On 05/18/2017 02:17 PM, Jack Stouffer wrote:
On Thursday, 18 May 2017 at 15:18:00 UTC, Jack Stouffer wrote:
...
Also, shared allocators raise another problem entirely. Let's say for
the sake of clarity that these future containers will use a separate
range type.
Let's say you have a container with five elements, and then you give a
range of those elements to a function that caches the length somewhere
because it's available (very common as ranges have never been expected
to change before). What happens when you're iterating over the range and
then another thread calls removeBack before the loop is completed? All
sorts of functions in Phobos will blow up in interesting and different
ways.
If two or more threads have access to a container, that would be shared.
Many traditional containers aren't usable gainfully as shared, so we
plan to implement a few specialized ones. Anyhow, for now you won't be
able to use containers that are shared. -- Andrei
