4 /* Copyright (C) 2002 The gtkmm Development Team
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the Free
18 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <glibmm/main.h>
22 #include <glibmm/exceptionhandler.h>
23 #include <glibmm/thread.h>
24 #include <glibmm/wrap.h>
25 #include <glibmm/iochannel.h>
27 #include <glib/gmessages.h>
36 class SourceConnectionNode
39 explicit inline SourceConnectionNode(const sigc::slot_base& slot);
41 static void* notify(void* data);
42 static void destroy_notify_callback(void* data);
44 inline void install(GSource* source);
45 inline sigc::slot_base* get_slot();
48 sigc::slot_base slot_;
53 SourceConnectionNode::SourceConnectionNode(const sigc::slot_base& slot)
58 slot_.set_parent(this, &SourceConnectionNode::notify);
61 void* SourceConnectionNode::notify(void* data)
63 SourceConnectionNode *const self = static_cast<SourceConnectionNode*>(data);
65 // if there is no object, this call was triggered from destroy_notify_handler(),
66 // because we set self->source_ to 0 there:
69 GSource* s = self->source_;
73 // Destroying the object triggers execution of destroy_notify_handler(),
74 // eiter immediately or later, so we leave that to do the deletion.
81 void SourceConnectionNode::destroy_notify_callback(void* data)
83 SourceConnectionNode *const self = static_cast<SourceConnectionNode*>(data);
87 // The GLib side is disconnected now, thus the GSource* is no longer valid.
95 void SourceConnectionNode::install(GSource* source)
101 sigc::slot_base* SourceConnectionNode::get_slot()
107 /* We use the callback data member of GSource to store both a pointer to our
108 * wrapper and a pointer to the connection node that is currently being used.
109 * The one and only SourceCallbackData object of a Glib::Source is constructed
110 * in the ctor of Glib::Source and destroyed after the GSource object when the
111 * reference counter of the GSource object reaches zero!
113 struct SourceCallbackData
115 explicit inline SourceCallbackData(Glib::Source* wrapper_);
117 void set_node(SourceConnectionNode* node_);
119 static void destroy_notify_callback(void* data);
121 Glib::Source* wrapper;
122 SourceConnectionNode* node;
126 SourceCallbackData::SourceCallbackData(Glib::Source* wrapper_)
132 void SourceCallbackData::set_node(SourceConnectionNode* node_)
135 SourceConnectionNode::destroy_notify_callback(node);
141 void SourceCallbackData::destroy_notify_callback(void* data)
143 SourceCallbackData *const self = static_cast<SourceCallbackData*>(data);
146 SourceConnectionNode::destroy_notify_callback(self->node);
149 Glib::Source::destroy_notify_callback(self->wrapper);
155 /* Retrieve the callback data from a wrapped GSource object.
157 static SourceCallbackData* glibmm_source_get_callback_data(GSource* source)
159 g_return_val_if_fail(source->callback_funcs->get != 0, 0);
164 // Retrieve the callback function and data.
165 (*source->callback_funcs->get)(source->callback_data, source, &func, &user_data);
167 return static_cast<SourceCallbackData*>(user_data);
170 /* Glib::Source doesn't use the callback function installed with
171 * g_source_set_callback(). Instead, it invokes the sigc++ slot
172 * directly from dispatch_vfunc(), which is both simpler and more
174 * For correctness, provide a pointer to this dummy callback rather
175 * than some random pointer. That also allows for sanity checks
176 * here as well as in Source::dispatch_vfunc().
178 static gboolean glibmm_dummy_source_callback(void*)
180 g_assert_not_reached();
184 /* Only used by SignalTimeout::connect() and SignalIdle::connect().
185 * These don't use Glib::Source, to avoid the unnecessary overhead
186 * of a completely unused wrapper object.
188 static gboolean glibmm_source_callback(void* data)
190 SourceConnectionNode *const conn_data = static_cast<SourceConnectionNode*>(data);
192 #ifdef GLIBMM_EXCEPTIONS_ENABLED
195 #endif //GLIBMM_EXCEPTIONS_ENABLED
196 // Recreate the specific slot from the generic slot node.
