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Modify sinval so that InvalidateSharedInvalid() does not hold

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the SInval spinlock while it is calling the passed invalFunction or
resetFunction.  This is necessary to avoid deadlock with lmgr change;
InvalidateSharedInvalid can be called recursively now.  It should be
a good performance improvement anyway --- holding a spinlock for more
than a very short interval is a no-no.
This commit is contained in:
Tom Lane
1999-09-04 18:36:45 +00:00
parent ae01c7f5bb
commit 8add6d71cf
3 changed files with 114 additions and 93 deletions
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8
src/include/storage/sinvaladt.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: sinvaladt.h,v 1.16 1999/07/16 17:07:38 momjian Exp $
* $Id: sinvaladt.h,v 1.17 1999/09/04 18:36:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -128,9 +128,9 @@ extern int SISegmentInit(bool killExistingSegment, IPCKey key,
extern bool SISetDataEntry(SISeg *segP, SharedInvalidData *data);
extern void SISetProcStateInvalid(SISeg *segP);
extern bool SIDelDataEntry(SISeg *segP);
extern void SIReadEntryData(SISeg *segP, int backendId,
void (*invalFunction) (), void (*resetFunction) ());
extern int SIGetDataEntry(SISeg *segP, int backendId,
SharedInvalidData *data);
extern bool SIDelDataEntries(SISeg *segP, int n);
extern void SIDelExpiredDataEntries(SISeg *segP);
#endif /* SINVALADT_H */