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add Session::StateProtector

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temp. disable save during batch updates, save once at
the end.
This commit is contained in:
Robin Gareus 2014-06-28 21:27:36 +02:00 • committed by Paul Davis
parent 4bbe871805
commit d010ef5d99
3 changed files with 30 additions and 0 deletions
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22
libs/ardour/ardour/session.h
View file

@ -433,6 +433,23 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
StateOfTheState state_of_the_state() const { return _state_of_the_state; }
class StateProtector {
public:
StateProtector (Session* s) : _session (s) {
g_atomic_int_inc (&s->_suspend_save);
}
~StateProtector () {
if (g_atomic_int_dec_and_test (&_session->_suspend_save)) {
while (_session->_save_queued) {
_session->_save_queued = false;
_session->save_state ("");
}
}
}
private:
Session * _session;
};
void add_route_group (RouteGroup *);
void remove_route_group (RouteGroup&);
void reorder_route_groups (std::list<RouteGroup*>);
@ -1106,6 +1123,10 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
bool state_was_pending;
StateOfTheState _state_of_the_state;
friend class StateProtector;
gint _suspend_save; /* atomic */
volatile bool _save_queued;
void auto_save();
int load_options (const XMLNode&);
int load_state (std::string snapshot_name);
@ -1658,6 +1679,7 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
static int get_session_info_from_path (XMLTree& state_tree, const std::string& xmlpath);
};
} // namespace ARDOUR
#endif /* __ardour_session_h__ */

2
libs/ardour/session.cc
View file

@ -206,6 +206,8 @@ Session::Session (AudioEngine &eng,
, state_tree (0)
, state_was_pending (false)
, _state_of_the_state (StateOfTheState(CannotSave|InitialConnecting|Loading))
, _suspend_save (0)
, _save_queued (false)
, _last_roll_location (0)
, _last_roll_or_reversal_location (0)
, _last_record_location (0)

6
libs/ardour/session_state.cc
View file

@ -693,6 +693,12 @@ Session::save_state (string snapshot_name, bool pending, bool switch_to_snapshot
return 1;
}
if (g_atomic_int_get(&_suspend_save)) {
_save_queued = true;
return 1;
}
_save_queued = false;
if (!_engine.connected ()) {
error << string_compose (_("the %1 audio engine is not connected and state saving would lose all I/O connections. Session not saved"),
PROGRAM_NAME)