197 return (*static_cast<sigc::slot<bool>*>(conn_data->get_slot()))();
198 #ifdef GLIBMM_EXCEPTIONS_ENABLED
202 Glib::exception_handlers_invoke();
204 #endif //GLIBMM_EXCEPTIONS_ENABLED
208 static gboolean glibmm_iosource_callback(GIOChannel*, GIOCondition condition, void* data)
210 SourceCallbackData *const callback_data = static_cast<SourceCallbackData*>(data);
211 g_return_val_if_fail(callback_data->node != 0, 0);
213 #ifdef GLIBMM_EXCEPTIONS_ENABLED
216 #endif //GLIBMM_EXCEPTIONS_ENABLED
217 // Recreate the specific slot from the generic slot node.
218 return (*static_cast<sigc::slot<bool, Glib::IOCondition>*>(callback_data->node->get_slot()))
219 ((Glib::IOCondition) condition);
220 #ifdef GLIBMM_EXCEPTIONS_ENABLED
224 Glib::exception_handlers_invoke();
226 #endif //GLIBMM_EXCEPTIONS_ENABLED
230 /* Only used by SignalChildWatch::connect().
231 * These don't use Glib::Source, to avoid the unnecessary overhead
232 * of a completely unused wrapper object.
234 static gboolean glibmm_child_watch_callback(GPid pid, gint child_status, void* data)
236 SourceConnectionNode *const conn_data = static_cast<SourceConnectionNode*>(data);
238 #ifdef GLIBMM_EXCEPTIONS_ENABLED
240 #endif //GLIBMM_EXCEPTIONS_ENABLED
241 //Recreate the specific slot from the generic slot node.
242 (*static_cast<sigc::slot<void, GPid, int>*>(conn_data->get_slot()))(pid, child_status);
243 #ifdef GLIBMM_EXCEPTIONS_ENABLED
247 Glib::exception_handlers_invoke();
249 #endif //GLIBMM_EXCEPTIONS_ENABLED
253 } // anonymous namespace
259 /**** Glib::PollFD *********************************************************/
265 gobject_.revents = 0;
268 PollFD::PollFD(int fd)
272 gobject_.revents = 0;
275 PollFD::PollFD(int fd, IOCondition events)
278 gobject_.events = events;
279 gobject_.revents = 0;
283 /**** Glib::SignalTimeout **************************************************/
286 SignalTimeout::SignalTimeout(GMainContext* context)
291 sigc::connection SignalTimeout::connect(const sigc::slot<bool>& slot,
292 unsigned int interval, int priority)
294 SourceConnectionNode *const conn_node = new SourceConnectionNode(slot);
295 const sigc::connection connection (*conn_node->get_slot());
297 GSource *const source = g_timeout_source_new(interval);
299 if(priority != G_PRIORITY_DEFAULT)
300 g_source_set_priority(source, priority);
302 g_source_set_callback(
303 source, &glibmm_source_callback, conn_node,
304 &SourceConnectionNode::destroy_notify_callback);
306 g_source_attach(source, context_);
307 g_source_unref(source); // GMainContext holds a reference
309 conn_node->install(source);
313 SignalTimeout signal_timeout()
315 return SignalTimeout(0); // 0 means default context
319 /**** Glib::SignalIdle *****************************************************/
322 SignalIdle::SignalIdle(GMainContext* context)
327 sigc::connection SignalIdle::connect(const sigc::slot<bool>& slot, int priority)
329 SourceConnectionNode *const conn_node = new SourceConnectionNode(slot);
330 const sigc::connection connection (*conn_node->get_slot());
332 GSource *const source = g_idle_source_new();
334 if(priority != G_PRIORITY_DEFAULT)
335 g_source_set_priority(source, priority);
337 g_source_set_callback(
338 source, &glibmm_source_callback, conn_node,
339 &SourceConnectionNode::destroy_notify_callback);
341 g_source_attach(source, context_);
342 g_source_unref(source); // GMainContext holds a reference
344 conn_node->install(source);
348 SignalIdle signal_idle()
350 return SignalIdle(0); // 0 means default context
