Re: [Boost-bugs] [Boost C++ Libraries] #7720: exception lock_error while intensive locking/unlocking of mutex

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7720: exception lock_error while intensive locking/unlocking of mutex
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-09-21 08:57:29

#7720: exception lock_error while intensive locking/unlocking of mutex
--------------------------------+------------------------
  Reporter:  sergey.stepanov@…  |      Owner:  viboes
      Type:  Bugs               |     Status:  reopened
 Milestone:  To Be Determined   |  Component:  thread
   Version:  Boost 1.59.0       |   Severity:  Regression
Resolution:                     |   Keywords:  lock_error
--------------------------------+------------------------

Comment (by Hung Mai <duchungjava@…>):

 Hi Viboes,

 Since I don't know how to provide the patch in the desired format, I've
 attached the file with the changes I made based on Boost-1.59

 Basically, there is just one small change in the unlock_upgrade function
 as following:

 {{{#!C++
 void unlock_upgrade()
 {
   // ...

   new_state.shared_waiting=0; // adds this line

   if(last_reader)
   {
     if(new_state.exclusive_waiting)
     {
       --new_state.exclusive_waiting;
       new_state.exclusive_waiting_blocked=false;
     }
     // new_state.shared_waiting=0; // comment out this line
   }

   // ...
 }
 }}}

 Thank you,

 Hung Mai

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7720#comment:32>
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