Foreign.Storable

base-4.12.0.0: Basic libraries

Copyright | (c) The FFI task force 2001
License | see libraries/base/LICENSE
Maintainer | ffi@haskell.org
Stability | provisional
Portability | portable
Safe Haskell | Trustworthy
Language | Haskell2010

Foreign.Storable

Description

The module Foreign.Storable provides most elementary support for marshalling and is part of the language-independent portion of the Foreign Function Interface (FFI), and will normally be imported via the Foreign module.

Synopsis

- class Storable a where
  - sizeOf :: a -> Int
  - alignment :: a -> Int
  - peekElemOff :: Ptr a -> Int -> IO a
  - pokeElemOff :: Ptr a -> Int -> a -> IO ()
  - peekByteOff :: Ptr b -> Int -> IO a
  - pokeByteOff :: Ptr b -> Int -> a -> IO ()
  - peek :: Ptr a -> IO a
  - poke :: Ptr a -> a -> IO ()

# Documentation

class Storable a where Source #

The member functions of this class facilitate writing values of primitive types to raw memory (which may have been allocated with the above mentioned routines) and reading values from blocks of raw memory. The class, furthermore, includes support for computing the storage requirements and alignment restrictions of storable types.

Memory addresses are represented as values of type ``Ptr` a`, for some `a` which is an instance of class `Storable`. The type argument to `Ptr` helps provide some valuable type safety in FFI code (you can't mix pointers of different types without an explicit cast), while helping the Haskell type system figure out which marshalling method is needed for a given pointer.

All marshalling between Haskell and a foreign language ultimately boils down to translating Haskell data structures into the binary representation of a corresponding data structure of the foreign language and vice versa. To code this marshalling in Haskell, it is necessary to manipulate primitive data types stored in unstructured memory blocks. The class `Storable` facilitates this manipulation on all types for which it is instantiated, which are the standard basic types of Haskell, the fixed size `Int` types (`Int8`, `Int16`, `Int32`, `Int64`), the fixed size `Word` types (`Word8`, `Word16`, `Word32`, `Word64`), `StablePtr`, all types from Foreign.C.Types, as well as `Ptr`.

Minimal complete definition

sizeOf, alignment, (peek | peekElemOff | peekByteOff), (poke | pokeElemOff | pokeByteOff)

Methods

sizeOf :: a -> Int Source #

Computes the storage requirements (in bytes) of the argument. The value of the argument is not used.

alignment :: a -> Int Source #

Computes the alignment constraint of the argument. An alignment constraint `x` is fulfilled by any address divisible by `x`. The value of the argument is not used.

peekElemOff :: Ptr a -> Int -> IO a Source #

Read a value from a memory area regarded as an array of values of the same kind. The first argument specifies the start address of the array and the second the index into the array (the first element of the array has index `0`). The following equality holds,

    peekElemOff addr idx = IOExts.fixIO $ \result ->
      peek (addr `plusPtr` (idx * sizeOf result))

Note that this is only a specification, not necessarily the concrete implementation of the function.

pokeElemOff :: Ptr a -> Int -> a -> IO () Source #

Write a value to a memory area regarded as an array of values of the same kind. The following equality holds:

    pokeElemOff addr idx x =
      poke (addr `plusPtr` (idx * sizeOf x)) x

peekByteOff :: Ptr b -> Int -> IO a Source #

Read a value from a memory location given by a base address and offset. The following equality holds:

    peekByteOff addr off = peek (addr `plusPtr` off)

pokeByteOff :: Ptr b -> Int -> a -> IO () Source #

Write a value to a memory location given by a base address and offset. The following equality holds:

    pokeByteOff addr off x = poke (addr `plusPtr` off) x

peek :: Ptr a -> IO a Source #

Read a value from the given memory location.

Note that the peek and poke functions might require properly aligned addresses to function correctly. This is architecture dependent; thus, portable code should ensure that when peeking or poking values of some type `a`, the alignment constraint for `a`, as given by the function `alignment` is fulfilled.

poke :: Ptr a -> a -> IO () Source #

Write the given value to the given memory location. Alignment restrictions might apply; see `peek`.

