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Diffstat (limited to 'db2/log/log.src')
-rw-r--r-- | db2/log/log.src | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/db2/log/log.src b/db2/log/log.src new file mode 100644 index 0000000000..9f4829179b --- /dev/null +++ b/db2/log/log.src @@ -0,0 +1,53 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1996, 1997 + * Sleepycat Software. All rights reserved. + * + * @(#)log.src 10.3 (Sleepycat) 8/20/97 + * + * This is the source file used to create the logging functions for the + * log package. Each access method (or set of routines wishing to register + * record types with the transaction system) should have a file like this. + * Each type of log record and its parameters is defined. The basic + * format of a record definition is: + * + * BEGIN <RECORD_TYPE> + * ARG|STRING|POINTER <variable name> <variable type> <printf format> + * ... + * END + * ARG the argument is a simple parameter of the type * specified. + * DBT the argument is a DBT (db.h) containing a length and pointer. + * PTR the argument is a pointer to the data type specified; the entire + * type should be logged. + * + * There are a set of shell scripts of the form xxx.sh that generate c + * code and or h files to process these. (This is probably better done + * in a single PERL script, but for now, this works.) + * + * The DB recovery system requires the following three fields appear in + * every record, and will assign them to the per-record-type structures + * as well as making them the first parameters to the appropriate logging + * call. + * rectype: record-type, identifies the structure and log/read call + * txnid: transaction id, a DBT in this implementation + * prev: the last LSN for this transaction + */ + +/* + * Use the argument of PREFIX as the prefix for all record types, + * routines, id numbers, etc. + */ +PREFIX log + +/* Used for registering new name/id translations. */ +BEGIN register +DBT name DBT s +DBT uid DBT s +ARG id u_int32_t lu +ARG ftype DBTYPE lx +END + +BEGIN unregister +ARG id u_int32_t lu +END |