License	BSD-style
Maintainer	Vincent Hanquez <vincent@snarc.org>
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

Foundation.Foreign

Description

Synopsis

Documentation

data FinalPtr a Source #

Create a pointer with an associated finalizer

Constructors

FinalPtr (Ptr a)
FinalForeign (ForeignPtr a)

Instances

Eq (FinalPtr a) Source #
Methods (==) :: FinalPtr a -> FinalPtr a -> Bool # (/=) :: FinalPtr a -> FinalPtr a -> Bool #
Ord (FinalPtr a) Source #
Methods compare :: FinalPtr a -> FinalPtr a -> Ordering # (<) :: FinalPtr a -> FinalPtr a -> Bool # (<=) :: FinalPtr a -> FinalPtr a -> Bool # (>) :: FinalPtr a -> FinalPtr a -> Bool # (>=) :: FinalPtr a -> FinalPtr a -> Bool # max :: FinalPtr a -> FinalPtr a -> FinalPtr a # min :: FinalPtr a -> FinalPtr a -> FinalPtr a #
Show (FinalPtr a) Source #
Methods showsPrec :: Int -> FinalPtr a -> ShowS # show :: FinalPtr a -> String # showList :: [FinalPtr a] -> ShowS #

finalPtrSameMemory :: FinalPtr a -> FinalPtr b -> Bool Source #

Check if 2 final ptr points on the same memory bits

it stand to reason that provided a final ptr that is still being referenced and thus have the memory still valid, if 2 final ptrs have the same address, they should be the same final ptr

castFinalPtr :: FinalPtr a -> FinalPtr b Source #

Cast a finalized pointer from type a to type b

toFinalPtr :: PrimMonad prim => Ptr a -> (Ptr a -> IO ()) -> prim (FinalPtr a) Source #

create a new FinalPtr from a Pointer

toFinalPtrForeign :: ForeignPtr a -> FinalPtr a Source #

Create a new FinalPtr from a ForeignPtr

withFinalPtr :: PrimMonad prim => FinalPtr p -> (Ptr p -> prim a) -> prim a Source #

Looks at the raw pointer inside a FinalPtr, making sure the data pointed by the pointer is not finalized during the call to f

withUnsafeFinalPtr :: PrimMonad prim => FinalPtr p -> (Ptr p -> prim a) -> a Source #

Unsafe version of withFinalPtr

withFinalPtrNoTouch :: FinalPtr p -> (Ptr p -> a) -> a Source #

foreignMem Source #

Arguments

:: PrimType ty
=> FinalPtr ty	the start pointer with a finalizer
-> CountOf ty	the number of elements (in elements, not bytes)
-> UArray ty

mutableForeignMem Source #

Arguments

:: (PrimMonad prim, PrimType ty)
=> FinalPtr ty	the start pointer with a finalizer
-> Int	the number of elements (in elements, not bytes)
-> prim (MUArray ty (PrimState prim))

module Foreign.C.Types