| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Unportable implementation of background worker start |
| Date: | 2017-04-20 23:39:15 |
| Message-ID: | 4103.1492731555@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2017-04-20 19:23:28 -0400, Tom Lane wrote:
>> or are the HANDLEs in a Windows WaitEventSet not inheritable
>> resources?
> I think we have control over that. According to
> https://msdn.microsoft.com/en-us/library/windows/desktop/ms724466(v=vs.85).aspx
> CreateProcess() has to be called with bInheritHandles = true (which we
> do for backends), and SECURITY_ATTRIBUTES.bInheritHandle has to be true
> too. The latter we already only do for InitSharedLatch(), but not for
> InitLatch(), nor for the WSACreateEvent's created for sockets - those
> apparently can never be inherited.
> So that kind of sounds like it should be doable.
Ah, good. I'll add a comment about that and press on.
regards, tom lane
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