
log_len = ULOG_LINE_BUF_SIZE;
}
/* do log output */
do_output(LOG_LVL_DBG, NULL, RT_TRUE, log_buf, log_len);
/* unlock output */
output_unlock();
}
/**
* dump the hex format data to log
*
* @param name name for hex object, it will show on log header
* @param width hex number for every line, such as: 16, 32
* @param buf hex buffer
* @param size buffer size
*/
void ulog_hexdump(const char *name, rt_size_t width, rt_uint8_t *buf, rt_size_t size)
{
#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
rt_size_t i, j;
rt_size_t log_len = 0, name_len = rt_strlen(name);
char *log_buf = NULL, dump_string[8];
int fmt_result;
RT_ASSERT(ulog.init_ok);
#ifdef ULOG_USING_FILTER
/* level filter */
#ifndef ULOG_USING_SYSLOG
if (LOG_LVL_DBG > ulog.filter.level)
{
return;
}
#else
if ((LOG_MASK(LOG_DEBUG) & ulog.filter.level) == 0)
{
return;
}
#endif /* ULOG_USING_SYSLOG */
#endif /* ULOG_USING_FILTER */
/* get log buffer */
log_buf = get_log_buf();
/* lock output */
output_lock();
for (i = 0, log_len = 0; i < size; i += width)
{
/* package header */
if (i == 0)
{
log_len += ulog_strcpy(log_len, log_buf + log_len, "D/HEX ");
log_len += ulog_strcpy(log_len, log_buf + log_len, name);
log_len += ulog_strcpy(log_len, log_buf + log_len, ": ");
}
else
{
log_len = 6 + name_len + 2;
rt_memset(log_buf, ' ', log_len);
}
fmt_result = rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE, "%04X-%04X: ", i, i + width);
/* calculate log length */
if ((fmt_result > -1) && (fmt_result <= ULOG_LINE_BUF_SIZE))
{
log_len += fmt_result;
}
else
{
log_len = ULOG_LINE_BUF_SIZE;
}
/* dump hex */
for (j = 0; j < width; j++)
{
if (i + j < size)
{
rt_snprintf(dump_string, sizeof(dump_string), "%02X ", buf[i + j]);
}
else
{
rt_strncpy(dump_string, " ", sizeof(dump_string));
}
log_len += ulog_strcpy(log_len, log_buf + log_len, dump_string);
if ((j + 1) % 8 == 0)
{
log_len += ulog_strcpy(log_len, log_buf + log_len, " ");
}
}
log_len += ulog_strcpy(log_len, log_buf + log_len, " ");
/* dump char for hex */
for (j = 0; j < width; j++)
{
if (i + j < size)
{
rt_snprintf(dump_string, sizeof(dump_string), "%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
log_len += ulog_strcpy(log_len, log_buf + log_len, dump_string);
}
}
/* overflow check and reserve some space for newline sign */
if (log_len + rt_strlen(ULOG_NEWLINE_SIGN) > ULOG_LINE_BUF_SIZE)
{
log_len = ULOG_LINE_BUF_SIZE - rt_strlen(ULOG_NEWLINE_SIGN);
}
/* package newline sign */
log_len += ulog_strcpy(log_len, log_buf + log_len, ULOG_NEWLINE_SIGN);
/* do log output */
do_output(LOG_LVL_DBG, NULL, RT_TRUE, log_buf, log_len);
}
/* unlock output */
output_unlock();
}
#ifdef ULOG_USING_FILTER
/**
* Set the filter's level by different tag.
* The log on this tag which level is less than it will stop output.
*
* example:
* // the example tag log enter silent mode
* ulog_set_filter_lvl("example", LOG_FILTER_LVL_SILENT);
* // the example tag log which level is less than INFO level will stop output
* ulog_set_filter_lvl("example", LOG_LVL_INFO);
* // remove example tag's level filter, all level log will resume output
* ulog_set_filter_lvl("example", LOG_FILTER_LVL_ALL);
*
* @param tag log tag
* @param level The filter level. When the level is LOG_FILTER_LVL_SILENT, the log enter silent mode.
* When the level is LOG_FILTER_LVL_ALL, it will remove this tag's level filer.
* Then all level log will resume output.
