C++的一个好库。。。现在很流行

				//  (C) Copyright John Maddock 2001 - 2003. 
				//  (C) Copyright Jens Maurer 2003. 
				//  Use, modification and distribution are subject to the 
				//  Boost Software License, Version 1.0. (See accompanying file 
				//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
				
				//  See http://www.boost.org for most recent version.
				
				//  sun specific config options:
				
				#define BOOST_PLATFORM "Sun Solaris"
				
				#define BOOST_HAS_GETTIMEOFDAY
				
				// boilerplate code:
				#define BOOST_HAS_UNISTD_H
				#include