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Rename some functions to mention Relation instead of RelFileLocator.

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This is definitely shorter, and hopefully clearer.

Kyotaro Horiguchi, reviewed by Dilip Kumar and by me

Discussion: http://postgr.es/m/20220707.174436.1885393789789795413.horikyota.ntt@gmail.com
pull/92/head
Robert Haas 3 years ago
parent 5ca0fe5c8a
commit 09c5acee8e
5 changed files with 50 additions and 50 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. 63
      src/backend/storage/buffer/bufmgr.c
  2. 16
      src/backend/storage/buffer/localbuf.c
  3. 4
      src/backend/storage/smgr/smgr.c
  4. 7
      src/include/storage/buf_internals.h
  5. 10
      src/include/storage/bufmgr.h

63
src/backend/storage/buffer/bufmgr.c
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@ -121,7 +121,7 @@ typedef struct CkptTsStatus
* Type for array used to sort SMgrRelations
*
* FlushRelationsAllBuffers shares the same comparator function with
* DropRelFileLocatorsAllBuffers. Pointer to this struct and RelFileLocator must be
* DropRelationsAllBuffers. Pointer to this struct and RelFileLocator must be
* compatible.
*/
typedef struct SMgrSortArray
@ -483,10 +483,10 @@ static BufferDesc *BufferAlloc(SMgrRelation smgr,
BufferAccessStrategy strategy,
bool *foundPtr);
static void FlushBuffer(BufferDesc *buf, SMgrRelation reln);
static void FindAndDropRelFileLocatorBuffers(RelFileLocator rlocator,
ForkNumber forkNum,
BlockNumber nForkBlock,
BlockNumber firstDelBlock);
static void FindAndDropRelationBuffers(RelFileLocator rlocator,
ForkNumber forkNum,
BlockNumber nForkBlock,
BlockNumber firstDelBlock);
static void RelationCopyStorageUsingBuffer(Relation src, Relation dst,
ForkNumber forkNum,
bool isunlogged);
@ -3026,7 +3026,7 @@ BufferGetLSNAtomic(Buffer buffer)
}
/* ---------------------------------------------------------------------
* DropRelFileLocatorBuffers
* DropRelationBuffers
*
* This function removes from the buffer pool all the pages of the
* specified relation forks that have block numbers >= firstDelBlock.
@ -3047,8 +3047,8 @@ BufferGetLSNAtomic(Buffer buffer)
* --------------------------------------------------------------------
*/
void
DropRelFileLocatorBuffers(SMgrRelation smgr_reln, ForkNumber *forkNum,
int nforks, BlockNumber *firstDelBlock)
DropRelationBuffers(SMgrRelation smgr_reln, ForkNumber *forkNum,
int nforks, BlockNumber *firstDelBlock)
{
int i;
int j;
@ -3064,8 +3064,8 @@ DropRelFileLocatorBuffers(SMgrRelation smgr_reln, ForkNumber *forkNum,
if (rlocator.backend == MyBackendId)
{
for (j = 0; j < nforks; j++)
DropRelFileLocatorLocalBuffers(rlocator.locator, forkNum[j],
firstDelBlock[j]);
DropRelationLocalBuffers(rlocator.locator, forkNum[j],
firstDelBlock[j]);
}
return;
}
@ -3115,8 +3115,8 @@ DropRelFileLocatorBuffers(SMgrRelation smgr_reln, ForkNumber *forkNum,
nBlocksToInvalidate < BUF_DROP_FULL_SCAN_THRESHOLD)
{
for (j = 0; j < nforks; j++)
FindAndDropRelFileLocatorBuffers(rlocator.locator, forkNum[j],
nForkBlock[j], firstDelBlock[j]);
FindAndDropRelationBuffers(rlocator.locator, forkNum[j],
nForkBlock[j], firstDelBlock[j]);
return;
}
@ -3162,16 +3162,15 @@ DropRelFileLocatorBuffers(SMgrRelation smgr_reln, ForkNumber *forkNum,
}
/* ---------------------------------------------------------------------
* DropRelFileLocatorsAllBuffers
* DropRelationsAllBuffers
*
* This function removes from the buffer pool all the pages of all
* forks of the specified relations. It's equivalent to calling
* DropRelFileLocatorBuffers once per fork per relation with
* firstDelBlock = 0.
* --------------------------------------------------------------------
* DropRelationBuffers once per fork per relation with firstDelBlock = 0.
* --------------------------------------------------------------------
*/
void
DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
DropRelationsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
{
int i;
int j;
