mirror of https://github.com/postgres/postgres
pgstat: Create memory contexts below TopMemoryContext
So far they were created below CacheMemoryContext. However, that's not guaranteed to exist in all situations, leading to memory contexts created as top-level contexts. There isn't actually a good reason anymore to create them below CacheMemoryContext, so just creating them below TopMemoryContext seems the best approach. Reported-by: Reid Thompson <reid.thompson@crunchydata.com> Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com> Reviewed-by: Andres Freund <andres@anarazel.de> Author: "Drouvot, Bertrand" <bdrouvot@amazon.com> Discussion: https://postgr.es/m/b948b729-42fe-f88c-2f4a-0e65d84c049b@amazon.com Backpatch: 15-
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@ -1069,7 +1069,7 @@ pgstat_prep_pending_entry(PgStat_Kind kind, Oid dboid, Oid objoid, bool *created
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if (unlikely(!pgStatPendingContext))
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{
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pgStatPendingContext =
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AllocSetContextCreate(CacheMemoryContext,
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AllocSetContextCreate(TopMemoryContext,
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"PgStat Pending",
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ALLOCSET_SMALL_SIZES);
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}
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@ -992,12 +992,12 @@ pgstat_setup_memcxt(void)
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{
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if (unlikely(!pgStatSharedRefContext))
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pgStatSharedRefContext =
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AllocSetContextCreate(CacheMemoryContext,
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AllocSetContextCreate(TopMemoryContext,
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"PgStat Shared Ref",
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ALLOCSET_SMALL_SIZES);
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if (unlikely(!pgStatEntryRefHashContext))
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pgStatEntryRefHashContext =
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AllocSetContextCreate(CacheMemoryContext,
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AllocSetContextCreate(TopMemoryContext,
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"PgStat Shared Ref Hash",
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ALLOCSET_SMALL_SIZES);
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}
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