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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
commit | 6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch) | |
tree | 657d8194422a5daccecfd42d654b8a245ef7b4c8 /src/include/storage/backendid.h | |
parent | Initial commit. (diff) | |
download | postgresql-13-upstream.tar.xz postgresql-13-upstream.zip |
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/storage/backendid.h')
-rw-r--r-- | src/include/storage/backendid.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/include/storage/backendid.h b/src/include/storage/backendid.h new file mode 100644 index 0000000..0c776a3 --- /dev/null +++ b/src/include/storage/backendid.h @@ -0,0 +1,37 @@ +/*------------------------------------------------------------------------- + * + * backendid.h + * POSTGRES backend id communication definitions + * + * + * Portions Copyright (c) 1996-2020, 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 */ |