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Rearrange bufmgr header files so that buf_internals.h need not be

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included by everything that includes bufmgr.h --- it's supposed to be
internals, after all, not part of the API!  This fixes the conflict
against FreeBSD headers reported by Rosenman, by making it unnecessary
for s_lock.h to be included by plperl.c.
REL7_1_STABLE
Tom Lane 25 years ago
parent 9f20852f87
commit 680b7357ce
13 changed files with 125 additions and 74 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 3
      src/backend/access/hash/hashpage.c
  2. 8
      src/backend/access/nbtree/nbtpage.c
  3. 29
      src/backend/storage/buffer/buf_init.c
  4. 3
      src/backend/storage/buffer/buf_table.c
  5. 4
      src/backend/storage/buffer/bufmgr.c
  6. 4
      src/backend/storage/buffer/freelist.c
  7. 30
      src/backend/storage/buffer/localbuf.c
  8. 9
      src/backend/storage/buffer/xlog_bufmgr.c
  9. 38
      src/backend/storage/buffer/xlog_localbuf.c
  10. 3
      src/backend/storage/ipc/ipci.c
  11. 3
      src/backend/storage/lmgr/lmgr.c
  12. 22
      src/include/storage/buf_internals.h
  13. 43
      src/include/storage/bufmgr.h

3
src/backend/access/hash/hashpage.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/hash/hashpage.c,v 1.27 2000/03/17 02:36:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/hash/hashpage.c,v 1.28 2000/11/30 01:39:06 tgl Exp $
*
* NOTES
* Postgres hash pages look like ordinary relation pages. The opaque
@ -29,6 +29,7 @@
#include "access/genam.h"
#include "access/hash.h"
#include "miscadmin.h"
#include "storage/lmgr.h"
static void _hash_setpagelock(Relation rel, BlockNumber blkno, int access);

8
src/backend/access/nbtree/nbtpage.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.40 2000/10/21 15:43:18 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtpage.c,v 1.41 2000/11/30 01:39:06 tgl Exp $
*
* NOTES
* Postgres btree pages look like ordinary relation pages. The opaque
@ -20,12 +20,14 @@
*
*-------------------------------------------------------------------------
*/
#include <time.h>
#include "postgres.h"
#include <time.h>
#include "access/nbtree.h"
#include "miscadmin.h"
#include "storage/lmgr.h"
/*
* We use high-concurrency locking on btrees. There are two cases in

29
src/backend/storage/buffer/buf_init.c
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@ -8,17 +8,17 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_init.c,v 1.38 2000/11/28 23:27:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_init.c,v 1.39 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <sys/types.h>
#include <sys/file.h>
#include <math.h>
#include <signal.h>
#include "postgres.h"
#include "catalog/catalog.h"
#include "executor/execdebug.h"
#include "miscadmin.h"
@ -54,7 +54,7 @@ int Lookup_List_Descriptor;
int Num_Descriptors;
BufferDesc *BufferDescriptors;
BufferBlock BufferBlocks;
Block *BufferBlockPointers;
long *PrivateRefCount; /* also used in freelist.c */
bits8 *BufferLocks; /* flag bits showing locks I have set */
@ -126,7 +126,7 @@ long int LocalBufferFlushCount;
/*
* Initialize module:
* Initialize module: called once during shared-memory initialization
*
* should calculate size of pool dynamically based on the
* amount of available memory.
@ -134,6 +134,7 @@ long int LocalBufferFlushCount;
void
InitBufferPool(void)
{
char *BufferBlocks;
bool foundBufs,
foundDescs;
int i;
@ -159,24 +160,22 @@ InitBufferPool(void)
ShmemInitStruct("Buffer Descriptors",
Num_Descriptors * sizeof(BufferDesc), &foundDescs);
BufferBlocks = (BufferBlock)
BufferBlocks = (char *)
ShmemInitStruct("Buffer Blocks",
NBuffers * BLCKSZ, &foundBufs);
if (foundDescs || foundBufs)
{
/* both should be present or neither */
Assert(foundDescs && foundBufs);
}
else
{
BufferDesc *buf;
unsigned long block;
char *block;
buf = BufferDescriptors;
block = (unsigned long) BufferBlocks;
block = BufferBlocks;
/*
* link the buffers into a circular, doubly-linked list to
@ -210,11 +209,21 @@ InitBufferPool(void)
SpinRelease(BufMgrLock);
BufferBlockPointers = (Block *) calloc(NBuffers, sizeof(Block));
PrivateRefCount = (long *) calloc(NBuffers, sizeof(long));
BufferLocks = (bits8 *) calloc(NBuffers, sizeof(bits8));
BufferTagLastDirtied = (BufferTag *) calloc(NBuffers, sizeof(BufferTag));
BufferBlindLastDirtied = (BufferBlindId *) calloc(NBuffers, sizeof(BufferBlindId));
BufferDirtiedByMe = (bool *) calloc(NBuffers, sizeof(bool));
/*
* Convert shmem offsets into addresses as seen by this process.
* This is just to speed up the BufferGetBlock() macro.
*/
for (i = 0; i < NBuffers; i++)
{
BufferBlockPointers[i] = (Block) MAKE_PTR(BufferDescriptors[i].data);
}
}
/* -----------------------------------------------------

