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From: Hayato Kuroda (Fujitsu) <[email protected]>
To: Aya Iwata (Fujitsu) <[email protected]>
To: 'Michael Paquier' <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: RE: [PROPOSAL] Termination of Background Workers for ALTER/DROP DATABASE
Date: Tue, 7 Oct 2025 02:00:18 +0000
Message-ID: <OSCPR01MB14966CBEA1C4F5967ABEE6AEAF5E0A@OSCPR01MB14966.jpnprd01.prod.outlook.com> (raw)
In-Reply-To: <OS7PR01MB119648846BA926C096CE016B6EAE3A@OS7PR01MB11964.jpnprd01.prod.outlook.com>
References: <OS7PR01MB11964335F36BE41021B62EAE8EAE4A@OS7PR01MB11964.jpnprd01.prod.outlook.com>
	<OSCPR01MB149662AEA64F4E66F494C2584F5E3A@OSCPR01MB14966.jpnprd01.prod.outlook.com>
	<[email protected]>
	<OS7PR01MB119648846BA926C096CE016B6EAE3A@OS7PR01MB11964.jpnprd01.prod.outlook.com>

Dear Iwata-san,

Thanks for updating the patch.

> I updated my patch using bgw_flags to set whether accept to terminate bgworker
> or not.
> And I also removed AcceptBackgroundWorkerCancel() function.
> Please check my attached patch.

```
+/*
+ * Cancel background workers.
+ */
+void
+CancelBackgroundWorkers(Oid databaseId, int cancel_flags)
```

Do we still need the cancel_flags? I cannot find other reasons to terminate
workers. Also the things I don't like is that BGWORKER_CANCEL_ADMIN_COMMANDS must
have the same value as BGWORKER_EXIT_AT_DATABASE_DROP. Only one flag exists but
it has 0x0004. Can we remove the argument and flags from the patch?

[1]: https://www.postgresql.org/message-id/OSCPR01MB149662AEA64F4E66F494C2584F5E3A%40OSCPR01MB14966.jpnpr...

Best regards,
Hayato Kuroda
FUJITSU LIMITED






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  Cc: [email protected], [email protected], [email protected]
  Subject: RE: [PROPOSAL] Termination of Background Workers for ALTER/DROP DATABASE
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