blutils.c File Reference

#include "postgres.h"
#include "access/amapi.h"
#include "access/generic_xlog.h"
#include "catalog/index.h"
#include "storage/lmgr.h"
#include "miscadmin.h"
#include "storage/bufmgr.h"
#include "storage/indexfsm.h"
#include "utils/memutils.h"
#include "access/reloptions.h"
#include "storage/freespace.h"
#include "bloom.h"

Include dependency graph for blutils.c:

Go to the source code of this file.

Macros
#define	GETWORD(x, i)   ( *( (BloomSignatureWord *)(x) + ( (i) / SIGNWORDBITS ) ) )
#define	CLRBIT(x, i)   GETWORD(x,i) &= ~( 0x01 << ( (i) % SIGNWORDBITS ) )
#define	SETBIT(x, i)   GETWORD(x,i) |= ( 0x01 << ( (i) % SIGNWORDBITS ) )
#define	GETBIT(x, i)   ( (GETWORD(x,i) >> ( (i) % SIGNWORDBITS )) & 0x01 )

Functions
	PG_FUNCTION_INFO_V1 (blhandler)
static int32	myRand (void)
static void	mySrand (uint32 seed)
void	_PG_init (void)
static BloomOptions *	makeDefaultBloomOptions (void)
Datum	blhandler (PG_FUNCTION_ARGS)
void	initBloomState (BloomState *state, Relation index)
void	signValue (BloomState *state, BloomSignatureWord *sign, Datum value, int attno)
BloomTuple *	BloomFormTuple (BloomState *state, ItemPointer iptr, Datum *values, bool *isnull)
bool	BloomPageAddItem (BloomState *state, Page page, BloomTuple *tuple)
Buffer	BloomNewBuffer (Relation index)
void	BloomInitPage (Page page, uint16 flags)
void	BloomFillMetapage (Relation index, Page metaPage)
void	BloomInitMetapage (Relation index)
bytea *	bloptions (Datum reloptions, bool validate)

Variables
static relopt_kind	bl_relopt_kind
static relopt_parse_elt	bl_relopt_tab [INDEX_MAX_KEYS+1]
static int32	next

Macro Definition Documentation

CLRBIT

#define CLRBIT	(		x,
			i
	)		GETWORD(x,i) &= ~( 0x01 << ( (i) % SIGNWORDBITS ) )

Definition at line 32 of file blutils.c.

Referenced by _hash_freeovflpage(), and hash_xlog_squeeze_page().

GETBIT

#define GETBIT	(		x,
			i
	)		( (GETWORD(x,i) >> ( (i) % SIGNWORDBITS )) & 0x01 )

Definition at line 34 of file blutils.c.

Referenced by _intbig_contains(), _intbig_overlap(), checkcondition_bit(), cnt_sml_sign_common(), gist_qe(), gist_te(), and gtrgm_consistent().

GETWORD

#define GETWORD	(		x,
			i
	)		( *( (BloomSignatureWord *)(x) + ( (i) / SIGNWORDBITS ) ) )

Definition at line 31 of file blutils.c.

SETBIT

#define SETBIT	(		x,
			i
	)		GETWORD(x,i) |= ( 0x01 << ( (i) % SIGNWORDBITS ) )

Definition at line 33 of file blutils.c.

Referenced by _hash_addovflpage(), hash_xlog_add_ovfl_page(), makesign(), and signValue().

Function Documentation

_PG_init()

void _PG_init

(

void

)

Definition at line 53 of file blutils.c.

References AccessExclusiveLock, add_int_reloption(), add_reloption_kind(), bl_relopt_kind, buf, DEFAULT_BLOOM_BITS, DEFAULT_BLOOM_LENGTH, i, INDEX_MAX_KEYS, MAX_BLOOM_BITS, MAX_BLOOM_LENGTH, MemoryContextStrdup(), relopt_parse_elt::offset, offsetof, relopt_parse_elt::optname, relopt_parse_elt::opttype, RELOPT_TYPE_INT, snprintf, and TopMemoryContext.

