Is cout << msg an atomic action?

void foo (int n)
{
  std::ostringstream oss;
  oss << "ABCD: " << n << std::endl;
  std::cout << oss.str() << std::flush;
}

That function has been invoked in multiprocessing mode.


Output was something like:
ABCA: B1
C
etc.

Is cout << msg an atomic action?




Alex Vinokur
     email: alex DOT vinokur AT gmail DOT com
     http://mathforum.org/library/view/10978.html
     http://sourceforge.net/users/alexvn