354 /**** Glib::SignalIO *******************************************************/
357 SignalIO::SignalIO(GMainContext* context)
362 sigc::connection SignalIO::connect(const sigc::slot<bool,IOCondition>& slot,
363 int fd, IOCondition condition, int priority)
365 const Glib::RefPtr<IOSource> source = IOSource::create(fd, condition);
367 if(priority != G_PRIORITY_DEFAULT)
368 source->set_priority(priority);
370 const sigc::connection connection = source->connect(slot);
372 g_source_attach(source->gobj(), context_);
377 sigc::connection SignalIO::connect(const sigc::slot<bool,IOCondition>& slot,
378 const Glib::RefPtr<IOChannel>& channel,
379 IOCondition condition, int priority)
381 const Glib::RefPtr<IOSource> source = IOSource::create(channel, condition);
383 if(priority != G_PRIORITY_DEFAULT)
384 source->set_priority(priority);
386 const sigc::connection connection = source->connect(slot);
388 g_source_attach(source->gobj(), context_);
395 return SignalIO(0); // 0 means default context
398 /**** Glib::SignalChildWatch **************************************************/
401 SignalChildWatch::SignalChildWatch(GMainContext* context)
406 sigc::connection SignalChildWatch::connect(const sigc::slot<void, GPid, int>& slot,
407 GPid pid, int priority)
409 SourceConnectionNode *const conn_node = new SourceConnectionNode(slot);
410 const sigc::connection connection(*conn_node->get_slot());
412 GSource *const source = g_child_watch_source_new(pid);
414 if(priority != G_PRIORITY_DEFAULT)
415 g_source_set_priority(source, priority);
417 g_source_set_callback(
418 source, (GSourceFunc)&glibmm_child_watch_callback, conn_node,
419 &SourceConnectionNode::destroy_notify_callback);
421 g_source_attach(source, context_);
422 g_source_unref(source); // GMainContext holds a reference
424 conn_node->install(source);
428 SignalChildWatch signal_child_watch()
430 return SignalChildWatch(0); // 0 means default context
433 /**** Glib::MainContext ****************************************************/
436 Glib::RefPtr<MainContext> MainContext::create()
438 return Glib::RefPtr<MainContext>(reinterpret_cast<MainContext*>(g_main_context_new()));
442 Glib::RefPtr<MainContext> MainContext::get_default()
444 return Glib::wrap(g_main_context_default(), true);
447 bool MainContext::iteration(bool may_block)
449 return g_main_context_iteration(gobj(), may_block);
452 bool MainContext::pending()
454 return g_main_context_pending(gobj());
457 void MainContext::wakeup()
459 g_main_context_wakeup(gobj());
462 bool MainContext::acquire()
464 return g_main_context_acquire(gobj());
467 bool MainContext::wait(Glib::Cond& cond, Glib::Mutex& mutex)
469 return g_main_context_wait(gobj(), cond.gobj(), mutex.gobj());
472 void MainContext::release()
474 g_main_context_release(gobj());
477 bool MainContext::prepare(int& priority)
479 return g_main_context_prepare(gobj(), &priority);
482 bool MainContext::prepare()
484 return g_main_context_prepare(gobj(), 0);
487 void MainContext::query(int max_priority, int& timeout, std::vector<PollFD>& fds)
490 fds.resize(8); // rather bogus number, but better than 0
494 const int size_before = fds.size();
495 const int size_needed = g_main_context_query(
496 gobj(), max_priority, &timeout, reinterpret_cast<GPollFD*>(&fds.front()), size_before);
498 fds.resize(size_needed);
500 if(size_needed <= size_before)
505 bool MainContext::check(int max_priority, std::vector<PollFD>& fds)
508 return g_main_context_check(gobj(), max_priority, reinterpret_cast<GPollFD*>(&fds.front()), fds.size());
