Question

I get the following errors

Error 2 error C2248: ‘std::thread::thread’ : cannot access private
member declared in class
‘std::thread’ c:\dropbox\prog\c++\ttest\ttest\main.cpp 11 1 ttest

Error 1 error C2248: ‘std::mutex::mutex’ : cannot access private
member declared in class
‘std::mutex’ c:\dropbox\prog\c++\ttest\ttest\main.cpp 11 1 ttest

my code

#include <mutex>
#include <thread>

using namespace std;

struct Serverbas
{
    mutex mut;
    thread t;
};

struct LoginServer : Serverbas
{
    void start()
    {
       t = thread(&LoginServer::run, *this);
    }
    void run() {}
};

int main() {}

Answer 1

t = thread( &LoginServer::run, *this);

That first argument to the member function run (implicit in direct calls) should be the this pointer, i.e. just this. Don’t dereference it.

When you dereference it all hell breaks loose because your std::thread and std::mutex members prevent objects of your class type from being copyable — the copy constructors of these member objects are private/deleted and that is the error you are seeing.

So:

t = thread(&LoginServer::run, this);