[boost] Re: Boost.Threads: Do we need all those mutexes?

From: Michael Glassford (glassfordm_at_[hidden])
Date: 2004-07-07 23:25:17

Howard Hinnant wrote:

[big snip]

> The downside to all this is that the sizeof(rw_mutex) about doubled to 
> support upgradable_read_lock (whether or not you use that 
> functionality).  

Really? (Not having tried to implement it,) that surprises me. Can you 
give a few more details about why? I'm interested.

> The code size of the read and write locking/unlocking
> also swelled somewhat.  I'm still contemplating the cost/functionality 
> tradeoff, but my current feeling is that it is probably worth it.

Mike