[jira] [Commented] (MESOS-8673) Fix os::open to use CreateFile in overlapped mode

["Andrew Schwartzmeyer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-8673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16425057#comment-16425057 ] 

Andrew Schwartzmeyer commented on MESOS-8673:
---------------------------------------------

We should probably add another issue for adding overlapped-ness to it.

> Fix os::open to use CreateFile in overlapped mode
> -------------------------------------------------
>
>                 Key: MESOS-8673
>                 URL: https://issues.apache.org/jira/browse/MESOS-8673
>             Project: Mesos
>          Issue Type: Task
>            Reporter: Andrew Schwartzmeyer
>            Assignee: Andrew Schwartzmeyer
>            Priority: Major
>              Labels: stout, windows
>
> Because we need to keep the existing API of {{os::open}} (which is POSIX-y and currently uses the CRT {{_open}} on Windows), we'll need to map all the possible values for {{int oflag, mode_t mode}} to equivalent semantics in {{CreateFile}}.
> Our intent is to open all files in overlapped mode by default; which can be read synchronously when needed (but the other way around is not possible). However, it may be that we'll need to use {{ReOpenFile}} to when sending file handles to child processes.



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