Bug 11008 - Task.WhenAny should remove continuations on uncompleted tasks
Summary: Task.WhenAny should remove continuations on uncompleted tasks
Alias: None
Product: Class Libraries
Classification: Mono
Component: mscorlib ()
Version: master
Hardware: All All
: --- normal
Target Milestone: Untriaged
Assignee: Marek Safar
Depends on:
Reported: 2013-03-08 15:22 UTC by Daniel
Modified: 2013-03-18 04:33 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Daniel 2013-03-08 15:22:23 UTC
Please have a look at my StackOverflow question: http://stackoverflow.com/questions/15275932/will-task-whenany-unregister-continuations-on-unfinished-tasks

Answers suggest that in Microsofts .net implementation, task continuations are indeed unregistered on uncompleted tasks. However, after browsing Mono's source code (specifically the WhenAnyContinuation class in mono/mcs/class/corlib/System.Threading.Tasks/TaskContinuation.cs) it seems that this property does not hold in Mono. The code example in the StackOverflow question shows a scenario where an unbounded number of continuations may be registered on a task, causing a memory leak, so Task.WhenAny should remove continuations on uncompleted tasks when one of the supplied tasks finish.
Comment 1 Marek Safar 2013-03-18 04:33:56 UTC
Fixed in master