Instances

Storable Bool # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Bool -> Int Source # alignment :: Bool -> Int Source # peekElemOff :: Ptr Bool -> Int -> IO Bool Source # pokeElemOff :: Ptr Bool -> Int -> Bool -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Bool Source # pokeByteOff :: Ptr b -> Int -> Bool -> IO () Source # peek :: Ptr Bool -> IO Bool Source # poke :: Ptr Bool -> Bool -> IO () Source #
Storable Char # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Char -> Int Source # alignment :: Char -> Int Source # peekElemOff :: Ptr Char -> Int -> IO Char Source # pokeElemOff :: Ptr Char -> Int -> Char -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Char Source # pokeByteOff :: Ptr b -> Int -> Char -> IO () Source # peek :: Ptr Char -> IO Char Source # poke :: Ptr Char -> Char -> IO () Source #
Storable Double # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Double -> Int Source # alignment :: Double -> Int Source # peekElemOff :: Ptr Double -> Int -> IO Double Source # pokeElemOff :: Ptr Double -> Int -> Double -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Double Source # pokeByteOff :: Ptr b -> Int -> Double -> IO () Source # peek :: Ptr Double -> IO Double Source # poke :: Ptr Double -> Double -> IO () Source #
Storable Float # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Float -> Int Source # alignment :: Float -> Int Source # peekElemOff :: Ptr Float -> Int -> IO Float Source # pokeElemOff :: Ptr Float -> Int -> Float -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Float Source # pokeByteOff :: Ptr b -> Int -> Float -> IO () Source # peek :: Ptr Float -> IO Float Source # poke :: Ptr Float -> Float -> IO () Source #
Storable Int # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Int -> Int Source # alignment :: Int -> Int Source # peekElemOff :: Ptr Int -> Int -> IO Int Source # pokeElemOff :: Ptr Int -> Int -> Int -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Int Source # pokeByteOff :: Ptr b -> Int -> Int -> IO () Source # peek :: Ptr Int -> IO Int Source # poke :: Ptr Int -> Int -> IO () Source #
Storable Int8 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Int8 -> Int Source # alignment :: Int8 -> Int Source # peekElemOff :: Ptr Int8 -> Int -> IO Int8 Source # pokeElemOff :: Ptr Int8 -> Int -> Int8 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Int8 Source # pokeByteOff :: Ptr b -> Int -> Int8 -> IO () Source # peek :: Ptr Int8 -> IO Int8 Source # poke :: Ptr Int8 -> Int8 -> IO () Source #
Storable Int16 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Int16 -> Int Source # alignment :: Int16 -> Int Source # peekElemOff :: Ptr Int16 -> Int -> IO Int16 Source # pokeElemOff :: Ptr Int16 -> Int -> Int16 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Int16 Source # pokeByteOff :: Ptr b -> Int -> Int16 -> IO () Source # peek :: Ptr Int16 -> IO Int16 Source # poke :: Ptr Int16 -> Int16 -> IO () Source #
Storable Int32 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Int32 -> Int Source # alignment :: Int32 -> Int Source # peekElemOff :: Ptr Int32 -> Int -> IO Int32 Source # pokeElemOff :: Ptr Int32 -> Int -> Int32 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Int32 Source # pokeByteOff :: Ptr b -> Int -> Int32 -> IO () Source # peek :: Ptr Int32 -> IO Int32 Source # poke :: Ptr Int32 -> Int32 -> IO () Source #
Storable Int64 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Int64 -> Int Source # alignment :: Int64 -> Int Source # peekElemOff :: Ptr Int64 -> Int -> IO Int64 Source # pokeElemOff :: Ptr Int64 -> Int -> Int64 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Int64 Source # pokeByteOff :: Ptr b -> Int -> Int64 -> IO () Source # peek :: Ptr Int64 -> IO Int64 Source # poke :: Ptr Int64 -> Int64 -> IO () Source #
Storable Word # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Word -> Int Source # alignment :: Word -> Int Source # peekElemOff :: Ptr Word -> Int -> IO Word Source # pokeElemOff :: Ptr Word -> Int -> Word -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Word Source # pokeByteOff :: Ptr b -> Int -> Word -> IO () Source # peek :: Ptr Word -> IO Word Source # poke :: Ptr Word -> Word -> IO () Source #
Storable Word8 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Word8 -> Int Source # alignment :: Word8 -> Int Source # peekElemOff :: Ptr Word8 -> Int -> IO Word8 Source # pokeElemOff :: Ptr Word8 -> Int -> Word8 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Word8 Source # pokeByteOff :: Ptr b -> Int -> Word8 -> IO () Source # peek :: Ptr Word8 -> IO Word8 Source # poke :: Ptr Word8 -> Word8 -> IO () Source #
