English 中文(简体)
C型索赔处理器
原标题:C-style assertion handlers

对复杂的软件进行动态检查有几种方法:

  1. assert.h implementation assert( expression_that_must_be_true );
  2. Linux 内核样式 :

    if (in_interrupt())
            BUG();
    

如果选中条件值没有预期值, 则会调用某些错误处理器 。

例如:

#define BUG( ) 
{ 
 printf("BUG found (function %s file %s line %d)
", __FUNCTION__, 
                    __FILE__, __LINE__); 
 exit(1); 
}

即便在最简单的处理错误处理方法中, 某些错误也可以被隐藏( 因为“ 没有程序没有错误 ” ) 。 这个错误可以导致这个错误处理器的循环调用( 例如从打印处) 。 如果仍然有错误处理器, 错误处理器会被反复调用, 直到堆叠溢出。 最糟糕的情况是, 开发者甚至不会看到任何消息( 比如, 如果错误在打印处的起始处 ) 。

问题是:在仍然得到一些调试信息的同时,在昆虫处理器中避免重复呼叫的最佳方法是什么?

问题回答

初始化一个最大深度的全球变量, 以避免循环呼叫 。

调试器 c/

unsigned Debug_MaxDepth = 5;

调试 h.

#define BUG( ) 
{ 
  if (Debug_MaxDepth > 0) { 
    Debug_MaxDepth--; 
    printf("BUG found ...
"); 
  } 
exit(1); 
}




相关问题
Fastest method for running a binary search on a file in C?

For example, let s say I want to find a particular word or number in a file. The contents are in sorted order (obviously). Since I want to run a binary search on the file, it seems like a real waste ...

Print possible strings created from a Number

Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...

Tips for debugging a made-for-linux application on windows?

I m trying to find the source of a bug I have found in an open-source application. I have managed to get a build up and running on my Windows machine, but I m having trouble finding the spot in the ...

Trying to split by two delimiters and it doesn t work - C

I wrote below code to readin line by line from stdin ex. city=Boston;city=New York;city=Chicago and then split each line by ; delimiter and print each record. Then in yet another loop I try to ...

Good, free, easy-to-use C graphics libraries? [closed]

I was wondering if there were any good free graphics libraries for C that are easy to use? It s for plotting 2d and 3d graphs and then saving to a file. It s on a Linux system and there s no gnuplot ...

Encoding, decoding an integer to a char array

Please note that this is not homework and i did search before starting this new thread. I got Store an int in a char array? I was looking for an answer but didn t get any satisfactory answer in the ...

热门标签