Safe Haskell	Safe
Language	Haskell2010

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 #