Plasma GitLab Archive
Projects Blog Knowledge

Module Netmcore_matrix

module Netmcore_matrix: sig .. end

Shared 2-dimensional arrays (matrices)

type ('e, 'h) sarray2 

Arrays where the elements have type 'e and the header has type 'h

type ('e, 'h) sarray2_descr 

The marshallable descriptor of a shared matrix

val create : Netmcore.res_id ->
int -> 'e array array -> 'h -> ('e, 'h) sarray2

create pool_id n2 a h: Creates a matrix by deeply copying a normal array a and using the copy of h as header. In n2 one has to pass the second dimension.

val make : Netmcore.res_id -> int -> int -> 'e -> 'h -> ('e, 'h) sarray2

make pool_id n1 n2 x h: Creates a matrix of the passed number of elements (n1 * n2), copies the element x, and initializes each element of the new array with the single copy of x. The value h is copied and used as header.

val init : Netmcore.res_id ->
int -> int -> (int -> int -> 'e) -> 'h -> ('e, 'h) sarray2

init pool_id n1 n2 f h: Creates a matrix of the passed number of elements (n1 * n2), and for getting the element at position k the function f k is run, and the copy of the result is written to the position. The header is set to the copy of h.

val set : ('e, 'a) sarray2 -> int -> int -> 'e -> unit

set sa k1 k2 x: Sets the (k1,k2)-th element of the matrix sa to a deep copy of x.

val get_ro : ('e, 'a) sarray2 -> int -> int -> 'e

get_ro sa k1 k2: Gets the (k1,k2)-th element of the matrix sa. Note that there is no guarantee that this value still exists if it is returned, and a parallely running set changes this element. If such values are accessed the program may crash!

val get_p : ('e, 'b) sarray2 -> int -> int -> ('e -> 'a) -> 'a

get_p sa k1 k2 f: Gets the (k1,k2)-th element of the matrix sa and call f with this element, and returns the result of f. During the execution of f the requested element cannot be garbage collected.

val get_c : ('e, 'a) sarray2 -> int -> int -> 'e

get_c sa k1 k2: Gets a copy of the (k1,k2)-th element of the matrix sæ

val dim : ('a, 'b) sarray2 -> int * int

Returns the dimenstions

val header : ('a, 'h) sarray2 -> 'h

Returns the header

val deref : ('e, 'a) sarray2 -> 'e array array

Returns the raw array in shared memory for unprotected access

val heap : ('a, 'b) sarray2 -> Stdlib.Obj.t Netmcore_heap.heap

Return the backing heap structure

val descr_of_sarray2 : ('e, 'h) sarray2 -> ('e, 'h) sarray2_descr

Returns the descriptor

val sarray2_of_descr : Netmcore.res_id ->
('e, 'h) sarray2_descr -> ('e, 'h) sarray2

Look up the matrix for this descriptor

This web site is published by Informatikbüro Gerd Stolpmann
Powered by Caml