#include "storage/block.h"
#include "storage/off.h"

Include dependency graph for itemptr.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	ItemPointerData
Defines
#define	SizeOfIptrData (offsetof(ItemPointerData, ip_posid) + sizeof(OffsetNumber))
#define	ItemPointerIsValid(pointer) ((bool) (PointerIsValid(pointer) && ((pointer)->ip_posid != 0)))
#define	ItemPointerGetBlockNumber(pointer)
#define	ItemPointerGetOffsetNumber(pointer)
#define	ItemPointerSet(pointer, blockNumber, offNum)
#define	ItemPointerSetBlockNumber(pointer, blockNumber)
#define	ItemPointerSetOffsetNumber(pointer, offsetNumber)
#define	ItemPointerCopy(fromPointer, toPointer)
#define	ItemPointerSetInvalid(pointer)
Typedefs
typedef struct ItemPointerData	ItemPointerData
typedef ItemPointerData *	ItemPointer
Functions
bool	ItemPointerEquals (ItemPointer pointer1, ItemPointer pointer2)
int32	ItemPointerCompare (ItemPointer arg1, ItemPointer arg2)

Define Documentation

#define ItemPointerCopy	(	fromPointer,
		toPointer
	)

Value:

( \
    AssertMacro(PointerIsValid(toPointer)), \
    AssertMacro(PointerIsValid(fromPointer)), \
    *(toPointer) = *(fromPointer) \
)

Definition at line 120 of file itemptr.h.

Referenced by AfterTriggerExecute(), AfterTriggerSaveEvent(), currtid_byrelname(), currtid_byreloid(), heap_lock_tuple(), and heap_lock_updated_tuple_rec().

#define ItemPointerGetBlockNumber ( pointer )

Value:

( \
    AssertMacro(ItemPointerIsValid(pointer)), \
    BlockIdGetBlockNumber(&(pointer)->ip_blkid) \
)

Definition at line 69 of file itemptr.h.

Referenced by _bt_get_endpoint(), _bt_insertonpg(), _bt_pagedel(), _bt_search(), btree_xlog_delete_get_latestRemovedXid(), btree_xlog_delete_page(), btree_xlog_insert(), btree_xlog_newroot(), CheckForSerializableConflictIn(), compare_rows(), comparetup_index_btree(), comparetup_index_hash(), ConditionalLockTuple(), doPickSplit(), GetTupleForTrigger(), gingetbitmap(), gistBufferingFindCorrectParent(), gistbufferinginserttuples(), gistbulkdelete(), gistdoinsert(), gistFindCorrectParent(), gistFindPath(), gistGetMaxLevel(), gistMemorizeAllDownlinks(), gistProcessItup(), gistScanPage(), heap_delete(), heap_desc(), heap_fetch(), heap_get_latest_tid(), heap_hot_search(), heap_hot_search_buffer(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_prune_chain(), heap_update(), heap_xlog_delete(), heap_xlog_inplace(), heap_xlog_insert(), heap_xlog_lock(), heap_xlog_lock_updated(), heap_xlog_update(), heapgettup(), heapgettup_pagemode(), index_fetch_heap(), index_getnext(), IndexOnlyNext(), ItemPointerEquals(), itemptr_comparator(), lazy_vacuum_heap(), lazy_vacuum_page(), LockTuple(), out_target(), PredicateLockTuple(), PrintCatCacheLeakWarning(), setRedirectionTuple(), spgMatchNodeAction(), spgprocesspending(), spgWalk(), tbm_add_tuples(), TidListCreate(), UnlockTuple(), vac_cmp_itemptr(), and validate_index_heapscan().

#define ItemPointerGetOffsetNumber ( pointer )

Value:

( \
    AssertMacro(ItemPointerIsValid(pointer)), \
    (pointer)->ip_posid \
)

Definition at line 79 of file itemptr.h.

Referenced by _bt_insertonpg(), _hash_first(), _hash_next(), _hash_step(), bitgetpage(), btree_xlog_delete_get_latestRemovedXid(), btree_xlog_delete_page(), btree_xlog_insert(), btree_xlog_newroot(), CheckForSerializableConflictIn(), compare_rows(), comparetup_index_btree(), comparetup_index_hash(), ConditionalLockTuple(), doPickSplit(), fill_seq_with_data(), GetTupleForTrigger(), hashgetbitmap(), hashgettuple(), heap_delete(), heap_desc(), heap_fetch(), heap_get_latest_tid(), heap_get_root_tuples(), heap_hot_search_buffer(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_multi_insert(), heap_prune_chain(), heap_update(), heap_xlog_delete(), heap_xlog_inplace(), heap_xlog_insert(), heap_xlog_lock(), heap_xlog_lock_updated(), heap_xlog_update(), heapgettup(), heapgettup_pagemode(), IndexBuildHeapScan(), ItemPointerEquals(), itemptr_comparator(), lazy_vacuum_page(), LockTuple(), log_heap_update(), out_target(), PredicateLockTuple(), PrintCatCacheLeakWarning(), spgMatchNodeAction(), spgprocesspending(), spgWalk(), tbm_add_tuples(), UnlockTuple(), vac_cmp_itemptr(), and validate_index_heapscan().

#define ItemPointerIsValid ( pointer ) ((bool) (PointerIsValid(pointer) && ((pointer)->ip_posid != 0)))

#define ItemPointerSet	(	pointer,
		blockNumber,
		offNum
	)

Value:

( \
    AssertMacro(PointerIsValid(pointer)), \
    BlockIdSet(&((pointer)->ip_blkid), blockNumber), \
    (pointer)->ip_posid = offNum \
)

Definition at line 89 of file itemptr.h.