@ -3194,7 +3193,7 @@ DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
if (RelFileLocatorBackendIsTemp(smgr_reln[i]->smgr_rlocator))
{
if (smgr_reln[i]->smgr_rlocator.backend == MyBackendId)
DropRelFileLocatorAllLocalBuffers(smgr_reln[i]->smgr_rlocator.locator);
DropRelationAllLocalBuffers(smgr_reln[i]->smgr_rlocator.locator);
}
else
rels[n++] = smgr_reln[i];
@ -3219,7 +3218,7 @@ DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
/*
* We can avoid scanning the entire buffer pool if we know the exact size
* of each of the given relation forks. See DropRelFileLocatorBuffers.
* of each of the given relation forks. See DropRelationBuffers.
*/
for (i = 0; i < n && cached; i++)
{
@ -3257,8 +3256,8 @@ DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
continue;
/* drop all the buffers for a particular relation fork */
FindAndDropRelFileLocatorBuffers(rels[i]->smgr_rlocator.locator,
j, block[i][j], 0);
FindAndDropRelationBuffers(rels[i]->smgr_rlocator.locator,
j, block[i][j], 0);
}
}
@ -3291,7 +3290,7 @@ DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
uint32 buf_state;
/*
* As in DropRelFileLocatorBuffers, an unlocked precheck should be
* As in DropRelationBuffers, an unlocked precheck should be
* safe and saves some cycles.
*/
@ -3331,7 +3330,7 @@ DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
}
/* ---------------------------------------------------------------------
* FindAndDropRelFileLocatorBuffers
* FindAndDropRelationBuffers
*
* This function performs look up in BufMapping table and removes from the
* buffer pool all the pages of the specified relation fork that has block
@ -3340,9 +3339,9 @@ DropRelFileLocatorsAllBuffers(SMgrRelation *smgr_reln, int nlocators)
* --------------------------------------------------------------------
*/
static void
FindAndDropRelFileLocatorBuffers(RelFileLocator rlocator, ForkNumber forkNum,
BlockNumber nForkBlock,
BlockNumber firstDelBlock)
FindAndDropRelationBuffers(RelFileLocator rlocator, ForkNumber forkNum,
BlockNumber nForkBlock,
BlockNumber firstDelBlock)
{
BlockNumber curBlock;
@ -3397,7 +3396,7 @@ FindAndDropRelFileLocatorBuffers(RelFileLocator rlocator, ForkNumber forkNum,
* bothering to write them out first. This is used when we destroy a
* database, to avoid trying to flush data to disk when the directory
* tree no longer exists. Implementation is pretty similar to
* DropRelFileLocatorBuffers() which is for destroying just one relation.
* DropRelationBuffers() which is for destroying just one relation.
* --------------------------------------------------------------------
*/
void
@ -3416,7 +3415,7 @@ DropDatabaseBuffers(Oid dbid)
uint32 buf_state;
/*
* As in DropRelFileLocatorBuffers, an unlocked precheck should be
* As in DropRelationBuffers, an unlocked precheck should be
* safe and saves some cycles.
*/
if (bufHdr->tag.rlocator.dbOid != dbid)
@ -3561,7 +3560,7 @@ FlushRelationBuffers(Relation rel)
bufHdr = GetBufferDescriptor(i);
/*
* As in DropRelFileLocatorBuffers, an unlocked precheck should be
* As in DropRelationBuffers, an unlocked precheck should be
* safe and saves some cycles.
*/
if (!RelFileLocatorEquals(bufHdr->tag.rlocator, rel->rd_locator))
@ -3616,7 +3615,7 @@ FlushRelationsAllBuffers(SMgrRelation *smgrs, int nrels)
/*
* Save the bsearch overhead for low number of relations to sync. See
* DropRelFileLocatorsAllBuffers for details.
* DropRelationsAllBuffers for details.
*/
use_bsearch = nrels > RELS_BSEARCH_THRESHOLD;
@ -3634,7 +3633,7 @@ FlushRelationsAllBuffers(SMgrRelation *smgrs, int nrels)
uint32 buf_state;
/*
* As in DropRelFileLocatorBuffers, an unlocked precheck should be
* As in DropRelationBuffers, an unlocked precheck should be
* safe and saves some cycles.
*/
@ -3864,7 +3863,7 @@ FlushDatabaseBuffers(Oid dbid)
bufHdr = GetBufferDescriptor(i);
/*
* As in DropRelFileLocatorBuffers, an unlocked precheck should be
* As in DropRelationBuffers, an unlocked precheck should be
* safe and saves some cycles.
*/
if (bufHdr->tag.rlocator.dbOid != dbid)

