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7f918cf1 CE |
1 | (* Copyright (C) 2009 Matthew Fluet. |
2 | * Copyright (C) 1999-2005 Henry Cejtin, Matthew Fluet, Suresh | |
3 | * Jagannathan, and Stephen Weeks. | |
4 | * | |
5 | * MLton is released under a BSD-style license. | |
6 | * See the file MLton-LICENSE for details. | |
7 | *) | |
8 | ||
9 | structure Pid: PID = | |
10 | struct | |
11 | local open Posix.Process | |
12 | in | |
13 | type t = pid | |
14 | val toString = SysWord.fmt StringCvt.DEC o pidToWord | |
15 | fun fromString s = | |
16 | Option.map(Pervasive.Int.fromString s, wordToPid o SysWord.fromInt) | |
17 | end | |
18 | ||
19 | val layout = Layout.str o toString | |
20 | ||
21 | local open Posix.ProcEnv | |
22 | in | |
23 | val current = getpid | |
24 | val parent = getppid | |
25 | end | |
26 | ||
27 | val equals = op = | |
28 | end |