2010-03-30 11:18:43 -04:00
|
|
|
#include <iostream>
|
2009-12-21 13:23:07 -05:00
|
|
|
#include "pbd/event_loop.h"
|
2010-03-30 11:18:43 -04:00
|
|
|
#include "pbd/stacktrace.h"
|
2009-12-21 13:23:07 -05:00
|
|
|
|
|
|
|
using namespace PBD;
|
2010-03-30 11:18:43 -04:00
|
|
|
using namespace std;
|
2009-12-21 13:23:07 -05:00
|
|
|
|
|
|
|
Glib::StaticPrivate<EventLoop> EventLoop::thread_event_loop;
|
|
|
|
|
|
|
|
static void do_not_delete_the_loop_pointer (void*) { }
|
|
|
|
|
|
|
|
EventLoop*
|
|
|
|
EventLoop::get_event_loop_for_thread() {
|
|
|
|
return thread_event_loop.get ();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
EventLoop::set_event_loop_for_thread (EventLoop* loop)
|
|
|
|
{
|
|
|
|
thread_event_loop.set (loop, do_not_delete_the_loop_pointer);
|
|
|
|
}
|
|
|
|
|
2010-03-30 11:18:43 -04:00
|
|
|
void*
|
|
|
|
EventLoop::invalidate_request (void* data)
|
|
|
|
{
|
|
|
|
InvalidationRecord* ir = (InvalidationRecord*) data;
|
|
|
|
|
2012-04-24 12:45:38 -04:00
|
|
|
/* Some of the requests queued with an EventLoop may involve functors
|
|
|
|
* that make method calls to objects whose lifetime is shorter
|
|
|
|
* than the EventLoop's. We do not want to make those calls if the
|
|
|
|
* object involve has been destroyed. To prevent this, we
|
|
|
|
* provide a way to invalidate those requests when the object is
|
|
|
|
* destroyed.
|
|
|
|
*
|
|
|
|
* An object was passed to __invalidator() which added a callback to
|
|
|
|
* EventLoop::invalidate_request() to its "notify when destroyed"
|
|
|
|
* list. __invalidator() returned an InvalidationRecord that has been
|
|
|
|
* to passed to this function as data.
|
|
|
|
*
|
|
|
|
* The object is currently being destroyed and so we want to
|
|
|
|
* mark all requests involving this object that are queued with
|
|
|
|
* any EventLoop as invalid.
|
|
|
|
*
|
|
|
|
* As of April 2012, we are usign sigc::trackable as the base object
|
|
|
|
* used to queue calls to ::invalidate_request() to be made upon
|
|
|
|
* destruction, via its ::add_destroy_notify_callback() API. This is
|
|
|
|
* not necessarily ideal, but it is very close to precisely what we
|
|
|
|
* want, and many of the objects we want to do this with already
|
|
|
|
* inherit (indirectly) from sigc::trackable.
|
|
|
|
*/
|
|
|
|
|
2010-03-30 11:18:43 -04:00
|
|
|
if (ir->event_loop) {
|
2010-04-02 20:42:39 -04:00
|
|
|
Glib::Mutex::Lock lm (ir->event_loop->slot_invalidation_mutex());
|
|
|
|
for (list<BaseRequestObject*>::iterator i = ir->requests.begin(); i != ir->requests.end(); ++i) {
|
|
|
|
(*i)->valid = false;
|
|
|
|
(*i)->invalidation = 0;
|
|
|
|
}
|
|
|
|
delete ir;
|
2011-04-19 12:07:10 -04:00
|
|
|
}
|
2010-03-30 11:18:43 -04:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|