3
src/backend/storage/buffer/buf_table.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_table.c,v 1.18 2000/10/18 05:50:15 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_table.c,v 1.19 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -29,6 +29,7 @@
#include "postgres.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"
static HTAB *SharedBufHash;

4
src/backend/storage/buffer/bufmgr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.95 2000/11/28 23:27:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.96 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -56,6 +56,8 @@
#include "executor/execdebug.h"
#include "miscadmin.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"
#include "storage/s_lock.h"
#include "storage/smgr.h"
#include "utils/relcache.h"

4
src/backend/storage/buffer/freelist.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/freelist.c,v 1.21 2000/04/09 04:43:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/freelist.c,v 1.22 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -26,6 +26,8 @@
*/
#include "postgres.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"

30
src/backend/storage/buffer/localbuf.c
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@ -16,7 +16,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/localbuf.c,v 1.35 2000/11/20 16:47:32 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/localbuf.c,v 1.36 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -33,6 +33,8 @@
#include <signal.h>
#include "executor/execdebug.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"
#include "storage/smgr.h"
#include "utils/relcache.h"
@ -40,6 +42,7 @@ extern long int LocalBufferFlushCount;
int NLocBuffer = 64;
BufferDesc *LocalBufferDescriptors = NULL;
Block *LocalBufferBlockPointers = NULL;
long *LocalRefCount = NULL;
static int nextFreeLocalBuf = 0;
@ -135,14 +138,24 @@ LocalBufferAlloc(Relation reln, BlockNumber blockNum, bool *foundPtr)
bufHdr->flags &= ~BM_DIRTY;
/*
* lazy memory allocation. (see MAKE_PTR for why we need to do
* MAKE_OFFSET.)
* lazy memory allocation: allocate space on first use of a buffer.
*/
if (bufHdr->data == (SHMEM_OFFSET) 0)
{
char *data = (char *) malloc(BLCKSZ);
if (data == NULL)
elog(FATAL, "Out of memory in LocalBufferAlloc");
/*
* This is a bit of a hack: bufHdr->data needs to be a shmem offset
* for consistency with the shared-buffer case, so make it one
* even though it's not really a valid shmem offset.
*/
bufHdr->data = MAKE_OFFSET(data);
/*
* Set pointer for use by BufferGetBlock() macro.
*/
LocalBufferBlockPointers[-(bufHdr->buf_id + 2)] = (Block) data;
}
*foundPtr = FALSE;
@ -223,7 +236,7 @@ FlushLocalBuffer(Buffer buffer, bool sync, bool release)
/*
* InitLocalBuffer -
* init the local buffer cache. Since most queries (esp. multi-user ones)
* don't involve local buffers, we delay allocating memory for actual the
* don't involve local buffers, we delay allocating actual memory for the
* buffer until we need it.
*/
void
@ -235,8 +248,9 @@ InitLocalBuffer(void)
* these aren't going away. I'm not gonna use palloc.
*/
LocalBufferDescriptors =
(BufferDesc *) malloc(sizeof(BufferDesc) * NLocBuffer);
MemSet(LocalBufferDescriptors, 0, sizeof(BufferDesc) * NLocBuffer);
(BufferDesc *) calloc(NLocBuffer, sizeof(BufferDesc));
LocalBufferBlockPointers = (Block *) calloc(NLocBuffer, sizeof(Block));
LocalRefCount = (long *) calloc(NLocBuffer, sizeof(long));
nextFreeLocalBuf = 0;
for (i = 0; i < NLocBuffer; i++)
@ -251,9 +265,6 @@ InitLocalBuffer(void)
*/
buf->buf_id = -i - 2;
}
LocalRefCount = (long *) malloc(sizeof(long) * NLocBuffer);
MemSet(LocalRefCount, 0, sizeof(long) * NLocBuffer);
}
/*
@ -308,7 +319,6 @@ ResetLocalBufferPool(void)
buf->tag.rnode.relNode = InvalidOid;
buf->flags &= ~BM_DIRTY;
buf->buf_id = -i - 2;
}
MemSet(LocalRefCount, 0, sizeof(long) * NLocBuffer);

