1 files changed, 0 insertions, 156 deletions
diff --git a/src/backend/storage/buffer/buf_table.c b/src/backend/storage/buffer/buf_table.c
deleted file mode 100644
index 2a923279b69..00000000000
--- a/src/backend/storage/buffer/buf_table.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * buf_table.c
- *	  routines for finding buffers in the buffer pool.
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_table.c,v 1.27 2002/06/20 20:29:34 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-/*
- * OLD COMMENTS
- *
- * Data Structures:
- *
- *		Buffers are identified by their BufferTag (buf.h).	This
- * file contains routines for allocating a shmem hash table to
- * map buffer tags to buffer descriptors.
- *
- * Synchronization:
- *
- *	All routines in this file assume BufMgrLock is held by their caller.
- */
-
-#include "postgres.h"
-
-#include "storage/buf_internals.h"
-#include "storage/bufmgr.h"
-
-static HTAB *SharedBufHash;
-
-
-/*
- * Initialize shmem hash table for mapping buffers
- */
-void
-InitBufTable(void)
-{
-	HASHCTL		info;
-
-	/* assume lock is held */
-
-	/* BufferTag maps to Buffer */
-	info.keysize = sizeof(BufferTag);
-	info.entrysize = sizeof(BufferLookupEnt);
-	info.hash = tag_hash;
-
-	SharedBufHash = ShmemInitHash("Shared Buffer Lookup Table",
-								  NBuffers, NBuffers,
-								  &info,
-								  HASH_ELEM | HASH_FUNCTION);
-
-	if (!SharedBufHash)
-		elog(FATAL, "couldn't initialize shared buffer pool Hash Tbl");
-}
-
-BufferDesc *
-BufTableLookup(BufferTag *tagPtr)
-{
-	BufferLookupEnt *result;
-
-	if (tagPtr->blockNum == P_NEW)
-		return NULL;
-
-	result = (BufferLookupEnt *)
-		hash_search(SharedBufHash, (void *) tagPtr, HASH_FIND, NULL);
-	if (!result)
-		return NULL;
-
-	return &(BufferDescriptors[result->id]);
-}
-
-/*
- * BufTableDelete
- */
-bool
-BufTableDelete(BufferDesc *buf)
-{
-	BufferLookupEnt *result;
-
-	/*
-	 * buffer not initialized or has been removed from table already.
-	 * BM_DELETED keeps us from removing buffer twice.
-	 */
-	if (buf->flags & BM_DELETED)
-		return TRUE;
-
-	buf->flags |= BM_DELETED;
-
-	result = (BufferLookupEnt *)
-		hash_search(SharedBufHash, (void *) &(buf->tag), HASH_REMOVE, NULL);
-
-	if (!result)
-	{
-		/* shouldn't happen */
-		elog(ERROR, "BufTableDelete: BufferLookup table corrupted");
-		return FALSE;
-	}
-
-	/*
-	 * Clear the buffer's tag.  This doesn't matter for the hash table,
-	 * since the buffer is already removed from it, but it ensures that
-	 * sequential searches through the buffer table won't think the buffer
-	 * is still valid for its old page.
-	 */
-	buf->tag.rnode.relNode = InvalidOid;
-	buf->tag.rnode.tblNode = InvalidOid;
-
-	return TRUE;
-}
-
-bool
-BufTableInsert(BufferDesc *buf)
-{
-	BufferLookupEnt *result;
-	bool		found;
-
-	/* cannot insert it twice */
-	Assert(buf->flags & BM_DELETED);
-	buf->flags &= ~(BM_DELETED);
-
-	result = (BufferLookupEnt *)
-		hash_search(SharedBufHash, (void *) &(buf->tag), HASH_ENTER, &found);
-
-	if (!result)
-	{
-		elog(ERROR, "BufTableInsert: BufferLookup table out of memory");
-		return FALSE;
-	}
-
-	/* found something else in the table ! */
-	if (found)
-	{
-		elog(ERROR, "BufTableInsert: BufferLookup table corrupted");
-		return FALSE;
-	}
-
-	result->id = buf->buf_id;
-	return TRUE;
-}
-
-/* prints out collision stats for the buf table */
-#ifdef NOT_USED
-void
-DBG_LookupListCheck(int nlookup)
-{
-	nlookup = 10;
-
-	hash_stats("Shared", SharedBufHash);
-}
-
-#endif