Storable Word16 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Word16 -> Int Source # alignment :: Word16 -> Int Source # peekElemOff :: Ptr Word16 -> Int -> IO Word16 Source # pokeElemOff :: Ptr Word16 -> Int -> Word16 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Word16 Source # pokeByteOff :: Ptr b -> Int -> Word16 -> IO () Source # peek :: Ptr Word16 -> IO Word16 Source # poke :: Ptr Word16 -> Word16 -> IO () Source #
Storable Word32 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Word32 -> Int Source # alignment :: Word32 -> Int Source # peekElemOff :: Ptr Word32 -> Int -> IO Word32 Source # pokeElemOff :: Ptr Word32 -> Int -> Word32 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Word32 Source # pokeByteOff :: Ptr b -> Int -> Word32 -> IO () Source # peek :: Ptr Word32 -> IO Word32 Source # poke :: Ptr Word32 -> Word32 -> IO () Source #
Storable Word64 # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Word64 -> Int Source # alignment :: Word64 -> Int Source # peekElemOff :: Ptr Word64 -> Int -> IO Word64 Source # pokeElemOff :: Ptr Word64 -> Int -> Word64 -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Word64 Source # pokeByteOff :: Ptr b -> Int -> Word64 -> IO () Source # peek :: Ptr Word64 -> IO Word64 Source # poke :: Ptr Word64 -> Word64 -> IO () Source #
Storable () # | Since: base-4.9.0.0
Instance details Defined in Foreign.Storable Methods sizeOf :: () -> Int Source # alignment :: () -> Int Source # peekElemOff :: Ptr () -> Int -> IO () Source # pokeElemOff :: Ptr () -> Int -> () -> IO () Source # peekByteOff :: Ptr b -> Int -> IO () Source # pokeByteOff :: Ptr b -> Int -> () -> IO () Source # peek :: Ptr () -> IO () Source # poke :: Ptr () -> () -> IO () Source #
Storable Fingerprint # | Since: base-4.4.0.0
Instance details Defined in Foreign.Storable Methods sizeOf :: Fingerprint -> Int Source # alignment :: Fingerprint -> Int Source # peekElemOff :: Ptr Fingerprint -> Int -> IO Fingerprint Source # pokeElemOff :: Ptr Fingerprint -> Int -> Fingerprint -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Fingerprint Source # pokeByteOff :: Ptr b -> Int -> Fingerprint -> IO () Source # peek :: Ptr Fingerprint -> IO Fingerprint Source # poke :: Ptr Fingerprint -> Fingerprint -> IO () Source #
Storable IntPtr # |
Instance details Defined in Foreign.Ptr Methods sizeOf :: IntPtr -> Int Source # alignment :: IntPtr -> Int Source # peekElemOff :: Ptr IntPtr -> Int -> IO IntPtr Source # pokeElemOff :: Ptr IntPtr -> Int -> IntPtr -> IO () Source # peekByteOff :: Ptr b -> Int -> IO IntPtr Source # pokeByteOff :: Ptr b -> Int -> IntPtr -> IO () Source # peek :: Ptr IntPtr -> IO IntPtr Source # poke :: Ptr IntPtr -> IntPtr -> IO () Source #
Storable WordPtr # |
Instance details Defined in Foreign.Ptr Methods sizeOf :: WordPtr -> Int Source # alignment :: WordPtr -> Int Source # peekElemOff :: Ptr WordPtr -> Int -> IO WordPtr Source # pokeElemOff :: Ptr WordPtr -> Int -> WordPtr -> IO () Source # peekByteOff :: Ptr b -> Int -> IO WordPtr Source # pokeByteOff :: Ptr b -> Int -> WordPtr -> IO () Source # peek :: Ptr WordPtr -> IO WordPtr Source # poke :: Ptr WordPtr -> WordPtr -> IO () Source #
Storable CUIntMax # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CUIntMax -> Int Source # alignment :: CUIntMax -> Int Source # peekElemOff :: Ptr CUIntMax -> Int -> IO CUIntMax Source # pokeElemOff :: Ptr CUIntMax -> Int -> CUIntMax -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUIntMax Source # pokeByteOff :: Ptr b -> Int -> CUIntMax -> IO () Source # peek :: Ptr CUIntMax -> IO CUIntMax Source # poke :: Ptr CUIntMax -> CUIntMax -> IO () Source #
Storable CIntMax # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CIntMax -> Int Source # alignment :: CIntMax -> Int Source # peekElemOff :: Ptr CIntMax -> Int -> IO CIntMax Source # pokeElemOff :: Ptr CIntMax -> Int -> CIntMax -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CIntMax Source # pokeByteOff :: Ptr b -> Int -> CIntMax -> IO () Source # peek :: Ptr CIntMax -> IO CIntMax Source # poke :: Ptr CIntMax -> CIntMax -> IO () Source #
Storable CUIntPtr # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CUIntPtr -> Int Source # alignment :: CUIntPtr -> Int Source # peekElemOff :: Ptr CUIntPtr -> Int -> IO CUIntPtr Source # pokeElemOff :: Ptr CUIntPtr -> Int -> CUIntPtr -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUIntPtr Source # pokeByteOff :: Ptr b -> Int -> CUIntPtr -> IO () Source # peek :: Ptr CUIntPtr -> IO CUIntPtr Source # poke :: Ptr CUIntPtr -> CUIntPtr -> IO () Source #
