Date: 2001-11-13 14:53:53
> How about a singleton class for boost? This is one of the most simple
> design patters, and can rather easily be implemented using templates. Just
> as the smart pointer, there may be a need for different variants, to
> handle the lifetime of the singleton in different ways.
Hmmm, I have a singleton class in pool. Someone on this list recently gave
me a new idea on how to do it better; I'm planning to do this soon.
My current singleton:
. Allows access during dynamic initialization (i.e., before main()).
. Provides thread-safe construction at the time of its first access.
. Guarantees destruction order: singletons act as objects with static
With the following restriction:
. Only one thread may be running before main() begins or after main()
The new idea I referred to above will remove that restriction, at which
point I intend to offer the pool singleton class as a generic singleton
Question on your code: what exactly are you doing in the constructor?
//I don't see how the following line has any effect
p-=(int)(singleton*)(T*)(1) - 1;
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