Re: [boost] Solving Robert's singleton problem

Subject: Re: [boost] Solving Robert's singleton problem
From: Bjorn Reese (breese_at_[hidden])
Date: 2018-10-20 18:33:07

On 10/18/18 10:19 PM, Niall Douglas via Boost wrote:

> The way I have solved this problem is brutal, but it works. In my
> singleton constructor, I create a named shared memory area unique to my
> process. In that named shared memory area, I store a pointer to myself,
> and nothing else.

Since you are using shared memory, another (untested) solution could be
to let the singleton data be instantiated in shared memory together
with a reference count. A singleton is simply a proxy for this data,
and the reference count is use to track which singleton should create
or destroy the data.