*
* @return 0: success
* -5: no memory
*/
int ulog_tag_lvl_filter_set(const char *tag, rt_uint32_t level)
{
rt_slist_t *node;
tag_lvl_filter_t tag_lvl = NULL;
int result = RT_EOK;
RT_ASSERT(level <= LOG_FILTER_LVL_ALL);
if (!ulog.init_ok)
return result;
/* lock output */
output_lock();
/* find the tag in list */
for (node = rt_slist_first(&ulog.filter.tag_lvl_list); node; node = rt_slist_next(node))
{
tag_lvl = rt_slist_entry(node, struct tag_lvl_filter, list);
if (!rt_strncmp(tag_lvl->tag, tag, ULOG_FILTER_TAG_MAX_LEN))
{
break;
}
else
{
tag_lvl = NULL;
}
}
/* find OK */
if (tag_lvl)
{
if (level == LOG_FILTER_LVL_ALL)
{
/* remove current tag's level filter when input level is the lowest level */
rt_slist_remove(&ulog.filter.tag_lvl_list, &tag_lvl->list);
rt_free(tag_lvl);
}
else
{
/* update level */
tag_lvl->level = level;
}
}
else
{
/* only add the new tag's level filer when level is not LOG_FILTER_LVL_ALL */
if (level != LOG_FILTER_LVL_ALL)
{
/* new a tag's level filter */
tag_lvl = (tag_lvl_filter_t)rt_malloc(sizeof(struct tag_lvl_filter));
if (tag_lvl)
{
rt_memset(tag_lvl->tag, 0 , sizeof(tag_lvl->tag));
rt_strncpy(tag_lvl->tag, tag, ULOG_FILTER_TAG_MAX_LEN);
tag_lvl->level = level;
rt_slist_append(&ulog.filter.tag_lvl_list, &tag_lvl->list);
}
else
{
result = -RT_ENOMEM;
}
}
}
/* unlock output */
output_unlock();
return result;
}
/**
* get the level on tag's level filer
*
* @param tag log tag
*
* @return It will return the lowest level when tag was not found.
* Other level will return when tag was found.
*/
rt_uint32_t ulog_tag_lvl_filter_get(const char *tag)
{
rt_slist_t *node;
tag_lvl_filter_t tag_lvl = NULL;
rt_uint32_t level = LOG_FILTER_LVL_ALL;
if (!ulog.init_ok)
return level;
/* lock output */
output_lock();
/* find the tag in list */
for (node = rt_slist_first(&ulog.filter.tag_lvl_list); node; node = rt_slist_next(node))
{
tag_lvl = rt_slist_entry(node, struct tag_lvl_filter, list);
if (!rt_strncmp(tag_lvl->tag, tag, ULOG_FILTER_TAG_MAX_LEN))
{
level = tag_lvl->level;
break;
}
}
/* unlock output */
output_unlock();
return level;
}
/**
* set log global filter level
*
* @param level log level: LOG_LVL_ASSERT, LOG_LVL_ERROR, LOG_LVL_WARNING, LOG_LVL_INFO, LOG_LVL_DBG
* LOG_FILTER_LVL_SILENT: disable all log output, except assert level
* LOG_FILTER_LVL_ALL: enable all log output
*/
void ulog_global_filter_lvl_set(rt_uint32_t level)
{
RT_ASSERT(level <= LOG_FILTER_LVL_ALL);
ulog.filter.level = level;
}
/**
* set log global filter tag
*
* @param tag tag
*/
void ulog_global_filter_tag_set(const char *tag)
{
RT_ASSERT(tag);
rt_strncpy(ulog.filter.tag, tag, ULOG_FILTER_TAG_MAX_LEN);
}
/**
* set log global filter keyword
*
* @param keyword keyword
*/
void ulog_global_filter_kw_set(const char *keyword)
{
RT_ASSERT(keyword);
rt_strncpy(ulog.filter.keyword, keyword, ULOG_FILTER_KW_MAX_LEN);
}
#if defined(RT_USING_FINSH) && defined(FINSH_USING_MSH)
#include <finsh.h>
static void ulog_tag_lvl(uint8_t argc, char **argv)
{
if (argc > 2)
{
if ((atoi(argv[2]) <= LOG_FILTER_LVL_ALL) && (atoi(argv[2]) >= 0))
{
ulog_tag_lvl_filter_set(argv[1], atoi(argv[2]));
}
else
{
rt_kprintf("Please input correct level (0-%d).\n", LOG_FILTER_LVL_ALL);
}
}
else
{
rt_kprintf("Please input: ulog_tag_lvl <tag> <level>.\n");
#ifndef ULOG_USING_SYSLOG
