| | 1 | # -*-pyrex-*- |
| | 2 | # |
| | 3 | # $Id$ |
| | 4 | # |
| | 5 | # In-band signals |
| | 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 | import signal |
| | 29 | |
| | 30 | cdef class SelSignal: |
| | 31 | cdef sig s |
| | 32 | cdef int _activep |
| | 33 | cdef readonly int signal |
| | 34 | cdef _signalled |
| | 35 | def __new__(me, int sig, signalledproc = None, *hunoz, **hukairz): |
| | 36 | if sig < 0 or sig >= signal.NSIG: |
| | 37 | raise ValueError, 'signal number out of range' |
| | 38 | me.signal = sig |
| | 39 | me._signalledproc = _checkcallable(signalledproc, 'signalled proc') |
| | 40 | me._activep = 0 |
| | 41 | def __dealloc__(me): |
| | 42 | if me._activep: |
| | 43 | sig_remove(&me.s) |
| | 44 | property activep: |
| | 45 | def __get__(me): |
| | 46 | return _tobool(me._activep) |
| | 47 | property signalledproc: |
| | 48 | def __get__(me): |
| | 49 | return me._signalled |
| | 50 | def __set__(me, proc): |
| | 51 | me._signalled = _checkcallable(proc, 'signalled proc') |
| | 52 | def __del__(me): |
| | 53 | me._signalled = None |
| | 54 | def enable(me): |
| | 55 | if me._activep: |
| | 56 | raise ValueError, 'already enabled' |
| | 57 | sig_add(&me.s, me.signal, _sigfunc, <void *>me) |
| | 58 | me._enabled() |
| | 59 | return me |
| | 60 | def disable(me): |
| | 61 | if not me._activep: |
| | 62 | raise ValueError, 'already disabled' |
| | 63 | sig_remove(&me.s) |
| | 64 | me._disabled() |
| | 65 | return me |
| | 66 | cdef _enabled(me): |
| | 67 | me._activep = 1 |
| | 68 | me.enabled() |
| | 69 | cdef _disabled(me): |
| | 70 | me._activep = 0 |
| | 71 | me.disabled() |
| | 72 | def enabled(me): |
| | 73 | pass |
| | 74 | def disabled(me): |
| | 75 | pass |
| | 76 | def signalled(me): |
| | 77 | return _maybecall(me._signalled, ()) |
| | 78 | |
| | 79 | cdef void _sigfunc(int sig, void *arg): |
| | 80 | cdef SelSignal s |
| | 81 | s = <SelSignal>arg |
| | 82 | s.signalled() |
| | 83 | |
| | 84 | sig_init(&_sel) |
| | 85 | |
| | 86 | #----- That's all, folks ---------------------------------------------------- |
~mdw / mLib-python / blame_incremental