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sequence.bigarray

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Simon Cruanes 2014-10-30 01:33:43 +01:00
parent 15a0b9dd30
commit d95495dc12
4 changed files with 98 additions and 2 deletions
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8
.ocamlinit
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@ -1,5 +1,9 @@
#directory "_build";;
#load "sequence.cma";;
open Sequence.Infix;;
(* vim:syntax=ocaml
*)
#directory "_build/bigarray/";;
#load "bigarray.cma";;
(* vim:syntax=ocaml *)

13
_oasis
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@ -23,6 +23,10 @@ Flag invert
Description: build sequence.invert (requires Delimcc)
Default: false
Flag bigarray
Description: build sequence.bigarray (requires bigarray)
Default: true
Library "sequence"
Path: .
Modules: Sequence
@ -36,6 +40,15 @@ Library "invert"
FindlibParent: sequence
BuildDepends: sequence,delimcc
Library "bigarray"
Path: bigarray
Build$: flag(bigarray)
Install$: flag(bigarray)
Modules: SequenceBigarray
FindlibName: bigarray
FindlibParent: sequence
BuildDepends: sequence,bigarray
Document sequence
Title: Sequence docs
Type: ocamlbuild (0.3)

45
bigarray/sequenceBigarray.ml Normal file
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@ -0,0 +1,45 @@
(*
Copyright (c) 2014, Simon Cruanes
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other materials provided with
the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*)
(** {1 Interface and Helpers for bigarrays} *)
let of_bigarray b yield =
let len = Bigarray.Array1.dim b in
for i=0 to len-1 do
yield b.{i}
done
let mmap filename =
fun yield ->
let fd = Unix.openfile filename [Unix.O_RDONLY] 0 in
let len = Unix.lseek fd 0 Unix.SEEK_END in
let _ = Unix.lseek fd 0 Unix.SEEK_SET in
let b = Bigarray.Array1.map_file fd Bigarray.Char Bigarray.C_layout false len in
try
of_bigarray b yield;
Unix.close fd
with e ->
Unix.close fd;
raise e

34
bigarray/sequenceBigarray.mli Normal file
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@ -0,0 +1,34 @@
(*
Copyright (c) 2014, Simon Cruanes
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other materials provided with
the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*)
(** {1 Interface and Helpers for bigarrays}
@since NEXT_RELEASE *)
val of_bigarray : ('a, _, _) Bigarray.Array1.t -> 'a Sequence.t
(** Iterate on the elements of a 1-D array *)
val mmap : string -> char Sequence.t
(** Map the file into memory, and read the characters. *)