From: Jonathan Biggar (yg-boost-users_at_[hidden])
Date: 2003-07-31 22:52:34
Jason Winnebeck wrote:
> The drawback is that you can't do
>
>something like this with the RAII methods.
>
>mtx.lock();
>mtx2.lock();
>mtx.release();
>mtx2.release();
>
>But I've never seen a case so far where I'm required to do that.
>
One use case for that that I'm aware of is when you want to have
multiple concurrent searches/modifies in a tree datastructure. You can
lock a parent node, scan the children nodes to find the one you want,
lock the child and then release the parent so that another search can
get to a sibling object before you are finished with the child node.
-- Jonathan Biggar jon_at_[hidden] jon_at_[hidden]