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authorHeikki Linnakangas2024-02-21 23:21:34 +0000
committerHeikki Linnakangas2024-02-21 23:21:34 +0000
commit28f3915b73f75bd1b50ba070f56b34241fe53fd1 (patch)
tree10d305f3f98af6cfae7d683ce9b13c449d8e8796 /src/include
parent4989ce72644b9d636b9b23c7a1719a405e62670b (diff)
Remove superfluous 'pgprocno' field from PGPROC
It was always just the index of the PGPROC entry from the beginning of the proc array. Introduce a macro to compute it from the pointer instead. Reviewed-by: Andres Freund Discussion: https://www.postgresql.org/message-id/8171f1aa-496f-46a6-afc3-c46fe7a9b407@iki.fi
Diffstat (limited to 'src/include')
-rw-r--r--src/include/storage/lock.h2
-rw-r--r--src/include/storage/proc.h9
2 files changed, 4 insertions, 7 deletions
diff --git a/src/include/storage/lock.h b/src/include/storage/lock.h
index 00679624f7d..ed6071f3286 100644
--- a/src/include/storage/lock.h
+++ b/src/include/storage/lock.h
@@ -540,7 +540,7 @@ typedef enum
* used for a given lock group is determined by the group leader's pgprocno.
*/
#define LockHashPartitionLockByProc(leader_pgproc) \
- LockHashPartitionLock((leader_pgproc)->pgprocno)
+ LockHashPartitionLock(GetNumberFromPGProc(leader_pgproc))
/*
* function prototypes
diff --git a/src/include/storage/proc.h b/src/include/storage/proc.h
index 20d6fa652dc..4453c6df877 100644
--- a/src/include/storage/proc.h
+++ b/src/include/storage/proc.h
@@ -194,11 +194,6 @@ struct PGPROC
int pgxactoff; /* offset into various ProcGlobal->arrays with
* data mirrored from this PGPROC */
- int pgprocno; /* Number of this PGPROC in
- * ProcGlobal->allProcs array. This is set
- * once by InitProcGlobal().
- * ProcGlobal->allProcs[n].pgprocno == n */
-
/* These fields are zero while a backend is still starting up: */
BackendId backendId; /* This backend's backend ID (if assigned) */
Oid databaseId; /* OID of database this backend is using */
@@ -307,6 +302,7 @@ struct PGPROC
extern PGDLLIMPORT PGPROC *MyProc;
+extern PGDLLIMPORT int MyProcNumber; /* same as GetNumberFromPGProc(MyProc) */
/*
* There is one ProcGlobal struct for the whole database cluster.
@@ -410,8 +406,9 @@ extern PGDLLIMPORT PROC_HDR *ProcGlobal;
extern PGDLLIMPORT PGPROC *PreparedXactProcs;
-/* Accessor for PGPROC given a pgprocno. */
+/* Accessor for PGPROC given a pgprocno, and vice versa. */
#define GetPGProcByNumber(n) (&ProcGlobal->allProcs[(n)])
+#define GetNumberFromPGProc(proc) ((proc) - &ProcGlobal->allProcs[0])
/*
* We set aside some extra PGPROC structures for auxiliary processes,