Storable CIntPtr # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CIntPtr -> Int Source # alignment :: CIntPtr -> Int Source # peekElemOff :: Ptr CIntPtr -> Int -> IO CIntPtr Source # pokeElemOff :: Ptr CIntPtr -> Int -> CIntPtr -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CIntPtr Source # pokeByteOff :: Ptr b -> Int -> CIntPtr -> IO () Source # peek :: Ptr CIntPtr -> IO CIntPtr Source # poke :: Ptr CIntPtr -> CIntPtr -> IO () Source #
Storable CSUSeconds # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CSUSeconds -> Int Source # alignment :: CSUSeconds -> Int Source # peekElemOff :: Ptr CSUSeconds -> Int -> IO CSUSeconds Source # pokeElemOff :: Ptr CSUSeconds -> Int -> CSUSeconds -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CSUSeconds Source # pokeByteOff :: Ptr b -> Int -> CSUSeconds -> IO () Source # peek :: Ptr CSUSeconds -> IO CSUSeconds Source # poke :: Ptr CSUSeconds -> CSUSeconds -> IO () Source #
Storable CUSeconds # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CUSeconds -> Int Source # alignment :: CUSeconds -> Int Source # peekElemOff :: Ptr CUSeconds -> Int -> IO CUSeconds Source # pokeElemOff :: Ptr CUSeconds -> Int -> CUSeconds -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUSeconds Source # pokeByteOff :: Ptr b -> Int -> CUSeconds -> IO () Source # peek :: Ptr CUSeconds -> IO CUSeconds Source # poke :: Ptr CUSeconds -> CUSeconds -> IO () Source #
Storable CTime # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CTime -> Int Source # alignment :: CTime -> Int Source # peekElemOff :: Ptr CTime -> Int -> IO CTime Source # pokeElemOff :: Ptr CTime -> Int -> CTime -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CTime Source # pokeByteOff :: Ptr b -> Int -> CTime -> IO () Source # peek :: Ptr CTime -> IO CTime Source # poke :: Ptr CTime -> CTime -> IO () Source #
Storable CClock # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CClock -> Int Source # alignment :: CClock -> Int Source # peekElemOff :: Ptr CClock -> Int -> IO CClock Source # pokeElemOff :: Ptr CClock -> Int -> CClock -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CClock Source # pokeByteOff :: Ptr b -> Int -> CClock -> IO () Source # peek :: Ptr CClock -> IO CClock Source # poke :: Ptr CClock -> CClock -> IO () Source #
Storable CSigAtomic # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CSigAtomic -> Int Source # alignment :: CSigAtomic -> Int Source # peekElemOff :: Ptr CSigAtomic -> Int -> IO CSigAtomic Source # pokeElemOff :: Ptr CSigAtomic -> Int -> CSigAtomic -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CSigAtomic Source # pokeByteOff :: Ptr b -> Int -> CSigAtomic -> IO () Source # peek :: Ptr CSigAtomic -> IO CSigAtomic Source # poke :: Ptr CSigAtomic -> CSigAtomic -> IO () Source #
Storable CWchar # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CWchar -> Int Source # alignment :: CWchar -> Int Source # peekElemOff :: Ptr CWchar -> Int -> IO CWchar Source # pokeElemOff :: Ptr CWchar -> Int -> CWchar -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CWchar Source # pokeByteOff :: Ptr b -> Int -> CWchar -> IO () Source # peek :: Ptr CWchar -> IO CWchar Source # poke :: Ptr CWchar -> CWchar -> IO () Source #
Storable CSize # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CSize -> Int Source # alignment :: CSize -> Int Source # peekElemOff :: Ptr CSize -> Int -> IO CSize Source # pokeElemOff :: Ptr CSize -> Int -> CSize -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CSize Source # pokeByteOff :: Ptr b -> Int -> CSize -> IO () Source # peek :: Ptr CSize -> IO CSize Source # poke :: Ptr CSize -> CSize -> IO () Source #
Storable CPtrdiff # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CPtrdiff -> Int Source # alignment :: CPtrdiff -> Int Source # peekElemOff :: Ptr CPtrdiff -> Int -> IO CPtrdiff Source # pokeElemOff :: Ptr CPtrdiff -> Int -> CPtrdiff -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CPtrdiff Source # pokeByteOff :: Ptr b -> Int -> CPtrdiff -> IO () Source # peek :: Ptr CPtrdiff -> IO CPtrdiff Source # poke :: Ptr CPtrdiff -> CPtrdiff -> IO () Source #
Storable CDouble # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CDouble -> Int Source # alignment :: CDouble -> Int Source # peekElemOff :: Ptr CDouble -> Int -> IO CDouble Source # pokeElemOff :: Ptr CDouble -> Int -> CDouble -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CDouble Source # pokeByteOff :: Ptr b -> Int -> CDouble -> IO () Source # peek :: Ptr CDouble -> IO CDouble Source # poke :: Ptr CDouble -> CDouble -> IO () Source #
