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Convert macros to static inline functions (bufmgr.h) 

Reviewed-by: Amul Sul <sulamul@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/5b558da8-99fb-0a99-83dd-f72f05388517%40enterprisedb.com
This commit is contained in:
Peter Eisentraut 2022-07-13 14:33:03 +02:00
parent aeb767ca0b
commit 9c727360bc
1 changed files with 36 additions and 23 deletions
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59
src/include/storage/bufmgr.h
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@ -98,7 +98,7 @@ extern PGDLLIMPORT int32 *LocalRefCount;
#define BUFFER_LOCK_EXCLUSIVE 2
/*
* These routines are beaten on quite heavily, hence the macroization.
* These routines are beaten on quite heavily, hence inline.
*/
/*
@ -120,11 +120,14 @@ extern PGDLLIMPORT int32 *LocalRefCount;
* even in non-assert-enabled builds can be significant. Thus, we've
* now demoted the range checks to assertions within the macro itself.
*/
#define BufferIsValid(bufnum) \
( \
AssertMacro((bufnum) <= NBuffers && (bufnum) >= -NLocBuffer), \
(bufnum) != InvalidBuffer \
)
static inline bool
BufferIsValid(Buffer bufnum)
{
Assert(bufnum <= NBuffers);
Assert(bufnum >= -NLocBuffer);
return bufnum != InvalidBuffer;
}
/*
* BufferGetBlock
@ -133,14 +136,16 @@ extern PGDLLIMPORT int32 *LocalRefCount;
* Note:
* Assumes buffer is valid.
*/
#define BufferGetBlock(buffer) \
( \
AssertMacro(BufferIsValid(buffer)), \
BufferIsLocal(buffer) ? \
LocalBufferBlockPointers[-(buffer) - 1] \
: \
(Block) (BufferBlocks + ((Size) ((buffer) - 1)) * BLCKSZ) \
)
static inline Block
BufferGetBlock(Buffer buffer)
{
Assert(BufferIsValid(buffer));
if (BufferIsLocal(buffer))
return LocalBufferBlockPointers[-buffer - 1];
else
return (Block) (BufferBlocks + ((Size) (buffer - 1)) * BLCKSZ);
}
/*
* BufferGetPageSize
@ -153,11 +158,12 @@ extern PGDLLIMPORT int32 *LocalRefCount;
* (formatted) disk page.
*/
/* XXX should dig out of buffer descriptor */
#define BufferGetPageSize(buffer) \
( \
AssertMacro(BufferIsValid(buffer)), \
(Size)BLCKSZ \
)
static inline Size
BufferGetPageSize(Buffer buffer)
{
AssertMacro(BufferIsValid(buffer));
return (Size) BLCKSZ;
}
/*
* BufferGetPage
@ -166,7 +172,11 @@ extern PGDLLIMPORT int32 *LocalRefCount;
* When this is called as part of a scan, there may be a need for a nearby
* call to TestForOldSnapshot(). See the definition of that for details.
*/
#define BufferGetPage(buffer) ((Page)BufferGetBlock(buffer))
static inline Page
BufferGetPage(Buffer buffer)
{
return (Page) BufferGetBlock(buffer);
}
/*
* prototypes for functions in bufmgr.c
@ -201,6 +211,12 @@ extern void CheckPointBuffers(int flags);
extern BlockNumber BufferGetBlockNumber(Buffer buffer);
extern BlockNumber RelationGetNumberOfBlocksInFork(Relation relation,
ForkNumber forkNum);
static inline BlockNumber
RelationGetNumberOfBlocks(Relation reln)
{
return RelationGetNumberOfBlocksInFork(reln, MAIN_FORKNUM);
}
extern void FlushOneBuffer(Buffer buffer);
extern void FlushRelationBuffers(Relation rel);
extern void FlushRelationsAllBuffers(struct SMgrRelationData **smgrs, int nrels);
@ -215,9 +231,6 @@ extern void DropRelationsAllBuffers(struct SMgrRelationData **smgr_reln,
int nlocators);
extern void DropDatabaseBuffers(Oid dbid);
#define RelationGetNumberOfBlocks(reln) \
RelationGetNumberOfBlocksInFork(reln, MAIN_FORKNUM)
extern bool BufferIsPermanent(Buffer buffer);
extern XLogRecPtr BufferGetLSNAtomic(Buffer buffer);