| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Subject: | Re: Interrupts vs signals |
| Date: | 2024-07-08 02:56:38 |
| Message-ID: | CA+hUKGLAZCxzyhyoYz0BmGkqkmj-38ZfToF1GqNYhU+Br+XCLQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
Here's an updated version of this patch.
The main idea is that SendProcSignal(pid, PROCSIGNAL_XXX, procno)
becomes SendInterrupt(INTERRUPT_XXX, procno), and all the pending
interrupt global variables and pss_procsignalFlags[] go away, along
with the SIGUSR1 handler. The interrupts are compressed into a single
bitmap. See commit message for more details.
The patch is failing on Windows CI for reasons I haven't debugged yet,
but I wanted to share what I have so far. Work in progress!
Here is my attempt to survey the use of signals and write down what I
think we might do about them all so far, to give the context for this
patch:
https://wiki.postgresql.org/wiki/Signals
Comments, corrections, edits very welcome.
| Attachment | Content-Type | Size |
|---|---|---|
| v2-0001-Redesign-interrupts-remove-ProcSignals.patch | text/x-patch | 127.3 KB |
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