[Boost-bugs] [Boost C++ Libraries] #11951: Memory leak in boost::when_all

Subject: [Boost-bugs] [Boost C++ Libraries] #11951: Memory leak in boost::when_all
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-02-03 10:53:08

#11951: Memory leak in boost::when_all
--------------------------------------+------------------------
 Reporter:  snizovtsev@…              |      Owner:  anthonyw
     Type:  Bugs                      |     Status:  new
Milestone:  To Be Determined          |  Component:  thread
  Version:  Boost 1.60.0              |   Severity:  Regression
 Keywords:  future continuation leak  |
--------------------------------------+------------------------
 After trying to identify the source of huge memory leak in our product we
 found that problem sits inside boost::when_all.

 I have written a minimal program to demonstrate it. It simply constructs
 many promises, extracts the future from them and assign continuation to
 boost::when_all future. Then it waits for completition and loop.

 Run `htop` and see how memory infinitly consumes in time at ~300-400
 kb/sec. I have run this test on OS X (El Capitan) and Ubuntu 15.10. On
 Linux also virtual memory (address space) consumed at ~1 GB/sec rate!

 ifdef-ed part of code are used to run on valgrind and test that future's
 target objects are NOT leaked.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11951>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.