9
src/backend/storage/buffer/xlog_bufmgr.c
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@ -1,6 +1,6 @@
/*-------------------------------------------------------------------------
*
* bufmgr.c
* xlog_bufmgr.c
* buffer manager interface routines
*
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/Attic/xlog_bufmgr.c,v 1.5 2000/11/28 23:27:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/Attic/xlog_bufmgr.c,v 1.6 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -39,14 +39,17 @@
* freelist.c -- chooses victim for buffer replacement
* buf_table.c -- manages the buffer lookup table
*/
#include "postgres.h"
#include <sys/types.h>
#include <sys/file.h>
#include <math.h>
#include <signal.h>
#include "postgres.h"
#include "executor/execdebug.h"
#include "miscadmin.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"
#include "storage/s_lock.h"
#include "storage/smgr.h"
#include "utils/relcache.h"

38
src/backend/storage/buffer/xlog_localbuf.c
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@ -1,6 +1,6 @@
/*-------------------------------------------------------------------------
*
* localbuf.c
* xlog_localbuf.c
* local buffer manager. Fast buffer manager for temporary tables
* or special cases when the operation is not visible to other backends.
*
@ -16,18 +16,20 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/Attic/xlog_localbuf.c,v 1.1 2000/10/28 16:20:56 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/Attic/xlog_localbuf.c,v 1.2 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <sys/types.h>
#include <sys/file.h>
#include <math.h>
#include <signal.h>
#include "postgres.h"
#include "executor/execdebug.h"
#include "storage/buf_internals.h"
#include "storage/bufmgr.h"
#include "storage/smgr.h"
#include "utils/relcache.h"
@ -35,6 +37,7 @@ extern long int LocalBufferFlushCount;
int NLocBuffer = 64;
BufferDesc *LocalBufferDescriptors = NULL;
Block *LocalBufferBlockPointers = NULL;
long *LocalRefCount = NULL;
static int nextFreeLocalBuf = 0;
@ -131,14 +134,24 @@ LocalBufferAlloc(Relation reln, BlockNumber blockNum, bool *foundPtr)
bufHdr->cntxDirty = false;
/*
* lazy memory allocation. (see MAKE_PTR for why we need to do
* MAKE_OFFSET.)
* lazy memory allocation: allocate space on first use of a buffer.
*/
if (bufHdr->data == (SHMEM_OFFSET) 0)
{
char *data = (char *) malloc(BLCKSZ);
if (data == NULL)
elog(FATAL, "Out of memory in LocalBufferAlloc");
/*
* This is a bit of a hack: bufHdr->data needs to be a shmem offset
* for consistency with the shared-buffer case, so make it one
* even though it's not really a valid shmem offset.
*/
bufHdr->data = MAKE_OFFSET(data);
/*
* Set pointer for use by BufferGetBlock() macro.
*/
LocalBufferBlockPointers[-(bufHdr->buf_id + 2)] = (Block) data;
}
*foundPtr = FALSE;
@ -175,7 +188,7 @@ WriteLocalBuffer(Buffer buffer, bool release)
/*
* InitLocalBuffer -
* init the local buffer cache. Since most queries (esp. multi-user ones)
* don't involve local buffers, we delay allocating memory for actual the
* don't involve local buffers, we delay allocating actual memory for the
* buffer until we need it.
*/
void
@ -187,8 +200,9 @@ InitLocalBuffer(void)
* these aren't going away. I'm not gonna use palloc.
*/
LocalBufferDescriptors =
(BufferDesc *) malloc(sizeof(BufferDesc) * NLocBuffer);
MemSet(LocalBufferDescriptors, 0, sizeof(BufferDesc) * NLocBuffer);
(BufferDesc *) calloc(NLocBuffer, sizeof(BufferDesc));
LocalBufferBlockPointers = (Block *) calloc(NLocBuffer, sizeof(Block));
LocalRefCount = (long *) calloc(NLocBuffer, sizeof(long));
nextFreeLocalBuf = 0;
for (i = 0; i < NLocBuffer; i++)
@ -203,9 +217,6 @@ InitLocalBuffer(void)
*/
buf->buf_id = -i - 2;
}
LocalRefCount = (long *) malloc(sizeof(long) * NLocBuffer);
MemSet(LocalRefCount, 0, sizeof(long) * NLocBuffer);
}
/*
@ -238,7 +249,7 @@ LocalBufferSync(void)
Assert(bufrel != NULL);
smgrwrite(DEFAULT_SMGR, bufrel, buf->tag.blockNum,
(char *) MAKE_PTR(buf->data));
(char *) MAKE_PTR(buf->data));
smgrmarkdirty(DEFAULT_SMGR, bufrel, buf->tag.blockNum);
LocalBufferFlushCount++;
@ -266,7 +277,6 @@ ResetLocalBufferPool(void)
buf->tag.rnode.relNode = InvalidOid;
buf->flags &= ~BM_DIRTY;
buf->cntxDirty = false;
buf->buf_id = -i - 2;
}
MemSet(LocalRefCount, 0, sizeof(long) * NLocBuffer);

