declaring a thread within a class

Hi All
trying to learn how to use c++ std::thread. I can get a basic one working. However for my code I'd like to declare the thread as part of a class. I've tried a few ways but get errors of various sorts. basically what I'd like to do is something like

class MyClass
{
a_function( std::string name, unsigned int x );

start_thread( std::string name, unsigned int x);

private:

std::thread mythread( function, std::string, unsigned int x ); <<<<ISUUE HERE I think..
 
}

then

MyClass::a_function( std::string name, unsigned int x )
{
stuff...
}

MyClass::start_thread( std::string name, unsigned int x )
{
  mythread( a_function, name, x ); /*start the thread*/
}

But I can't work out how to declare my thread in my class variables list, how to I show the function the thread starts?
Sorry if I've used wrong language to describe, but hope you can see what I mean from the pseudo code example

Hi
I think the issue is with declaring the function as part of the class, which I need to do. If I test with it as not part of the class

void dynamic_run_thread( unsigned int lucky  )
{
	std::cout<<"C++11 MULTITHREADING new "<<lucky<<std::endl;


}

and call from

bool ClassA::run_dynamic( void )
{


std::thread run_thread( dynamic_run_thread, 100 );
run_thread.join();

it works. But if I make it part of the class

void ClassA::dynamic_run_thread( unsigned int lucky  )
{
	std::cout<<"C++11 MULTITHREADING new "<<lucky<<std::endl;


}

and call from

bool ClassA::run_dynamic( void )
{


std::thread run_thread( dynamic_run_thread, 100 );
run_thread.join();

I get "invalid use of non-static member function"

I've tried

std::thread run_thread( ClassA::dynamic_run_thread, 100 );

with no luck, can anyone tell me how I can call a function that's part of a class?
Thanks

yes, definitely, the non-static member functions cannot be used that way. Just imagine, the existence of these functions depends on variables (instances of type ClassA).
From the other hand you can try to use static member function.
Also you may need to take into account, the non-static member functions have an additional, hidden parameter, the this pointer.

As far as I know, the thread-function itself cannot be a class function, probably because of the issue of dealing with this. But you can simply write a short, private function, arrange it to receive a pointer to the desired object, and have that function invoke a (necessarily, public) method of the class-instance.

From a design standpoint, I suggest that, if the class uses a thread, the class-instance should own the thread and should completely control it. It should contain all the "voodoo" needed to launch the thread and to eventually tear it down, and to synchronize everything as required. Clients ought not to even know, so to speak, that a thread is involved.

Thanks tired this std::thread run_thread( this->dyna... but no luck.
So if I'm understand what's being said to me I can't use a class function from a spawned thread?

yes, in that context this has no value

The thread main-process can be a simple "stub" that obtains the object-instance pointer by some suitable means, then calls a designated (public) method within that instance. Be sure to pass the pointer to the thread in a way that is not vulnerable to race conditions.