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1 | # -*-pyrex-*- |
2 | # |
3 | # $Id$ |
4 | # |
5 | # Timer selectors |
6 | # |
7 | # (c) 2005 Straylight/Edgeware |
8 | # |
9 | |
10 | #----- Licensing notice ----------------------------------------------------- |
11 | # |
12 | # This file is part of the Python interface to mLib. |
13 | # |
14 | # mLib/Python is free software; you can redistribute it and/or modify |
15 | # it under the terms of the GNU General Public License as published by |
16 | # the Free Software Foundation; either version 2 of the License, or |
17 | # (at your option) any later version. |
18 | # |
19 | # mLib/Python is distributed in the hope that it will be useful, |
20 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | # GNU General Public License for more details. |
23 | # |
24 | # You should have received a copy of the GNU General Public License |
25 | # along with mLib/Python; if not, write to the Free Software Foundation, |
26 | # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | |
28 | cdef double _tvtofloat(timeval *tv): |
29 | return tv.tv_sec + (tv.tv_usec / 1000000) |
30 | cdef void _floattotv(timeval *tv, double t): |
31 | cdef double s, us |
32 | us = modf(t, &s) |
33 | tv.tv_sec = s |
34 | tv.tv_usec = us * 1000000 |
35 | |
36 | cdef class SelTimer: |
37 | cdef sel_timer t |
38 | cdef int _activep |
39 | cdef readonly double time |
40 | cdef _timer |
41 | def __new__(me, double when, timerproc = None, *hunoz, **hukairz): |
42 | cdef timeval tv |
43 | _floattotv(&tv, when) |
44 | sel_addtimer(&_sel, &me.t, &tv, _timerfunc, <void *>me) |
45 | me._activep = 1 |
46 | me.time = when |
47 | me._timer = _checkcallable(timerproc, 'timer proc') |
48 | def __dealloc__(me): |
49 | if me._activep: |
50 | sel_rmtimer(&me.t) |
51 | property activep: |
52 | def __get__(me): |
53 | return _tobool(me._activep) |
54 | property timerproc: |
55 | def __get__(me): |
56 | return me._timer |
57 | def __set__(me, proc): |
58 | me._timer = _checkcallable(proc, 'timer proc') |
59 | def __del__(me): |
60 | me._timer = None |
61 | def kill(me): |
62 | if not me._activep: |
63 | raise ValueError, 'already dead' |
64 | sel_rmtimer(&me.t) |
65 | me._dead() |
66 | return me |
67 | cdef _dead(me): |
68 | me._activep = 0 |
69 | me.dead() |
70 | def dead(me): |
71 | pass |
72 | def timer(me, now): |
73 | return _maybecall(me._timer, ()) |
74 | |
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75 | cdef void _timerfunc(timeval *now, void *arg): |
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76 | cdef SelTimer st |
77 | st = <SelTimer>arg |
78 | st._dead() |
79 | st.timer(_tvtofloat(now)) |
80 | |
81 | #----- That's all, folks ---------------------------------------------------- |