Referenced by _bt_buildadd(), _bt_insert_parent(), _bt_insertonpg(), _bt_newroot(), _bt_pagedel(), _bt_parent_deletion_safe(), _bt_uppershutdown(), _hash_step(), acquire_sample_rows(), bitgetpage(), BitmapHeapNext(), btree_xlog_delete_page(), doPickSplit(), entryGetItem(), heap_page_is_all_visible(), heapgetpage(), heapgettup(), heapgettup_pagemode(), lazy_scan_heap(), raw_heap_insert(), RelationPutHeapTuple(), resetSpGistScanOpaque(), setRedirectionTuple(), spgFormDeadTuple(), spgUpdateNodeLink(), tidin(), and tidrecv().

#define ItemPointerSetBlockNumber	(	pointer,
		blockNumber
	)

Value:

( \
    AssertMacro(PointerIsValid(pointer)), \
    BlockIdSet(&((pointer)->ip_blkid), blockNumber) \
)

Definition at line 100 of file itemptr.h.

Referenced by gistformdownlink(), gistplacetopage(), and heap_xlog_multi_insert().

#define ItemPointerSetInvalid ( pointer )

Value:

( \
    AssertMacro(PointerIsValid(pointer)), \
    BlockIdSet(&((pointer)->ip_blkid), InvalidBlockNumber), \
    (pointer)->ip_posid = InvalidOffsetNumber \
)

Definition at line 131 of file itemptr.h.

Referenced by _hash_first(), _hash_step(), AfterTriggerSaveEvent(), end_heap_rewrite(), entryGetItem(), entryGetNextItem(), EvalPlanQualFetchRowMarks(), exec_move_row_from_datum(), ExecDelete(), ExecEvalFieldStore(), ExecLockRows(), ExecUpdate(), get_tuple_from_datum(), GetAttributeByName(), GetAttributeByNum(), hashbeginscan(), hashrescan(), heap_form_tuple(), heap_markpos(), heap_tuple_from_minimal_tuple(), hstore_from_record(), hstore_populate_record(), InitPlan(), initscan(), json_populate_record(), PLy_typeinfo_init(), populate_recordset_object_end(), processPendingPage(), record_cmp(), record_eq(), record_out(), record_send(), RelationGetIndexScan(), rewrite_heap_tuple(), scanGetCandidate(), spgFormDeadTuple(), spgFormNodeTuple(), spgRedoVacuumRedirect(), toast_flatten_tuple_attribute(), and vacuumRedirectAndPlaceholder().

#define ItemPointerSetOffsetNumber	(	pointer,
		offsetNumber
	)

Value:

( \
    AssertMacro(PointerIsValid(pointer)), \
    (pointer)->ip_posid = (offsetNumber) \
)

Definition at line 110 of file itemptr.h.

Referenced by gistFormTuple(), hashgettuple(), heap_hot_search_buffer(), heap_xlog_multi_insert(), IndexBuildHeapScan(), and validate_index_heapscan().

#define SizeOfIptrData (offsetof(ItemPointerData, ip_posid) + sizeof(OffsetNumber))

Definition at line 48 of file itemptr.h.

Referenced by gincostestimate(), and TidListCreate().

Typedef Documentation

typedef ItemPointerData* ItemPointer

Definition at line 51 of file itemptr.h.

typedef struct ItemPointerData ItemPointerData

Function Documentation

int32 ItemPointerCompare	(	ItemPointer	arg1,
		ItemPointer	arg2
	)

Definition at line 45 of file itemptr.c.

References BlockIdGetBlockNumber, ItemPointerData::ip_blkid, and ItemPointerData::ip_posid.

Referenced by _bt_check_unique(), bttidcmp(), tideq(), tidge(), tidgt(), tidlarger(), tidle(), tidlt(), tidne(), tidsmaller(), and validate_index_heapscan().

{
    /*
     * Don't use ItemPointerGetBlockNumber or ItemPointerGetOffsetNumber here,
     * because they assert ip_posid != 0 which might not be true for a
     * user-supplied TID.
     */
    BlockNumber b1 = BlockIdGetBlockNumber(&(arg1->ip_blkid));
    BlockNumber b2 = BlockIdGetBlockNumber(&(arg2->ip_blkid));

    if (b1 < b2)
        return -1;
    else if (b1 > b2)
        return 1;
    else if (arg1->ip_posid < arg2->ip_posid)
        return -1;
    else if (arg1->ip_posid > arg2->ip_posid)
        return 1;
    else
        return 0;
}

bool ItemPointerEquals	(	ItemPointer	pointer1,
		ItemPointer	pointer2
	)

Definition at line 29 of file itemptr.c.

References ItemPointerGetBlockNumber, and ItemPointerGetOffsetNumber.

Referenced by _bt_killitems(), check_exclusion_constraint(), collectMatchesForHeapRow(), compile_pltcl_function(), EvalPlanQualFetch(), ExecDelete(), ExecLockRows(), ExecUpdate(), GetTupleForTrigger(), gistplacetopage(), hashgettuple(), heap_get_latest_tid(), heap_lock_updated_tuple(), heap_lock_updated_tuple_rec(), lookup_C_func(), plpgsql_compile(), PLy_procedure_argument_valid(), PLy_procedure_valid(), processPendingPage(), rewrite_heap_tuple(), scanGetCandidate(), SearchCatCacheList(), spgAddPendingTID(), TidListCreate(), and validate_plperl_function().

{
    if (ItemPointerGetBlockNumber(pointer1) ==
        ItemPointerGetBlockNumber(pointer2) &&
        ItemPointerGetOffsetNumber(pointer1) ==
        ItemPointerGetOffsetNumber(pointer2))
        return true;
    else
        return false;
}

Header And Logo

itemptr.h File Reference

Data Structures

Defines

Typedefs

Functions

Define Documentation

Typedef Documentation

Function Documentation