Support unlogged tables.

The contents of an unlogged table are WAL-logged; thus, they are not
available on standby servers and are truncated whenever the database
system enters recovery.  Indexes on unlogged tables are also unlogged.
Unlogged GiST indexes are not currently supported.

4 files changed, 9 insertions, 3 deletions

diff --git a/src/include/access/gin.h b/src/include/access/gin.h
index e2d7b450c2a..b1eef920546 100644
--- a/src/include/access/gin.h
+++ b/src/include/access/gin.h
@@ -389,6 +389,7 @@ extern void ginUpdateStats(Relation index, const GinStatsData *stats);
 
 /* gininsert.c */
 extern Datum ginbuild(PG_FUNCTION_ARGS);
+extern Datum ginbuildempty(PG_FUNCTION_ARGS);
 extern Datum gininsert(PG_FUNCTION_ARGS);
 extern void ginEntryInsert(Relation index, GinState *ginstate,
 			   OffsetNumber attnum, Datum value,
diff --git a/src/include/access/gist_private.h b/src/include/access/gist_private.h
index 1bacb468ee6..77d679d4899 100644
--- a/src/include/access/gist_private.h
+++ b/src/include/access/gist_private.h
@@ -281,6 +281,7 @@ typedef struct
 
 /* gist.c */
 extern Datum gistbuild(PG_FUNCTION_ARGS);
+extern Datum gistbuildempty(PG_FUNCTION_ARGS);
 extern Datum gistinsert(PG_FUNCTION_ARGS);
 extern MemoryContext createTempGistContext(void);
 extern void initGISTstate(GISTSTATE *giststate, Relation index);
diff --git a/src/include/access/hash.h b/src/include/access/hash.h
index d5899f4d57d..a48320bbeed 100644
--- a/src/include/access/hash.h
+++ b/src/include/access/hash.h
@@ -242,6 +242,7 @@ typedef HashMetaPageData *HashMetaPage;
 /* public routines */
 
 extern Datum hashbuild(PG_FUNCTION_ARGS);
+extern Datum hashbuildempty(PG_FUNCTION_ARGS);
 extern Datum hashinsert(PG_FUNCTION_ARGS);
 extern Datum hashbeginscan(PG_FUNCTION_ARGS);
 extern Datum hashgettuple(PG_FUNCTION_ARGS);
@@ -291,7 +292,7 @@ extern Buffer _hash_addovflpage(Relation rel, Buffer metabuf, Buffer buf);
 extern BlockNumber _hash_freeovflpage(Relation rel, Buffer ovflbuf,
 				   BufferAccessStrategy bstrategy);
 extern void _hash_initbitmap(Relation rel, HashMetaPage metap,
-				 BlockNumber blkno);
+				 BlockNumber blkno, ForkNumber forkNum);
 extern void _hash_squeezebucket(Relation rel,
 					Bucket bucket, BlockNumber bucket_blkno,
 					BufferAccessStrategy bstrategy);
@@ -303,7 +304,8 @@ extern void _hash_droplock(Relation rel, BlockNumber whichlock, int access);
 extern Buffer _hash_getbuf(Relation rel, BlockNumber blkno,
 			 int access, int flags);
 extern Buffer _hash_getinitbuf(Relation rel, BlockNumber blkno);
-extern Buffer _hash_getnewbuf(Relation rel, BlockNumber blkno);
+extern Buffer _hash_getnewbuf(Relation rel, BlockNumber blkno,
+				ForkNumber forkNum);
 extern Buffer _hash_getbuf_with_strategy(Relation rel, BlockNumber blkno,
 						   int access, int flags,
 						   BufferAccessStrategy bstrategy);
@@ -312,7 +314,8 @@ extern void _hash_dropbuf(Relation rel, Buffer buf);
 extern void _hash_wrtbuf(Relation rel, Buffer buf);
 extern void _hash_chgbufaccess(Relation rel, Buffer buf, int from_access,
 				   int to_access);
-extern uint32 _hash_metapinit(Relation rel, double num_tuples);
+extern uint32 _hash_metapinit(Relation rel, double num_tuples,
+				ForkNumber forkNum);
 extern void _hash_pageinit(Page page, Size size);
 extern void _hash_expandtable(Relation rel, Buffer metabuf);
 
diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h
index 3bbc4d1cda4..283612eaed8 100644
--- a/src/include/access/nbtree.h
+++ b/src/include/access/nbtree.h
@@ -555,6 +555,7 @@ typedef BTScanOpaqueData *BTScanOpaque;
  * prototypes for functions in nbtree.c (external entry points for btree)
  */
 extern Datum btbuild(PG_FUNCTION_ARGS);
+extern Datum btbuildempty(PG_FUNCTION_ARGS);
 extern Datum btinsert(PG_FUNCTION_ARGS);
 extern Datum btbeginscan(PG_FUNCTION_ARGS);
 extern Datum btgettuple(PG_FUNCTION_ARGS);