| From: | Naoya Anzai <nao-anzai(at)xc(dot)jp(dot)nec(dot)com> |
|---|---|
| To: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | Akio Iwaasa <aki-iwaasa(at)vt(dot)jp(dot)nec(dot)com> |
| Subject: | Why does txid_current() assign new transaction-id? |
| Date: | 2015-05-26 07:32:17 |
| Message-ID: | 116262CF971C844FB6E793F8809B51C6E8C89D@BPXM02GP.gisp.nec.co.jp |
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| Lists: | pgsql-hackers |
Hi,hackers!
I have a question about txid_current().
it is "Why does txid_current() assign new transaction-id?".
When we executes txid_current() outside of transaction block, it assigns new transaction-id.
I guess it doesn't need to assign a new txid because txid_current() is just a read-only function.
I found a replaceable function by walking through pg-code, that is GetStableLatestTransactionId(void).
I attached a patch which changing just 1-line.
Could you please check the code?
Regards,
Naoya
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Naoya Anzai
Engineering Department
NEC Solution Inovetors, Ltd.
E-Mail: nao-anzai(at)xc(dot)jp(dot)nec(dot)com
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| Attachment | Content-Type | Size |
|---|---|---|
| txid_current.patch | application/octet-stream | 396 bytes |
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