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Refactor some code related to wait events "BufferPin" and "Extension"

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The following changes are done:
- Addition of WaitEventBufferPin and WaitEventExtension, that hold a
list of wait events related to each category.
- Addition of two functions that encapsulate the list of wait events for
each category.
- Rename BUFFER_PIN to BUFFERPIN (only this wait event class used an
underscore, requiring a specific rule in the automation script).

These changes make a bit easier the automatic generation of all the code
and documentation related to wait events, as all the wait event
categories are now controlled by consistent structures and functions.

Author: Bertrand Drouvot
Discussion: https://postgr.es/m/c6f35117-4b20-4c78-1df5-d3056010dcf5@gmail.com
Discussion: https://postgr.es/m/77a86b3a-c4a8-5f5d-69b9-d70bbf2e9b98@gmail.com
This commit is contained in:
Michael Paquier
2023-07-03 11:01:02 +09:00
parent 8c12838001
commit 2aeaf80e57
11 changed files with 93 additions and 19 deletions
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2
src/backend/storage/buffer/bufmgr.c
View File

@@ -4901,7 +4901,7 @@ LockBufferForCleanup(Buffer buffer)
SetStartupBufferPinWaitBufId(-1);
}
else
ProcWaitForSignal(PG_WAIT_BUFFER_PIN);
ProcWaitForSignal(WAIT_EVENT_BUFFER_PIN);
/*
* Remove flag marking us as waiter. Normally this will not be set

2
src/backend/storage/ipc/standby.c
View File

@@ -840,7 +840,7 @@ ResolveRecoveryConflictWithBufferPin(void)
* SIGHUP signal handler, etc cannot do that because it uses the different
* latch from that ProcWaitForSignal() waits on.
*/
ProcWaitForSignal(PG_WAIT_BUFFER_PIN);
ProcWaitForSignal(WAIT_EVENT_BUFFER_PIN);
if (got_standby_delay_timeout)
SendRecoveryConflictWithBufferPin(PROCSIG_RECOVERY_CONFLICT_BUFFERPIN);