threads-classes.puml

@startuml

namespace pthread {

    enum thread_status{
      not_a_thread
      a_thread
    }

    interface runnable {
      +void run ()
    }

    abstract abstract_thread {
      +void start()
      +void join()
      +bool joinable() const
      +{abstract} void run()
    }

    abstract_thread ..|> runnable : implements
    note top of abstract_thread : this is the base class \nof all your threads.

    class thread{
      +thread(runnable)
      +void start()
      +void join()
      +bool joinable() const
      +thread_status status()
      ...
      -- operators --
      +thread& operator=(thread&& other)
    }

    thread ... thread_status : uses
    thread .. runnable : uses

    class thread_group {
      +void add(abstract_thread *thread);
      +void start();
      +void join();
      +const bool destructor_joins_first()
    }

    thread_group "1"--o "*" abstract_thread : _threads

    class consumer <<sample>>{
      +void run()
    }

    consumer --|> abstract_thread : extends

    class producer <<sample>> {
      +void run()
    }

    producer --|> abstract_thread : extends

    note as SAMPLES
    These are sample classes.
    end note

    SAMPLES .. consumer
    SAMPLES .. producer
}

@enduml