Re: pg_ctl/pg_rewind tests vs. slow AIX buildfarm members

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, Andres Freund <andres(at)anarazel(dot)de>, Noah Misch <noah(at)leadboat(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: pg_ctl/pg_rewind tests vs. slow AIX buildfarm members
Date: 2015-09-03 20:21:14
Message-ID: 20150903202114.GG2912@alvherre.pgsql
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Tom Lane wrote:
> Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> > There is no equivalent of execl, nor a cmd.exe exquivalent of the
> > shell's exec. But surely the equivalent of the fork/execl you're doing
> > here would be a simple CreateProcess(). I don't see why you need a shell
> > in the middle on Windows at all.
>
> The problem is to get the output redirection to work. I imagine it could
> be rewritten without involving the shell, but it'd be less than trivial
> (or at least, I'm not going to do it).

In the CreateProcess model, I think you can use startupInfo.hStdOutput,
see

https://msdn.microsoft.com/en-us/library/windows/desktop/ms686331%28v=vs.85%29.aspx
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682425%28v=vs.85%29.aspx

--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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