{
    int         i;
    char        buf[16];

    bl_relopt_kind = add_reloption_kind();

    /* Option for length of signature */
    add_int_reloption(bl_relopt_kind, "length",
                      "Length of signature in bits",
                      DEFAULT_BLOOM_LENGTH, 1, MAX_BLOOM_LENGTH,
                      AccessExclusiveLock);
    bl_relopt_tab[0].optname = "length";
    bl_relopt_tab[0].opttype = RELOPT_TYPE_INT;
    bl_relopt_tab[0].offset = offsetof(BloomOptions, bloomLength);

    /* Number of bits for each possible index column: col1, col2, ... */
    for (i = 0; i < INDEX_MAX_KEYS; i++)
    {
        snprintf(buf, sizeof(buf), "col%d", i + 1);
        add_int_reloption(bl_relopt_kind, buf,
                          "Number of bits generated for each index column",
                          DEFAULT_BLOOM_BITS, 1, MAX_BLOOM_BITS,
                          AccessExclusiveLock);
        bl_relopt_tab[i + 1].optname = MemoryContextStrdup(TopMemoryContext,
                                                           buf);
        bl_relopt_tab[i + 1].opttype = RELOPT_TYPE_INT;
        bl_relopt_tab[i + 1].offset = offsetof(BloomOptions, bitSize[0]) + sizeof(int) * i;
    }
}

blhandler()

Datum blhandler

(

PG_FUNCTION_ARGS

)

Definition at line 107 of file blutils.c.

References IndexAmRoutine::ambeginscan, IndexAmRoutine::ambuild, IndexAmRoutine::ambuildempty, IndexAmRoutine::ambuildphasename, IndexAmRoutine::ambulkdelete, IndexAmRoutine::amcanbackward, IndexAmRoutine::amcaninclude, IndexAmRoutine::amcanmulticol, IndexAmRoutine::amcanorder, IndexAmRoutine::amcanorderbyop, IndexAmRoutine::amcanparallel, IndexAmRoutine::amcanreturn, IndexAmRoutine::amcanunique, IndexAmRoutine::amclusterable, IndexAmRoutine::amcostestimate, IndexAmRoutine::amendscan, IndexAmRoutine::amestimateparallelscan, IndexAmRoutine::amgetbitmap, IndexAmRoutine::amgettuple, IndexAmRoutine::aminitparallelscan, IndexAmRoutine::aminsert, IndexAmRoutine::amkeytype, IndexAmRoutine::ammarkpos, IndexAmRoutine::amoptionalkey, IndexAmRoutine::amoptions, IndexAmRoutine::amparallelrescan, IndexAmRoutine::ampredlocks, IndexAmRoutine::amproperty, IndexAmRoutine::amrescan, IndexAmRoutine::amrestrpos, IndexAmRoutine::amsearcharray, IndexAmRoutine::amsearchnulls, IndexAmRoutine::amstorage, IndexAmRoutine::amstrategies, IndexAmRoutine::amsupport, IndexAmRoutine::amvacuumcleanup, IndexAmRoutine::amvalidate, blbeginscan(), blbuild(), blbuildempty(), blbulkdelete(), blcostestimate(), blendscan(), blgetbitmap(), blinsert(), BLOOM_NPROC, BLOOM_NSTRATEGIES, bloptions(), blrescan(), blvacuumcleanup(), blvalidate(), InvalidOid, makeNode, and PG_RETURN_POINTER.

{
    IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);

    amroutine->amstrategies = BLOOM_NSTRATEGIES;
    amroutine->amsupport = BLOOM_NPROC;
    amroutine->amcanorder = false;
    amroutine->amcanorderbyop = false;
    amroutine->amcanbackward = false;
    amroutine->amcanunique = false;
    amroutine->amcanmulticol = true;
    amroutine->amoptionalkey = true;
    amroutine->amsearcharray = false;
    amroutine->amsearchnulls = false;
    amroutine->amstorage = false;
    amroutine->amclusterable = false;
    amroutine->ampredlocks = false;
    amroutine->amcanparallel = false;
    amroutine->amcaninclude = false;
    amroutine->amkeytype = InvalidOid;

    amroutine->ambuild = blbuild;
    amroutine->ambuildempty = blbuildempty;
    amroutine->aminsert = blinsert;
    amroutine->ambulkdelete = blbulkdelete;
    amroutine->amvacuumcleanup = blvacuumcleanup;
    amroutine->amcanreturn = NULL;
    amroutine->amcostestimate = blcostestimate;
    amroutine->amoptions = bloptions;
    amroutine->amproperty = NULL;
    amroutine->ambuildphasename = NULL;
    amroutine->amvalidate = blvalidate;
    amroutine->ambeginscan = blbeginscan;
    amroutine->amrescan = blrescan;
    amroutine->amgettuple = NULL;
    amroutine->amgetbitmap = blgetbitmap;
    amroutine->amendscan = blendscan;
    amroutine->ammarkpos = NULL;
    amroutine->amrestrpos = NULL;
    amroutine->amestimateparallelscan = NULL;
    amroutine->aminitparallelscan = NULL;
    amroutine->amparallelrescan = NULL;

