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646 lines
22 KiB
C
646 lines
22 KiB
C
/*-------------------------------------------------------------------------
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*
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* rel.h
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* POSTGRES relation descriptor (a/k/a relcache entry) definitions.
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*
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*
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* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/utils/rel.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef REL_H
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#define REL_H
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#include "access/tupdesc.h"
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#include "access/xlog.h"
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#include "catalog/pg_class.h"
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#include "catalog/pg_index.h"
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#include "catalog/pg_publication.h"
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#include "nodes/bitmapset.h"
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#include "partitioning/partdefs.h"
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#include "rewrite/prs2lock.h"
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#include "storage/block.h"
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#include "storage/relfilenode.h"
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#include "utils/relcache.h"
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#include "utils/reltrigger.h"
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/*
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* LockRelId and LockInfo really belong to lmgr.h, but it's more convenient
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* to declare them here so we can have a LockInfoData field in a Relation.
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*/
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typedef struct LockRelId
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{
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Oid relId; /* a relation identifier */
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Oid dbId; /* a database identifier */
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} LockRelId;
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typedef struct LockInfoData
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{
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LockRelId lockRelId;
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} LockInfoData;
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typedef LockInfoData *LockInfo;
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/*
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* Here are the contents of a relation cache entry.
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*/
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typedef struct RelationData
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{
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RelFileNode rd_node; /* relation physical identifier */
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/* use "struct" here to avoid needing to include smgr.h: */
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struct SMgrRelationData *rd_smgr; /* cached file handle, or NULL */
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int rd_refcnt; /* reference count */
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BackendId rd_backend; /* owning backend id, if temporary relation */
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bool rd_islocaltemp; /* rel is a temp rel of this session */
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bool rd_isnailed; /* rel is nailed in cache */
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bool rd_isvalid; /* relcache entry is valid */
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bool rd_indexvalid; /* is rd_indexlist valid? (also rd_pkindex and
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* rd_replidindex) */
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bool rd_statvalid; /* is rd_statlist valid? */
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bool rd_version_checked; /* has version check been done yet? */
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/*----------
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* rd_createSubid is the ID of the highest subtransaction the rel has
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* survived into or zero if the rel or its rd_node was created before the
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* current top transaction. (IndexStmt.oldNode leads to the case of a new
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* rel with an old rd_node.) rd_firstRelfilenodeSubid is the ID of the
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* highest subtransaction an rd_node change has survived into or zero if
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* rd_node matches the value it had at the start of the current top
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* transaction. (Rolling back the subtransaction that
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* rd_firstRelfilenodeSubid denotes would restore rd_node to the value it
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* had at the start of the current top transaction. Rolling back any
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* lower subtransaction would not.) Their accuracy is critical to
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* RelationNeedsWAL().
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*
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* rd_newRelfilenodeSubid is the ID of the highest subtransaction the
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* most-recent relfilenode change has survived into or zero if not changed
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* in the current transaction (or we have forgotten changing it). This
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* field is accurate when non-zero, but it can be zero when a relation has
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* multiple new relfilenodes within a single transaction, with one of them
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* occurring in a subsequently aborted subtransaction, e.g.
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* BEGIN;
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* TRUNCATE t;
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* SAVEPOINT save;
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* TRUNCATE t;
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* ROLLBACK TO save;
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* -- rd_newRelfilenodeSubid is now forgotten
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*
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* If every rd_*Subid field is zero, they are read-only outside
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* relcache.c. Files that trigger rd_node changes by updating
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* pg_class.reltablespace and/or pg_class.relfilenode call
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* RelationAssumeNewRelfilenode() to update rd_*Subid.
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*
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* rd_droppedSubid is the ID of the highest subtransaction that a drop of
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* the rel has survived into. In entries visible outside relcache.c, this
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* is always zero.
