diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/access/clog.h | 8 | ||||
| -rw-r--r-- | src/include/access/transam.h | 7 | ||||
| -rw-r--r-- | src/include/access/xlog_internal.h | 2 |
3 files changed, 15 insertions, 2 deletions
diff --git a/src/include/access/clog.h b/src/include/access/clog.h index 2894bd5620b..60a9e11a0fa 100644 --- a/src/include/access/clog.h +++ b/src/include/access/clog.h @@ -28,6 +28,12 @@ typedef int XidStatus; #define TRANSACTION_STATUS_ABORTED 0x02 #define TRANSACTION_STATUS_SUB_COMMITTED 0x03 +typedef struct xl_clog_truncate +{ + int pageno; + TransactionId oldestXact; + Oid oldestXactDb; +} xl_clog_truncate; extern void TransactionIdSetTreeStatus(TransactionId xid, int nsubxids, TransactionId *subxids, XidStatus status, XLogRecPtr lsn); @@ -42,7 +48,7 @@ extern void TrimCLOG(void); extern void ShutdownCLOG(void); extern void CheckPointCLOG(void); extern void ExtendCLOG(TransactionId newestXact); -extern void TruncateCLOG(TransactionId oldestXact); +extern void TruncateCLOG(TransactionId oldestXact, Oid oldestxid_datoid); /* XLOG stuff */ #define CLOG_ZEROPAGE 0x00 diff --git a/src/include/access/transam.h b/src/include/access/transam.h index 522c1040737..d25a2dd2073 100644 --- a/src/include/access/transam.h +++ b/src/include/access/transam.h @@ -134,6 +134,12 @@ typedef struct VariableCacheData */ TransactionId latestCompletedXid; /* newest XID that has committed or * aborted */ + + /* + * These fields are protected by CLogTruncationLock + */ + TransactionId oldestClogXid; /* oldest it's safe to look up in clog */ + } VariableCacheData; typedef VariableCacheData *VariableCache; @@ -173,6 +179,7 @@ extern TransactionId GetNewTransactionId(bool isSubXact); extern TransactionId ReadNewTransactionId(void); extern void SetTransactionIdLimit(TransactionId oldest_datfrozenxid, Oid oldest_datoid); +extern void AdvanceOldestClogXid(TransactionId oldest_datfrozenxid); extern bool ForceTransactionIdLimitUpdate(void); extern Oid GetNewObjectId(void); diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h index 7957cab98c6..c09c0f8e5f4 100644 --- a/src/include/access/xlog_internal.h +++ b/src/include/access/xlog_internal.h @@ -31,7 +31,7 @@ /* * Each page of XLOG file has a header like this: */ -#define XLOG_PAGE_MAGIC 0xD096 /* can be used as WAL version indicator */ +#define XLOG_PAGE_MAGIC 0xD097 /* can be used as WAL version indicator */ typedef struct XLogPageHeaderData { |