NO-OP: whitespace

This commit is contained in:
Robin Gareus 2017-04-22 16:09:10 +02:00
parent 51f184e1a2
commit dd1bf47394

View File

@ -52,33 +52,33 @@ int alloc_allowed ()
#endif
Graph::Graph (Session & session)
: SessionHandleRef (session)
, _threads_active (false)
: SessionHandleRef (session)
, _threads_active (false)
, _execution_sem ("graph_execution", 0)
, _callback_start_sem ("graph_start", 0)
, _callback_done_sem ("graph_done", 0)
, _cleanup_sem ("graph_cleanup", 0)
{
pthread_mutex_init( &_trigger_mutex, NULL);
pthread_mutex_init( &_trigger_mutex, NULL);
/* XXX: rather hacky `fix' to stop _trigger_queue.push_back() allocating
memory in the RT thread.
*/
* memory in the RT thread.
*/
_trigger_queue.reserve (8192);
_execution_tokens = 0;
_execution_tokens = 0;
_current_chain = 0;
_pending_chain = 0;
_setup_chain = 1;
_graph_empty = true;
_current_chain = 0;
_pending_chain = 0;
_setup_chain = 1;
_graph_empty = true;
ARDOUR::AudioEngine::instance()->Running.connect_same_thread (engine_connections, boost::bind (&Graph::reset_thread_list, this));
ARDOUR::AudioEngine::instance()->Stopped.connect_same_thread (engine_connections, boost::bind (&Graph::engine_stopped, this));
ARDOUR::AudioEngine::instance()->Halted.connect_same_thread (engine_connections, boost::bind (&Graph::engine_stopped, this));
reset_thread_list ();
reset_thread_list ();
#ifdef DEBUG_RT_ALLOC
graph = this;
@ -98,67 +98,67 @@ Graph::engine_stopped ()
void
Graph::reset_thread_list ()
{
uint32_t num_threads = how_many_dsp_threads ();
uint32_t num_threads = how_many_dsp_threads ();
/* For now, we shouldn't be using the graph code if we only have 1 DSP thread */
assert (num_threads > 1);
/* don't bother doing anything here if we already have the right
number of threads.
*/
/* don't bother doing anything here if we already have the right
* number of threads.
*/
if (AudioEngine::instance()->process_thread_count() == num_threads) {
return;
}
if (AudioEngine::instance()->process_thread_count() == num_threads) {
return;
}
Glib::Threads::Mutex::Lock lm (_session.engine().process_lock());
Glib::Threads::Mutex::Lock lm (_session.engine().process_lock());
if (AudioEngine::instance()->process_thread_count() != 0) {
drop_threads ();
}
if (AudioEngine::instance()->process_thread_count() != 0) {
drop_threads ();
}
_threads_active = true;
_threads_active = true;
if (AudioEngine::instance()->create_process_thread (boost::bind (&Graph::main_thread, this)) != 0) {
throw failed_constructor ();
}
for (uint32_t i = 1; i < num_threads; ++i) {
for (uint32_t i = 1; i < num_threads; ++i) {
if (AudioEngine::instance()->create_process_thread (boost::bind (&Graph::helper_thread, this))) {
throw failed_constructor ();
}
}
}
}
void
Graph::session_going_away()
{
drop_threads ();
drop_threads ();
// now drop all references on the nodes.
_nodes_rt[0].clear();
_nodes_rt[1].clear();
_init_trigger_list[0].clear();
_init_trigger_list[1].clear();
_trigger_queue.clear();
// now drop all references on the nodes.