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*/
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SubTransactionId rd_createSubid; /* rel was created in current xact */
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SubTransactionId rd_newRelfilenodeSubid; /* highest subxact changing
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* rd_node to current value */
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SubTransactionId rd_firstRelfilenodeSubid; /* highest subxact changing
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* rd_node to any value */
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SubTransactionId rd_droppedSubid; /* dropped with another Subid set */
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Form_pg_class rd_rel; /* RELATION tuple */
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TupleDesc rd_att; /* tuple descriptor */
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Oid rd_id; /* relation's object id */
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LockInfoData rd_lockInfo; /* lock mgr's info for locking relation */
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RuleLock *rd_rules; /* rewrite rules */
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MemoryContext rd_rulescxt; /* private memory cxt for rd_rules, if any */
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TriggerDesc *trigdesc; /* Trigger info, or NULL if rel has none */
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/* use "struct" here to avoid needing to include rowsecurity.h: */
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struct RowSecurityDesc *rd_rsdesc; /* row security policies, or NULL */
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/* data managed by RelationGetFKeyList: */
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List *rd_fkeylist; /* list of ForeignKeyCacheInfo (see below) */
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bool rd_fkeyvalid; /* true if list has been computed */
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/* data managed by RelationGetPartitionKey: */
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PartitionKey rd_partkey; /* partition key, or NULL */
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MemoryContext rd_partkeycxt; /* private context for rd_partkey, if any */
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/* data managed by RelationGetPartitionDesc: */
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PartitionDesc rd_partdesc; /* partition descriptor, or NULL */
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MemoryContext rd_pdcxt; /* private context for rd_partdesc, if any */
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/* data managed by RelationGetPartitionQual: */
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List *rd_partcheck; /* partition CHECK quals */
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bool rd_partcheckvalid; /* true if list has been computed */
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MemoryContext rd_partcheckcxt; /* private cxt for rd_partcheck, if any */
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/* data managed by RelationGetIndexList: */
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List *rd_indexlist; /* list of OIDs of indexes on relation */
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Oid rd_pkindex; /* OID of primary key, if any */
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Oid rd_replidindex; /* OID of replica identity index, if any */
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/* data managed by RelationGetStatExtList: */
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List *rd_statlist; /* list of OIDs of extended stats */
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/* data managed by RelationGetIndexAttrBitmap: */
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Bitmapset *rd_indexattr; /* identifies columns used in indexes */
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Bitmapset *rd_keyattr; /* cols that can be ref'd by foreign keys */
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Bitmapset *rd_pkattr; /* cols included in primary key */
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Bitmapset *rd_idattr; /* included in replica identity index */
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PublicationActions *rd_pubactions; /* publication actions */
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/*
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* rd_options is set whenever rd_rel is loaded into the relcache entry.
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* Note that you can NOT look into rd_rel for this data. NULL means "use
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* defaults".
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*/
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bytea *rd_options; /* parsed pg_class.reloptions */
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/*
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* Oid of the handler for this relation. For an index this is a function
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* returning IndexAmRoutine, for table like relations a function returning
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* TableAmRoutine. This is stored separately from rd_indam, rd_tableam as
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* its lookup requires syscache access, but during relcache bootstrap we
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* need to be able to initialize rd_tableam without syscache lookups.
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*/
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Oid rd_amhandler; /* OID of index AM's handler function */
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/*
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* Table access method.
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*/
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const struct TableAmRoutine *rd_tableam;
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/* These are non-NULL only for an index relation: */
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Form_pg_index rd_index; /* pg_index tuple describing this index */
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/* use "struct" here to avoid needing to include htup.h: */
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struct HeapTupleData *rd_indextuple; /* all of pg_index tuple */
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/*
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* index access support info (used only for an index relation)
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*
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* Note: only default support procs for each opclass are cached, namely
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* those with lefttype and righttype equal to the opclass's opcintype. The
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* arrays are indexed by support function number, which is a sufficient
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* identifier given that restriction.
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*/
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MemoryContext rd_indexcxt; /* private memory cxt for this stuff */
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/* use "struct" here to avoid needing to include amapi.h: */
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struct IndexAmRoutine *rd_indam; /* index AM's API struct */
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Oid *rd_opfamily; /* OIDs of op families for each index col */
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Oid *rd_opcintype; /* OIDs of opclass declared input data types */
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RegProcedure *rd_support; /* OIDs of support procedures */
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struct FmgrInfo *rd_supportinfo; /* lookup info for support procedures */
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int16 *rd_indoption; /* per-column AM-specific flags */
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List *rd_indexprs; /* index expression trees, if any */
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List *rd_indpred; /* index predicate tree, if any */
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Oid *rd_exclops; /* OIDs of exclusion operators, if any */
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Oid *rd_exclprocs; /* OIDs of exclusion ops' procs, if any */
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uint16 *rd_exclstrats; /* exclusion ops' strategy numbers, if any */
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Oid *rd_indcollation; /* OIDs of index collations */
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bytea **rd_opcoptions; /* parsed opclass-specific options */
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/*
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* rd_amcache is available for index and table AMs to cache private data
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* about the relation. This must be just a cache since it may get reset
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* at any time (in particular, it will get reset by a relcache inval
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* message for the relation). If used, it must point to a single memory
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* chunk palloc'd in CacheMemoryContext, or in rd_indexcxt for an index
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* relation. A relcache reset will include freeing that chunk and setting
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* rd_amcache = NULL.