Storable CFloat # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CFloat -> Int Source # alignment :: CFloat -> Int Source # peekElemOff :: Ptr CFloat -> Int -> IO CFloat Source # pokeElemOff :: Ptr CFloat -> Int -> CFloat -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CFloat Source # pokeByteOff :: Ptr b -> Int -> CFloat -> IO () Source # peek :: Ptr CFloat -> IO CFloat Source # poke :: Ptr CFloat -> CFloat -> IO () Source #
Storable CBool # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CBool -> Int Source # alignment :: CBool -> Int Source # peekElemOff :: Ptr CBool -> Int -> IO CBool Source # pokeElemOff :: Ptr CBool -> Int -> CBool -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CBool Source # pokeByteOff :: Ptr b -> Int -> CBool -> IO () Source # peek :: Ptr CBool -> IO CBool Source # poke :: Ptr CBool -> CBool -> IO () Source #
Storable CULLong # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CULLong -> Int Source # alignment :: CULLong -> Int Source # peekElemOff :: Ptr CULLong -> Int -> IO CULLong Source # pokeElemOff :: Ptr CULLong -> Int -> CULLong -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CULLong Source # pokeByteOff :: Ptr b -> Int -> CULLong -> IO () Source # peek :: Ptr CULLong -> IO CULLong Source # poke :: Ptr CULLong -> CULLong -> IO () Source #
Storable CLLong # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CLLong -> Int Source # alignment :: CLLong -> Int Source # peekElemOff :: Ptr CLLong -> Int -> IO CLLong Source # pokeElemOff :: Ptr CLLong -> Int -> CLLong -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CLLong Source # pokeByteOff :: Ptr b -> Int -> CLLong -> IO () Source # peek :: Ptr CLLong -> IO CLLong Source # poke :: Ptr CLLong -> CLLong -> IO () Source #
Storable CULong # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CULong -> Int Source # alignment :: CULong -> Int Source # peekElemOff :: Ptr CULong -> Int -> IO CULong Source # pokeElemOff :: Ptr CULong -> Int -> CULong -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CULong Source # pokeByteOff :: Ptr b -> Int -> CULong -> IO () Source # peek :: Ptr CULong -> IO CULong Source # poke :: Ptr CULong -> CULong -> IO () Source #
Storable CLong # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CLong -> Int Source # alignment :: CLong -> Int Source # peekElemOff :: Ptr CLong -> Int -> IO CLong Source # pokeElemOff :: Ptr CLong -> Int -> CLong -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CLong Source # pokeByteOff :: Ptr b -> Int -> CLong -> IO () Source # peek :: Ptr CLong -> IO CLong Source # poke :: Ptr CLong -> CLong -> IO () Source #
Storable CUInt # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CUInt -> Int Source # alignment :: CUInt -> Int Source # peekElemOff :: Ptr CUInt -> Int -> IO CUInt Source # pokeElemOff :: Ptr CUInt -> Int -> CUInt -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUInt Source # pokeByteOff :: Ptr b -> Int -> CUInt -> IO () Source # peek :: Ptr CUInt -> IO CUInt Source # poke :: Ptr CUInt -> CUInt -> IO () Source #
Storable CInt # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CInt -> Int Source # alignment :: CInt -> Int Source # peekElemOff :: Ptr CInt -> Int -> IO CInt Source # pokeElemOff :: Ptr CInt -> Int -> CInt -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CInt Source # pokeByteOff :: Ptr b -> Int -> CInt -> IO () Source # peek :: Ptr CInt -> IO CInt Source # poke :: Ptr CInt -> CInt -> IO () Source #
Storable CUShort # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CUShort -> Int Source # alignment :: CUShort -> Int Source # peekElemOff :: Ptr CUShort -> Int -> IO CUShort Source # pokeElemOff :: Ptr CUShort -> Int -> CUShort -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUShort Source # pokeByteOff :: Ptr b -> Int -> CUShort -> IO () Source # peek :: Ptr CUShort -> IO CUShort Source # poke :: Ptr CUShort -> CUShort -> IO () Source #
Storable CShort # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CShort -> Int Source # alignment :: CShort -> Int Source # peekElemOff :: Ptr CShort -> Int -> IO CShort Source # pokeElemOff :: Ptr CShort -> Int -> CShort -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CShort Source # pokeByteOff :: Ptr b -> Int -> CShort -> IO () Source # peek :: Ptr CShort -> IO CShort Source # poke :: Ptr CShort -> CShort -> IO () Source #
Storable CUChar # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CUChar -> Int Source # alignment :: CUChar -> Int Source # peekElemOff :: Ptr CUChar -> Int -> IO CUChar Source # pokeElemOff :: Ptr CUChar -> Int -> CUChar -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUChar Source # pokeByteOff :: Ptr b -> Int -> CUChar -> IO () Source # peek :: Ptr CUChar -> IO CUChar Source # poke :: Ptr CUChar -> CUChar -> IO () Source #