rt_kprintf("Assert : 0\n");
rt_kprintf("Error : 3\n");
rt_kprintf("Warning : 4\n");
rt_kprintf("Info : 6\n");
rt_kprintf("Debug : 7\n");
#else
rt_kprintf("EMERG : 1 (1 << 0)\n");
rt_kprintf("ALERT : 2 (1 << 1)\n");
rt_kprintf("CRIT : 4 (1 << 2)\n");
rt_kprintf("ERR : 8 (1 << 3)\n");
rt_kprintf("WARNING : 16 (1 << 4)\n");
rt_kprintf("NOTICE : 32 (1 << 5)\n");
rt_kprintf("INFO : 64 (1 << 6)\n");
rt_kprintf("DEBUG : 128 (1 << 7)\n");
#endif /* ULOG_USING_SYSLOG */
}
}
MSH_CMD_EXPORT(ulog_tag_lvl, Set ulog filter level by different tag.);
static void ulog_lvl(uint8_t argc, char **argv)
{
if (argc > 1)
{
if ((atoi(argv[1]) <= LOG_FILTER_LVL_ALL) && (atoi(argv[1]) >= 0))
{
ulog_global_filter_lvl_set(atoi(argv[1]));
}
else
{
rt_kprintf("Please input correct level (0-%d).\n", LOG_FILTER_LVL_ALL);
}
}
else
{
rt_kprintf("Please input: ulog_lvl <level>.\n");
#ifndef ULOG_USING_SYSLOG
rt_kprintf("Assert : 0\n");
rt_kprintf("Error : 3\n");
rt_kprintf("Warning : 4\n");
rt_kprintf("Info : 6\n");
rt_kprintf("Debug : 7\n");
#else
rt_kprintf("EMERG : 1 (1 << 0)\n");
rt_kprintf("ALERT : 2 (1 << 1)\n");
rt_kprintf("CRIT : 4 (1 << 2)\n");
rt_kprintf("ERR : 8 (1 << 3)\n");
rt_kprintf("WARNING : 16 (1 << 4)\n");
rt_kprintf("NOTICE : 32 (1 << 5)\n");
rt_kprintf("INFO : 64 (1 << 6)\n");
rt_kprintf("DEBUG : 128 (1 << 7)\n");
#endif /* ULOG_USING_SYSLOG */
}
}
MSH_CMD_EXPORT(ulog_lvl, Set ulog global filter level.);
static void ulog_tag(uint8_t argc, char **argv)
{
if (argc > 1)
{
if (rt_strlen(argv[1]) <= ULOG_FILTER_TAG_MAX_LEN)
{
ulog_global_filter_tag_set(argv[1]);
}
else
{
rt_kprintf("The tag length is too long. Max is %d.\n", ULOG_FILTER_TAG_MAX_LEN);
}
}
else
{
ulog_global_filter_tag_set("");
}
}
MSH_CMD_EXPORT(ulog_tag, Set ulog global filter tag);
static void ulog_kw(uint8_t argc, char **argv)
{
if (argc > 1)
{
if (rt_strlen(argv[1]) <= ULOG_FILTER_KW_MAX_LEN)
{
ulog_global_filter_kw_set(argv[1]);
}
else
{
rt_kprintf("The keyword length is too long. Max is %d.\n", ULOG_FILTER_KW_MAX_LEN);
}
}
else
{
ulog_global_filter_kw_set("");
}
}
MSH_CMD_EXPORT(ulog_kw, Set ulog global filter keyword);
#endif /* defined(RT_USING_FINSH) && defined(FINSH_USING_MSH) */
#endif /* ULOG_USING_FILTER */
rt_err_t ulog_backend_register(ulog_backend_t backend, const char *name, rt_bool_t support_color)
{
rt_base_t level;
RT_ASSERT(backend);
RT_ASSERT(name);
RT_ASSERT(ulog.init_ok);
RT_ASSERT(backend->output);
if (backend->init)
{
backend->init(backend);
}
backend->support_color = support_color;
rt_memcpy(backend->name, name, RT_NAME_MAX);
level = rt_hw_interrupt_disable();
rt_slist_append(&ulog.backend_list, &backend->list);
rt_hw_interrupt_enable(level);
return RT_EOK;
}
rt_err_t ulog_backend_unregister(ulog_backend_t backend)
{
rt_base_t level;
RT_ASSERT(backend);
RT_ASSERT(ulog.init_ok);
if (backend->deinit)
{
backend->deinit(backend);
}
level = rt_hw_interrupt_disable();
rt_slist_remove(&ulog.backend_list, &backend->list);
rt_hw_interrupt_enable(level);
return RT_EOK;
}
#ifdef ULOG_USING_ASYNC_OUTPUT
/**
* asynchronous output logs to all backends
*
* @note you must call this function when ULOG_ASYNC_OUTPUT_BY_THREAD is disable
*/
void ulog_async_output(void)
{
rt_rbb_blk_t log_blk;
ulog_frame_t log_frame;
while ((log_blk = rt_rbb_blk_get(ulog.async_rbb)) != NULL)
{
log_frame = (ulog_frame_t) log_blk->buf;
if (log_frame->magic == ULOG_FRAME_MAGIC)
{
/* output to all backends */
ulog_output_to_all_backend(log_frame->level, log_frame->tag, log_frame->is_raw, log_frame->log,
log_frame->log_len);
}
rt_rbb_blk_free(ulog.async_rbb, log_blk);
}
}
/**
* waiting for get asynchronous output log
*
* @param time the waiting time
*/
void ulog_async_waiting_log(rt_int32_t time)
{
rt_sem_control(&ulog.async_notice, RT_IPC_CMD_RESET, RT_NULL);
rt_sem_take(&ulog.async_notice, time);
}
static void async_output_thread_entry(void *param)
{
while (1)
{
ulog_async_waiting_log(RT_WAITING_FOREVER);
ulog_async_output();
}
}
#endif /* ULOG_USING_ASYNC_OUTPUT */
/**
* flush all backends's log
*/
void ulog_flush(void)
{
rt_slist_t *node;
ulog_backend_t backend;
if (!ulog.init_ok)
return;
#ifdef ULOG_USING_ASYNC_OUTPUT
ulog_async_output();
#endif
/* flush all backends */
for (node = rt_slist_first(&ulog.backend_list); node; node = rt_slist_next(node))
{
backend = rt_slist_entry(node, struct ulog_backend, list);
if (backend->flush)
{
backend->flush(backend);
}
}
}
int ulog_init(void)
{
if (ulog.init_ok)
return 0;
rt_mutex_init(&ulog.output_locker, "ulog lock", RT_IPC_FLAG_FIFO);
rt_slist_init(&ulog.backend_list);
#ifdef ULOG_USING_FILTER
rt_slist_init(&ulog.filter.tag_lvl_list);
#endif
#ifdef ULOG_USING_ASYNC_OUTPUT
RT_ASSERT(ULOG_ASYNC_OUTPUT_STORE_LINES >= 2);
/* async output ring block buffer */
ulog.async_rbb = rt_rbb_create(RT_ALIGN(ULOG_ASYNC_OUTPUT_BUF_SIZE, RT_ALIGN_SIZE), ULOG_ASYNC_OUTPUT_STORE_LINES);
if (ulog.async_rbb == NULL)
{
rt_kprintf("Error: ulog init failed! No memory for async rbb.\n");
rt_mutex_detach(&ulog.output_locker);
return -RT_ENOMEM;
}
/* async output thread */
ulog.async_th = rt_thread_create("ulog_async", async_output_thread_entry, &ulog, ULOG_ASYNC_OUTPUT_THREAD_STACK,
ULOG_ASYNC_OUTPUT_THREAD_PRIORITY, 20);
if (ulog.async_th == NULL)
{
rt_kprintf("Error: ulog init failed! No memory for async output thread.\n");
rt_mutex_detach(&ulog.output_locker);
rt_rbb_destroy(ulog.async_rbb);
return -RT_ENOMEM;
}
rt_sem_init(&ulog.async_notice, "ulog", 0, RT_IPC_FLAG_FIFO);
/* async output thread startup */
rt_thread_startup(ulog.async_th);
#endif /* ULOG_USING_ASYNC_OUTPUT */
#ifdef ULOG_USING_FILTER
ulog_global_filter_lvl_set(LOG_FILTER_LVL_ALL);
#endif
ulog.init_ok = RT_TRUE;
return 0;
}
INIT_PREV_EXPORT(ulog_init);
void ulog_deinit(void)
{
rt_slist_t *node;
ulog_backend_t backend;
if (!ulog.init_ok)
return;
/* deinit all backends */
for (node = rt_slist_first(&ulog.backend_list); node; node = rt_slist_next(node))
{
backend = rt_slist_entry(node, struct ulog_backend, list);
if (backend->deinit)
{
backend->deinit(backend);
}
}
#ifdef ULOG_USING_FILTER
/* deinit tag's level filter */
{
tag_lvl_filter_t tag_lvl;
for (node = rt_slist_first(&ulog.filter.tag_lvl_list); node; node = rt_slist_next(node))
{
tag_lvl = rt_slist_entry(node, struct tag_lvl_filter, list);
rt_free(tag_lvl);
}
}
#endif /* ULOG_USING_FILTER */
rt_mutex_detach(&ulog.output_locker);
#ifdef ULOG_USING_ASYNC_OUTPUT
rt_rbb_destroy(ulog.async_rbb);
rt_thread_delete(ulog.async_th);
#endif
ulog.init_ok = RT_FALSE;
}
#endif /* RT_USING_ULOG */
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