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*/
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void *rd_amcache; /* available for use by index/table AM */
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/*
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* foreign-table support
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*
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* rd_fdwroutine must point to a single memory chunk palloc'd in
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* CacheMemoryContext. It will be freed and reset to NULL on a relcache
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* reset.
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*/
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/* use "struct" here to avoid needing to include fdwapi.h: */
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struct FdwRoutine *rd_fdwroutine; /* cached function pointers, or NULL */
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/*
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* Hack for CLUSTER, rewriting ALTER TABLE, etc: when writing a new
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* version of a table, we need to make any toast pointers inserted into it
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* have the existing toast table's OID, not the OID of the transient toast
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* table. If rd_toastoid isn't InvalidOid, it is the OID to place in
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* toast pointers inserted into this rel. (Note it's set on the new
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* version of the main heap, not the toast table itself.) This also
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* causes toast_save_datum() to try to preserve toast value OIDs.
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*/
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Oid rd_toastoid; /* Real TOAST table's OID, or InvalidOid */
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/* use "struct" here to avoid needing to include pgstat.h: */
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struct PgStat_TableStatus *pgstat_info; /* statistics collection area */
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} RelationData;
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/*
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* ForeignKeyCacheInfo
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* Information the relcache can cache about foreign key constraints
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*
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* This is basically just an image of relevant columns from pg_constraint.
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* We make it a subclass of Node so that copyObject() can be used on a list
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* of these, but we also ensure it is a "flat" object without substructure,
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* so that list_free_deep() is sufficient to free such a list.
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* The per-FK-column arrays can be fixed-size because we allow at most
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* INDEX_MAX_KEYS columns in a foreign key constraint.
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*
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* Currently, we mostly cache fields of interest to the planner, but the set
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* of fields has already grown the constraint OID for other uses.
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*/
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typedef struct ForeignKeyCacheInfo
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{
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NodeTag type;
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Oid conoid; /* oid of the constraint itself */
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Oid conrelid; /* relation constrained by the foreign key */
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Oid confrelid; /* relation referenced by the foreign key */
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int nkeys; /* number of columns in the foreign key */
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/* these arrays each have nkeys valid entries: */
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AttrNumber conkey[INDEX_MAX_KEYS]; /* cols in referencing table */
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AttrNumber confkey[INDEX_MAX_KEYS]; /* cols in referenced table */
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Oid conpfeqop[INDEX_MAX_KEYS]; /* PK = FK operator OIDs */
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} ForeignKeyCacheInfo;
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/*
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* StdRdOptions
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* Standard contents of rd_options for heaps.
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*
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* RelationGetFillFactor() and RelationGetTargetPageFreeSpace() can only
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* be applied to relations that use this format or a superset for
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* private options data.
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*/
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/* autovacuum-related reloptions. */
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typedef struct AutoVacOpts
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{
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bool enabled;
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int vacuum_threshold;
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int vacuum_ins_threshold;
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int analyze_threshold;
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int vacuum_cost_limit;
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int freeze_min_age;
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int freeze_max_age;
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int freeze_table_age;
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int multixact_freeze_min_age;
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int multixact_freeze_max_age;
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int multixact_freeze_table_age;
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int log_min_duration;
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float8 vacuum_cost_delay;
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float8 vacuum_scale_factor;
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float8 vacuum_ins_scale_factor;
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float8 analyze_scale_factor;
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} AutoVacOpts;
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typedef struct StdRdOptions
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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int fillfactor; /* page fill factor in percent (0..100) */
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/* fraction of newly inserted tuples prior to trigger index cleanup */
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int toast_tuple_target; /* target for tuple toasting */
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AutoVacOpts autovacuum; /* autovacuum-related options */
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bool user_catalog_table; /* use as an additional catalog relation */
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int parallel_workers; /* max number of parallel workers */
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bool vacuum_index_cleanup; /* enables index vacuuming and cleanup */
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bool vacuum_truncate; /* enables vacuum to truncate a relation */
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} StdRdOptions;
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#define HEAP_MIN_FILLFACTOR 10
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#define HEAP_DEFAULT_FILLFACTOR 100
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/*
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* RelationGetToastTupleTarget
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* Returns the relation's toast_tuple_target. Note multiple eval of argument!
