From: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
---|---|
To: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Usage of epoch in txid_current |
Date: | 2018-07-10 02:33:45 |
Message-ID: | CAMsr+YG5hxJjonNz-hcgzKakZd06LSL9t2593T87Q1--coCM0g@mail.gmail.com |
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Lists: | pgsql-hackers |
On 10 July 2018 at 10:32, Craig Ringer <craig(at)2ndquadrant(dot)com> wrote:
>
>
>> I think it's probably a good idea to make it very explicit when moving
>> between big and small transaction IDs, hence the including of the word
>> 'big' in variable and function names and the use of a function-like
>> macro (rather than implicit conversion, which C doesn't give me a good
>> way to prevent).
>
>
> The only way I know of to prevent it is to use a wrapper by-value struct.
>
>
... and that's what I get for not finishing the thread before replying.
Anyway, please consider the other point re txid_current() and the user
facing xid type.
--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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