Storable CSChar # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CSChar -> Int Source # alignment :: CSChar -> Int Source # peekElemOff :: Ptr CSChar -> Int -> IO CSChar Source # pokeElemOff :: Ptr CSChar -> Int -> CSChar -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CSChar Source # pokeByteOff :: Ptr b -> Int -> CSChar -> IO () Source # peek :: Ptr CSChar -> IO CSChar Source # poke :: Ptr CSChar -> CSChar -> IO () Source #
Storable CChar # |
Instance details Defined in Foreign.C.Types Methods sizeOf :: CChar -> Int Source # alignment :: CChar -> Int Source # peekElemOff :: Ptr CChar -> Int -> IO CChar Source # pokeElemOff :: Ptr CChar -> Int -> CChar -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CChar Source # pokeByteOff :: Ptr b -> Int -> CChar -> IO () Source # peek :: Ptr CChar -> IO CChar Source # poke :: Ptr CChar -> CChar -> IO () Source #
Storable Fd # |
Instance details Defined in System.Posix.Types Methods sizeOf :: Fd -> Int Source # alignment :: Fd -> Int Source # peekElemOff :: Ptr Fd -> Int -> IO Fd Source # pokeElemOff :: Ptr Fd -> Int -> Fd -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Fd Source # pokeByteOff :: Ptr b -> Int -> Fd -> IO () Source # peek :: Ptr Fd -> IO Fd Source # poke :: Ptr Fd -> Fd -> IO () Source #
Storable CTimer # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CTimer -> Int Source # alignment :: CTimer -> Int Source # peekElemOff :: Ptr CTimer -> Int -> IO CTimer Source # pokeElemOff :: Ptr CTimer -> Int -> CTimer -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CTimer Source # pokeByteOff :: Ptr b -> Int -> CTimer -> IO () Source # peek :: Ptr CTimer -> IO CTimer Source # poke :: Ptr CTimer -> CTimer -> IO () Source #
Storable CKey # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CKey -> Int Source # alignment :: CKey -> Int Source # peekElemOff :: Ptr CKey -> Int -> IO CKey Source # pokeElemOff :: Ptr CKey -> Int -> CKey -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CKey Source # pokeByteOff :: Ptr b -> Int -> CKey -> IO () Source # peek :: Ptr CKey -> IO CKey Source # poke :: Ptr CKey -> CKey -> IO () Source #
Storable CId # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CId -> Int Source # alignment :: CId -> Int Source # peekElemOff :: Ptr CId -> Int -> IO CId Source # pokeElemOff :: Ptr CId -> Int -> CId -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CId Source # pokeByteOff :: Ptr b -> Int -> CId -> IO () Source # peek :: Ptr CId -> IO CId Source # poke :: Ptr CId -> CId -> IO () Source #
Storable CFsFilCnt # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CFsFilCnt -> Int Source # alignment :: CFsFilCnt -> Int Source # peekElemOff :: Ptr CFsFilCnt -> Int -> IO CFsFilCnt Source # pokeElemOff :: Ptr CFsFilCnt -> Int -> CFsFilCnt -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CFsFilCnt Source # pokeByteOff :: Ptr b -> Int -> CFsFilCnt -> IO () Source # peek :: Ptr CFsFilCnt -> IO CFsFilCnt Source # poke :: Ptr CFsFilCnt -> CFsFilCnt -> IO () Source #
Storable CFsBlkCnt # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CFsBlkCnt -> Int Source # alignment :: CFsBlkCnt -> Int Source # peekElemOff :: Ptr CFsBlkCnt -> Int -> IO CFsBlkCnt Source # pokeElemOff :: Ptr CFsBlkCnt -> Int -> CFsBlkCnt -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CFsBlkCnt Source # pokeByteOff :: Ptr b -> Int -> CFsBlkCnt -> IO () Source # peek :: Ptr CFsBlkCnt -> IO CFsBlkCnt Source # poke :: Ptr CFsBlkCnt -> CFsBlkCnt -> IO () Source #
Storable CClockId # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CClockId -> Int Source # alignment :: CClockId -> Int Source # peekElemOff :: Ptr CClockId -> Int -> IO CClockId Source # pokeElemOff :: Ptr CClockId -> Int -> CClockId -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CClockId Source # pokeByteOff :: Ptr b -> Int -> CClockId -> IO () Source # peek :: Ptr CClockId -> IO CClockId Source # poke :: Ptr CClockId -> CClockId -> IO () Source #
Storable CBlkCnt # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CBlkCnt -> Int Source # alignment :: CBlkCnt -> Int Source # peekElemOff :: Ptr CBlkCnt -> Int -> IO CBlkCnt Source # pokeElemOff :: Ptr CBlkCnt -> Int -> CBlkCnt -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CBlkCnt Source # pokeByteOff :: Ptr b -> Int -> CBlkCnt -> IO () Source # peek :: Ptr CBlkCnt -> IO CBlkCnt Source # poke :: Ptr CBlkCnt -> CBlkCnt -> IO () Source #
Storable CBlkSize # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CBlkSize -> Int Source # alignment :: CBlkSize -> Int Source # peekElemOff :: Ptr CBlkSize -> Int -> IO CBlkSize Source # pokeElemOff :: Ptr CBlkSize -> Int -> CBlkSize -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CBlkSize Source # pokeByteOff :: Ptr b -> Int -> CBlkSize -> IO () Source # peek :: Ptr CBlkSize -> IO CBlkSize Source # poke :: Ptr CBlkSize -> CBlkSize -> IO () Source #
