Horton

Re: Interrupts vs signals

Heikki Linnakangas <hlinnaka@iki.fi>

View thread View on postgr.es
From: Heikki Linnakangas <hlinnaka@iki.fi>
To: Andres Freund <andres@anarazel.de>, Thomas Munro <thomas.munro@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, Robert Haas <robertmhaas@gmail.com>, Fujii Masao <masao.fujii@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2025-03-06T16:43:47Z
Lists: pgsql-hackers

Attachments

On 06/03/2025 02:47, Heikki Linnakangas wrote:
> Here's a new patch set. It includes the previous work, and also goes the 
> whole hog and replaces procsignals and many other signalling with 
> interrupts. It's based on Thomas's v3-0002-Redesign-interrupts-remove- 
> ProcSignals.patch much earlier in this thread.

And here's yet another version. It's the same at high level, but with a 
ton of little fixes.

One notable change is that I merged storage/interrupt.[ch] with 
postmaster/interrupt.[ch], so the awkwardness of having two files with 
same name is gone.

-- 
Heikki Linnakangas
Neon (https://neon.tech)

Commits

  1. Ignore SIGINT in walwriter and walsummarizer

  2. Split WaitEventSet functions to separate source file

  3. Use ModifyWaitEvent to update exit_on_postmaster_death

  4. Remove unused ShutdownLatchSupport() function

  5. Rename two functions that wake up other processes

  6. Use ProcNumbers instead of direct Latch pointers to address other procs

  7. Clean up WaitLatch calls that passed latch without WL_LATCH_SET

  8. Remove unneeded #include

  9. Remove unused latch

  10. Remove support for background workers without BGWORKER_SHMEM_ACCESS.