2 Copyright (C) 1998-99 Paul Barton-Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __selectable_h__
21 #define __selectable_h__
27 #include <sigc++/sigc++.h>
29 #include <sys/types.h>
31 #include "pbd/libpbd_visibility.h"
34 enum LIBPBD_API Condition {
40 class LIBPBD_API Selectable : public sigc::trackable
45 Selectable (const std::string &, int flags, int mode = 0);
49 sigc::signal<void,Selectable *,Select::Condition> readable;
50 sigc::signal<void,Selectable *,Select::Condition> writable;
51 sigc::signal<void,Selectable *,Select::Condition> exceptioned;
53 int fd() { return _fd; }
54 bool ok() { return _ok; }
57 void selected (unsigned int condition);
61 friend class Selector;
75 class LIBPBD_API Selector {
77 int post_select (fd_set *, fd_set *, fd_set *);
80 typedef std::list<Selectable *> Selectables;
81 Selectables selectables;
82 pthread_mutex_t list_lock;
84 static bool use_list_lock;
89 void multithreaded (bool yn) {
93 void add (int condition, Selectable *s);
94 void remove (Selectable *);
95 int select (unsigned long usecs);
103 #endif // __selectable_h__