Re: [boost] [thread] thread-safe static local

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tuesday 03 March 2009, Oliver Kowalke wrote:

Hi, I need a function 'get_default_X()' returning a reference to a singleton in a multithreaded env. I choosed Scott Meyers singleton pattern (static local) together with boost::call_once(). My this be a reasonable, threadsafe implementation?

I don't think so. Your once_flag is a local variable in Y's constructor, so I don't see that the call_once accomplishes anything. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkmtYNcACgkQ5vihyNWuA4UJyACfciR5l1vbwg7wMPUISDIQUhoN AfYAoLbHeovjJsaKzRuY0lYSmF5l0E1F =E/Pf -----END PGP SIGNATURE-----