diff options
Diffstat (limited to 'src/include/storage/proc.h')
| -rw-r--r-- | src/include/storage/proc.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/src/include/storage/proc.h b/src/include/storage/proc.h index deeb06c9e01..ebcf0ad4036 100644 --- a/src/include/storage/proc.h +++ b/src/include/storage/proc.h @@ -78,12 +78,17 @@ struct XidCache #define PROC_XMIN_FLAGS (PROC_IN_VACUUM | PROC_IN_SAFE_IC) /* - * We allow a small number of "weak" relation locks (AccessShareLock, + * We allow a limited number of "weak" relation locks (AccessShareLock, * RowShareLock, RowExclusiveLock) to be recorded in the PGPROC structure - * rather than the main lock table. This eases contention on the lock - * manager LWLocks. See storage/lmgr/README for additional details. + * (or rather in shared memory referenced from PGPROC) rather than the main + * lock table. This eases contention on the lock manager LWLocks. See + * storage/lmgr/README for additional details. */ -#define FP_LOCK_SLOTS_PER_BACKEND 16 +extern PGDLLIMPORT int FastPathLockGroupsPerBackend; + +#define FP_LOCK_GROUPS_PER_BACKEND_MAX 1024 +#define FP_LOCK_SLOTS_PER_GROUP 16 /* don't change */ +#define FP_LOCK_SLOTS_PER_BACKEND (FP_LOCK_SLOTS_PER_GROUP * FastPathLockGroupsPerBackend) /* * Flags for PGPROC.delayChkptFlags @@ -292,8 +297,8 @@ struct PGPROC /* Lock manager data, recording fast-path locks taken by this backend. */ LWLock fpInfoLock; /* protects per-backend fast-path state */ - uint64 fpLockBits; /* lock modes held for each fast-path slot */ - Oid fpRelId[FP_LOCK_SLOTS_PER_BACKEND]; /* slots for rel oids */ + uint64 *fpLockBits; /* lock modes held for each fast-path slot */ + Oid *fpRelId; /* slots for rel oids */ bool fpVXIDLock; /* are we holding a fast-path VXID lock? */ LocalTransactionId fpLocalTransactionId; /* lxid for fast-path VXID * lock */ |