513 void MainContext::dispatch()
515 g_main_context_dispatch(gobj());
518 void MainContext::set_poll_func(GPollFunc poll_func)
520 g_main_context_set_poll_func(gobj(), poll_func);
523 GPollFunc MainContext::get_poll_func()
525 return g_main_context_get_poll_func(gobj());
528 void MainContext::add_poll(PollFD& fd, int priority)
530 g_main_context_add_poll(gobj(), fd.gobj(), priority);
533 void MainContext::remove_poll(PollFD& fd)
535 g_main_context_remove_poll(gobj(), fd.gobj());
538 SignalTimeout MainContext::signal_timeout()
540 return SignalTimeout(gobj());
543 SignalIdle MainContext::signal_idle()
545 return SignalIdle(gobj());
548 SignalIO MainContext::signal_io()
550 return SignalIO(gobj());
553 SignalChildWatch MainContext::signal_child_watch()
555 return SignalChildWatch(gobj());
558 void MainContext::reference() const
560 g_main_context_ref(reinterpret_cast<GMainContext*>(const_cast<MainContext*>(this)));
563 void MainContext::unreference() const
565 g_main_context_unref(reinterpret_cast<GMainContext*>(const_cast<MainContext*>(this)));
568 GMainContext* MainContext::gobj()
570 return reinterpret_cast<GMainContext*>(this);
573 const GMainContext* MainContext::gobj() const
575 return reinterpret_cast<const GMainContext*>(this);
578 GMainContext* MainContext::gobj_copy() const
581 return const_cast<GMainContext*>(gobj());
584 Glib::RefPtr<MainContext> wrap(GMainContext* gobject, bool take_copy)
586 if(take_copy && gobject)
587 g_main_context_ref(gobject);
589 return Glib::RefPtr<MainContext>(reinterpret_cast<MainContext*>(gobject));
593 /**** Glib::MainLoop *******************************************************/
595 Glib::RefPtr<MainLoop> MainLoop::create(bool is_running)
597 return Glib::RefPtr<MainLoop>(
598 reinterpret_cast<MainLoop*>(g_main_loop_new(0, is_running)));
601 Glib::RefPtr<MainLoop> MainLoop::create(const Glib::RefPtr<MainContext>& context, bool is_running)
603 return Glib::RefPtr<MainLoop>(
604 reinterpret_cast<MainLoop*>(g_main_loop_new(Glib::unwrap(context), is_running)));
609 g_main_loop_run(gobj());
612 void MainLoop::quit()
614 g_main_loop_quit(gobj());
617 bool MainLoop::is_running()
619 return g_main_loop_is_running(gobj());
622 Glib::RefPtr<MainContext> MainLoop::get_context()
624 return Glib::wrap(g_main_loop_get_context(gobj()), true);
628 int MainLoop::depth()
630 return g_main_depth();
633 void MainLoop::reference() const
635 g_main_loop_ref(reinterpret_cast<GMainLoop*>(const_cast<MainLoop*>(this)));
638 void MainLoop::unreference() const
640 g_main_loop_unref(reinterpret_cast<GMainLoop*>(const_cast<MainLoop*>(this)));
643 GMainLoop* MainLoop::gobj()
645 return reinterpret_cast<GMainLoop*>(this);
648 const GMainLoop* MainLoop::gobj() const
650 return reinterpret_cast<const GMainLoop*>(this);
653 GMainLoop* MainLoop::gobj_copy() const
656 return const_cast<GMainLoop*>(gobj());
659 Glib::RefPtr<MainLoop> wrap(GMainLoop* gobject, bool take_copy)
661 if(take_copy && gobject)
662 g_main_loop_ref(gobject);
664 return Glib::RefPtr<MainLoop>(reinterpret_cast<MainLoop*>(gobject));
668 /**** Glib::Source *********************************************************/
671 const GSourceFuncs Source::vfunc_table_ =
673 &Source::prepare_vfunc,
674 &Source::check_vfunc,
675 &Source::dispatch_vfunc,
676 0, // finalize_vfunc // We can't use finalize_vfunc because there is no way
677 // to store a pointer to our wrapper anywhere in GSource so
678 // that it persists until finalize_vfunc would be called from here.
