mallocForeignPtr
Allocate some memory and return a ForeignPtr to it. The memory will be released automatically when the ForeignPtr is discarded.
mallocForeignPtr is equivalent to
> do { p <- malloc; newForeignPtr finalizerFree p }
although it may be implemented differently internally: you may not assume that the memory returned by mallocForeignPtr has been allocated with Foreign.Marshal.Alloc.malloc.
GHC notes: mallocForeignPtr has a heavily optimised implementation in GHC. It uses pinned memory in the garbage collected heap, so the ForeignPtr does not require a finalizer to free the memory. Use of mallocForeignPtr and associated functions is strongly recommended in preference to newForeignPtr with a finalizer.
This function is similar to Foreign.Marshal.Array.mallocArray, but yields a memory area that has a finalizer attached that releases the memory area. As with mallocForeignPtr, it is not guaranteed that the block of memory was allocated by Foreign.Marshal.Alloc.malloc.
This function is similar to Foreign.Marshal.Array.mallocArray0, but yields a memory area that has a finalizer attached that releases the memory area. As with mallocForeignPtr, it is not guaranteed that the block of memory was allocated by Foreign.Marshal.Alloc.malloc.
This function is similar to mallocForeignPtr, except that the size of the memory required is given explicitly as a number of bytes.