[Boost-bugs] [Boost C++ Libraries] #7125: weak_ptr::lock() thread safety

Subject: [Boost-bugs] [Boost C++ Libraries] #7125: weak_ptr::lock() thread safety
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-07-12 11:13:41

#7125: weak_ptr::lock() thread safety
----------------------------------------------+-----------------------------
 Reporter:  Gennady  Proskurin <gpr@…>        |       Owner:  pdimov   
     Type:  Feature Requests                  |      Status:  new      
Milestone:  To Be Determined                  |   Component:  smart_ptr
  Version:  Boost 1.50.0                      |    Severity:  Problem  
 Keywords:                                    |  
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 Imagine the following code:

 {{{
 shared_ptr<T> sp(new ...);
 weak_ptr<T> wp(sp);

 sp.reset(); // thread A
 shared_ptr<T> sp1 = wp.lock(); // thread B
 }}}

 It is not clear from documentation, whether it is safe to call
 shared_ptr::reset() and weak_ptr::lock() concurrently in different
 threads. It is very frequently asked question and should be documented
 explicitly.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7125>
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