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*/
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#define RelationGetToastTupleTarget(relation, defaulttarg) \
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((relation)->rd_options ? \
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((StdRdOptions *) (relation)->rd_options)->toast_tuple_target : (defaulttarg))
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/*
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* RelationGetFillFactor
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* Returns the relation's fillfactor. Note multiple eval of argument!
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*/
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#define RelationGetFillFactor(relation, defaultff) \
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((relation)->rd_options ? \
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((StdRdOptions *) (relation)->rd_options)->fillfactor : (defaultff))
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/*
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* RelationGetTargetPageUsage
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* Returns the relation's desired space usage per page in bytes.
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*/
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#define RelationGetTargetPageUsage(relation, defaultff) \
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(BLCKSZ * RelationGetFillFactor(relation, defaultff) / 100)
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/*
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* RelationGetTargetPageFreeSpace
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* Returns the relation's desired freespace per page in bytes.
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*/
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#define RelationGetTargetPageFreeSpace(relation, defaultff) \
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(BLCKSZ * (100 - RelationGetFillFactor(relation, defaultff)) / 100)
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/*
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* RelationIsUsedAsCatalogTable
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* Returns whether the relation should be treated as a catalog table
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* from the pov of logical decoding. Note multiple eval of argument!
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*/
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#define RelationIsUsedAsCatalogTable(relation) \
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((relation)->rd_options && \
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((relation)->rd_rel->relkind == RELKIND_RELATION || \
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(relation)->rd_rel->relkind == RELKIND_MATVIEW) ? \
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((StdRdOptions *) (relation)->rd_options)->user_catalog_table : false)
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/*
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* RelationGetParallelWorkers
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* Returns the relation's parallel_workers reloption setting.
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* Note multiple eval of argument!
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*/
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#define RelationGetParallelWorkers(relation, defaultpw) \
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((relation)->rd_options ? \
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((StdRdOptions *) (relation)->rd_options)->parallel_workers : (defaultpw))
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/* ViewOptions->check_option values */
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typedef enum ViewOptCheckOption
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{
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VIEW_OPTION_CHECK_OPTION_NOT_SET,
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VIEW_OPTION_CHECK_OPTION_LOCAL,
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VIEW_OPTION_CHECK_OPTION_CASCADED
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} ViewOptCheckOption;
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/*
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* ViewOptions
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* Contents of rd_options for views
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*/
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typedef struct ViewOptions
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{
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int32 vl_len_; /* varlena header (do not touch directly!) */
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bool security_barrier;
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ViewOptCheckOption check_option;
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} ViewOptions;
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/*
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* RelationIsSecurityView
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* Returns whether the relation is security view, or not. Note multiple
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* eval of argument!
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*/
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#define RelationIsSecurityView(relation) \
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(AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
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(relation)->rd_options ? \
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((ViewOptions *) (relation)->rd_options)->security_barrier : false)
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/*
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* RelationHasCheckOption
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* Returns true if the relation is a view defined with either the local
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* or the cascaded check option. Note multiple eval of argument!
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*/
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#define RelationHasCheckOption(relation) \
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(AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
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(relation)->rd_options && \
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((ViewOptions *) (relation)->rd_options)->check_option != \
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VIEW_OPTION_CHECK_OPTION_NOT_SET)
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/*
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* RelationHasLocalCheckOption
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* Returns true if the relation is a view defined with the local check
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* option. Note multiple eval of argument!
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*/
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#define RelationHasLocalCheckOption(relation) \
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(AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
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(relation)->rd_options && \
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((ViewOptions *) (relation)->rd_options)->check_option == \
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VIEW_OPTION_CHECK_OPTION_LOCAL)
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/*
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* RelationHasCascadedCheckOption
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* Returns true if the relation is a view defined with the cascaded check
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* option. Note multiple eval of argument!
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*/
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#define RelationHasCascadedCheckOption(relation) \
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(AssertMacro(relation->rd_rel->relkind == RELKIND_VIEW), \
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(relation)->rd_options && \
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((ViewOptions *) (relation)->rd_options)->check_option == \
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VIEW_OPTION_CHECK_OPTION_CASCADED)
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/*
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* RelationIsValid
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* True iff relation descriptor is valid.