16
src/backend/storage/buffer/localbuf.c
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@ -312,7 +312,7 @@ MarkLocalBufferDirty(Buffer buffer)
}
/*
* DropRelFileLocatorLocalBuffers
* DropRelationLocalBuffers
* This function removes from the buffer pool all the pages of the
* specified relation that have block numbers >= firstDelBlock.
* (In particular, with firstDelBlock = 0, all pages are removed.)
@ -320,11 +320,11 @@ MarkLocalBufferDirty(Buffer buffer)
* out first. Therefore, this is NOT rollback-able, and so should be
* used only with extreme caution!
*
* See DropRelFileLocatorBuffers in bufmgr.c for more notes.
* See DropRelationBuffers in bufmgr.c for more notes.
*/
void
DropRelFileLocatorLocalBuffers(RelFileLocator rlocator, ForkNumber forkNum,
BlockNumber firstDelBlock)
DropRelationLocalBuffers(RelFileLocator rlocator, ForkNumber forkNum,
BlockNumber firstDelBlock)
{
int i;
@ -363,14 +363,14 @@ DropRelFileLocatorLocalBuffers(RelFileLocator rlocator, ForkNumber forkNum,
}
/*
* DropRelFileLocatorAllLocalBuffers
* DropRelationAllLocalBuffers
* This function removes from the buffer pool all pages of all forks
* of the specified relation.
*
* See DropRelFileLocatorsAllBuffers in bufmgr.c for more notes.
* See DropRelationsAllBuffers in bufmgr.c for more notes.
*/
void
DropRelFileLocatorAllLocalBuffers(RelFileLocator rlocator)
DropRelationAllLocalBuffers(RelFileLocator rlocator)
{
int i;
@ -589,7 +589,7 @@ AtProcExit_LocalBuffers(void)
{
/*
* We shouldn't be holding any remaining pins; if we are, and assertions
* aren't enabled, we'll fail later in DropRelFileLocatorBuffers while
* aren't enabled, we'll fail later in DropRelationBuffers while
* trying to drop the temp rels.
*/
CheckForLocalBufferLeaks();

4
src/backend/storage/smgr/smgr.c
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@ -430,7 +430,7 @@ smgrdounlinkall(SMgrRelation *rels, int nrels, bool isRedo)
* Get rid of any remaining buffers for the relations. bufmgr will just
* drop them without bothering to write the contents.
*/
DropRelFileLocatorsAllBuffers(rels, nrels);
DropRelationsAllBuffers(rels, nrels);
/*
* create an array which contains all relations to be dropped, and close
@ -631,7 +631,7 @@ smgrtruncate(SMgrRelation reln, ForkNumber *forknum, int nforks, BlockNumber *nb
* Get rid of any buffers for the about-to-be-deleted blocks. bufmgr will
* just drop them without bothering to write the contents.
*/
DropRelFileLocatorBuffers(reln, forknum, nforks, nblocks);
DropRelationBuffers(reln, forknum, nforks, nblocks);
/*
* Send a shared-inval message to force other backends to close any smgr

7
src/include/storage/buf_internals.h
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@ -337,9 +337,10 @@ extern PrefetchBufferResult PrefetchLocalBuffer(SMgrRelation smgr,
extern BufferDesc *LocalBufferAlloc(SMgrRelation smgr, ForkNumber forkNum,
BlockNumber blockNum, bool *foundPtr);
extern void MarkLocalBufferDirty(Buffer buffer);
extern void DropRelFileLocatorLocalBuffers(RelFileLocator rlocator, ForkNumber forkNum,
BlockNumber firstDelBlock);
extern void DropRelFileLocatorAllLocalBuffers(RelFileLocator rlocator);
extern void DropRelationLocalBuffers(RelFileLocator rlocator,
ForkNumber forkNum,
BlockNumber firstDelBlock);
extern void DropRelationAllLocalBuffers(RelFileLocator rlocator);
extern void AtEOXact_LocalBuffers(bool isCommit);
#endif /* BUFMGR_INTERNALS_H */

10
src/include/storage/bufmgr.h
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@ -208,11 +208,11 @@ extern void CreateAndCopyRelationData(RelFileLocator src_rlocator,
RelFileLocator dst_rlocator,
bool permanent);
extern void FlushDatabaseBuffers(Oid dbid);
extern void DropRelFileLocatorBuffers(struct SMgrRelationData *smgr_reln,
ForkNumber *forkNum,
int nforks, BlockNumber *firstDelBlock);
extern void DropRelFileLocatorsAllBuffers(struct SMgrRelationData **smgr_reln,
int nlocators);
extern void DropRelationBuffers(struct SMgrRelationData *smgr_reln,
ForkNumber *forkNum,
int nforks, BlockNumber *firstDelBlock);
extern void DropRelationsAllBuffers(struct SMgrRelationData **smgr_reln,
int nlocators);
extern void DropDatabaseBuffers(Oid dbid);
#define RelationGetNumberOfBlocks(reln) \

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