* Mutex = 1개 thread 소유 * Semaphore = 여러개 thread 소유 * Kernel Object : Event, Mutex, Semaphore >> 사용자 상태 변경 : Waitable Timer, Change Notification, Console Input, Job : Process, Thread >> 생성: Non-Signal, 종료: Signal * WaitForSignalObject 와 같은 Wait계열함수 * Kernel(KERNEL32.DLL) : Process, Thread, Event Mutex, Semaphore, Memory mapping file, Waitable Timer, Token, I/O Completion port, Mailslot, Pipe - HA..