blob: 7aa3936899410c71d0f99129e4f35f7eb8cb030a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/*-------------------------------------------------------------------------
*
* backendid.h
* POSTGRES backend id communication definitions
*
*
* Portions Copyright (c) 1996-2021, 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 ParallelLeaderBackendId;
/*
* 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() \
(ParallelLeaderBackendId == InvalidBackendId ? MyBackendId : ParallelLeaderBackendId)
#endif /* BACKENDID_H */
|
