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Add context type field to pg_backend_memory_contexts

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Since we now (as of v17) have 4 MemoryContext types, the type of context
seems like useful information to include in the pg_backend_memory_contexts
view.  Here we add that.

Reviewed-by: David Christensen, Michael Paquier
Discussion: https://postgr.es/m/CAApHDvrXX1OR09Zjb5TnB0AwCKze9exZN%3D9Nxxg1ZCVV8W-3BA%40mail.gmail.com
This commit is contained in:
David Rowley
2024-07-01 21:19:01 +12:00
parent e26d313bad
commit 12227a1d5f
7 changed files with 53 additions and 22 deletions
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35
src/backend/utils/adt/mcxtfuncs.c
View File

@ -36,7 +36,7 @@ PutMemoryContextsStatsTupleStore(Tuplestorestate *tupstore,
TupleDesc tupdesc, MemoryContext context,
const char *parent, int level)
{
#define PG_GET_BACKEND_MEMORY_CONTEXTS_COLS 9
#define PG_GET_BACKEND_MEMORY_CONTEXTS_COLS 10
Datum values[PG_GET_BACKEND_MEMORY_CONTEXTS_COLS];
bool nulls[PG_GET_BACKEND_MEMORY_CONTEXTS_COLS];
@ -44,6 +44,7 @@ PutMemoryContextsStatsTupleStore(Tuplestorestate *tupstore,
MemoryContext child;
const char *name;
const char *ident;
const char *type;
Assert(MemoryContextIsValid(context));
@ -96,12 +97,32 @@ PutMemoryContextsStatsTupleStore(Tuplestorestate *tupstore,
else
nulls[2] = true;
values[3] = Int32GetDatum(level);
values[4] = Int64GetDatum(stat.totalspace);
values[5] = Int64GetDatum(stat.nblocks);
values[6] = Int64GetDatum(stat.freespace);
values[7] = Int64GetDatum(stat.freechunks);
values[8] = Int64GetDatum(stat.totalspace - stat.freespace);
switch (context->type)
{
case T_AllocSetContext:
type = "AllocSet";
break;
case T_GenerationContext:
type = "Generation";
break;
case T_SlabContext:
type = "Slab";
break;
case T_BumpContext:
type = "Bump";
break;
default:
type = "???";
break;
}
values[3] = CStringGetTextDatum(type);
values[4] = Int32GetDatum(level);
values[5] = Int64GetDatum(stat.totalspace);
values[6] = Int64GetDatum(stat.nblocks);
values[7] = Int64GetDatum(stat.freespace);
values[8] = Int64GetDatum(stat.freechunks);
values[9] = Int64GetDatum(stat.totalspace - stat.freespace);
tuplestore_putvalues(tupstore, tupdesc, values, nulls);
for (child = context->firstchild; child != NULL; child = child->nextchild)