Horton

Remove last traces of HPPA support

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-hackers@lists.postgresql.org
Date: 2023-10-19T15:16:28Z
Lists: pgsql-hackers

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We removed support for the HP-UX OS in v16, but left in support
for the PA-RISC architecture, mainly because I thought that its
spinlock mechanism is weird enough to be a good stress test
for our spinlock infrastructure.  It still is that, but my
one remaining HPPA machine has gone to the great recycle heap
in the sky.  There seems little point in keeping around nominal
support for an architecture that we can't test and no one is
using anymore.

Hence, the attached removes the remaining support for HPPA.
Any objections?

			regards, tom lane

Commits

  1. Require memory barrier support.

  2. Require compiler barrier support.

  3. Remove --disable-atomics, require 32 bit atomics.

  4. Remove --disable-spinlocks.

  5. Remove support for HPPA (a/k/a PA-RISC) architecture.

  6. Add a basic atomic ops API abstracting away platform/architecture details.