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Add Hook SmgrExtend #1

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Add Hook SmgrExtend #1

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6 changes: 6 additions & 0 deletions src/backend/storage/smgr/smgr.c
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,9 @@
#include "utils/inval.h"


/* Hook for plugin to get control in smgrextend() */
SmgrExtend_hook_type SmgrExtend_hook = NULL;

/*
* This struct of function pointers defines the API between smgr.c and
* any individual storage manager module. Note that smgr subfunctions are
Expand Down Expand Up @@ -600,6 +603,9 @@ void
smgrextend(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
char *buffer, bool skipFsync)
{
if (SmgrExtend_hook)
(*SmgrExtend_hook)(reln, forknum, blocknum,
buffer, skipFsync);
smgrsw[reln->smgr_which].smgr_extend(reln, forknum, blocknum,
buffer, skipFsync);
}
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6 changes: 6 additions & 0 deletions src/include/storage/smgr.h
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Expand Up @@ -77,6 +77,12 @@ typedef struct SMgrRelationData

typedef SMgrRelationData *SMgrRelation;

/* Hook for plugins to get control in smgrextend() */
typedef void (*SmgrExtend_hook_type) (SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
char *buffer, bool skipFsync);
extern PGDLLIMPORT SmgrExtend_hook_type SmgrExtend_hook;


#define SmgrIsTemp(smgr) \
RelFileNodeBackendIsTemp((smgr)->smgr_rnode)

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1 change: 1 addition & 0 deletions src/tools/pgindent/typedefs.list
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Expand Up @@ -2161,6 +2161,7 @@ SlruPageStatus
SlruScanCallback
SlruShared
SlruSharedData
SmgrExtend_hook_type
SnapBuild
SnapBuildOnDisk
SnapBuildState
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