Boost Message Queue not based on POSIX message queue? Impossible to select(2)?

I ran into a similar situation the other day when using Boost. Interprocess' sync classes: namely the condition class. It's implemented in a "generic" manner, but the way it has been done is to use a custom spinlock which is highly inefficient (on OS X at least).

For all intents and purposes it made the sync classes useless.

Yeah, unfortunately it doesn't. I also was disappointed when realize that after digging sources.

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