acid-state-0.14.0: Add ACID guarantees to any serializable Haskell data structure.

Safe HaskellNone
LanguageHaskell2010

Data.Acid.Log

Documentation

data FileLog object Source

Constructors

FileLog 

Fields

logIdentifier :: LogKey object
 
logCurrent :: MVar FHandle
 
logNextEntryId :: TVar EntryId
 
logQueue :: TVar ([ByteString], [IO ()])
 
logThreads :: [ThreadId]
 

data LogKey object Source

Constructors

LogKey 

Fields

logDirectory :: FilePath
 
logPrefix :: String
 

type EntryId = Int Source

openFileLog :: LogKey object -> IO (FileLog object) Source

closeFileLog :: FileLog object -> IO () Source

pushEntry :: SafeCopy object => FileLog object -> object -> IO () -> IO () Source

pushAction :: FileLog object -> IO () -> IO () Source

ensureLeastEntryId :: FileLog object -> EntryId -> IO () Source

readEntriesFrom :: SafeCopy object => FileLog object -> EntryId -> IO [object] Source

rollbackTo :: SafeCopy object => LogKey object -> EntryId -> IO () Source

rollbackWhile :: SafeCopy object => LogKey object -> (object -> Bool) -> IO () Source

newestEntry :: SafeCopy object => LogKey object -> IO (Maybe object) Source

askCurrentEntryId :: FileLog object -> IO EntryId Source

cutFileLog :: FileLog object -> IO EntryId Source

archiveFileLog :: FileLog object -> EntryId -> IO () Source