c – _Unwind_SjLj_Unregister和_Unwind_SjLj_Register是什么？

什么是_Unwind_SjLj_Unregister和_Unwind_SjLj_Register？我在gprof报告中将它们作为我的顶级处理器时间用户.谷歌只返回抱怨这两个错误的人的链接.

这是我报告中唯一有时间的部分！= 0：

Flat profile:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     @R_501_10586@l           
 time   seconds   seconds    calls  ms/call  ms/call  name    
 33.33      0.03     0.03                             _Unwind_SjLj_Unregister
 22.22      0.05     0.02                             _Unwind_SjLj_Register
 11.11      0.06     0.01    13886     0.00     0.00  toint(std::string,int)
 11.11      0.07     0.01     4380     0.00     0.00  hexlify(std::string)
 11.11      0.08     0.01     2994     0.00     0.00  std::_Deque_iterator<unsigned char,unsigned char const&,unsigned char const*>::operator+(int) const
 11.11      0.09     0.01                             std::string::assign(char const*,unsigned int)

我正在运行Windows 7 x64,并使用代码块10.05 gcc进行编译

编辑：

启用强制程序运行64秒的函数后,它现在看起来像：

Flat profile:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     @R_501_10586@l           
 time   seconds   seconds    calls   s/call   s/call  name    
  8.45      3.49     3.49                             _Unwind_SjLj_Register
  7.36      6.53     3.04  4000006     0.00     0.00  CAST128::setkey(std::string)
  5.86      8.95     2.42                             _Unwind_SjLj_Unregister
  4.36     10.75     1.80 64000080     0.00     0.00  CAST128::F(int&,unsigned int&,unsigned char&)
  3.68     12.27     1.52                             __dynamic_cast
  3.37     13.66     1.39                             std::string::_Rep::_S_create(unsigned int,unsigned int,std::allocator<char> const&)
  3.25     15.00     1.34                             std::basic_String<char,std::char_Traits<char>,std::allocator<char> >::~basic_String()
  2.88     16.19     1.19                             std::istreambuf_iterator<char,std::char_Traits<char> > std::num_get<char,std::istreambuf_iterator<char,std::char_Traits<char> > >::_M_extract_int<unsigned long long>(std::istreambuf_iterator<char,std::char_Traits<char> >,std::ios_base&,std::_Ios_Iostate&,unsigned long long&) const