Boost logo

Boost :

From: Peter Dimov (pdimov_at_[hidden])
Date: 2002-10-18 10:18:33

Of historical interest: from my review of the Threads library, 31.08.2001:

"The mutex is missing one bit of functionality that I consider critical.
two threads need to lock two (or more) mutexes, the lock order must be the
same to avoid deadlocks. No support is provided for this operation. Possible
alternatives are

template<class M1, class M2, ...> class scoped_multiple_lock
    scoped_multiple_lock(M1 &, M2 &, ...);


template<class M1, class M2, ...> class mutex_tuple
    typedef ... scoped_lock;
    mutex_tuple(M1 &, M2 &, ...);

"I'd like to see

template<class M, class P, class F> void wait(M & m, P p, F f)
    typename M::scoped_lock lock(m);
    while(!p()) this->wait(lock);

added, for people that want to go the extra mile (when someone bothers to
define a predicate to use the wait(l, p) form, (s)he would probably define
an action object, too.)"

Boost list run by bdawes at, gregod at, cpdaniel at, john at