679 0, // closure_callback
680 0, // closure_marshal
683 unsigned int Source::attach(const Glib::RefPtr<MainContext>& context)
685 return g_source_attach(gobject_, Glib::unwrap(context));
688 unsigned int Source::attach()
690 return g_source_attach(gobject_, 0);
693 void Source::destroy()
695 g_source_destroy(gobject_);
698 void Source::set_priority(int priority)
700 g_source_set_priority(gobject_, priority);
703 int Source::get_priority() const
705 return g_source_get_priority(gobject_);
708 void Source::set_can_recurse(bool can_recurse)
710 g_source_set_can_recurse(gobject_, can_recurse);
713 bool Source::get_can_recurse() const
715 return g_source_get_can_recurse(gobject_);
718 unsigned int Source::get_id() const
720 return g_source_get_id(gobject_);
723 Glib::RefPtr<MainContext> Source::get_context()
725 return Glib::wrap(g_source_get_context(gobject_), true);
728 GSource* Source::gobj_copy() const
730 return g_source_ref(gobject_);
733 void Source::reference() const
735 g_source_ref(gobject_);
738 void Source::unreference() const
740 g_source_unref(gobject_);
745 gobject_ (g_source_new(const_cast<GSourceFuncs*>(&vfunc_table_), sizeof(GSource)))
747 g_source_set_callback(
748 gobject_, &glibmm_dummy_source_callback,
749 new SourceCallbackData(this), // our persistant callback data object
750 &SourceCallbackData::destroy_notify_callback);
753 Source::Source(GSource* cast_item, GSourceFunc callback_func)
757 g_source_set_callback(
758 gobject_, callback_func,
759 new SourceCallbackData(this), // our persistant callback data object
760 &SourceCallbackData::destroy_notify_callback);
765 // The dtor should be invoked by destroy_notify_callback() only, which clears
766 // gobject_ before deleting. However, we might also get to this point if
767 // a derived ctor threw an exception, and then we need to unref manually.
771 SourceCallbackData *const data = glibmm_source_get_callback_data(gobject_);
774 GSource *const tmp_gobject = gobject_;
777 g_source_unref(tmp_gobject);
781 sigc::connection Source::connect_generic(const sigc::slot_base& slot)
783 SourceConnectionNode *const conn_node = new SourceConnectionNode(slot);
784 const sigc::connection connection (*conn_node->get_slot());
786 // Don't override the callback data. Reuse the existing one
787 // calling SourceCallbackData::set_node() to register conn_node.
788 SourceCallbackData *const data = glibmm_source_get_callback_data(gobject_);
789 data->set_node(conn_node);
791 conn_node->install(gobject_);
795 void Source::add_poll(Glib::PollFD& poll_fd)
797 g_source_add_poll(gobject_, poll_fd.gobj());
800 void Source::remove_poll(Glib::PollFD& poll_fd)
802 g_source_remove_poll(gobject_, poll_fd.gobj());
805 void Source::get_current_time(Glib::TimeVal& current_time)
807 g_source_get_current_time(gobject_, ¤t_time);
811 Source* Source::get_wrapper(GSource* source)
813 SourceCallbackData *const data = glibmm_source_get_callback_data(source);
814 return data->wrapper;
818 gboolean Source::prepare_vfunc(GSource* source, int* timeout)
820 #ifdef GLIBMM_EXCEPTIONS_ENABLED
823 #endif //GLIBMM_EXCEPTIONS_ENABLED
824 Source *const self = get_wrapper(source);
825 return self->prepare(*timeout);
826 #ifdef GLIBMM_EXCEPTIONS_ENABLED
830 Glib::exception_handlers_invoke();
832 #endif //GLIBMM_EXCEPTIONS_ENABLED
838 gboolean Source::check_vfunc(GSource* source)
840 #ifdef GLIBMM_EXCEPTIONS_ENABLED
843 #endif //GLIBMM_EXCEPTIONS_ENABLED
844 Source *const self = get_wrapper(source);
845 return self->check();
846 #ifdef GLIBMM_EXCEPTIONS_ENABLED
850 Glib::exception_handlers_invoke();
852 #endif //GLIBMM_EXCEPTIONS_ENABLED
858 gboolean Source::dispatch_vfunc(GSource*, GSourceFunc callback, void* user_data)
860 SourceCallbackData *const callback_data = static_cast<SourceCallbackData*>(user_data);
862 g_return_val_if_fail(callback == &glibmm_dummy_source_callback, 0);
863 g_return_val_if_fail(callback_data != 0 && callback_data->node != 0, 0);
865 #ifdef GLIBMM_EXCEPTIONS_ENABLED
868 #endif //GLIBMM_EXCEPTIONS_ENABLED
869 Source *const self = callback_data->wrapper;
870 return self->dispatch(callback_data->node->get_slot());
871 #ifdef GLIBMM_EXCEPTIONS_ENABLED
875 Glib::exception_handlers_invoke();
877 #endif //GLIBMM_EXCEPTIONS_ENABLED
882 void Source::destroy_notify_callback(void* data)
886 Source *const self = static_cast<Source*>(data);
888 // gobject_ is already invalid at this point.
