Threads disadvantages:

Difficulty of writing code:

Multithreaded and multicontexted applications are not easy to write. Only experienced programmers should undertake coding for these types of applications.

Difficulty of debugging:

It is much harder to replicate an error in a multithreaded or multicontexted application than it is to do so in a single-threaded, single-contexted application. As a result, it is more difficult, in the former case, to identify and verify root causes when errors occur.

Difficulty of managing concurrency :

The task of managing concurrency among threads is difficult and has the potential to introduce new problems into an application.

Difficulty of testing:

Testing a multithreaded application is more difficult than testing a single-threaded application because defects are often timing-related and more difficult to reproduce.

Difficulty of porting existing code:

Existing code often requires significant re-architecting to take advantage of multithreading and multicontexting. Programmers need to: