17.2. QThread and QtConcurrent

Before Qt, cross-platform threads were not generally available for C++ open source developers because threads were relatively new concepts and were handled differently in each operating system. Threads are now found in most operating systems and many modern programming languages. Multicore processors have also become quite common, so threads from the same process can be scheduled to run on different cores by modern operating systems.

Qt’s thread model permits the prioritizing and control of threads. QThread provides a low-level class that can be used for explicit creation of long-running threads.