    PG_RETURN_POINTER(amroutine);
}

BloomFillMetapage()

void BloomFillMetapage	(	Relation	index,
		Page	metaPage
	)

Definition at line 419 of file blutils.c.

References Assert, BLOOM_MAGICK_NUMBER, BLOOM_META, BloomInitPage(), BloomPageGetMeta, BloomMetaPageData::magickNumber, makeDefaultBloomOptions(), BloomMetaPageData::opts, and RelationData::rd_options.

Referenced by blbuildempty(), and BloomInitMetapage().

{
    BloomOptions *opts;
    BloomMetaPageData *metadata;

    /*
     * Choose the index's options.  If reloptions have been assigned, use
     * those, otherwise create default options.
     */
    opts = (BloomOptions *) index->rd_options;
    if (!opts)
        opts = makeDefaultBloomOptions();

    /*
     * Initialize contents of meta page, including a copy of the options,
     * which are now frozen for the life of the index.
     */
    BloomInitPage(metaPage, BLOOM_META);
    metadata = BloomPageGetMeta(metaPage);
    memset(metadata, 0, sizeof(BloomMetaPageData));
    metadata->magickNumber = BLOOM_MAGICK_NUMBER;
    metadata->opts = *opts;
    ((PageHeader) metaPage)->pd_lower += sizeof(BloomMetaPageData);

    /* If this fails, probably FreeBlockNumberArray size calc is wrong: */
    Assert(((PageHeader) metaPage)->pd_lower <= ((PageHeader) metaPage)->pd_upper);
}

BloomFormTuple()

BloomTuple* BloomFormTuple	(	BloomState *	state,
		ItemPointer	iptr,
		Datum *	values,
		bool *	isnull
	)

Definition at line 289 of file blutils.c.

References BloomTuple::heapPtr, i, BloomState::nColumns, palloc0(), BloomTuple::sign, signValue(), and BloomState::sizeOfBloomTuple.

Referenced by blinsert(), and bloomBuildCallback().

{
    int         i;
    BloomTuple *res = (BloomTuple *) palloc0(state->sizeOfBloomTuple);

    res->heapPtr = *iptr;

    /* Blooming each column */
    for (i = 0; i < state->nColumns; i++)
    {
        /* skip nulls */
        if (isnull[i])
            continue;

        signValue(state, res->sign, values[i], i);
    }

    return res;
}

BloomInitMetapage()

void BloomInitMetapage

(

Relation

index

)

Definition at line 451 of file blutils.c.

References Assert, BLOOM_METAPAGE_BLKNO, BloomFillMetapage(), BloomNewBuffer(), BufferGetBlockNumber(), GENERIC_XLOG_FULL_IMAGE, GenericXLogFinish(), GenericXLogRegisterBuffer(), GenericXLogStart(), and UnlockReleaseBuffer().

Referenced by blbuild().

{
    Buffer      metaBuffer;
    Page        metaPage;
    GenericXLogState *state;

    /*
     * Make a new page; since it is first page it should be associated with
     * block number 0 (BLOOM_METAPAGE_BLKNO).
     */
    metaBuffer = BloomNewBuffer(index);
    Assert(BufferGetBlockNumber(metaBuffer) == BLOOM_METAPAGE_BLKNO);

    /* Initialize contents of meta page */
    state = GenericXLogStart(index);
    metaPage = GenericXLogRegisterBuffer(state, metaBuffer,
                                         GENERIC_XLOG_FULL_IMAGE);
    BloomFillMetapage(index, metaPage);
    GenericXLogFinish(state);

    UnlockReleaseBuffer(metaBuffer);
}

BloomInitPage()

void BloomInitPage	(	Page	page,
		uint16	flags
	)

Definition at line 403 of file blutils.c.

References BloomPageOpaqueData::bloom_page_id, BLOOM_PAGE_ID, BloomPageGetOpaque, BloomPageOpaqueData::flags, and PageInit().

