检测异常并打印堆栈

来源：互联网发布：gephi需要编程吗? 编辑：程序博客网时间：2024/06/05 09:00

#include <iostream>#include <signal.h>#include <unistd.h>#include <stdlib.h>#include <execinfo.h>#include <stdio.h>using namespace std;static void print_stack(void){void *array[10]; char **strings; int arrsize = backtrace (array, 10); int i;strings = backtrace_symbols (array, arrsize); for (i = 1; i < arrsize; i++) {printf (" --> %s/n", strings[i]); }printf ("/n"); free (strings); }static void sig_handle(int sig){cout<<"Capture seg fault..."<<endl;print_stack();exit(0);}class A{public:void get_type(){cout<<"called:"<<m<<endl;}private:int m;};int entry_func(){try{signal(SIGSEGV,sig_handle);A* ptoA = NULL;ptoA->get_type();}catch(int){cout<<"excption... int ..."<<endl;}catch(...){cout<<"execption..."<<endl;}return 0;}int main(){entry_func();return 0;}

运行可执行程序时偶尔会遇到段错误,实际上是捕捉到了SIGSEGV信号,然后会打印出熟悉的Segmentation fault...但是又没有其他的信息,很不好调试...因此写个小工具来捕捉段错误的信号,然后注册一个sighandler,来处理,并打印出相应的堆栈...就能马上知道出错的函数的名字了...

哈哈```很方便吧...``