Create message queue and run it:
Message_queue mq;
mq.run();
Than, from another thread, add some code you'd like to be executed in the running thread.
mq.add([]{do_some_stuff_in_another_thread();});
If you would like to do something on an object from another thread, but are not sure if it's going to be still alive, just pass a weak pointer to it. If object is dead, message isn't going to be executed.
weak_ptr<Class> wp_obj;
Class *obj; // <- this actually lives in another thread and its life is controlled **there** by a shared_ptr
mq.add([]{obj->do_some_stuff_in_another_thread();}, {wp_obj, another_wp});
Imagine you'd like to execute a group of messages, probably in a thread pool, and wait for them
Group g;
mq.add(g.add([]{do_some_stuff_in_thread_pool_1();}));
mq.add(g.add([]{do_some_stuff_in_thread_pool_2();}));
mq.add(g.add([]{do_some_stuff_in_thread_pool_3();}));
//...
g.wait(); // <- blocks till all the messages in the group either done or failed
For more advanced usage see tests.
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