3
src/backend/storage/ipc/ipci.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipci.c,v 1.35 2000/11/28 23:27:56 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipci.c,v 1.36 2000/11/30 01:39:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -19,6 +19,7 @@
#include "miscadmin.h"
#include "access/xlog.h"
#include "storage/bufmgr.h"
#include "storage/lmgr.h"
#include "storage/proc.h"
#include "storage/sinval.h"
#include "storage/spin.h"

3
src/backend/storage/lmgr/lmgr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lmgr.c,v 1.41 2000/06/08 22:37:24 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/lmgr/lmgr.c,v 1.42 2000/11/30 01:39:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -18,6 +18,7 @@
#include "access/transam.h"
#include "catalog/catalog.h"
#include "miscadmin.h"
#include "storage/lmgr.h"
#include "utils/inval.h"

22
src/include/storage/buf_internals.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: buf_internals.h,v 1.44 2000/11/28 23:27:57 tgl Exp $
* $Id: buf_internals.h,v 1.45 2000/11/30 01:39:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -18,14 +18,17 @@
#include "storage/lmgr.h"
#include "storage/s_lock.h"
/* Buf Mgr constants */
/* in bufmgr.c */
extern int NBuffers;
extern int Data_Descriptors;
extern int Free_List_Descriptor;
extern int Lookup_List_Descriptor;
extern int Num_Descriptors;
extern int ShowPinTrace;
/*
* Flags for buffer descriptors
*/
@ -40,9 +43,6 @@ extern int Num_Descriptors;
typedef bits16 BufFlags;
/* long * so alignment will be correct */
typedef long **BufferBlock;
typedef struct buftag
{
RelFileNode rnode;
@ -63,7 +63,7 @@ typedef struct buftag
)
/*
* We don't need in this data any more but it allows more user
* We don't need this data any more but it allows more user
* friendly error messages. Feel free to get rid of it
* (and change a lot of places -:))
*/
@ -73,9 +73,6 @@ typedef struct bufblindid
char relname[NAMEDATALEN]; /* name of reln */
} BufferBlindId;
#define BAD_BUFFER_ID(bid) ((bid) < 1 || (bid) > NBuffers)
#define INVALID_DESCRIPTOR (-3)
/*
* BufferDesc -- shared buffer cache metadata for a single
* shared buffer descriptor.
@ -123,6 +120,8 @@ typedef struct sbufdesc
void (*CleanupFunc)(Buffer);
} BufferDesc;
#define BufferDescriptorGetBuffer(bdesc) ((bdesc)->buf_id + 1)
/*
* Each backend has its own BufferLocks[] array holding flag bits
* showing what locks it has set on each buffer.
@ -182,8 +181,6 @@ extern bool BufTableInsert(BufferDesc *buf);
/* bufmgr.c */
extern BufferDesc *BufferDescriptors;
extern BufferBlock BufferBlocks;
extern long *PrivateRefCount;
extern bits8 *BufferLocks;
extern BufferTag *BufferTagLastDirtied;
extern BufferBlindId *BufferBlindLastDirtied;
@ -192,15 +189,12 @@ extern bool *BufferDirtiedByMe;
extern SPINLOCK BufMgrLock;
/* localbuf.c */
extern long *LocalRefCount;
extern BufferDesc *LocalBufferDescriptors;
extern int NLocBuffer;
extern BufferDesc *LocalBufferAlloc(Relation reln, BlockNumber blockNum,
bool *foundPtr);
extern int WriteLocalBuffer(Buffer buffer, bool release);
extern int FlushLocalBuffer(Buffer buffer, bool sync, bool release);
extern void InitLocalBuffer(void);
extern void LocalBufferSync(void);
extern void ResetLocalBufferPool(void);

43
src/include/storage/bufmgr.h
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@ -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

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