[SCREEN/UTILS] Singleton pattern crash on linux

[GoogleCodeExporter]

Crash if another singleton than the Logger and the Profiler are initialized 
first

It's due to the static variable fiasco :

http://cpp.developpez.com/faq/cpp/?page=static#CONSTRUCTEUR_static_fiasco

Original issue reported on code.google.com by thoratou@gmail.com on 7 Jun 2010 at 11:46

[GoogleCodeExporter]

Development started.

Implementation based on lazy instantiation of singleton and ordered destruction

The implementation is based on the assumption that if a singleton 1 uses a 
singleton 
2 in his constructor, or if the 2 is used before the 1, the 2 doesn't use the 1 
in 
his destructor.

In practice, the Logger and the Profiler (that must be used before everyone) 
are the 
only singletons used by other singletons. So, for now, the assumption is 
verified.

In order to avoid this assumption in the future, the singleton pattern must 
implement "singleton destruction order levels" ("last" for Logger and Profiler, 
...)

Original comment by thoratou@gmail.com on 7 Jun 2010 at 11:58

• Changed state: Started

[GoogleCodeExporter]

Bug fixed in Screen/Utils

Original comment by tt.tranq...@gmail.com on 12 Jun 2010 at 6:33

• Changed state: Fixed

[GoogleCodeExporter]

fix validated

Original comment by thoratou@gmail.com on 23 Jun 2010 at 9:11

• Changed state: Verified