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4eda0a6470
Some frontend code like e.g. pg_xlogdump or pg_resetxlog, has to use backend headers. Unfortunately until now that code includes most of the locking code. It's generally not nice to expose such low level details, but de6fd1c898 made that a hard problem. We fall back to defining 'inline' away if the compiler doesn't support it - that can cause linker errors like on buildfarm animal pademelon if a inline function references backend only code. To fix that problem separate definitions from lock.h that are required from frontend code into lockdefs.h and use it in the relevant places. I've only removed the minimal amount of necessary definitions for now - it might turn out that we want more for other reasons. To avoid such details being exposed again put some checks against being included from frontend code into atomics.h, lock.h, lwlock.h and s_lock.h. It's otherwise fairly easy to indirectly include these headers. Discussion: 20150806070902.GE12214@awork2.anarazel.de
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* procarray.h
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* POSTGRES process array definitions.
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*
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*
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* Portions Copyright (c) 1996-2015, 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/storage/procarray.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PROCARRAY_H
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#define PROCARRAY_H
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#include "storage/lock.h"
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#include "storage/standby.h"
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#include "utils/relcache.h"
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#include "utils/snapshot.h"
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extern Size ProcArrayShmemSize(void);
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extern void CreateSharedProcArray(void);
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extern void ProcArrayAdd(PGPROC *proc);
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extern void ProcArrayRemove(PGPROC *proc, TransactionId latestXid);
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extern void ProcArrayEndTransaction(PGPROC *proc, TransactionId latestXid);
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extern void ProcArrayClearTransaction(PGPROC *proc);
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extern void ProcArrayInitRecovery(TransactionId initializedUptoXID);
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extern void ProcArrayApplyRecoveryInfo(RunningTransactions running);
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extern void ProcArrayApplyXidAssignment(TransactionId topxid,
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int nsubxids, TransactionId *subxids);
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extern void RecordKnownAssignedTransactionIds(TransactionId xid);
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extern void ExpireTreeKnownAssignedTransactionIds(TransactionId xid,
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int nsubxids, TransactionId *subxids,
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TransactionId max_xid);
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extern void ExpireAllKnownAssignedTransactionIds(void);
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extern void ExpireOldKnownAssignedTransactionIds(TransactionId xid);
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extern int GetMaxSnapshotXidCount(void);
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extern int GetMaxSnapshotSubxidCount(void);
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extern Snapshot GetSnapshotData(Snapshot snapshot);
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extern bool ProcArrayInstallImportedXmin(TransactionId xmin,
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TransactionId sourcexid);
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extern bool ProcArrayInstallRestoredXmin(TransactionId xmin, PGPROC *proc);
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extern RunningTransactions GetRunningTransactionData(void);
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extern bool TransactionIdIsInProgress(TransactionId xid);
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extern bool TransactionIdIsActive(TransactionId xid);
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extern TransactionId GetOldestXmin(Relation rel, bool ignoreVacuum);
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extern TransactionId GetOldestActiveTransactionId(void);
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extern TransactionId GetOldestSafeDecodingTransactionId(void);
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extern VirtualTransactionId *GetVirtualXIDsDelayingChkpt(int *nvxids);
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extern bool HaveVirtualXIDsDelayingChkpt(VirtualTransactionId *vxids, int nvxids);
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extern PGPROC *BackendPidGetProc(int pid);
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extern int BackendXidGetPid(TransactionId xid);
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extern bool IsBackendPid(int pid);
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extern VirtualTransactionId *GetCurrentVirtualXIDs(TransactionId limitXmin,
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bool excludeXmin0, bool allDbs, int excludeVacuum,
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int *nvxids);
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extern VirtualTransactionId *GetConflictingVirtualXIDs(TransactionId limitXmin, Oid dbOid);
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extern pid_t CancelVirtualTransaction(VirtualTransactionId vxid, ProcSignalReason sigmode);
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extern bool MinimumActiveBackends(int min);
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extern int CountDBBackends(Oid databaseid);
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extern void CancelDBBackends(Oid databaseid, ProcSignalReason sigmode, bool conflictPending);
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extern int CountUserBackends(Oid roleid);
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extern bool CountOtherDBBackends(Oid databaseId,
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int *nbackends, int *nprepared);
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extern void XidCacheRemoveRunningXids(TransactionId xid,
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int nxids, const TransactionId *xids,
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TransactionId latestXid);
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extern void ProcArraySetReplicationSlotXmin(TransactionId xmin,
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TransactionId catalog_xmin, bool already_locked);
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extern void ProcArrayGetReplicationSlotXmin(TransactionId *xmin,
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TransactionId *catalog_xmin);
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#endif /* PROCARRAY_H */
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