[jira] Updated: (TS-54) UnixNet cleanup, encapsulation of event subsystem

["John Plevyak (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-54?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Plevyak updated TS-54:
---------------------------

    Fix Version/s: 3.0
                       (was: 2.1.2)

This is a catchall for general Net cleanup.  All the pressing work is done,
so I am moving this forward so it can continue to catch ongoing cleanup efforts.

> UnixNet cleanup, encapsulation of event subsystem
> -------------------------------------------------
>
>                 Key: TS-54
>                 URL: https://issues.apache.org/jira/browse/TS-54
>             Project: Traffic Server
>          Issue Type: Improvement
>          Components: Cleanup
>         Environment: all unixesque
>            Reporter: John Plevyak
>            Assignee: John Plevyak
>             Fix For: 3.0
>
>         Attachments: proposed-jp-v1-List.h, ts-List-net-cleanup-jp-v2.patch, ts-List_and_net-cleanup-jp-v1.patch
>
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> The UnixNet subsystem was modified for epoll, but lots of the old data structures, data members and code
> remain for the old "bucket" approach.
> The epoll code should also be encapsulated to simplify support for other platforms and a possible move
> to an event library.
> The current code is complicated by limitations in Queue which require specifying the link field for every
> use, but which can be fixed by in the template.
> Finally, the current code does an unnecessary allocation for the epoll struct which should be part of the NetVConnection etc.
> and it takes a lock for the enable_queue which can be avoided by using the non-locking AtomicSSL.
> This work is also good preparation for evaluating libev or libevent as it will reduce the amount of code which
> will have to be changed.

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