Re: Threadsafe singletons

"Matthias Hofmann" <>
2 Aug 2006 11:40:30 -0400
"kanze" <> schrieb im Newsbeitrag

Strangely, I found no text in the standard that explicitly
guarantees that an object will be initialized before it is
first used... Or maybe I just overlooked it?

No. This guarantee is explicitly not given; there are even
cases where the standard guarantees that the dynamic
initialization will NOT have taken place before the object is
used. (My solution to this problem, with:
    Singleton* Singleton::ourInstance = &Singleton::instance() ;
is an example of code which counts on the function seeing the
zero initialization, before the dynamic initialization has

You mean, you are checking for a null pointer whereever
Singleton::ourInstance is used?

Matthias Hofmann
Anvil-Soft, CEO - The Creators of Toilet Tycoon - Die Macher des Klomanagers

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