_nodes_rt[0].clear();
_nodes_rt[1].clear();
_init_trigger_list[0].clear();
_init_trigger_list[1].clear();
_trigger_queue.clear();
}
void
Graph::drop_threads ()
{
Glib::Threads::Mutex::Lock ls (_swap_mutex);
_threads_active = false;
Glib::Threads::Mutex::Lock ls (_swap_mutex);
_threads_active = false;
uint32_t thread_count = AudioEngine::instance()->process_thread_count ();
uint32_t thread_count = AudioEngine::instance()->process_thread_count ();
for (unsigned int i=0; i < thread_count; i++) {
for (unsigned int i=0; i < thread_count; i++) {
pthread_mutex_lock (&_trigger_mutex);
_execution_sem.signal ();
pthread_mutex_unlock (&_trigger_mutex);
}
}
pthread_mutex_lock (&_trigger_mutex);
_callback_start_sem.signal ();
_callback_start_sem.signal ();
pthread_mutex_unlock (&_trigger_mutex);
AudioEngine::instance()->join_process_threads ();
@ -169,59 +169,59 @@ Graph::drop_threads ()
void
Graph::clear_other_chain ()
{
Glib::Threads::Mutex::Lock ls (_swap_mutex);
Glib::Threads::Mutex::Lock ls (_swap_mutex);
while (1) {
if (_setup_chain != _pending_chain) {
while (1) {
if (_setup_chain != _pending_chain) {
for (node_list_t::iterator ni=_nodes_rt[_setup_chain].begin(); ni!=_nodes_rt[_setup_chain].end(); ni++) {
(*ni)->_activation_set[_setup_chain].clear();
}
for (node_list_t::iterator ni=_nodes_rt[_setup_chain].begin(); ni!=_nodes_rt[_setup_chain].end(); ni++) {
(*ni)->_activation_set[_setup_chain].clear();
}
_nodes_rt[_setup_chain].clear ();
_init_trigger_list[_setup_chain].clear ();
break;
}
/* setup chain == pending chain - we have
to wait till this is no longer true.
*/
_cleanup_cond.wait (_swap_mutex);
}
_nodes_rt[_setup_chain].clear ();
_init_trigger_list[_setup_chain].clear ();
break;
}
/* setup chain == pending chain - we have
* to wait till this is no longer true.
*/
_cleanup_cond.wait (_swap_mutex);
}
}
void
Graph::prep()
{
node_list_t::iterator i;
int chain;
node_list_t::iterator i;
int chain;
if (_swap_mutex.trylock()) {
// we got the swap mutex.
if (_current_chain != _pending_chain)
{
// printf ("chain swap ! %d -> %d\n", _current_chain, _pending_chain);
_setup_chain = _current_chain;
_current_chain = _pending_chain;
_cleanup_cond.signal ();
}
_swap_mutex.unlock ();
}
if (_swap_mutex.trylock()) {
// we got the swap mutex.
if (_current_chain != _pending_chain)
{
// printf ("chain swap ! %d -> %d\n", _current_chain, _pending_chain);
_setup_chain = _current_chain;
_current_chain = _pending_chain;
_cleanup_cond.signal ();
}
_swap_mutex.unlock ();
}
chain = _current_chain;
chain = _current_chain;
_graph_empty = true;
for (i=_nodes_rt[chain].begin(); i!=_nodes_rt[chain].end(); i++) {
(*i)->prep( chain);
_graph_empty = false;
}
_finished_refcount = _init_finished_refcount[chain];
_graph_empty = true;
for (i=_nodes_rt[chain].begin(); i!=_nodes_rt[chain].end(); i++) {
(*i)->prep( chain);
_graph_empty = false;
}
_finished_refcount = _init_finished_refcount[chain];
/* Trigger the initial nodes for processing, which are the ones at the `input' end */
pthread_mutex_lock (&_trigger_mutex);
for (i=_init_trigger_list[chain].begin(); i!=_init_trigger_list[chain].end(); i++) {
for (i=_init_trigger_list[chain].begin(); i!=_init_trigger_list[chain].end(); i++) {
/* don't use ::trigger here, as we have already locked the mutex */
_trigger_queue.push_back (i->get ());
}
_trigger_queue.push_back (i->get ());
}
pthread_mutex_unlock (&_trigger_mutex);
}
@ -229,7 +229,7 @@ void
Graph::trigger (GraphNode* n)
{
pthread_mutex_lock (&_trigger_mutex);
_trigger_queue.push_back (n);
_trigger_queue.push_back (n);
pthread_mutex_unlock (&_trigger_mutex);
}
@ -239,78 +239,77 @@ Graph::trigger (GraphNode* n)
void
Graph::dec_ref()
{
if (g_atomic_int_dec_and_test (const_cast<gint*> (&_finished_refcount))) {
if (g_atomic_int_dec_and_test (const_cast<gint*> (&_finished_refcount))) {
/* We have run all the nodes that are at the `output' end of
the graph, so there is nothing more to do this time around.
*/
* the graph, so there is nothing more to do this time around.
*/
restart_cycle ();
}
}
}
void
Graph::restart_cycle()
{
// we are through. wakeup our caller.
// we are through. wakeup our caller.
again:
_callback_done_sem.signal ();
again:
_callback_done_sem.signal ();
/* Block until the a process callback triggers us */
_callback_start_sem.wait();
/* Block until the a process callback triggers us */
_callback_start_sem.wait();
if (!_threads_active) {
return;
}
if (!_threads_active) {
return;
}
prep ();
if (_graph_empty && _threads_active) {
goto again;
}
if (_graph_empty && _threads_active) {
goto again;
}
// returning will restart the cycle.
