package mirage-types

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Memory allocation interface.

type buf

Type of a C buffer (usually Cstruct)

type t =
  (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t

Type of memory blocks.

val get : int -> t

get n allocates and returns a memory block of n pages. If there is not enough memory, the unikernel will terminate.

val get_order : int -> t

get_order i is get (1 lsl i).

val pages : int -> t list

pages n allocates a memory block of n pages and return the the list of pages allocated.

val pages_order : int -> t list

pages_order i is pages (1 lsl i).

val length : t -> int

length t is the size of t, in bytes.

val to_cstruct : t -> buf

val to_string : t -> string

val to_pages : t -> t list

to_pages t is a list of size memory blocks of one page each, where size is the size of t in pages.

val string_blit : string -> int -> t -> int -> int -> unit

string_blit src srcoff dst dstoff len copies len bytes from string src, starting at byte number srcoff, to memory block dst, starting at byte number dstoff.

val blit : t -> t -> unit

blit t1 t2 is the same as Bigarray.Array1.blit.

val round_to_page_size : int -> int

round_to_page_size n returns the number of bytes that will be allocated for storing n bytes in memory