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random-access-file-0.1.0.0: Random file access methods, supporting application-level page cache.

Safe HaskellSafe
LanguageHaskell2010

System.IO.RandomAccessFile.Common

Documentation

type Offset = Word64 Source #

type Size = Word64 Source #

class FileAccess a where Source #

Minimal complete definition

initFile, readBytes, writeBytes, currentFileSize, closeFile

Associated Types

data AccessParams a Source #

Methods

initFile :: AccessParams a -> FilePath -> IO a Source #

readBytes :: a -> Offset -> Size -> IO ByteString Source #

writeBytes :: a -> Offset -> ByteString -> IO () Source #

currentFileSize :: a -> IO Size Source #

syncFile :: a -> IO () Source #

closeFile :: a -> IO () Source #

Instances
FileAccess MMaped Source # 
Instance details

Defined in System.IO.RandomAccessFile.MMap

Associated Types

data AccessParams MMaped :: Type Source #

Methods

initFile :: AccessParams MMaped -> FilePath -> IO MMaped Source #

readBytes :: MMaped -> Offset -> Size -> IO ByteString Source #

writeBytes :: MMaped -> Offset -> ByteString -> IO () Source #

currentFileSize :: MMaped -> IO Size Source #

syncFile :: MMaped -> IO () Source #

closeFile :: MMaped -> IO () Source #

FileAccess Simple Source # 
Instance details

Defined in System.IO.RandomAccessFile.Simple

Associated Types

data AccessParams Simple :: Type Source #

Methods

initFile :: AccessParams Simple -> FilePath -> IO Simple Source #

readBytes :: Simple -> Offset -> Size -> IO ByteString Source #

writeBytes :: Simple -> Offset -> ByteString -> IO () Source #

currentFileSize :: Simple -> IO Size Source #

syncFile :: Simple -> IO () Source #

closeFile :: Simple -> IO () Source #

FileAccess Threaded Source # 
Instance details

Defined in System.IO.RandomAccessFile.Threaded

Associated Types

data AccessParams Threaded :: Type Source #

Methods

initFile :: AccessParams Threaded -> FilePath -> IO Threaded Source #

readBytes :: Threaded -> Offset -> Size -> IO ByteString Source #

writeBytes :: Threaded -> Offset -> ByteString -> IO () Source #

currentFileSize :: Threaded -> IO Size Source #

syncFile :: Threaded -> IO () Source #

closeFile :: Threaded -> IO () Source #

FileAccess a => FileAccess (Cached a) Source # 
Instance details

Defined in System.IO.RandomAccessFile.Cached

Associated Types

data AccessParams (Cached a) :: Type Source #

Methods

initFile :: AccessParams (Cached a) -> FilePath -> IO (Cached a) Source #

readBytes :: Cached a -> Offset -> Size -> IO ByteString Source #

writeBytes :: Cached a -> Offset -> ByteString -> IO () Source #

currentFileSize :: Cached a -> IO Size Source #

syncFile :: Cached a -> IO () Source #

closeFile :: Cached a -> IO () Source #

writeZeros :: FileAccess a => a -> Size -> IO () Source #

data AccessType Source #

Constructors

ReadAccess 
WriteAccess 

type FileLocks = Map Offset RWLock Source #

withQSem :: QSem -> IO a -> IO a Source #

withLock :: RWLock -> AccessType -> IO a -> IO a Source #

withLocks :: [RWLock] -> AccessType -> IO a -> IO a Source #

withLock_ :: Bool -> RWLock -> AccessType -> IO a -> IO a Source #

underBlockLock :: TVar FileLocks -> AccessType -> Offset -> IO a -> IO a Source #

underBlockLocks :: TVar FileLocks -> AccessType -> [Offset] -> IO a -> IO a Source #