Yang Zhang writes:

Hi, does boost provide a synchronized queue (or anything that is a concurrent producer-consumer abstraction)? Thanks!

No. There is a simple version on my blog, though: http://www.justsoftwaresolutions.co.uk/threading/implementing-a-thread-safe-... There are many lock-free queues available if you google. Anthony -- Anthony Williams | Just Software Solutions Ltd Custom Software Development | http://www.justsoftwaresolutions.co.uk Registered in England, Company Number 5478976. Registered Office: 15 Carrallack Mews, St Just, Cornwall, TR19 7UL