33 Concurrency support library [thread]

33.4 Threads [thread.threads]

33.4.4 Class jthread [thread.jthread.class]

33.4.4.3 Members [thread.jthread.mem]

void swap(jthread& x) noexcept;
Effects: Exchanges the values of *this and x.
[[nodiscard]] bool joinable() const noexcept;
Returns: get_id() != id().
void join();
Effects: Blocks until the thread represented by *this has completed.
Synchronization: The completion of the thread represented by *this synchronizes with ([intro.multithread]) the corresponding successful join() return.
[Note 1: 
Operations on *this are not synchronized.
— end note]
Postconditions: The thread represented by *this has completed.
get_id() == id().
Throws: system_error when an exception is required ([thread.req.exception]).
Error conditions:
  • resource_deadlock_would_occur — if deadlock is detected or get_id() == this_thread​::​​get_id().
  • no_such_process — if the thread is not valid.
  • invalid_argument — if the thread is not joinable.
void detach();
Effects: The thread represented by *this continues execution without the calling thread blocking.
When detach() returns, *this no longer represents the possibly continuing thread of execution.
When the thread previously represented by *this ends execution, the implementation releases any owned resources.
Postconditions: get_id() == id().
Throws: system_error when an exception is required ([thread.req.exception]).
Error conditions:
  • no_such_process — if the thread is not valid.
  • invalid_argument — if the thread is not joinable.
id get_id() const noexcept;
Returns: A default constructed id object if *this does not represent a thread, otherwise this_thread​::​get_id() for the thread of execution represented by *this.