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*/
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#define RelationIsValid(relation) PointerIsValid(relation)
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#define InvalidRelation ((Relation) NULL)
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/*
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* RelationHasReferenceCountZero
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* True iff relation reference count is zero.
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*
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* Note:
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* Assumes relation descriptor is valid.
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*/
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#define RelationHasReferenceCountZero(relation) \
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((bool)((relation)->rd_refcnt == 0))
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/*
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* RelationGetForm
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* Returns pg_class tuple for a relation.
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*
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* Note:
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* Assumes relation descriptor is valid.
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*/
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#define RelationGetForm(relation) ((relation)->rd_rel)
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/*
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* RelationGetRelid
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* Returns the OID of the relation
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*/
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#define RelationGetRelid(relation) ((relation)->rd_id)
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/*
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* RelationGetNumberOfAttributes
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* Returns the total number of attributes in a relation.
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*/
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#define RelationGetNumberOfAttributes(relation) ((relation)->rd_rel->relnatts)
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/*
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* IndexRelationGetNumberOfAttributes
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* Returns the number of attributes in an index.
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*/
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#define IndexRelationGetNumberOfAttributes(relation) \
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((relation)->rd_index->indnatts)
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/*
|
|
* IndexRelationGetNumberOfKeyAttributes
|
|
* Returns the number of key attributes in an index.
|
|
*/
|
|
#define IndexRelationGetNumberOfKeyAttributes(relation) \
|
|
((relation)->rd_index->indnkeyatts)
|
|
|
|
/*
|
|
* RelationGetDescr
|
|
* Returns tuple descriptor for a relation.
|
|
*/
|
|
#define RelationGetDescr(relation) ((relation)->rd_att)
|
|
|
|
/*
|
|
* RelationGetRelationName
|
|
* Returns the rel's name.
|
|
*
|
|
* Note that the name is only unique within the containing namespace.
|
|
*/
|
|
#define RelationGetRelationName(relation) \
|
|
(NameStr((relation)->rd_rel->relname))
|
|
|
|
/*
|
|
* RelationGetNamespace
|
|
* Returns the rel's namespace OID.
|
|
*/
|
|
#define RelationGetNamespace(relation) \
|
|
((relation)->rd_rel->relnamespace)
|
|
|
|
/*
|
|
* RelationIsMapped
|
|
* True if the relation uses the relfilenode map. Note multiple eval
|
|
* of argument!
|
|
*/
|
|
#define RelationIsMapped(relation) \
|
|
(RELKIND_HAS_STORAGE((relation)->rd_rel->relkind) && \
|
|
((relation)->rd_rel->relfilenode == InvalidOid))
|
|
|
|
/*
|
|
* RelationOpenSmgr
|
|
* Open the relation at the smgr level, if not already done.
|
|
*/
|
|
#define RelationOpenSmgr(relation) \
|
|
do { \
|
|
if ((relation)->rd_smgr == NULL) \
|
|
smgrsetowner(&((relation)->rd_smgr), smgropen((relation)->rd_node, (relation)->rd_backend)); \
|
|
} while (0)
|
|
|
|
/*
|
|
* RelationCloseSmgr
|
|
* Close the relation at the smgr level, if not already done.
|
|
*
|
|
* Note: smgrclose should unhook from owner pointer, hence the Assert.
|
|
*/
|
|
#define RelationCloseSmgr(relation) \
|
|
do { \
|
|
if ((relation)->rd_smgr != NULL) \
|
|
{ \
|
|
smgrclose((relation)->rd_smgr); \
|
|
Assert((relation)->rd_smgr == NULL); \
|
|
} \
|
|
} while (0)
|
|
|
|
/*
|
|
* RelationGetTargetBlock
|
|
* Fetch relation's current insertion target block.
|
|
*
|
|
* Returns InvalidBlockNumber if there is no current target block. Note
|
|
* that the target block status is discarded on any smgr-level invalidation.
|
|
*/
|
|
#define RelationGetTargetBlock(relation) \
|
|
( (relation)->rd_smgr != NULL ? (relation)->rd_smgr->smgr_targblock : InvalidBlockNumber )
|
|
|
|
/*
|
|
* RelationSetTargetBlock
|
|
* Set relation's current insertion target block.