Referenced by blinsert(), BloomFillMetapage(), and initCachedPage().

{
    BloomPageOpaque opaque;

    PageInit(page, BLCKSZ, sizeof(BloomPageOpaqueData));

    opaque = BloomPageGetOpaque(page);
    memset(opaque, 0, sizeof(BloomPageOpaqueData));
    opaque->flags = flags;
    opaque->bloom_page_id = BLOOM_PAGE_ID;
}

BloomNewBuffer()

Buffer BloomNewBuffer

(

Relation

index

)

Definition at line 349 of file blutils.c.

References BloomPageIsDeleted, BUFFER_LOCK_EXCLUSIVE, BUFFER_LOCK_UNLOCK, BufferGetPage, ConditionalLockBuffer(), ExclusiveLock, GetFreeIndexPage(), InvalidBlockNumber, LockBuffer(), LockRelationForExtension(), P_NEW, PageIsNew, ReadBuffer(), RELATION_IS_LOCAL, ReleaseBuffer(), and UnlockRelationForExtension().

Referenced by blinsert(), BloomInitMetapage(), and flushCachedPage().

{
    Buffer      buffer;
    bool        needLock;

    /* First, try to get a page from FSM */
    for (;;)
    {
        BlockNumber blkno = GetFreeIndexPage(index);

        if (blkno == InvalidBlockNumber)
            break;

        buffer = ReadBuffer(index, blkno);

        /*
         * We have to guard against the possibility that someone else already
         * recycled this page; the buffer may be locked if so.
         */
        if (ConditionalLockBuffer(buffer))
        {
            Page        page = BufferGetPage(buffer);

            if (PageIsNew(page))
                return buffer;  /* OK to use, if never initialized */

            if (BloomPageIsDeleted(page))
                return buffer;  /* OK to use */

            LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
        }

        /* Can't use it, so release buffer and try again */
        ReleaseBuffer(buffer);
    }

    /* Must extend the file */
    needLock = !RELATION_IS_LOCAL(index);
    if (needLock)
        LockRelationForExtension(index, ExclusiveLock);

    buffer = ReadBuffer(index, P_NEW);
    LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);

    if (needLock)
        UnlockRelationForExtension(index, ExclusiveLock);

    return buffer;
}

BloomPageAddItem()

bool BloomPageAddItem	(	BloomState *	state,
		Page	page,
		BloomTuple *	tuple
	)

Definition at line 314 of file blutils.c.

References Assert, BloomPageGetFreeSpace, BloomPageGetOpaque, BloomPageGetTuple, BloomPageIsDeleted, BloomPageOpaqueData::maxoff, PageIsNew, and BloomState::sizeOfBloomTuple.

Referenced by blinsert(), and bloomBuildCallback().

{
    BloomTuple *itup;
    BloomPageOpaque opaque;
    Pointer     ptr;

    /* We shouldn't be pointed to an invalid page */
    Assert(!PageIsNew(page) && !BloomPageIsDeleted(page));

    /* Does new tuple fit on the page? */
    if (BloomPageGetFreeSpace(state, page) < state->sizeOfBloomTuple)
        return false;

    /* Copy new tuple to the end of page */
    opaque = BloomPageGetOpaque(page);
    itup = BloomPageGetTuple(state, page, opaque->maxoff + 1);
    memcpy((Pointer) itup, (Pointer) tuple, state->sizeOfBloomTuple);

    /* Adjust maxoff and pd_lower */
    opaque->maxoff++;
    ptr = (Pointer) BloomPageGetTuple(state, page, opaque->maxoff + 1);
    ((PageHeader) page)->pd_lower = ptr - page;

    /* Assert we didn't overrun available space */
    Assert(((PageHeader) page)->pd_lower <= ((PageHeader) page)->pd_upper);

    return true;
}

bloptions()

bytea* bloptions	(	Datum	reloptions,
		bool	validate
	)

Definition at line 478 of file blutils.c.

References allocateReloptStruct(), bl_relopt_kind, fillRelOptions(), lengthof, options, parseRelOptions(), and SIGNWORDBITS.

Referenced by blhandler().

