itemid.h File Reference

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Data Structures
struct	ItemIdData

Macros
#define	LP_UNUSED   0 /* unused (should always have lp_len=0) */
#define	LP_NORMAL   1 /* used (should always have lp_len>0) */
#define	LP_REDIRECT   2 /* HOT redirect (should have lp_len=0) */
#define	LP_DEAD   3 /* dead, may or may not have storage */
#define	ItemIdGetLength(itemId)   ((itemId)->lp_len)
#define	ItemIdGetOffset(itemId)   ((itemId)->lp_off)
#define	ItemIdGetFlags(itemId)   ((itemId)->lp_flags)
#define	ItemIdGetRedirect(itemId)   ((itemId)->lp_off)
#define	ItemIdIsValid(itemId)   PointerIsValid(itemId)
#define	ItemIdIsUsed(itemId)   ((itemId)->lp_flags != LP_UNUSED)
#define	ItemIdIsNormal(itemId)   ((itemId)->lp_flags == LP_NORMAL)
#define	ItemIdIsRedirected(itemId)   ((itemId)->lp_flags == LP_REDIRECT)
#define	ItemIdIsDead(itemId)   ((itemId)->lp_flags == LP_DEAD)
#define	ItemIdHasStorage(itemId)   ((itemId)->lp_len != 0)
#define	ItemIdSetUnused(itemId)
#define	ItemIdSetNormal(itemId, off, len)
#define	ItemIdSetRedirect(itemId, link)
#define	ItemIdSetDead(itemId)
#define	ItemIdMarkDead(itemId)

Typedefs
typedef struct ItemIdData	ItemIdData
typedef ItemIdData *	ItemId
typedef uint16	ItemOffset
typedef uint16	ItemLength

Macro Definition Documentation

ItemIdGetFlags

#define ItemIdGetFlags

(

itemId

)

((itemId)->lp_flags)

Definition at line 71 of file itemid.h.

Referenced by heap_page_items(), and PageGetItemIdCareful().

ItemIdGetLength

#define ItemIdGetLength

(

itemId

)

((itemId)->lp_len)

Definition at line 59 of file itemid.h.

Referenced by _bt_buildadd(), _bt_findsplitloc(), _bt_newroot(), _bt_split(), _bt_split_penalty(), brin_doupdate(), brin_evacuate_page(), brinGetTupleForHeapBlock(), brininsert(), bt_target_page_check(), btree_xlog_split(), collect_corrupt_items(), heap_abort_speculative(), heap_delete(), heap_fetch(), heap_get_latest_tid(), heap_hot_search_buffer(), heap_inplace_update(), heap_lock_tuple(), heap_mask(), heap_page_is_all_visible(), heap_page_items(), heap_prune_chain(), heap_update(), heap_xlog_inplace(), heap_xlog_update(), heapam_scan_analyze_next_tuple(), heapam_scan_bitmap_next_block(), heapam_scan_bitmap_next_tuple(), heapam_scan_sample_next_tuple(), heapgetpage(), heapgettup(), heapgettup_pagemode(), lazy_scan_heap(), PageGetItemIdCareful(), PageIndexMultiDelete(), PageIndexTupleDelete(), PageIndexTupleDeleteNoCompact(), PageIndexTupleOverwrite(), PageRepairFragmentation(), pgstat_index_page(), read_seq_tuple(), and statapprox_heap().

ItemIdGetOffset

#define ItemIdGetOffset

(

itemId

)

((itemId)->lp_off)

Definition at line 65 of file itemid.h.

Referenced by heap_mask(), heap_page_items(), PageGetItemIdCareful(), PageIndexMultiDelete(), PageIndexTupleDelete(), PageIndexTupleDeleteNoCompact(), PageIndexTupleOverwrite(), and PageRepairFragmentation().

ItemIdGetRedirect

#define ItemIdGetRedirect

(

itemId

)

((itemId)->lp_off)

Definition at line 78 of file itemid.h.

Referenced by heap_compute_xid_horizon_for_tuples(), heap_get_root_tuples(), heap_hot_search_buffer(), and heap_prune_chain().

ItemIdHasStorage

#define ItemIdHasStorage

(

itemId

)

((itemId)->lp_len != 0)

Definition at line 120 of file itemid.h.

Referenced by heap_compute_xid_horizon_for_tuples(), heap_mask(), heap_page_items(), PageAddItemExtended(), PageIndexMultiDelete(), PageIndexTupleDelete(), PageIndexTupleDeleteNoCompact(), PageIndexTupleOverwrite(), and PageRepairFragmentation().

ItemIdIsDead

#define ItemIdIsDead

(

itemId

)

((itemId)->lp_flags == LP_DEAD)

Definition at line 113 of file itemid.h.

Referenced by _bt_check_unique(), _bt_readpage(), _bt_vacuum_one_page(), _hash_load_qualified_items(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), bt_target_page_check(), collect_corrupt_items(), GetBTPageStatistics(), GetHashPageStatistics(), GetHashPageStats(), gistprunepage(), gistScanPage(), heap_compute_xid_horizon_for_tuples(), heap_get_root_tuples(), heap_page_is_all_visible(), heap_page_prune(), heap_prune_chain(), heapam_scan_analyze_next_tuple(), lazy_scan_heap(), pgstat_index_page(), and statapprox_heap().

