Synchronization

Synchronization allows you to control program flow and access to shared data for concurrently executing threads.

The three synchronization models are mutex locks, condition variables, and semaphores.

• Mutex locks allow only one thread at a time to execute a specific section of code, or to access specific data.

• Condition variables block threads until a particular condition is true.

• Counting semaphores typically coordinate access to resources. The count is the limit on how many threads can have access to a semaphore. When the count is reached, the semaphore blocks.