Re: system views for walsender activity - Mailing list pgsql-hackers

From Robert Haas
Subject Re: system views for walsender activity
Date
Msg-id AANLkTi=mBL8sZDpx8gC35mJHxEV8q6K0qBbYJuw41TDH@mail.gmail.com
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In response to Re: system views for walsender activity  (Magnus Hagander <magnus@hagander.net>)
Responses Re: system views for walsender activity  (Magnus Hagander <magnus@hagander.net>)
List pgsql-hackers
On Tue, Jan 11, 2011 at 7:24 AM, Magnus Hagander <magnus@hagander.net> wrote:
>> No, do this at top
>>
>> if (walsnd->state == state)
>>  return;
>>
>> Keep spinlocks when actually setting it.

I think this is safe...

> Aha. Thanks for the pointers, pfa a new version.

...but I think you also need to take the spinlock when reading the value.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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