One of the new technologies is virtual threads. This article explains what virtual threads are and how they work, the important problem they solve, and an example of using virtual threads under Java .

Synchronization is the act of serializing (or ordering one at a time) thread access to those code sequences that let multiple ... Instead, they allocate in shared heap memory—as part of classes ...

Memory allocation may fail. Although these are all valid points, they may not all be as significant as they seem. Reentrancy is only an issue if a function is called from multiple threads. It would be ...