{
    relopt_value *options;
    int         numoptions;
    BloomOptions *rdopts;

    /* Parse the user-given reloptions */
    options = parseRelOptions(reloptions, validate, bl_relopt_kind, &numoptions);
    rdopts = allocateReloptStruct(sizeof(BloomOptions), options, numoptions);
    fillRelOptions((void *) rdopts, sizeof(BloomOptions), options, numoptions,
                   validate, bl_relopt_tab, lengthof(bl_relopt_tab));

    /* Convert signature length from # of bits to # to words, rounding up */
    rdopts->bloomLength = (rdopts->bloomLength + SIGNWORDBITS - 1) / SIGNWORDBITS;

    return (bytea *) rdopts;
}

initBloomState()

void initBloomState	(	BloomState *	state,
		Relation	index
	)

Definition at line 157 of file blutils.c.

References BLOOM_HASH_PROC, BLOOM_MAGICK_NUMBER, BLOOM_METAPAGE_BLKNO, BloomOptions::bloomLength, BloomPageGetMeta, BloomPageIsMeta, BLOOMTUPLEHDRSZ, BUFFER_LOCK_SHARE, BufferGetPage, BloomState::collations, CurrentMemoryContext, elog, ERROR, fmgr_info_copy(), BloomState::hashFn, i, index_getprocinfo(), LockBuffer(), BloomMetaPageData::magickNumber, MemoryContextAlloc(), TupleDescData::natts, BloomState::nColumns, BloomMetaPageData::opts, BloomState::opts, RelationData::rd_amcache, RelationData::rd_att, RelationData::rd_indcollation, RelationData::rd_indexcxt, ReadBuffer(), BloomState::sizeOfBloomTuple, and UnlockReleaseBuffer().

Referenced by blbeginscan(), blbuild(), blbulkdelete(), and blinsert().

{
    int         i;

    state->nColumns = index->rd_att->natts;

    /* Initialize hash function for each attribute */
    for (i = 0; i < index->rd_att->natts; i++)
    {
        fmgr_info_copy(&(state->hashFn[i]),
                       index_getprocinfo(index, i + 1, BLOOM_HASH_PROC),
                       CurrentMemoryContext);
        state->collations[i] = index->rd_indcollation[i];
    }

    /* Initialize amcache if needed with options from metapage */
    if (!index->rd_amcache)
    {
        Buffer      buffer;
        Page        page;
        BloomMetaPageData *meta;
        BloomOptions *opts;

        opts = MemoryContextAlloc(index->rd_indexcxt, sizeof(BloomOptions));

        buffer = ReadBuffer(index, BLOOM_METAPAGE_BLKNO);
        LockBuffer(buffer, BUFFER_LOCK_SHARE);

        page = BufferGetPage(buffer);

        if (!BloomPageIsMeta(page))
            elog(ERROR, "Relation is not a bloom index");
        meta = BloomPageGetMeta(BufferGetPage(buffer));

        if (meta->magickNumber != BLOOM_MAGICK_NUMBER)
            elog(ERROR, "Relation is not a bloom index");

        *opts = meta->opts;

        UnlockReleaseBuffer(buffer);

        index->rd_amcache = (void *) opts;
    }

    memcpy(&state->opts, index->rd_amcache, sizeof(state->opts));
    state->sizeOfBloomTuple = BLOOMTUPLEHDRSZ +
        sizeof(BloomSignatureWord) * state->opts.bloomLength;
}

makeDefaultBloomOptions()

static BloomOptions* makeDefaultBloomOptions ( void  )

static

Definition at line 88 of file blutils.c.

References BloomOptions::bitSize, BloomOptions::bloomLength, DEFAULT_BLOOM_BITS, DEFAULT_BLOOM_LENGTH, i, INDEX_MAX_KEYS, palloc0(), SET_VARSIZE, and SIGNWORDBITS.

Referenced by BloomFillMetapage().

{
    BloomOptions *opts;
    int         i;

    opts = (BloomOptions *) palloc0(sizeof(BloomOptions));
    /* Convert DEFAULT_BLOOM_LENGTH from # of bits to # of words */
    opts->bloomLength = (DEFAULT_BLOOM_LENGTH + SIGNWORDBITS - 1) / SIGNWORDBITS;
    for (i = 0; i < INDEX_MAX_KEYS; i++)
        opts->bitSize[i] = DEFAULT_BLOOM_BITS;
    SET_VARSIZE(opts, sizeof(BloomOptions));
    return opts;
}

myRand()

static int32 myRand ( void  )

static

Definition at line 218 of file blutils.c.

