What is Thread Pool?
A group of worker threads that are established at the program start and stored in a pool to be used at a later time are called thread pools. The Thread Pool effectively maintains and allocates existing threads to do several tasks concurrently, saving time compared to starting a new thread for each activity.
Thread Pool in C++
The Thread Pool in C++ is used to manage and efficiently resort to a group (or pool) of threads. Instead of creating threads again and again for each task and then later destroying them, what a thread pool does is it maintains a set of pre-created threads now these threads can be reused again to do many tasks concurrently. By using this approach we can minimize the overhead that costs us due to the creation and destruction of threads. This makes our application more efficient.
There is no in-built library in C++ that provides the thread pool, so we need to create the thread pool manually according to our needs.
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