Re: wrapping synchronization in objects?
On Apr 1, 5:47 pm, "Gernot Frisch" <m...@privacy.net> wrote:
is it possible (win32, *nix, only) to create a template class
that locks/unlocks a mutex every time the value of an object
is used?
Like:
template <typename T> class wrapper
{
public:
wrapper() :m_t() {}
wrapper(const T& t) :m_t(t) {}
operator T() const
{
T t;
lock();
t=m_t;
unlock();
return t;
}
T operator = (const T& t)
{
lock();
m_t = t;
unlock();
return t;
}
private:
T m_t;
void lock()const {/*EnterCricitcalSection...whatever*/}
void unlock()const{/*LeaveCriticalSection...*/}
};
int main()
{
wrapper<int> i = 13;
return i;
}
Doubtlessly, but I doubt that it would be very useful.
Individual accesses rarely have the right granularity for
locking. (There are exceptions, of course, but they're rare
enough to probably not justify a generic solution.) Of course,
you'd want a scoped lock in the two functions, in case the
assignment threw an exception.
--
James Kanze (GABI Software) email:james.kanze@gmail.com
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