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c++multithreadingc++11
pvkc
pvkc

Reputation: 89

C++11 Multithreading : State of thread after execution

What is the state of thread after it completes its execution.?

Is it destroyed immediately after its execution or is it destroyed with parent thread.?

Upvotes: 4

Views: 291

Answers (1)

Nemanja Boric
Nemanja Boric

Reputation: 22157

The std::thread object is different than a underlying thread of control (although they should map 1-on-1).

This separation is really important and it implies that std::thread and thread of control can have different life duration. For example, if you create your std::thread on the stack, you really need to call thread::detach before your object go destroyed (if you don't destructor will call terminate ). Also, as Grizzly pointed out, you can call .join() before your object destruction which will block until the execution of the thread has finished.

This also answers your question - std::thread object is not destroyed after the thread is finished - it is behaving as every other C++ object - it will be destroyed when it goes out of the scope (or gets deleted).

Upvotes: 4

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