Subject: [boost] Does lock-free boost::shared_ptr<T> implementation exist?
From: Anqing Xu (anqingxu_at_[hidden])
Date: 2010-07-12 11:55:05
I'm trying to find a production quality lock free reference counted pointer implementation and boost::shared_ptr seems promising. However
boost::atomic_is_lock_free(shared_ptr) returns false on Windows. I'm going to try on SUSE linux soon.
According to http://www.boost.org/doc/libs/1_43_0/libs/smart_ptr/shared_ptr.htm,
Starting with Boost release 1.33.0, shared_ptr uses a
implementation on the following platforms:
GNU GCC on x86 or x86-64;
GNU GCC on IA64;
Metrowerks CodeWarrior on PowerPC;
GNU GCC on PowerPC;
Then why does boost::atomic_is_lock_free(shared_ptr) returns false?
Is there any compiler flag that needs to be set?
I also found another lock free reference counted pointer, atomic_ptr from Joe Seigh here http://sourceforge.net/projects/atomic-ptr-plus/files/ but it seems to support linux with GCC only.
Documentation is also poor.