In this patch, the HandleScopeImplementer creates a
DeferredHandleScope, which has a 'Detach()' method that returns a
DeferredHandles object. The Handles created after the creation of the
DeferredHandleScope have their lifetime tied to the lifetime of the
DeferredHandles object -- they die when the DeferredHandles object is
destroyed.
Client code looks like this (CompilationHandleScope, for instance):
{
// Remember the next and limit pointers in the currently active
// HandleScopeData using a regular HandleScope.
HandleScope scope;
DeferredHandleScope* dhs =
handle_scope_implementer->CreateDeferredHandleScope();
// Create a bunch of handles
DeferredHandles* dh = dhs->Detach();
delete dhs; // Not needed anymore.
// Old limit and next restored here.
}
// ...
// Once we no longer need the Handles we created ...
delete dh;
http://codereview.chromium.org/10640012/
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