Re: [boost] boost::function overhead?

From: Neal Becker (ndbecker2_at_[hidden])
Date: 2006-05-02 13:01:12

David Abrahams wrote:

> "Arkadiy Vertleyb" <vertleyb_at_[hidden]> writes:
> 
>> "Neal Becker" <ndbecker2_at_[hidden]> wrote
>>
>>> I'd like to use boost::function to wrap (pointer to) function to pass to
>>> template functions that expect function objects.  I'm just wondering,
>>> though, if using boost::function wrapper will introduce additional
>> overhead
>>> into the function call?
>>
>> boost::function will introduce an extra virtual function call (which is
>> not a big deal in most cases).
> 
> Actually it's not a virtual call, it's a call through a function
> pointer.  That's one less indirection.
> 

Do you think a smart compiler might optimize this to a direct call?