References next.

Referenced by signValue().

{
    /*----------
     * Compute x = (7^5 * x) mod (2^31 - 1)
     * without overflowing 31 bits:
     *      (2^31 - 1) = 127773 * (7^5) + 2836
     * From "Random number generators: good ones are hard to find",
     * Park and Miller, Communications of the ACM, vol. 31, no. 10,
     * October 1988, p. 1195.
     *----------
     */
    int32       hi,
                lo,
                x;

    /* Must be in [1, 0x7ffffffe] range at this point. */
    hi = next / 127773;
    lo = next % 127773;
    x = 16807 * lo - 2836 * hi;
    if (x < 0)
        x += 0x7fffffff;
    next = x;
    /* Transform to [0, 0x7ffffffd] range. */
    return (x - 1);
}

mySrand()

static void mySrand ( uint32  seed )

static

Definition at line 245 of file blutils.c.

References next.

Referenced by signValue().

{
    next = seed;
    /* Transform to [1, 0x7ffffffe] range. */
    next = (next % 0x7ffffffe) + 1;
}

PG_FUNCTION_INFO_V1()

PG_FUNCTION_INFO_V1

(

blhandler

)

signValue()

void signValue	(	BloomState *	state,
		BloomSignatureWord *	sign,
		Datum	value,
		int	attno
	)

Definition at line 256 of file blutils.c.

References BloomOptions::bitSize, BloomOptions::bloomLength, BloomState::collations, DatumGetInt32, FunctionCall1Coll(), BloomState::hashFn, myRand(), mySrand(), BloomState::opts, SETBIT, and SIGNWORDBITS.

Referenced by blgetbitmap(), and BloomFormTuple().

{
    uint32      hashVal;
    int         nBit,
                j;

    /*
     * init generator with "column's" number to get "hashed" seed for new
     * value. We don't want to map the same numbers from different columns
     * into the same bits!
     */
    mySrand(attno);

    /*
     * Init hash sequence to map our value into bits. the same values in
     * different columns will be mapped into different bits because of step
     * above
     */
    hashVal = DatumGetInt32(FunctionCall1Coll(&state->hashFn[attno], state->collations[attno], value));
    mySrand(hashVal ^ myRand());

    for (j = 0; j < state->opts.bitSize[attno]; j++)
    {
        /* prevent multiple evaluation in SETBIT macro */
        nBit = myRand() % (state->opts.bloomLength * SIGNWORDBITS);
        SETBIT(sign, nBit);
    }
}

Variable Documentation

bl_relopt_kind

relopt_kind bl_relopt_kind

static

Definition at line 39 of file blutils.c.

Referenced by _PG_init(), and bloptions().

bl_relopt_tab

relopt_parse_elt bl_relopt_tab[INDEX_MAX_KEYS+1]

static

Definition at line 42 of file blutils.c.

next

int32 next

static

Definition at line 215 of file blutils.c.

Referenced by addItemsToLeaf(), AllocSetDelete(), AllocSetReset(), appendBoolResult(), AtEOSubXact_SPI(), AtSubAbort_Snapshot(), deallocate_one(), do_setval(), dsa_trim(), ecpg_register_prepared_stmt(), ECPGconnect(), ECPGdeallocate_desc(), ExecHashTableDetachBatch(), ExecParallelHashNextTuple(), executeKeyValueMethod(), executeNumericItemMethod(), extract_jsp_path_expr_nodes(), filemap_list_to_array(), find_struct(), find_struct_member(), find_variable(), flattenJsonPathParseItem(), get_best_segment(), get_source_line(), get_typedef(), getNextFlagFromString(), GinDataLeafPageGetItems(), heap_lock_updated_tuple_rec(), infer_arbiter_indexes(), IssuePendingWritebacks(), LagTrackerRead(), main(), make_new_segment(), merge_children(), myRand(), mySrand(), nextval_internal(), pg_event_trigger_dropped_objects(), PLySequence_ToArray(), prepare_common(), pushf_create(), ReorderBufferIterTXNNext(), replace_auto_config_value(), setCompoundAffixFlagValue(), setval3_oid(), setval_oid(), simple_oid_list_destroy(), simple_string_list_destroy(), SPI_freetuptable(), unicode_normalize_kc(), unlink_segment(), and unlink_span().