mirror of
https://github.com/postgres/postgres.git
synced 2025-11-24 00:23:06 +03:00
dbbca2cf29
as determined by include-what-you-use (IWYU) While IWYU also suggests to *add* a bunch of #include's (which is its main purpose), this patch does not do that. In some cases, a more specific #include replaces another less specific one. Some manual adjustments of the automatic result: - IWYU currently doesn't know about includes that provide global variable declarations (like -Wmissing-variable-declarations), so those includes are being kept manually. - All includes for port(ability) headers are being kept for now, to play it safe. - No changes of catalog/pg_foo.h to catalog/pg_foo_d.h, to keep the patch from exploding in size. Note that this patch touches just *.c files, so nothing declared in header files changes in hidden ways. As a small example, in src/backend/access/transam/rmgr.c, some IWYU pragma annotations are added to handle a special case there. Discussion: https://www.postgresql.org/message-id/flat/af837490-6b2f-46df-ba05-37ea6a6653fc%40eisentraut.org
144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* amapi.c
|
|
* Support routines for API for Postgres index access methods.
|
|
*
|
|
* Copyright (c) 2015-2024, PostgreSQL Global Development Group
|
|
*
|
|
*
|
|
* IDENTIFICATION
|
|
* src/backend/access/index/amapi.c
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#include "postgres.h"
|
|
|
|
#include "access/amapi.h"
|
|
#include "access/htup_details.h"
|
|
#include "catalog/pg_am.h"
|
|
#include "catalog/pg_opclass.h"
|
|
#include "utils/fmgrprotos.h"
|
|
#include "utils/syscache.h"
|
|
|
|
|
|
/*
|
|
* GetIndexAmRoutine - call the specified access method handler routine to get
|
|
* its IndexAmRoutine struct, which will be palloc'd in the caller's context.
|
|
*
|
|
* Note that if the amhandler function is built-in, this will not involve
|
|
* any catalog access. It's therefore safe to use this while bootstrapping
|
|
* indexes for the system catalogs. relcache.c relies on that.
|
|
*/
|
|
IndexAmRoutine *
|
|
GetIndexAmRoutine(Oid amhandler)
|
|
{
|
|
Datum datum;
|
|
IndexAmRoutine *routine;
|
|
|
|
datum = OidFunctionCall0(amhandler);
|
|
routine = (IndexAmRoutine *) DatumGetPointer(datum);
|
|
|
|
if (routine == NULL || !IsA(routine, IndexAmRoutine))
|
|
elog(ERROR, "index access method handler function %u did not return an IndexAmRoutine struct",
|
|
amhandler);
|
|
|
|
return routine;
|
|
}
|
|
|
|
/*
|
|
* GetIndexAmRoutineByAmId - look up the handler of the index access method
|
|
* with the given OID, and get its IndexAmRoutine struct.
|
|
*
|
|
* If the given OID isn't a valid index access method, returns NULL if
|
|
* noerror is true, else throws error.
|
|
*/
|
|
IndexAmRoutine *
|
|
GetIndexAmRoutineByAmId(Oid amoid, bool noerror)
|
|
{
|
|
HeapTuple tuple;
|
|
Form_pg_am amform;
|
|
regproc amhandler;
|
|
|
|
/* Get handler function OID for the access method */
|
|
tuple = SearchSysCache1(AMOID, ObjectIdGetDatum(amoid));
|
|
if (!HeapTupleIsValid(tuple))
|
|
{
|
|
if (noerror)
|
|
return NULL;
|
|
elog(ERROR, "cache lookup failed for access method %u",
|
|
amoid);
|
|
}
|
|
amform = (Form_pg_am) GETSTRUCT(tuple);
|
|
|
|
/* Check if it's an index access method as opposed to some other AM */
|
|
if (amform->amtype != AMTYPE_INDEX)
|
|
{
|
|
if (noerror)
|
|
{
|
|
ReleaseSysCache(tuple);
|
|
return NULL;
|
|
}
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
|
|
errmsg("access method \"%s\" is not of type %s",
|
|
NameStr(amform->amname), "INDEX")));
|
|
}
|
|
|
|
amhandler = amform->amhandler;
|
|
|
|
/* Complain if handler OID is invalid */
|
|
if (!RegProcedureIsValid(amhandler))
|
|
{
|
|
if (noerror)
|
|
{
|
|
ReleaseSysCache(tuple);
|
|
return NULL;
|
|
}
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
|
|
errmsg("index access method \"%s\" does not have a handler",
|
|
NameStr(amform->amname))));
|
|
}
|
|
|
|
ReleaseSysCache(tuple);
|
|
|
|
/* And finally, call the handler function to get the API struct. */
|
|
return GetIndexAmRoutine(amhandler);
|
|
}
|
|
|
|
|
|
/*
|
|
* Ask appropriate access method to validate the specified opclass.
|
|
*/
|
|
Datum
|
|
amvalidate(PG_FUNCTION_ARGS)
|
|
{
|
|
Oid opclassoid = PG_GETARG_OID(0);
|
|
bool result;
|
|
HeapTuple classtup;
|
|
Form_pg_opclass classform;
|
|
Oid amoid;
|
|
IndexAmRoutine *amroutine;
|
|
|
|
classtup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opclassoid));
|
|
if (!HeapTupleIsValid(classtup))
|
|
elog(ERROR, "cache lookup failed for operator class %u", opclassoid);
|
|
classform = (Form_pg_opclass) GETSTRUCT(classtup);
|
|
|
|
amoid = classform->opcmethod;
|
|
|
|
ReleaseSysCache(classtup);
|
|
|
|
amroutine = GetIndexAmRoutineByAmId(amoid, false);
|
|
|
|
if (amroutine->amvalidate == NULL)
|
|
elog(ERROR, "function amvalidate is not defined for index access method %u",
|
|
amoid);
|
|
|
|
result = amroutine->amvalidate(opclassoid);
|
|
|
|
pfree(amroutine);
|
|
|
|
PG_RETURN_BOOL(result);
|
|
}
|