Re: Singleton_pattern and Thread Safety

James Kanze <>
Mon, 13 Dec 2010 10:35:38 -0800 (PST)
On Dec 13, 6:03 pm, Ebenezer <> wrote:

On Dec 13, 5:45 am, James Kanze <> wrote:

On Dec 12, 2:55 pm, Leigh Johnston <> wrote:

In the real world people write non-portable code all the time
as doing so is not "incorrect".

Certainly not: until we get C++0x, all multithreaded code is
"non-portable". It's a bit disingenious, however, to not
mention the limitations before others pointed out what didn't

I'm not entirely sure of your point, but think you are advocating
for portability here.

I'm not advocating anything, really. All I'm saying is that,
realistically, multithreaded code today will not be 100%

With library code I think portability is
important and work to increase the portability of my code.

Whether library code or application code, it's best to avoid
non-portable constructs when they aren't necessary, and to
isolate them in a few well defined areas when they are. For
some definition of "portable": I've worked on a lot of projects
where we supposed that floating point was IEEE, and we didn't
isolate the use of double to a few well defined areas:-).

In the end, there is no one right answer. The important thing
is to make an educated choice, and document it.

James Kanze

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