Re: [Boost-bugs] [Boost C++ Libraries] #11457: boost::recursive_mutex leaks event handles when lock contention occurs.

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #11457: boost::recursive_mutex leaks event handles when lock contention occurs.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-11-10 17:15:35

#11457: boost::recursive_mutex leaks event handles when lock contention occurs.
-------------------------------+-----------------------------------------
  Reporter:  al.mendall@…      |      Owner:  viboes
      Type:  Bugs              |     Status:  assigned
 Milestone:  To Be Determined  |  Component:  thread
   Version:  Boost 1.46.0      |   Severity:  Problem
Resolution:                    |   Keywords:  handle leak recursive_mutex
-------------------------------+-----------------------------------------

Comment (by anonymous):

 Yes, the handle leak occurs in Windows.  I have not experienced it in
 Linux.  Here is a simple example class.

 class UserInfo
 {
     boost::recursive_mutex m_Lock;
     bool IsEntitled (const unsigned int uBit);
 }

 bool CUserInfo::IsEntitled (const unsigned int uBit)
 {
     bool    bRet = false;
     boost::recursive_mutex::scoped_lock lock (m_Lock);
     //do something...anything that takes a few nanoseconds.
     return bRet;
 }

 You can see the leak by creating a simple windows app that launches
 multiple threads and puts them each in a loop calling IsEntitled.  It will
 leak event handles for each (or maybe just some?) lock contention events.
 So the more threads you launch, the more handle leaks you will see.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11457#comment:6>
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