lolly Namespace Reference

Namespaces
namespace	data
namespace	hash
namespace	io
namespace	system

Functions
void	init_tbox ()
string	win_get_username ()
string	get_stacktrace (unsigned int max_frames)

Function Documentation

init_tbox()

void lolly::init_tbox ( )

extern

Definition at line 169 of file sys_utils.cpp.

             {
  if (!tb_init (tb_null, tb_null)) exit (-1);
  mem_init ();
}

win_get_username()

string lolly::win_get_username

(

)

Definition at line 141 of file win_sys_utils.cpp.

                    {
  const int MAX_LEN= 100;
  wchar_t   buffer[MAX_LEN]; // it is in UTF-16
  ULONG     len;
  GetUserNameExW (NameDisplay, buffer, &len);
  if (len == 0) return string ("");
  else {
    return wchar_to_utf8 (buffer);
  }
}

get_stacktrace()

string lolly::get_stacktrace

(

unsigned int

max_frames

)

Definition at line 175 of file sys_utils.cpp.

                                         {
  string r;
  r << "Backtrace of C++ stack:\n";
 
  // storage array for stack trace address data. skip the first, it is the
  // address of this function.
  STACK_NEW_ARRAY (addrlist, tb_pointer_t, max_frames + 1);
 
  // retrieve current stack addresses
  int addrlen= tb_backtrace_frames (addrlist, max_frames, 2);
 
  if (addrlen == 0) {
    r << "  <empty, possibly corrupt>\n";
    STACK_DELETE_ARRAY (addrlist);
    return r;
  }
 
  // resolve addresses into strings by tbox, differs under various platforms.
  // this array must be released
  tb_handle_t symbollist= tb_backtrace_symbols_init (addrlist, addrlen);
 
  // allocate string which will be filled with the function name
  char* funcname= tm_new_array<char> (1024);
 
  // iterate over the returned symbol lines.
  for (int i= 0; i < addrlen; i++) {
    // print name of current stack frame
    const char* curname=
        tb_backtrace_symbols_name (symbollist, addrlist, addrlen, i);
    if (curname == NULL) {
      r << "  null\n";
    }
    else {
      r << "  " << string (curname) << "\n";
    }
  }
 
  tm_delete_array (funcname);
  tb_backtrace_symbols_exit (symbollist);
  STACK_DELETE_ARRAY (addrlist);
  return r;
}