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Rename assorted LWLock tranches.

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Choose names that fit into the conventions for wait event names
(particularly, that multi-word names are in the style MultiWordName)
and hopefully convey more information to non-hacker users than the
previous names did.

Also rename SerializablePredicateLockListLock to
SerializablePredicateListLock; the old name was long enough to cause
table formatting problems, plus the double occurrence of "Lock" seems
confusing/error-prone.

Also change a couple of particularly opaque LWLock field names.

Discussion: https://postgr.es/m/28683.1589405363@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2020-05-15 18:11:03 -04:00
parent a0ab4f4909
commit 36ac359d36
15 changed files with 311 additions and 267 deletions
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4
src/include/storage/proc.h
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@@ -188,10 +188,8 @@ struct PGPROC
XLogRecPtr clogGroupMemberLsn; /* WAL location of commit record for clog
* group member */
/* Per-backend LWLock. Protects fields below (but not group fields). */
LWLock backendLock;
/* Lock manager data, recording fast-path locks taken by this backend. */
LWLock fpInfoLock; /* protects per-backend fast-path state */
uint64 fpLockBits; /* lock modes held for each fast-path slot */
Oid fpRelId[FP_LOCK_SLOTS_PER_BACKEND]; /* slots for rel oids */
bool fpVXIDLock; /* are we holding a fast-path VXID lock? */