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-rw-r--r--db2/include/lock.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/db2/include/lock.h b/db2/include/lock.h
index 18d29e8740..8f9e81c0fa 100644
--- a/db2/include/lock.h
+++ b/db2/include/lock.h
@@ -4,13 +4,19 @@
* Copyright (c) 1996, 1997
* Sleepycat Software. All rights reserved.
*
- * @(#)lock.h 10.7 (Sleepycat) 7/29/97
+ * @(#)lock.h 10.8 (Sleepycat) 9/23/97
*/
typedef struct __db_lockobj DB_LOCKOBJ;
#define DB_DEFAULT_LOCK_FILE "__db_lock.share"
#define DB_LOCK_DEFAULT_N 5000
+
+/*
+ * The locker id space is divided between the transaction manager and the lock
+ * manager. Lockid's start at 0 and go to DB_LOCK_MAXID. Txn Id's start at
+ * DB_LOCK_MAXID + 1 and go up to TXN_INVALID.
+ */
#define DB_LOCK_MAXID 0x7fffffff
/*