What does boost::thread do if it fails to create the thread?

Question

What does boost::thread do if it fails to create the thread?

The winAPI returns a NULL (I guess posix does something similar) but as thread is an object how do I test to see if the thread was created?

Answer 1

According to the API, it throws a boost::thread_resource_error if the thread creation fails.

I guess you cannot create an invalid boost::thread object: if something goes wrong, the constructor throws thus preventing the object creation.

Answer 2

Throws: boost::thread_resource_error if an error occurs