Linux ------- 打印调试管理

mytomorrow · 发表于 2019-8-1 10:46

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#ifndef _DEBUG_MANAGE_H_
#define _DEBUG_MANAGE_H_
/* 信息的调试级别,数值起小级别越高 */
#define APP_EMERG "<0>" /* system is unusable */
#define APP_ALERT "<1>" /* action must be taken immediately */
#define APP_CRIT "<2>" /* critical conditions */
#define APP_ERR "<3>" /* error conditions */
#define APP_WARNING "<4>" /* warning conditions */
#define APP_NOTICE "<5>" /* normal but significant condition */
#define APP_INFO "<6>" /* informational */
#define APP_DEBUG "<7>" /* debug-level messages */
/* 信息的默认调试级别 */
#define DEFAULT_DBGLEVEL 4
typedef struct debug_opt
{
char *name;
int is_can_use;
int (*debug_init)(void); /* 调试模块的初始化函数 */
int (*debug_exit)(void); /* 退出函数 */
int (*debug_print)(char *data); /* 输出函数 */
struct debug_opt *next;
} debug_opt_t, *debug_t;
int DebugRegister(debug_t node);
void DebugShow(void);
debug_t DebugGet(char *name);
int DebugSetLevel(char *buffer);
int DebugSetChannel(char *buffer);
int DebugInit(void);
int DebugPrint(const char *format, ...);
int DebugChannelInit(void);
int StdoutInit(void);
#endif /* _DEBUG_MANAGE_H_ */2 A) }$ K( D" g% Q) ^

#include "debug_manage.h"
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
static debug_t head;
static int debug_leval_limit = DEFAULT_DBGLEVEL;
int DebugRegister(debug_t node)
{
debug_t point;
if(!head)
{
head = node;
head->next = NULL;
}
else
{
point = head;
while(point->next)
{
point = point->next;
}
point->next = node;
node->next = NULL;
}
return 1;
}
void DebugShow(void)
{
int i = 0;
debug_t point = head;
while(point)
{
DebugPrint("%02d %s\n", i++, point->name);
point = point->next;
}
}
debug_t DebugGet(char * name)
{
debug_t point = head;
while(point)
{
if(strcmp(point->name, name) == 0)
{
return point;
}
point = point->next;
}
return NULL;
}
int DebugSetLevel(char * buffer)
{
debug_leval_limit = buffer[9] - '0';
printf("debug_leval_limit = %d\r\n", debug_leval_limit);
return 0;
}
int DebugSetChannel(char * buffer)
{
char *temp, name[100];
debug_t point;
temp = strchr(buffer, '=');
if(!temp)
{
return -1;
}
else
{
strncpy(name, buffer, temp - buffer);
name[temp - buffer] = '\0';
point = DebugGet(name);
if(!point)
{
return -1;
}
if(temp[1] == '0')
{
point->is_can_use = 0;
}
else
{
point->is_can_use = 1;
}
return 0;
}
}
int DebugPrint(const char * format, ...)
{
char buffer[1000];
char *temp;
va_list list;
int num;
debug_t point = head;
int debug_level = DEFAULT_DBGLEVEL;
/* 可变参数的处理, 抄自glibc的printf函数 */
va_start (list, format);
num = vsprintf (buffer, format, list);
va_end (list);
buffer[num] = '\0';
temp = buffer;
/* 根据打印级别决定是否打印 */
if ((buffer[0] == '<') && (buffer[2] == '>'))
{
debug_level = buffer[1] - '0';
if (debug_level >= 0 && debug_level <= 9)
{
temp = buffer + 3;
}
else
{
debug_level = DEFAULT_DBGLEVEL;
}
}
if (debug_level >= debug_leval_limit)
{
return -1;
}
/* 调用链表中所有isCanUse为1的结构体的DebugPrint函数
* 用来输出调试信息
*/
while (point)
{
if (point->is_can_use)
{
point->debug_print(temp);
}
point = point->next;
}
return 0;
}
int DebugChannelInit(void)
{
debug_t point = head;
while(point)
{
if(point->is_can_use && point->debug_init)
{
point->debug_init();
}
point = point->next;
}
return 0;
}
static int stdout_debug_print(char *data)
{
printf("%s", data);
return strlen(data);
}
static debug_opt_t debug_stdout =
{
.name = "stdout",
.is_can_use = 1,
.debug_print = stdout_debug_print,
};
int StdoutInit(void)
{
return DebugRegister(&debug_stdout);
}
int DebugInit(void)
{
int error;
error = StdoutInit();
// error |= NetPrintInit();
return error;
}
int main(void)
{
int error = DebugInit();
printf("error: %d\n", error);
DebugPrint("---------------\n");
return 0;
}
2 C, g) g6 F7 s: L) J# V% L

fanichicl · 发表于 2019-8-1 19:02

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