author | wenzelm |
Mon, 23 Jul 2007 22:18:05 +0200 | |
changeset 23947 | 5e396bcf749e |
parent 23943 | 1b5f77bc146a |
child 23966 | 25f34ff5eedf |
permissions | -rw-r--r-- |
23943 | 1 |
(* Title: Pure/ML-Systems/polyml-5.0.ML |
2 |
ID: $Id$ |
|
3 |
||
4 |
Compatibility wrapper for Poly/ML 5.1. |
|
5 |
*) |
|
6 |
||
7 |
use "ML-Systems/polyml.ML"; |
|
8 |
||
9 |
val pointer_eq = PolyML.pointerEq; |
|
10 |
||
11 |
||
12 |
(* improved versions of use_text/file *) |
|
13 |
||
14 |
fun use_text name (print, err) verbose txt = |
|
15 |
let |
|
16 |
val in_buffer = ref (explode txt); |
|
17 |
val out_buffer = ref ([]: string list); |
|
18 |
fun output () = implode (rev (case ! out_buffer of "\n" :: cs => cs | cs => cs)); |
|
19 |
||
20 |
val line_no = ref 1; |
|
21 |
fun line () = ! line_no; |
|
22 |
fun get () = |
|
23 |
(case ! in_buffer of |
|
24 |
[] => "" |
|
25 |
| c :: cs => (in_buffer := cs; if c = "\n" then line_no := ! line_no + 1 else (); c)); |
|
26 |
fun put s = out_buffer := s :: ! out_buffer; |
|
27 |
||
28 |
fun exec () = |
|
29 |
(case ! in_buffer of |
|
30 |
[] => () |
|
31 |
| _ => (PolyML.compilerEx (get, put, line, name) (); exec ())); |
|
32 |
in |
|
33 |
exec () handle exn => (err (output ()); raise exn); |
|
34 |
if verbose then print (output ()) else () |
|
35 |
end; |
|
36 |
||
37 |
fun use_file output verbose name = |
|
38 |
let |
|
39 |
val instream = TextIO.openIn name; |
|
40 |
val txt = TextIO.inputAll instream before TextIO.closeIn instream; |
|
41 |
in use_text name output verbose txt end; |
|
23947
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
42 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
43 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
44 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
45 |
(** multithreading **) |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
46 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
47 |
open Thread; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
48 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
49 |
local |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
50 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
51 |
datatype 'a result = |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
52 |
Result of 'a | |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
53 |
Exn of exn; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
54 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
55 |
fun capture f x = Result (f x) handle e => Exn e; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
56 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
57 |
fun release (Result y) = y |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
58 |
| release (Exn e) = raise e; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
59 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
60 |
fun message s = |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
61 |
(TextIO.output (TextIO.stdErr, (">>> " ^ s ^ "\n")); TextIO.flushOut TextIO.stdErr); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
62 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
63 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
64 |
val critical_lock = Mutex.mutex (); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
65 |
val critical_thread = ref (NONE: Thread.thread option); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
66 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
67 |
in |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
68 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
69 |
(* critical section -- may be nested within the same thread *) |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
70 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
71 |
fun self_critical () = |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
72 |
(case ! critical_thread of |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
73 |
NONE => false |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
74 |
| SOME id => Thread.equal (id, Thread.self ())); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
75 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
76 |
fun CRITICAL e = |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
77 |
if self_critical () then e () |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
78 |
else |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
79 |
let |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
80 |
val _ = |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
81 |
if Mutex.trylock critical_lock then () |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
82 |
else |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
83 |
(message "Waiting for critical lock"; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
84 |
Mutex.lock critical_lock; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
85 |
message "Obtained critical lock"); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
86 |
val _ = critical_thread := SOME (Thread.self ()); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
87 |
val res = capture e (); |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
88 |
val _ = critical_thread := NONE; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
89 |
val _ = Mutex.unlock critical_lock; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
90 |
in release res end; |
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
91 |
|
5e396bcf749e
added proper implementation of self_critical, CRITICAL;
wenzelm
parents:
23943
diff
changeset
|
92 |
end; |