Storable CRLim # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CRLim -> Int Source # alignment :: CRLim -> Int Source # peekElemOff :: Ptr CRLim -> Int -> IO CRLim Source # pokeElemOff :: Ptr CRLim -> Int -> CRLim -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CRLim Source # pokeByteOff :: Ptr b -> Int -> CRLim -> IO () Source # peek :: Ptr CRLim -> IO CRLim Source # poke :: Ptr CRLim -> CRLim -> IO () Source #
Storable CTcflag # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CTcflag -> Int Source # alignment :: CTcflag -> Int Source # peekElemOff :: Ptr CTcflag -> Int -> IO CTcflag Source # pokeElemOff :: Ptr CTcflag -> Int -> CTcflag -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CTcflag Source # pokeByteOff :: Ptr b -> Int -> CTcflag -> IO () Source # peek :: Ptr CTcflag -> IO CTcflag Source # poke :: Ptr CTcflag -> CTcflag -> IO () Source #
Storable CSpeed # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CSpeed -> Int Source # alignment :: CSpeed -> Int Source # peekElemOff :: Ptr CSpeed -> Int -> IO CSpeed Source # pokeElemOff :: Ptr CSpeed -> Int -> CSpeed -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CSpeed Source # pokeByteOff :: Ptr b -> Int -> CSpeed -> IO () Source # peek :: Ptr CSpeed -> IO CSpeed Source # poke :: Ptr CSpeed -> CSpeed -> IO () Source #
Storable CCc # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CCc -> Int Source # alignment :: CCc -> Int Source # peekElemOff :: Ptr CCc -> Int -> IO CCc Source # pokeElemOff :: Ptr CCc -> Int -> CCc -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CCc Source # pokeByteOff :: Ptr b -> Int -> CCc -> IO () Source # peek :: Ptr CCc -> IO CCc Source # poke :: Ptr CCc -> CCc -> IO () Source #
Storable CUid # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CUid -> Int Source # alignment :: CUid -> Int Source # peekElemOff :: Ptr CUid -> Int -> IO CUid Source # pokeElemOff :: Ptr CUid -> Int -> CUid -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CUid Source # pokeByteOff :: Ptr b -> Int -> CUid -> IO () Source # peek :: Ptr CUid -> IO CUid Source # poke :: Ptr CUid -> CUid -> IO () Source #
Storable CNlink # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CNlink -> Int Source # alignment :: CNlink -> Int Source # peekElemOff :: Ptr CNlink -> Int -> IO CNlink Source # pokeElemOff :: Ptr CNlink -> Int -> CNlink -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CNlink Source # pokeByteOff :: Ptr b -> Int -> CNlink -> IO () Source # peek :: Ptr CNlink -> IO CNlink Source # poke :: Ptr CNlink -> CNlink -> IO () Source #
Storable CGid # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CGid -> Int Source # alignment :: CGid -> Int Source # peekElemOff :: Ptr CGid -> Int -> IO CGid Source # pokeElemOff :: Ptr CGid -> Int -> CGid -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CGid Source # pokeByteOff :: Ptr b -> Int -> CGid -> IO () Source # peek :: Ptr CGid -> IO CGid Source # poke :: Ptr CGid -> CGid -> IO () Source #
Storable CSsize # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CSsize -> Int Source # alignment :: CSsize -> Int Source # peekElemOff :: Ptr CSsize -> Int -> IO CSsize Source # pokeElemOff :: Ptr CSsize -> Int -> CSsize -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CSsize Source # pokeByteOff :: Ptr b -> Int -> CSsize -> IO () Source # peek :: Ptr CSsize -> IO CSsize Source # poke :: Ptr CSsize -> CSsize -> IO () Source #
Storable CPid # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CPid -> Int Source # alignment :: CPid -> Int Source # peekElemOff :: Ptr CPid -> Int -> IO CPid Source # pokeElemOff :: Ptr CPid -> Int -> CPid -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CPid Source # pokeByteOff :: Ptr b -> Int -> CPid -> IO () Source # peek :: Ptr CPid -> IO CPid Source # poke :: Ptr CPid -> CPid -> IO () Source #
Storable COff # |
Instance details Defined in System.Posix.Types Methods sizeOf :: COff -> Int Source # alignment :: COff -> Int Source # peekElemOff :: Ptr COff -> Int -> IO COff Source # pokeElemOff :: Ptr COff -> Int -> COff -> IO () Source # peekByteOff :: Ptr b -> Int -> IO COff Source # pokeByteOff :: Ptr b -> Int -> COff -> IO () Source # peek :: Ptr COff -> IO COff Source # poke :: Ptr COff -> COff -> IO () Source #
Storable CMode # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CMode -> Int Source # alignment :: CMode -> Int Source # peekElemOff :: Ptr CMode -> Int -> IO CMode Source # pokeElemOff :: Ptr CMode -> Int -> CMode -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CMode Source # pokeByteOff :: Ptr b -> Int -> CMode -> IO () Source # peek :: Ptr CMode -> IO CMode Source # poke :: Ptr CMode -> CMode -> IO () Source #
