diff options
Diffstat (limited to 'db2/include/lock.h')
| -rw-r--r-- | db2/include/lock.h | 52 |
1 files changed, 13 insertions, 39 deletions
diff --git a/db2/include/lock.h b/db2/include/lock.h index 5031b65d06..47a38b8783 100644 --- a/db2/include/lock.h +++ b/db2/include/lock.h @@ -1,16 +1,19 @@ /*- * See the file LICENSE for redistribution information. * - * Copyright (c) 1996, 1997 + * Copyright (c) 1996, 1997, 1998 * Sleepycat Software. All rights reserved. * - * @(#)lock.h 10.10 (Sleepycat) 11/13/97 + * @(#)lock.h 10.15 (Sleepycat) 5/10/98 */ typedef struct __db_lockobj DB_LOCKOBJ; #define DB_DEFAULT_LOCK_FILE "__db_lock.share" -#define DB_LOCK_DEFAULT_N 5000 + +#ifndef DB_LOCK_DEFAULT_N +#define DB_LOCK_DEFAULT_N 5000 /* Default # of locks in region. */ +#endif /* * The locker id space is divided between the transaction manager and the lock @@ -54,9 +57,9 @@ struct __db_lockregion { /* Macros to lock/unlock the region. */ #define LOCK_LOCKREGION(lt) \ - (void)__db_mutex_lock(&(lt)->region->hdr.lock, (lt)->fd) + (void)__db_mutex_lock(&(lt)->region->hdr.lock, (lt)->reginfo.fd) #define UNLOCK_LOCKREGION(lt) \ - (void)__db_mutex_unlock(&(lt)->region->hdr.lock, (lt)->fd) + (void)__db_mutex_unlock(&(lt)->region->hdr.lock, (lt)->reginfo.fd) /* * Since we will be keeping DBTs in shared memory, we need the equivalent @@ -69,9 +72,6 @@ typedef struct __sh_dbt { #define SH_DBT_PTR(p) ((void *)(((u_int8_t *)(p)) + (p)->off)) -/* - * The lock table is the per-process cookie returned from a lock_open call. - */ struct __db_lockobj { SH_DBT lockobj; /* Identifies object locked. */ SH_TAILQ_ENTRY links; /* Links for free list. */ @@ -98,12 +98,14 @@ struct __db_lockobj { #define holders dlinks._holders #define heldby dlinks._heldby +/* + * The lock table is the per-process cookie returned from a lock_open call. + */ struct __db_locktab { DB_ENV *dbenv; /* Environment. */ - int fd; /* mapped file descriptor */ - DB_LOCKREGION *region; /* address of shared memory region */ + REGINFO reginfo; /* Region information. */ + DB_LOCKREGION *region; /* Address of shared memory region. */ DB_HASHTAB *hashtab; /* Beginning of hash table. */ - size_t reg_size; /* last known size of lock region */ void *mem; /* Beginning of string space. */ u_int8_t *conflicts; /* Pointer to conflict matrix. */ }; @@ -113,21 +115,6 @@ struct __db_locktab { T->conflicts[HELD * T->region->nmodes + WANTED] /* - * Status of a lock. - */ -typedef enum { - DB_LSTAT_ABORTED, /* Lock belongs to an aborted txn. */ - DB_LSTAT_ERR, /* Lock is bad. */ - DB_LSTAT_FREE, /* Lock is unallocated. */ - DB_LSTAT_HELD, /* Lock is currently held. */ - DB_LSTAT_NOGRANT, /* Lock was not granted. */ - DB_LSTAT_PENDING, /* Lock was waiting and has been - * promoted; waiting for the owner - * to run and upgrade it to held. */ - DB_LSTAT_WAITING /* Lock is on the wait queue. */ -} db_status_t; - -/* * Resources in the lock region. Used to indicate which resource * is running low when we need to grow the region. */ @@ -187,17 +174,4 @@ struct __db_lock { ALIGN((N) * sizeof(DB_LOCKOBJ), sizeof(size_t)) + \ ALIGN(STRING_SIZE(N), sizeof(size_t))) -#ifdef DEBUG -#define LOCK_DEBUG_LOCKERS 0x0001 -#define LOCK_DEBUG_LOCK 0x0002 -#define LOCK_DEBUG_OBJ 0x0004 -#define LOCK_DEBUG_CONF 0x0008 -#define LOCK_DEBUG_MEM 0x0010 -#define LOCK_DEBUG_BUCKET 0x0020 -#define LOCK_DEBUG_OBJECTS 0x0040 -#define LOCK_DEBUG_ALL 0xFFFF - -#define LOCK_DEBUG_NOMUTEX 0x0100 -#endif - #include "lock_ext.h" |