held locks after exit

[Aaron Richton <richton@nbcs.rutgers.edu>]

After an otherwise "clean" exit of test058, the smc/db directory showed 
the following, despite the fact that there was no more 9196 pid on the 
system. Is there any facility in db4 to trace locking?

I don't think slapd's own debugging would give the level of detail that 
would be necessary to find a smoking gun, but if I'm just reading stuff 
wrong, I have the testrun directory from this.

---------- begin output ----------

Default locking region information:
138	Last allocated locker ID
0x7fffffff	Current maximum unused locker ID
9	Number of lock modes
1000	Maximum number of locks possible
1000	Maximum number of lockers possible
1000	Maximum number of lock objects possible
20	Number of lock object partitions
4	Number of current locks
12	Maximum number of locks at any one time
3	Maximum number of locks in any one bucket
0	Maximum number of locks stolen by for an empty partition
0	Maximum number of locks stolen for any one partition
9	Number of current lockers
15	Maximum number of lockers at any one time
4	Number of current lock objects
8	Maximum number of lock objects at any one time
2	Maximum number of lock objects in any one bucket
0	Maximum number of objects stolen by for an empty partition
0	Maximum number of objects stolen for any one partition
1009	Total number of locks requested
1005	Total number of locks released
0	Total number of locks upgraded
46	Total number of locks downgraded
4	Lock requests not available due to conflicts, for which we waited
0	Lock requests not available due to conflicts, for which we did not wait
0	Number of deadlocks
0	Lock timeout value
0	Number of locks that have timed out
0	Transaction timeout value
0	Number of transactions that have timed out
488KB	The size of the lock region
4	The number of partition locks that required waiting (0%)
4	The maximum number of times any partition lock was waited for (0%)
0	The number of object queue operations that required waiting (0%)
1	The number of locker allocations that required waiting (0%)
0	The number of region locks that required waiting (0%)
2	Maximum hash bucket length
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Lock REGINFO information:
Lock	Region type
5	Region ID
__db.005	Region name
0xfecf0000	Original region address
0xfecf0000	Region address
0xfecf00c8	Region primary address
0	Region maximum allocation
0	Region allocated
Region allocations: 3006 allocations, 0 failures, 0 frees, 1 longest
Allocations by power-of-two sizes:
  1KB	3003
  2KB	0
  4KB	0
  8KB	0
 16KB	2
 32KB	0
 64KB	1
128KB	0
256KB	0
512KB	0
1024KB	0
REGION_JOIN_OK	Region flags
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Lock region parameters:
104	Lock region region mutex [0/119 0% 11775/1]
1031	locker table size
1031	object table size
616	obj_off
63456	locker_off
0	need_dd
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Lock conflict matrix:
0	0	0	0	0	0	0	0	0
0	0	1	0	1	0	1	0	1
0	1	1	1	1	1	1	1	1
0	0	0	0	0	0	0	0	0
0	1	1	0	0	0	0	1	1
0	0	1	0	0	0	0	0	1
0	1	1	0	0	0	0	1	1
0	0	1	0	1	0	1	0	0
0	1	1	0	1	1	1	0	1
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Locks grouped by lockers:
Locker   Mode      Count Status  ----------------- Object ---------------
      85 dd= 0 locks held 1    write locks 0    pid/thread 9196/1
      85 READ          1 HELD    id2entry.bdb              handle        0
      86 dd= 0 locks held 0    write locks 0    pid/thread 9196/1
      87 dd= 0 locks held 1    write locks 0    pid/thread 9196/1
      87 READ          1 HELD    dn2id.bdb                 handle        0
      88 dd= 0 locks held 0    write locks 0    pid/thread 9196/1
      89 dd= 0 locks held 0    write locks 0    pid/thread 9196/1
      8a dd= 0 locks held 0    write locks 0    pid/thread 9196/1
8000013c dd= 0 locks held 0    write locks 0    pid/thread 9196/1
8000013d dd= 0 locks held 0    write locks 0    pid/thread 9196/1
80000145 dd= 0 locks held 2    write locks 2    pid/thread 9196/1
80000145 WRITE         1 HELD    0x39548 len:   5 data: 0000000x0100
80000145 WRITE         1 HELD    id2entry.bdb              page          1
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Locks grouped by object:
Locker   Mode      Count Status  ----------------- Object ---------------
80000145 WRITE         1 HELD    0x39548 len:   5 data: 0000000x0100

80000145 WRITE         1 HELD    id2entry.bdb              page          1

      85 READ          1 HELD    id2entry.bdb              handle        0

      87 READ          1 HELD    dn2id.bdb                 handle        0