출처 :http://www.linuxdevcenter.com/pub/a/linux/2007/05/24/semaphores-in-linux.html Semaphores in Linux 05/24/2007 Multithreaded applications are part and parcel of day-to-day commercial application. It would be difficult to imagine any full fledged application running commercially that is not multithreaded. Applications must use the multithreaded approach to improve on the performance of the appl..