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7f918cf1 CE |
1 | (* Copyright (C) 1999-2005 Henry Cejtin, Matthew Fluet, Suresh |
2 | * Jagannathan, and Stephen Weeks. | |
3 | * Copyright (C) 1997-2000 NEC Research Institute. | |
4 | * | |
5 | * MLton is released under a BSD-style license. | |
6 | * See the file MLton-LICENSE for details. | |
7 | *) | |
8 | ||
9 | signature MULTI_STRUCTS = | |
10 | sig | |
11 | include SSA_TREE | |
12 | end | |
13 | ||
14 | signature MULTI = | |
15 | sig | |
16 | include MULTI_STRUCTS | |
17 | ||
18 | val multi: Program.t -> | |
19 | {(* Program has an occurence of Thread_switchTo. *) | |
20 | usesThreadsOrConts: bool, | |
21 | (* usesThreadsOrConts == true | |
22 | * and the func directly or indirectly invokes | |
23 | * Thread_copyCurrent. | |
24 | *) | |
25 | funcDoesThreadCopyCurrent: Func.t -> bool, | |
26 | (* usesThreadsOrConts == true | |
27 | * and the func may be called by two | |
28 | * different threads during some run of the | |
29 | * program. | |
30 | *) | |
31 | funcIsMultiThreaded: Func.t -> bool, | |
32 | (* The func may be called more than once | |
33 | * during some run of the program. | |
34 | *) | |
35 | funcIsMultiUsed: Func.t -> bool, | |
36 | (* usesThreadsOrConts == true | |
37 | * and the label's block's transfer is | |
38 | * either Runtime {prim, ...} | |
39 | * with prim = Thread_copyCurrent | |
40 | * or Call {func, ...} | |
41 | * with funcDoesThreadCopyCurrent(func) == true. | |
42 | *) | |
43 | labelDoesThreadCopyCurrent: Label.t -> bool, | |
44 | (* usesTheadsOrConts == true | |
45 | * and the label may be executed by two | |
46 | * different threads during some run of the | |
47 | * program. | |
48 | *) | |
49 | labelIsMultiThreaded: Label.t -> bool, | |
50 | (* The label may be executed more than once | |
51 | * during some run of the program. | |
52 | *) | |
53 | labelIsMultiUsed: Label.t -> bool, | |
54 | (* The var may be defined more than once | |
55 | * during some run of the program; | |
56 | * i.e., varIsMultiDefed(x) = | |
57 | * labelIsMultiUsed(label of x's def) | |
58 | * when x is defined in a block; | |
59 | *) | |
60 | varIsMultiDefed: Var.t -> bool} | |
61 | end |