[jira] [Updated] (TS-4630) Semantics of IPHashTable iterators can be non-obvious

["Leif Hedstrom (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-4630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leif Hedstrom updated TS-4630:
------------------------------
    Fix Version/s: 7.0.0

> Semantics of IPHashTable iterators can be  non-obvious
> ------------------------------------------------------
>
>                 Key: TS-4630
>                 URL: https://issues.apache.org/jira/browse/TS-4630
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Core
>            Reporter: Alan M. Carroll
>            Assignee: Alan M. Carroll
>             Fix For: 7.0.0
>
>
> The root of the problem in TS-4629 is that elements in the container can self-destruct which de facto removes them from the container and thereby invalidate an iterator unexpectedly. This stems from the combination of intrusive links (so that some container state is in the object) and self-destructing objects (which destroys that state unexpectedly).
> In TS-4629, simply mapping a method call to the objects in the container is unsafe even though no explicit container methods are called. Safe use requires knowing that a particular method can cause self-destruction.
> Some additional thought needs to be put in to this to attempt to prevent situations like TS-4629 from occurring repeatedly in hard to track down situations.



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