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/*------------------------------------------------------------------------- * * backendid.h * POSTGRES backend id communication definitions * * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/storage/backendid.h * *------------------------------------------------------------------------- */ #ifndef BACKENDID_H #define BACKENDID_H /* ---------------- * -cim 8/17/90 * ---------------- */ typedef int BackendId; /* unique currently active backend identifier */ #define InvalidBackendId (-1) extern PGDLLIMPORT BackendId MyBackendId; /* backend id of this backend */ /* backend id of our parallel session leader, or InvalidBackendId if none */ extern PGDLLIMPORT BackendId ParallelMasterBackendId; /* * The BackendId to use for our session's temp relations is normally our own, * but parallel workers should use their leader's ID. */ #define BackendIdForTempRelations() \ (ParallelMasterBackendId == InvalidBackendId ? MyBackendId : ParallelMasterBackendId) #endif /* BACKENDID_H */