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/*-------------------------------------------------------------------------
*
* procarray.h
* POSTGRES process array definitions.
*
*
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/storage/procarray.h,v 1.1 2005/05/19 21:35:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PROCARRAY_H
#define PROCARRAY_H
extern int ProcArrayShmemSize(int maxBackends);
extern void CreateSharedProcArray(int maxBackends);
extern void ProcArrayAddMyself(void);
extern void ProcArrayRemoveMyself(void);
extern bool TransactionIdIsInProgress(TransactionId xid);
extern TransactionId GetOldestXmin(bool allDbs);
/* Use "struct PGPROC", not PGPROC, to avoid including proc.h here */
extern struct PGPROC *BackendPidGetProc(int pid);
extern bool IsBackendPid(int pid);
extern bool DatabaseHasActiveBackends(Oid databaseId, bool ignoreMyself);
extern int CountActiveBackends(void);
extern int CountEmptyBackendSlots(void);
extern void XidCacheRemoveRunningXids(TransactionId xid,
int nxids, TransactionId *xids);
#endif /* PROCARRAY_H */
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