Poco mutexes and scoped locks

pocomutex.cpp

#include <Poco/Mutex.h>

using namespace Poco;

class MyClass {
 public:
    bool getData() const {
        Mutex::ScopedLock _l(_mutex);
        return _data;
    }
    
    void setData(bool data) {
        Mutex::ScopedLock _l(_mutex);
        _data = data;
    }

 private:
    Mutex mutable _mutex;
    bool volatile _data;
};