A thread pool is a method to reuse existing threads, rather than always creating new ones. They allow for pooling resources in given limits and automatically assigning tasks to open workers. Use this tag when you have questions about implementing a thread pool, or using an existing thread pool implementation.
In multi-threaded applications, handling the various threads is a complicated task. Thread pool functionality is targeted to make it easier to use a large number of threads efficiently.
Because thread creation is relatively expensive, reusing threads in a pool can increase a programs performance. It can also help make better use of the available hardware threads by limiting the total number of threads that are created.
The main goal when using a thread pool is to be able to dynamically schedule work to a given set of workers. However, the original thread does not need to keep track of the thread creation itself, but forwards the thread management to the thread pool implementation. The thread pool will create new workers if necessary and destroy unused ones.
