What is semaphore? C++
What is semaphore? C++
✍: Guest
Semaphore is a special variable, it has two methods: up and down. Semaphore performs atomic operations, which means ones a semaphore is called it can not be inturrupted.
The internal counter (= #ups - #downs) can never be negative. If you execute the “down” method when the internal counter is zero, it will block until some other thread calls the “up” method. Semaphores are use for thread synchronization.
2012-04-09, 3682👍, 0💬
Related Topics:
What is the difference between Stack and Queue?
What is the difference between Stack and Queue? Stack is a Last In First Out (LIFO) data structure. Queue is a First In First Out (FIFO) data structure 2012-04-11, 3404👍, 0💬
Give 4 examples which belongs application layer in TCP/IP architecture?
Give 4 examples which belongs application layer in TCP/IP architecture? FTP, TELNET, HTTP and TFTP 2012-04-05, 3384👍, 0💬