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Move each SLRU's lwlocks to a separate tranche.

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This makes it significantly easier to identify these lwlocks in
LWLOCK_STATS or Trace_lwlocks output.  It's also arguably better
from a modularity standpoint, since lwlock.c no longer needs to
know anything about the LWLock needs of the higher-level SLRU
facility.

Ildus Kurbangaliev, reviewd by Álvaro Herrera and by me.
This commit is contained in:
Robert Haas
2015-11-12 14:59:09 -05:00
parent c405918858
commit fe702a7b3f
9 changed files with 41 additions and 43 deletions
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4
src/backend/access/transam/multixact.c
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@@ -1838,10 +1838,10 @@ MultiXactShmemInit(void)
MultiXactMemberCtl->PagePrecedes = MultiXactMemberPagePrecedes;
SimpleLruInit(MultiXactOffsetCtl,
"MultiXactOffset Ctl", NUM_MXACTOFFSET_BUFFERS, 0,
"multixact_offset", NUM_MXACTOFFSET_BUFFERS, 0,
MultiXactOffsetControlLock, "pg_multixact/offsets");
SimpleLruInit(MultiXactMemberCtl,
"MultiXactMember Ctl", NUM_MXACTMEMBER_BUFFERS, 0,
"multixact_member", NUM_MXACTMEMBER_BUFFERS, 0,
MultiXactMemberControlLock, "pg_multixact/members");
/* Initialize our shared state struct */