Storable CIno # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CIno -> Int Source # alignment :: CIno -> Int Source # peekElemOff :: Ptr CIno -> Int -> IO CIno Source # pokeElemOff :: Ptr CIno -> Int -> CIno -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CIno Source # pokeByteOff :: Ptr b -> Int -> CIno -> IO () Source # peek :: Ptr CIno -> IO CIno Source # poke :: Ptr CIno -> CIno -> IO () Source #
Storable CDev # |
Instance details Defined in System.Posix.Types Methods sizeOf :: CDev -> Int Source # alignment :: CDev -> Int Source # peekElemOff :: Ptr CDev -> Int -> IO CDev Source # pokeElemOff :: Ptr CDev -> Int -> CDev -> IO () Source # peekByteOff :: Ptr b -> Int -> IO CDev Source # pokeByteOff :: Ptr b -> Int -> CDev -> IO () Source # peek :: Ptr CDev -> IO CDev Source # poke :: Ptr CDev -> CDev -> IO () Source #
(Storable a, Integral a) => Storable (Ratio a) # | Since: base-4.8.0.0
Instance details Defined in Foreign.Storable Methods sizeOf :: Ratio a -> Int Source # alignment :: Ratio a -> Int Source # peekElemOff :: Ptr (Ratio a) -> Int -> IO (Ratio a) Source # pokeElemOff :: Ptr (Ratio a) -> Int -> Ratio a -> IO () Source # peekByteOff :: Ptr b -> Int -> IO (Ratio a) Source # pokeByteOff :: Ptr b -> Int -> Ratio a -> IO () Source # peek :: Ptr (Ratio a) -> IO (Ratio a) Source # poke :: Ptr (Ratio a) -> Ratio a -> IO () Source #
Storable (StablePtr a) # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: StablePtr a -> Int Source # alignment :: StablePtr a -> Int Source # peekElemOff :: Ptr (StablePtr a) -> Int -> IO (StablePtr a) Source # pokeElemOff :: Ptr (StablePtr a) -> Int -> StablePtr a -> IO () Source # peekByteOff :: Ptr b -> Int -> IO (StablePtr a) Source # pokeByteOff :: Ptr b -> Int -> StablePtr a -> IO () Source # peek :: Ptr (StablePtr a) -> IO (StablePtr a) Source # poke :: Ptr (StablePtr a) -> StablePtr a -> IO () Source #
Storable (Ptr a) # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: Ptr a -> Int Source # alignment :: Ptr a -> Int Source # peekElemOff :: Ptr (Ptr a) -> Int -> IO (Ptr a) Source # pokeElemOff :: Ptr (Ptr a) -> Int -> Ptr a -> IO () Source # peekByteOff :: Ptr b -> Int -> IO (Ptr a) Source # pokeByteOff :: Ptr b -> Int -> Ptr a -> IO () Source # peek :: Ptr (Ptr a) -> IO (Ptr a) Source # poke :: Ptr (Ptr a) -> Ptr a -> IO () Source #
Storable (FunPtr a) # | Since: base-2.1
Instance details Defined in Foreign.Storable Methods sizeOf :: FunPtr a -> Int Source # alignment :: FunPtr a -> Int Source # peekElemOff :: Ptr (FunPtr a) -> Int -> IO (FunPtr a) Source # pokeElemOff :: Ptr (FunPtr a) -> Int -> FunPtr a -> IO () Source # peekByteOff :: Ptr b -> Int -> IO (FunPtr a) Source # pokeByteOff :: Ptr b -> Int -> FunPtr a -> IO () Source # peek :: Ptr (FunPtr a) -> IO (FunPtr a) Source # poke :: Ptr (FunPtr a) -> FunPtr a -> IO () Source #
Storable a => Storable (Identity a) # | Since: base-4.9.0.0
Instance details Defined in Data.Functor.Identity Methods sizeOf :: Identity a -> Int Source # alignment :: Identity a -> Int Source # peekElemOff :: Ptr (Identity a) -> Int -> IO (Identity a) Source # pokeElemOff :: Ptr (Identity a) -> Int -> Identity a -> IO () Source # peekByteOff :: Ptr b -> Int -> IO (Identity a) Source # pokeByteOff :: Ptr b -> Int -> Identity a -> IO () Source # peek :: Ptr (Identity a) -> IO (Identity a) Source # poke :: Ptr (Identity a) -> Identity a -> IO () Source #
Storable a => Storable (Complex a) # | Since: base-4.8.0.0
Instance details Defined in Data.Complex Methods sizeOf :: Complex a -> Int Source # alignment :: Complex a -> Int Source # peekElemOff :: Ptr (Complex a) -> Int -> IO (Complex a) Source # pokeElemOff :: Ptr (Complex a) -> Int -> Complex a -> IO () Source # peekByteOff :: Ptr b -> Int -> IO (Complex a) Source # pokeByteOff :: Ptr b -> Int -> Complex a -> IO () Source # peek :: Ptr (Complex a) -> IO (Complex a) Source # poke :: Ptr (Complex a) -> Complex a -> IO () Source #
Storable a => Storable (Const a b) # | Since: base-4.9.0.0
Instance details Defined in Data.Functor.Const Methods sizeOf :: Const a b -> Int Source # alignment :: Const a b -> Int Source # peekElemOff :: Ptr (Const a b) -> Int -> IO (Const a b) Source # pokeElemOff :: Ptr (Const a b) -> Int -> Const a b -> IO () Source # peekByteOff :: Ptr b0 -> Int -> IO (Const a b) Source # pokeByteOff :: Ptr b0 -> Int -> Const a b -> IO () Source # peek :: Ptr (Const a b) -> IO (Const a b) Source # poke :: Ptr (Const a b) -> Const a b -> IO () Source #