Module: MiqBerkeleyDB
- Defined in:
- lib/db/MiqBdb/MiqBdb.rb,
lib/db/MiqBdb/MiqBdbHash.rb,
lib/db/MiqBdb/MiqBdbPage.rb,
lib/db/MiqBdb/MiqBdbUtil.rb,
lib/db/MiqBdb/MiqBdbBtree.rb
Defined Under Namespace
Classes: MiqBdb, MiqBdbBtreeDatabase, MiqBdbHashDatabase, MiqBdbPage, MiqBdbUtil
Constant Summary collapse
- DBMETASIZE =
BerkeleyDB constants.
512
- DB_HASHMAGIC =
Size of metadata (in bytes) on disk.
0x00061561
- DB_BTREEMAGIC =
Magic for Hash database
0x00053162
- DB_QAMMAGIC =
Magic for BTree database
0x00042253
- DB_LOGMAGIC =
Magic for Queue database
0x00040988
- DB_RENAMEMAGIC =
Magic for Log database
0x00030800
- DBHEADER =
Database header.
BinaryStruct.new([ 'Q', 'lsn', # 00-07: LSN. 'L', 'pgno', # 08-11: Current page number. 'L', 'magic', # 12-15: Magic number. 'L', 'version', # 16-19: Version. 'L', 'pagesize', # 20-23: Pagesize. 'C', 'encrypt_alg', # 24: Encryption algorithm. 'C', 'p_type', # 25: Page type. 'C', 'metaflags', # 26: Meta-only flags. 'C', 'unused1', # 27: Unused. 'L', 'free', # 28-31: Free list page number. 'L', 'last_pgno', # 32-35: Page number of last page in db. 'L', 'unused3', # 36-39: Unused. 'L', 'key_count', # 40-43: Cached key count. 'L', 'record_count', # 44-47: Cached record count. 'L', 'flags', # 48-51: Flags: unique to each AM. 'a20', 'uid', # 52-71: Unique file ID. ])
- SIZEOF_DBHEADER =
DBHEADER.size