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30 lines
959 B
C
30 lines
959 B
C
/*
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* subtrans.h
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*
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* PostgreSQL subtransaction-log manager
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*
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* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/access/subtrans.h
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*/
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#ifndef SUBTRANS_H
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#define SUBTRANS_H
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/* Number of SLRU buffers to use for subtrans */
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#define NUM_SUBTRANS_BUFFERS 32
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extern void SubTransSetParent(TransactionId xid, TransactionId parent);
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extern TransactionId SubTransGetParent(TransactionId xid);
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extern TransactionId SubTransGetTopmostTransaction(TransactionId xid);
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extern Size SUBTRANSShmemSize(void);
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extern void SUBTRANSShmemInit(void);
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extern void BootStrapSUBTRANS(void);
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extern void StartupSUBTRANS(TransactionId oldestActiveXID);
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extern void ShutdownSUBTRANS(void);
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extern void CheckPointSUBTRANS(void);
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extern void ExtendSUBTRANS(TransactionId newestXact);
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extern void TruncateSUBTRANS(TransactionId oldestXact);
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#endif /* SUBTRANS_H */
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