ItemIdIsNormal

#define ItemIdIsNormal

(

itemId

)

((itemId)->lp_flags == LP_NORMAL)

Definition at line 99 of file itemid.h.

Referenced by brin_doupdate(), heap_abort_speculative(), heap_delete(), heap_fetch(), heap_finish_speculative(), heap_get_latest_tid(), heap_get_root_tuples(), heap_hot_search_buffer(), heap_inplace_update(), heap_lock_tuple(), heap_mask(), heap_page_is_all_visible(), heap_prune_chain(), heap_update(), heap_xlog_confirm(), heap_xlog_delete(), heap_xlog_inplace(), heap_xlog_lock(), heap_xlog_lock_updated(), heap_xlog_update(), heapam_scan_analyze_next_tuple(), heapam_scan_bitmap_next_block(), heapam_scan_bitmap_next_tuple(), heapam_scan_sample_next_tuple(), heapgetpage(), heapgettup(), heapgettup_pagemode(), lazy_check_needs_freeze(), lazy_scan_heap(), read_seq_tuple(), and statapprox_heap().

ItemIdIsRedirected

#define ItemIdIsRedirected

(

itemId

)

((itemId)->lp_flags == LP_REDIRECT)

Definition at line 106 of file itemid.h.

Referenced by collect_corrupt_items(), heap_compute_xid_horizon_for_tuples(), heap_get_root_tuples(), heap_hot_search_buffer(), heap_page_is_all_visible(), heap_prune_chain(), lazy_scan_heap(), PageGetItemIdCareful(), and statapprox_heap().

ItemIdIsUsed

#define ItemIdIsUsed

(

itemId

)

((itemId)->lp_flags != LP_UNUSED)

Definition at line 92 of file itemid.h.

Referenced by brin_evacuate_page(), brin_page_items(), brin_start_evacuating_page(), brinGetTupleForHeapBlock(), brinRevmapDesummarizeRange(), collect_corrupt_items(), count_nondeletable_pages(), heap_compute_xid_horizon_for_tuples(), heap_get_root_tuples(), heap_page_is_all_visible(), heap_page_prune(), heap_prune_chain(), lazy_check_needs_freeze(), lazy_scan_heap(), mask_lp_flags(), PageAddItemExtended(), PageGetHeapFreeSpace(), PageGetItemIdCareful(), PageRepairFragmentation(), and statapprox_heap().

ItemIdIsValid

#define ItemIdIsValid

(

itemId

)

PointerIsValid(itemId)

Definition at line 86 of file itemid.h.

Referenced by bt_page_print_tuples(), and hash_page_items().

ItemIdMarkDead

#define ItemIdMarkDead

(

itemId

)

Value:

( \
    (itemId)->lp_flags = LP_DEAD \
)

Definition at line 179 of file itemid.h.

Referenced by _bt_check_unique(), _bt_killitems(), _hash_kill_items(), and gistkillitems().

ItemIdSetDead

#define ItemIdSetDead

(

itemId

)

Value:

( \
    (itemId)->lp_flags = LP_DEAD, \
    (itemId)->lp_off = 0, \
    (itemId)->lp_len = 0 \
)

Definition at line 164 of file itemid.h.

Referenced by heap_page_prune_execute().

ItemIdSetNormal

#define ItemIdSetNormal	(		itemId,
			off,
			len
	)

Value:

( \
    (itemId)->lp_flags = LP_NORMAL, \
    (itemId)->lp_off = (off), \
    (itemId)->lp_len = (len) \
)

Definition at line 140 of file itemid.h.

Referenced by PageAddItemExtended(), and PageIndexTupleOverwrite().

ItemIdSetRedirect

#define ItemIdSetRedirect	(		itemId,
			link
	)

Value:

( \
    (itemId)->lp_flags = LP_REDIRECT, \
    (itemId)->lp_off = (link), \
    (itemId)->lp_len = 0 \
)

Definition at line 152 of file itemid.h.

Referenced by heap_page_prune_execute().

ItemIdSetUnused

#define ItemIdSetUnused

(

itemId

)

Value:

( \
    (itemId)->lp_flags = LP_UNUSED, \
    (itemId)->lp_off = 0, \
    (itemId)->lp_len = 0 \
)

Definition at line 128 of file itemid.h.

Referenced by _bt_buildadd(), heap_page_prune_execute(), lazy_vacuum_page(), PageIndexTupleDeleteNoCompact(), and PageRepairFragmentation().

LP_DEAD

#define LP_DEAD   3 /* dead, may or may not have storage */

Definition at line 41 of file itemid.h.

LP_NORMAL

#define LP_NORMAL   1 /* used (should always have lp_len>0) */

Definition at line 39 of file itemid.h.

LP_REDIRECT

#define LP_REDIRECT   2 /* HOT redirect (should have lp_len=0) */

Definition at line 40 of file itemid.h.

LP_UNUSED

#define LP_UNUSED   0 /* unused (should always have lp_len=0) */

Definition at line 38 of file itemid.h.

Referenced by mask_lp_flags().

Typedef Documentation

ItemId

typedef ItemIdData* ItemId

Definition at line 32 of file itemid.h.

ItemIdData

typedef struct ItemIdData ItemIdData

ItemLength

typedef uint16 ItemLength

Definition at line 48 of file itemid.h.

ItemOffset

typedef uint16 ItemOffset

Definition at line 47 of file itemid.h.