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author | Tom Lane <tgl@sss.pgh.pa.us> | 2011-08-09 15:30:51 -0400 |
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committer | Tom Lane <tgl@sss.pgh.pa.us> | 2011-08-09 15:30:51 -0400 |
commit | 6760a4d4029121981bf3ec24847ddfbacecc070d (patch) | |
tree | feb33208524b430e32fefd2c11158235ba1306a6 /src/tutorial/funcs.c | |
parent | 028a0c5a2913f18c954845cc014786912f39fa30 (diff) | |
download | postgresql-6760a4d4029121981bf3ec24847ddfbacecc070d.tar.gz postgresql-6760a4d4029121981bf3ec24847ddfbacecc070d.zip |
Documentation improvement and minor code cleanups for the latch facility.
Improve the documentation around weak-memory-ordering risks, and do a pass
of general editorialization on the comments in the latch code. Make the
Windows latch code more like the Unix latch code where feasible; in
particular provide the same Assert checks in both implementations.
Fix poorly-placed WaitLatch call in syncrep.c.
This patch resolves, for the moment, concerns around weak-memory-ordering
bugs in latch-related code: we have documented the restrictions and checked
that existing calls meet them. In 9.2 I hope that we will install suitable
memory barrier instructions in SetLatch/ResetLatch, so that their callers
don't need to be quite so careful.
Diffstat (limited to 'src/tutorial/funcs.c')
0 files changed, 0 insertions, 0 deletions