891 // No exception checking: if the dtor throws, you're out of luck anyway.
897 /**** Glib::TimeoutSource **************************************************/
900 Glib::RefPtr<TimeoutSource> TimeoutSource::create(unsigned int interval)
902 return Glib::RefPtr<TimeoutSource>(new TimeoutSource(interval));
905 sigc::connection TimeoutSource::connect(const sigc::slot<bool>& slot)
907 return connect_generic(slot);
910 TimeoutSource::TimeoutSource(unsigned int interval)
914 expiration_.assign_current_time();
915 expiration_.add_milliseconds(std::min<unsigned long>(G_MAXLONG, interval_));
918 TimeoutSource::~TimeoutSource()
921 bool TimeoutSource::prepare(int& timeout)
923 Glib::TimeVal current_time;
924 get_current_time(current_time);
926 Glib::TimeVal remaining = expiration_;
927 remaining.subtract(current_time);
929 if(remaining.negative())
936 const unsigned long milliseconds =
937 static_cast<unsigned long>(remaining.tv_sec) * 1000U +
938 static_cast<unsigned long>(remaining.tv_usec) / 1000U;
940 // Set remaining milliseconds.
941 timeout = std::min<unsigned long>(G_MAXINT, milliseconds);
943 // Check if the system time has been set backwards. (remaining > interval)
944 remaining.add_milliseconds(- std::min<unsigned long>(G_MAXLONG, interval_) - 1);
945 if(!remaining.negative())
947 // Oh well. Reset the expiration time to now + interval;
948 // this at least avoids hanging for long periods of time.
949 expiration_ = current_time;
950 expiration_.add_milliseconds(interval_);
951 timeout = std::min<unsigned int>(G_MAXINT, interval_);
955 return (timeout == 0);
958 bool TimeoutSource::check()
960 Glib::TimeVal current_time;
961 get_current_time(current_time);
963 return (expiration_ <= current_time);
966 bool TimeoutSource::dispatch(sigc::slot_base* slot)
968 const bool again = (*static_cast<sigc::slot<bool>*>(slot))();
972 get_current_time(expiration_);
973 expiration_.add_milliseconds(std::min<unsigned long>(G_MAXLONG, interval_));
980 /**** Glib::IdleSource *****************************************************/
983 Glib::RefPtr<IdleSource> IdleSource::create()
985 return Glib::RefPtr<IdleSource>(new IdleSource());
988 sigc::connection IdleSource::connect(const sigc::slot<bool>& slot)
990 return connect_generic(slot);
993 IdleSource::IdleSource()
995 set_priority(PRIORITY_DEFAULT_IDLE);
998 IdleSource::~IdleSource()
1001 bool IdleSource::prepare(int& timeout)
1007 bool IdleSource::check()
1012 bool IdleSource::dispatch(sigc::slot_base* slot)
1014 return (*static_cast<sigc::slot<bool>*>(slot))();
1018 /**** Glib::IOSource *******************************************************/
1021 Glib::RefPtr<IOSource> IOSource::create(int fd, IOCondition condition)
1023 return Glib::RefPtr<IOSource>(new IOSource(fd, condition));
1026 Glib::RefPtr<IOSource> IOSource::create(const Glib::RefPtr<IOChannel>& channel, IOCondition condition)
1028 return Glib::RefPtr<IOSource>(new IOSource(channel, condition));
1031 sigc::connection IOSource::connect(const sigc::slot<bool,IOCondition>& slot)
1033 return connect_generic(slot);
1036 IOSource::IOSource(int fd, IOCondition condition)
1038 poll_fd_ (fd, condition)
1043 IOSource::IOSource(const Glib::RefPtr<IOChannel>& channel, IOCondition condition)
1045 Source(g_io_create_watch(channel->gobj(), (GIOCondition) condition),
1046 (GSourceFunc) &glibmm_iosource_callback)
1049 IOSource::~IOSource()
1052 bool IOSource::prepare(int& timeout)
1058 bool IOSource::check()
1060 return ((poll_fd_.get_revents() & poll_fd_.get_events()) != 0);
1063 bool IOSource::dispatch(sigc::slot_base* slot)
1065 return (*static_cast<sigc::slot<bool,IOCondition>*>(slot))
1066 (poll_fd_.get_revents());