he ReaderGuard is used to remove volatileness and simultaneously gain access
to the const-part of the shared object's interface. It performs shared
(reader) locking of the mutex exposed by the shared object.
The following is the public interface of the ReaderGuard.
template <class X,class Mutex>
class
ReaderGuard
{
public:
explicit
ReaderGuard( volatile const X& x );
explicit
ReaderGuard( volatile const X* x );
ReaderGuard(
volatile const X& x, volatile const Mutex& mutex );
ReaderGuard(
volatile const X* x, volatile const Mutex& mutex );
~ReaderGuard();
Mutex&
mutex() const;
const
X* operator->() const;
const
X& operator*() const;
const
X* ptr()
const;
};
All constructors throw boost::thread_resource_error. All other functions do
not throw.
See the section (
Preventing race
condition section
) for an example.
|
