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| author | Tom Lane <tgl@sss.pgh.pa.us> | 1999-03-06 21:17:56 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 1999-03-06 21:17:56 +0000 |
| commit | 731603a92b115db97c1202df243954195070c500 (patch) | |
| tree | 1f1226cc72e3635f2800042ebfda6316d9f8a2ea /src/include | |
| parent | 03842eb03bbded18a55177e40594018f05a73623 (diff) | |
| download | postgresql-731603a92b115db97c1202df243954195070c500.tar.gz postgresql-731603a92b115db97c1202df243954195070c500.zip | |
A few further tweaks to shared memory space estimation.
This change brings the default size of the main shmem block back under 1MB,
which is a fairly popular value for the kernel's SHMMAX parameter.
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/storage/lock.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/include/storage/lock.h b/src/include/storage/lock.h index ce1f30133f3..da77f1d523c 100644 --- a/src/include/storage/lock.h +++ b/src/include/storage/lock.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: lock.h,v 1.23 1999/02/21 01:41:47 tgl Exp $ + * $Id: lock.h,v 1.24 1999/03/06 21:17:43 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -57,8 +57,6 @@ typedef int LOCKMETHOD; #define USER_LOCKMETHOD 2 #define MIN_LOCKMETHOD DEFAULT_LOCKMETHOD -/*typedef struct LOCK LOCK; */ - typedef struct LTAG { @@ -174,6 +172,9 @@ typedef struct XIDLookupEnt SHM_QUEUE queue; } XIDLookupEnt; +#define SHMEM_XIDTAB_KEYSIZE sizeof(XIDTAG) +#define SHMEM_XIDTAB_DATASIZE (sizeof(XIDLookupEnt) - SHMEM_XIDTAB_KEYSIZE) + #define XID_TAGSIZE (sizeof(XIDTAG)) #define XIDENT_LOCKMETHOD(xident) (XIDTAG_LOCKMETHOD((xident).tag)) @@ -210,6 +211,9 @@ typedef struct LOCK int nActive; } LOCK; +#define SHMEM_LOCKTAB_KEYSIZE sizeof(LOCKTAG) +#define SHMEM_LOCKTAB_DATASIZE (sizeof(LOCK) - SHMEM_LOCKTAB_KEYSIZE) + #define LOCK_LOCKMETHOD(lock) (LOCKTAG_LOCKMETHOD((lock).tag)) #define LockGetLock_nHolders(l) l->nHolders |