granicus.if.org Git - postgresql/blob - src/include/storage/procarray.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * procarray.h
   4  *        POSTGRES process array definitions.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL: pgsql/src/include/storage/procarray.h,v 1.2 2005/06/17 22:32:50 tgl Exp $
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef PROCARRAY_H
  15 #define PROCARRAY_H
  16
  17 #include "storage/lock.h"
  18
  19
  20 extern int      ProcArrayShmemSize(void);
  21 extern void CreateSharedProcArray(void);
  22 extern void ProcArrayAdd(PGPROC *proc);
  23 extern void ProcArrayRemove(PGPROC *proc);
  24
  25 extern bool TransactionIdIsInProgress(TransactionId xid);
  26 extern bool TransactionIdIsActive(TransactionId xid);
  27 extern TransactionId GetOldestXmin(bool allDbs);
  28
  29 extern PGPROC *BackendPidGetProc(int pid);
  30 extern bool IsBackendPid(int pid);
  31 extern bool DatabaseHasActiveBackends(Oid databaseId, bool ignoreMyself);
  32
  33 extern int      CountActiveBackends(void);
  34
  35 extern void XidCacheRemoveRunningXids(TransactionId xid,
  36                                                   int nxids, TransactionId *xids);
  37
  38 #endif   /* PROCARRAY_H */