Thread Synchronization with Semaphores

Learn how to synchronize threads with semaphores with an example.

Semaphores are typically used in sender-receiver workflows. For example, initializing the semaphore sem with 00 will block the receivers’ sem.acquire() call until the sender calls sem.release(). Consequently, the receiver waits for the notification of the sender. The program we go through when discussing one time synchronization of threads can easily be reimplemented using semaphores.

Run the following program 4 times.

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