|
|
*/
|
|
#define RelationSetTargetBlock(relation, targblock) \
|
|
do { \
|
|
RelationOpenSmgr(relation); \
|
|
(relation)->rd_smgr->smgr_targblock = (targblock); \
|
|
} while (0)
|
|
|
|
/*
|
|
* RelationNeedsWAL
|
|
* True if relation needs WAL.
|
|
*
|
|
* Returns false if wal_level = minimal and this relation is created or
|
|
* truncated in the current transaction. See "Skipping WAL for New
|
|
* RelFileNode" in src/backend/access/transam/README.
|
|
*/
|
|
#define RelationNeedsWAL(relation) \
|
|
((relation)->rd_rel->relpersistence == RELPERSISTENCE_PERMANENT && \
|
|
(XLogIsNeeded() || \
|
|
(relation->rd_createSubid == InvalidSubTransactionId && \
|
|
relation->rd_firstRelfilenodeSubid == InvalidSubTransactionId)))
|
|
|
|
/*
|
|
* RelationUsesLocalBuffers
|
|
* True if relation's pages are stored in local buffers.
|
|
*/
|
|
#define RelationUsesLocalBuffers(relation) \
|
|
((relation)->rd_rel->relpersistence == RELPERSISTENCE_TEMP)
|
|
|
|
/*
|
|
* RELATION_IS_LOCAL
|
|
* If a rel is either temp or newly created in the current transaction,
|
|
* it can be assumed to be accessible only to the current backend.
|
|
* This is typically used to decide that we can skip acquiring locks.
|
|
*
|
|
* Beware of multiple eval of argument
|
|
*/
|
|
#define RELATION_IS_LOCAL(relation) \
|
|
((relation)->rd_islocaltemp || \
|
|
(relation)->rd_createSubid != InvalidSubTransactionId)
|
|
|
|
/*
|
|
* RELATION_IS_OTHER_TEMP
|
|
* Test for a temporary relation that belongs to some other session.
|
|
*
|
|
* Beware of multiple eval of argument
|
|
*/
|
|
#define RELATION_IS_OTHER_TEMP(relation) \
|
|
((relation)->rd_rel->relpersistence == RELPERSISTENCE_TEMP && \
|
|
!(relation)->rd_islocaltemp)
|
|
|
|
|
|
/*
|
|
* RelationIsScannable
|
|
* Currently can only be false for a materialized view which has not been
|
|
* populated by its query. This is likely to get more complicated later,
|
|
* so use a macro which looks like a function.
|
|
*/
|
|
#define RelationIsScannable(relation) ((relation)->rd_rel->relispopulated)
|
|
|
|
/*
|
|
* RelationIsPopulated
|
|
* Currently, we don't physically distinguish the "populated" and
|
|
* "scannable" properties of matviews, but that may change later.
|
|
* Hence, use the appropriate one of these macros in code tests.
|
|
*/
|
|
#define RelationIsPopulated(relation) ((relation)->rd_rel->relispopulated)
|
|
|
|
/*
|
|
* RelationIsAccessibleInLogicalDecoding
|
|
* True if we need to log enough information to have access via
|
|
* decoding snapshot.
|
|
*/
|
|
#define RelationIsAccessibleInLogicalDecoding(relation) \
|
|
(XLogLogicalInfoActive() && \
|
|
RelationNeedsWAL(relation) && \
|
|
(IsCatalogRelation(relation) || RelationIsUsedAsCatalogTable(relation)))
|
|
|
|
/*
|
|
* RelationIsLogicallyLogged
|
|
* True if we need to log enough information to extract the data from the
|
|
* WAL stream.
|
|
*
|
|
* We don't log information for unlogged tables (since they don't WAL log
|
|
* anyway) and for system tables (their content is hard to make sense of, and
|
|
* it would complicate decoding slightly for little gain). Note that we *do*
|
|
* log information for user defined catalog tables since they presumably are
|
|
* interesting to the user...
|
|
*/
|
|
#define RelationIsLogicallyLogged(relation) \
|
|
(XLogLogicalInfoActive() && \
|
|
RelationNeedsWAL(relation) && \
|
|
!IsCatalogRelation(relation))
|
|
|
|
/* routines in utils/cache/relcache.c */
|
|
extern void RelationIncrementReferenceCount(Relation rel);
|
|
extern void RelationDecrementReferenceCount(Relation rel);
|
|
|
|
#endif /* REL_H */
|