Background: I am/was planning to profile the thread libraries from boost and ACE. During this experiment, I wish we had an interface class defined for threads. Also, I wish boost and ACE had implemented those interface classes. It would have helped someone like me profile different C++ libraries with ease. I was going through the header files of boost and I don't see a interface classes being used. I am trying to understand was there a conscientious decision made to not define them. I am trying to understand the reason behind those decisions. It will help newbie's like me to understand C++ better and write better code. Thanks, Amit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This message is intended only for the personal and confidential use of the designated recipient(s) named above. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Lehman Brothers. Email transmission cannot be guaranteed to be secure or error-free. Therefore, we do not represent that this information is complete or accurate and it should not be relied upon as such. All information is subject to change without notice. -------- IRS Circular 230 Disclosure: Please be advised that any discussion of U.S. tax matters contained within this communication (including any attachments) is not intended or written to be used and cannot be used for the purpose of (i) avoiding U.S. tax related penalties or (ii) promoting, marketing or recommending to another party any transaction or matter addressed herein.