FILE__,__LINE__,FUNCTION__实现代码跟踪调试(下c语言编程 )
先看下简单的初始代码:注意其编译运行后的结果。
root@xuanfei-desktop:~/cpropram/2# cat global.h //头文件
#ifndef CLOBAL_H
#define GLOBAL_H
#include
int funca(void);
int funcb(void);
#endif
root@xuanfei-desktop:~/cpropram/2# cat funca.c //函数a
#include "global.h"
int funca(void)
{
printf ("this is function\n");
return 0;
}
root@xuanfei-desktop:~/cpropram/2# cat funcb.c //函数b
#include "global.h"
int funcb(void)
{
printf ("this is function\n");
return 0;
}
root@xuanfei-desktop:~/cpropram/2# gcc -Wall funca.c funcb.c main.c //联合编译
root@xuanfei-desktop:~/cpropram/2# ./a.out //运行
this is main
this is
this is main
this is function
this is main
相同结果很难让人看出那里出错,下面我们用用 __FILE__,__LINE__,__FUNCTION__加入代码,看看有什么区别吗.
把 __FILE__,__LINE__,__FUNCTION__加入到mail.c中
root@xuanfei-desktop:~/cpropram/2# cat main.c
#include "global.h"
int main(int argc, char **argv)
{
printf("%s(%d)-%s: this is main\n",__FILE__,__LINE__,__FUNCTION__);
funca();
printf("%s(%d)-%s: this is main\n",__FILE__,__LINE__,__FUNCTION__);
funcb();
printf("%s(%d)-%s: this is main\n",__FILE__,__LINE__,__FUNCTION__);
return 0;
}
root@xuanfei-desktop:~/cpropram/2# gcc -Wall funca.c funcb.c main.c
root@xuanfei-desktop:~/cpropram/2# ./a.out
main.c(4)-main: this is main
this is function
main.c(6)-main: this is main
this is function
main.c(8)-main: this is main
上面的结果main.c(4)-main:this is main 表示在mian.c源代码的第四行main函数里边打印出来的 this is main
那样的话就很方便的让程序员对自己的程序进行排错!
为了更方便的使用它我们可以通过在global.h代码中进行宏定义
root@xuanfei-desktop:~/cpropram/2# cat global.h
#ifndef CLOBAL_H
#define GLOBAL_H
#include
int funca(void);
int funcb(void);
#define DEBUGFMT "%s(%d)-%s"
#define DEBUGARGS __FILE__,__LINE__,__FUNCTION__
#endif
root@xuanfei-desktop:~/cpropram/2# cat funca.c
#include "global.h"
int funca(void)
{
printf (DEBUGFMT " this is function\n",DEBUGARGS);
return 0;
}
root@xuanfei-desktop:~/cpropram/2# cat funcb.c
#include "global.h"
int funcb(void)
{
printf (DEBUGFMT " this is function\n",DEBUGARGS);
return 0;
}
root@xuanfei-desktop:~/cpropram/2# cat main.c
#include "global.h"
int main(int argc, char **argv)
{
printf(DEBUGFMT "this is main\n", DEBUGARGS);
funca();
printf(DEBUGFMT "this is main\n", DEBUGARGS);
funcb();
printf(DEBUGFMT "this is main\n", DEBUGARGS);
return 0;
}
root@xuanfei-desktop:~/cpropram/2# gcc -Wall funca.c funcb.c main.c
root@xuanfei-desktop:~/cpropram/2# ./a.out
main.c(4)-mainthis is main
funca.c(4)-funca this is function
main.c(6)-mainthis is main
funcb.c(4)-funcb this is function
main.c(8)-mainthis is main
root@xuanfei-desktop:~/cpropram/2#
这就是通过定义__FILE__,__LINE__,FUNCTION__的宏来简单实现代码的跟踪调试:)
下面是一个可供调试用的头文件
#ifndef _GOLD_DEBUG_H
#define _GOLD_DEBUG_H
#ifdef __cplusplus
#if __cplusplus
extern "C"{
#endif
#endif /* __cplusplus */
//#define GI_DEBUG
#ifdef GI_DEBUG
#define GI_DEBUG_POINT() printf("\n\n[File:%s Line:%d] Fun:%s\n\n", __FILE__, __LINE__, __FUNCTION__)
#define dbg_printf(arg...) printf(arg);
#define GI_ASSERT(expr) \
do{ \
if (!(expr)) { \
printf("\nASSERT failed at:\n >File name: %s\n >Function : %s\n >Line No. : %d\n >Condition: %s\n", \
__FILE__,__FUNCTION__, __LINE__, #expr);\
} \
}while(0);
/*调试宏, 用于暂停*/
#define GI_DEBUG_PAUSE() \
do \
{ \
GI_DEBUG_POINT(); \
printf("pause for debug, press 'q' to exit!\n"); \
char c; \
while( ( c = getchar() ) ) \
{ \
if('q' == c) \
{ \
getchar(); \
break; \
} \
} \
}while(0);
#define GI_DEBUG_PAUSE_ARG(arg...) \
do \
{ \
printf(arg); \
GI_DEBUG_PAUSE() \
}while(0);
#define GI_DEBUG_ASSERT(expression) \
if(!(expression)) \
{ \
printf("[ASSERT],%s,%s:%d\n", __FILE__, __FUNCTION__, __LINE__);\
exit(-1); \
}
#else
#define GI_ASSERT(expr)
#define GI_DEBUG_PAUSE()
#define GI_DEBUG_PAUSE_ARG(arg...)
#define GI_DEBUG_POINT()
#define dbg_printf(arg...)
#define GI_DEBUG_ASSERT(expression)
#endif
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif /* __cplusplus */
#endif
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