diff options
Diffstat (limited to 'src/include/storage/bufmgr.h')
| -rw-r--r-- | src/include/storage/bufmgr.h | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/src/include/storage/bufmgr.h b/src/include/storage/bufmgr.h index 275146eea80..2452ac64967 100644 --- a/src/include/storage/bufmgr.h +++ b/src/include/storage/bufmgr.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2000, PostgreSQL, Inc * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: bufmgr.h,v 1.44 2000/11/28 23:27:57 tgl Exp $ + * $Id: bufmgr.h,v 1.45 2000/11/30 01:39:08 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -15,14 +15,35 @@ #define BUFMGR_H #include "access/xlogdefs.h" -#include "storage/buf_internals.h" +#include "storage/buf.h" +#include "storage/lock.h" #include "storage/relfilenode.h" +#include "utils/rel.h" typedef void *Block; +/* in globals.c ... this duplicates miscadmin.h */ +extern int NBuffers; + +/* in buf_init.c */ +extern Block *BufferBlockPointers; +extern long *PrivateRefCount; + +/* in localbuf.c */ +extern int NLocBuffer; +extern Block *LocalBufferBlockPointers; +extern long *LocalRefCount; + /* special pageno for bget */ #define P_NEW InvalidBlockNumber /* grow the file to get a new page */ +/* + * Buffer context lock modes + */ +#define BUFFER_LOCK_UNLOCK 0 +#define BUFFER_LOCK_SHARE 1 +#define BUFFER_LOCK_EXCLUSIVE 2 + /********************************************************************** @@ -32,18 +53,10 @@ typedef void *Block; /* * These routines are beaten on quite heavily, hence the macroization. - * See buf_internals.h for a related comment. */ -#define BufferDescriptorGetBuffer(bdesc) ((bdesc)->buf_id + 1) -extern int ShowPinTrace; - -/* - * Buffer context lock modes - */ -#define BUFFER_LOCK_UNLOCK 0 -#define BUFFER_LOCK_SHARE 1 -#define BUFFER_LOCK_EXCLUSIVE 2 +#define BAD_BUFFER_ID(bid) ((bid) < 1 || (bid) > NBuffers) +#define INVALID_DESCRIPTOR (-3) #define UnlockAndReleaseBuffer(buffer) \ ( \ @@ -136,9 +149,9 @@ extern int ShowPinTrace; ( \ AssertMacro(BufferIsValid(buffer)), \ BufferIsLocal(buffer) ? \ - ((Block) MAKE_PTR(LocalBufferDescriptors[-(buffer) - 1].data)) \ + LocalBufferBlockPointers[-(buffer) - 1] \ : \ - ((Block) MAKE_PTR(BufferDescriptors[(buffer) - 1].data)) \ + BufferBlockPointers[(buffer) - 1] \ ) @@ -184,4 +197,6 @@ extern void BufmgrCommit(void); extern void BufferSync(void); #endif +extern void InitLocalBuffer(void); + #endif |