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Yet another attempt at fixing #9361

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This commit is contained in:
Robin Gareus 2023-06-10 01:38:26 +02:00
parent 3fbc89e4ee
commit bb54bc0d40
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 34 additions and 17 deletions
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3
libs/ardour/ardour/region.h
View File

@ -511,6 +511,7 @@ private:
void trim_to_internal (timepos_t const & position, timecnt_t const & length);
void maybe_uncopy ();
void subscribe_to_source_drop ();
bool verify_start (timepos_t const &);
bool verify_length (timecnt_t&);
@ -547,6 +548,8 @@ private:
void use_sources (SourceList const &);
std::atomic<int> _source_deleted;
Glib::Threads::Mutex _source_list_lock;
PBD::ScopedConnectionList _source_deleted_connections;
};
} /* namespace ARDOUR */

44
libs/ardour/region.cc
View File

@ -1559,12 +1559,12 @@ Region::source_deleted (std::weak_ptr<Source>)
if (!_session.deletion_in_progress()) {
/* this is a very special case: at least one of the region's
sources has bee deleted, so invalidate all references to
ourselves. Do NOT do this during session deletion, because
then we run the risk that this will actually result
in this object being deleted (as refcnt goes to zero)
while emitting DropReferences.
* sources has been deleted, so invalidate all references to
* ourselves. We run the risk that this will actually result
* in this object being deleted (as refcnt goes to zero)
* while emitting DropReferences.
*/
std::shared_ptr<Region> me (shared_from_this ());
drop_references ();
}
@ -1586,6 +1586,7 @@ Region::master_source_names ()
void
Region::set_master_sources (const SourceList& srcs)
{
Glib::Threads::Mutex::Lock lx (_source_list_lock);
for (SourceList::const_iterator i = _master_sources.begin (); i != _master_sources.end(); ++i) {
(*i)->dec_use_count ();
}
@ -1596,6 +1597,7 @@ Region::set_master_sources (const SourceList& srcs)
for (SourceList::const_iterator i = _master_sources.begin (); i != _master_sources.end(); ++i) {
(*i)->inc_use_count ();
}
subscribe_to_source_drop ();
}
bool
@ -1944,6 +1946,7 @@ Region::rename_cue_marker (CueMarker& cm, std::string const & str)
void
Region::drop_sources ()
{
Glib::Threads::Mutex::Lock lx (_source_list_lock);
for (SourceList::const_iterator i = _sources.begin (); i != _sources.end(); ++i) {
(*i)->dec_use_count ();
}
@ -1955,27 +1958,38 @@ Region::drop_sources ()
}
_master_sources.clear ();
_source_deleted_connections.drop_connections ();
}
void
Region::use_sources (SourceList const & s)
{
_source_deleted.store (0);
set<std::shared_ptr<Source> > unique_srcs;
Glib::Threads::Mutex::Lock lx (_source_list_lock);
for (SourceList::const_iterator i = s.begin (); i != s.end(); ++i) {
_sources.push_back (*i);
(*i)->inc_use_count ();
_master_sources.push_back (*i);
(*i)->inc_use_count ();
}
subscribe_to_source_drop ();
}
/* connect only once to DropReferences, even if sources are replicated
*/
if (unique_srcs.find (*i) == unique_srcs.end ()) {
unique_srcs.insert (*i);
(*i)->DropReferences.connect_same_thread (*this, boost::bind (&Region::source_deleted, this, std::weak_ptr<Source>(*i)));
void
Region::subscribe_to_source_drop ()
{
_source_deleted.store (0);
_source_deleted_connections.drop_connections ();
set<std::shared_ptr<Source> > unique_srcs;
for (auto const& i : _sources) {
if (unique_srcs.find (i) == unique_srcs.end ()) {
unique_srcs.insert (i);
i->DropReferences.connect_same_thread (_source_deleted_connections, boost::bind (&Region::source_deleted, this, std::weak_ptr<Source>(i)));
}
}
for (auto const& i : _master_sources) {
if (unique_srcs.find (i) == unique_srcs.end ()) {
unique_srcs.insert (i);
i->DropReferences.connect_same_thread (_source_deleted_connections, boost::bind (&Region::source_deleted, this, std::weak_ptr<Source>(i)));
}
}
}