1. http://blog.chinaunix.net/uid-20121320-id-447864.html
2. http://www.hitripod.com/blog/2012/03/synchronization-mechanism-comparison-spinlock-mutex/
3. http://www.ashishsharma.me/2011/08/semaphores-and-mutexes.html
4. http://www.linuxidc.com/Linux/2011-03/33741.htm
转载于:https://www.cnblogs.com/demote/archive/2012/04/12/2509095.html
