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| author | Thomas Munro <tmunro@postgresql.org> | 2023-03-15 17:38:11 +1300 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2023-03-15 17:57:12 +1300 |
| commit | a948e49e2ef11815be0b211723bfc5b53b7f75a8 (patch) | |
| tree | 00f15dbe881ef93930be988d429ce79d3ff861af /src/backend/parser/parse_expr.c | |
| parent | e4da2a44c17a36904d4d083f9a96e90041d28f76 (diff) | |
| download | postgresql-a948e49e2ef11815be0b211723bfc5b53b7f75a8.tar.gz postgresql-a948e49e2ef11815be0b211723bfc5b53b7f75a8.zip | |
Use nanosleep() to implement pg_usleep().
The previous coding based on select() had commentary about historical
portability concerns. Use POSIX nanosleep() instead.
This has independently been suggested a couple of times before, but
never managed to stick. Since recent and proposed work removes other
uses of select(), and associated code and comments relating to its
non-portable interaction with signals, it seems like a good time to tidy
up this case, too.
Also modernize the explanation of why WaitLatch() is a better way to
wait.
Reviewed-by: Nathan Bossart <nathandbossart@gmail.com>
Suggested-by: Paul Guo <paulguo@gmail.com>
Suggested-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAAKRu_b-q0hXCBUCAATh0Z4Zi6UkiC0k2DFgoD3nC-r3SkR3tg%40mail.gmail.com
Discussion: https://postgr.es/m/CABQrizfxpBLZT5mZeE0js5oCh1tqEWvcGF3vMRCv5P-RwUY5dQ@mail.gmail.com
Discussion: https://postgr.es/m/4902.1552349020@sss.pgh.pa.us
Diffstat (limited to 'src/backend/parser/parse_expr.c')
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