// starting with waking up the others.
// returning will restart the cycle.
// starting with waking up the others.
}
/** Rechain our stuff using a list of routes (which can be in any order) and
* a directed graph of their interconnections, which is guaranteed to be
* acyclic.
*/
void
Graph::rechain (boost::shared_ptr<RouteList> routelist, GraphEdges const & edges)
{
Glib::Threads::Mutex::Lock ls (_swap_mutex);
Glib::Threads::Mutex::Lock ls (_swap_mutex);
int chain = _setup_chain;
DEBUG_TRACE (DEBUG::Graph, string_compose ("============== setup %1\n", chain));
int chain = _setup_chain;
DEBUG_TRACE (DEBUG::Graph, string_compose ("============== setup %1\n", chain));
/* This will become the number of nodes that do not feed any other node;
once we have processed this number of those nodes, we have finished.
*/
_init_finished_refcount[chain] = 0;
* once we have processed this number of those nodes, we have finished.
*/
_init_finished_refcount[chain] = 0;
/* This will become a list of nodes that are not fed by another node, ie
those at the `input' end.
*/
_init_trigger_list[chain].clear();
* those at the `input' end.
*/
_init_trigger_list[chain].clear();
_nodes_rt[chain].clear();
_nodes_rt[chain].clear();
/* Clear things out, and make _nodes_rt[chain] a copy of routelist */
for (RouteList::iterator ri=routelist->begin(); ri!=routelist->end(); ri++) {
(*ri)->_init_refcount[chain] = 0;
(*ri)->_activation_set[chain].clear();
_nodes_rt[chain].push_back (*ri);
}
for (RouteList::iterator ri=routelist->begin(); ri!=routelist->end(); ri++) {
(*ri)->_init_refcount[chain] = 0;
(*ri)->_activation_set[chain].clear();
_nodes_rt[chain].push_back (*ri);
}
// now add refs for the connections.
// now add refs for the connections.
for (node_list_t::iterator ni = _nodes_rt[chain].begin(); ni != _nodes_rt[chain].end(); ni++) {
for (node_list_t::iterator ni = _nodes_rt[chain].begin(); ni != _nodes_rt[chain].end(); ni++) {
boost::shared_ptr<Route> r = boost::dynamic_pointer_cast<Route> (*ni);
boost::shared_ptr<Route> r = boost::dynamic_pointer_cast<Route> (*ni);
/* The routes that are directly fed by r */
set<GraphVertex> fed_from_r = edges.from (r);
@ -327,25 +326,25 @@ Graph::rechain (boost::shared_ptr<RouteList> routelist, GraphEdges const & edges
bool const has_input = !edges.has_none_to (r);
/* Increment the refcount of any route that we directly feed */
for (node_set_t::iterator ai = r->_activation_set[chain].begin(); ai != r->_activation_set[chain].end(); ai++) {
(*ai)->_init_refcount[chain] += 1;
}
for (node_set_t::iterator ai = r->_activation_set[chain].begin(); ai != r->_activation_set[chain].end(); ai++) {
(*ai)->_init_refcount[chain] += 1;
}
if (!has_input) {
if (!has_input) {
/* no input, so this node needs to be triggered initially to get things going */
_init_trigger_list[chain].push_back (*ni);
_init_trigger_list[chain].push_back (*ni);
}
if (!has_output) {
if (!has_output) {
/* no output, so this is one of the nodes that we can count off to decide
if we've finished
*/
_init_finished_refcount[chain] += 1;
* if we've finished
*/
_init_finished_refcount[chain] += 1;
}
}
}
_pending_chain = chain;
dump(chain);
_pending_chain = chain;
dump(chain);
}
/** Called by both the main thread and all helpers.
@ -354,15 +353,15 @@ Graph::rechain (boost::shared_ptr<RouteList> routelist, GraphEdges const & edges
bool
Graph::run_one()
{
GraphNode* to_run;
GraphNode* to_run;
pthread_mutex_lock (&_trigger_mutex);
if (_trigger_queue.size()) {
to_run = _trigger_queue.back();
_trigger_queue.pop_back();
} else {
to_run = 0;
}
pthread_mutex_lock (&_trigger_mutex);
if (_trigger_queue.size()) {
to_run = _trigger_queue.back();
_trigger_queue.pop_back();
} else {
to_run = 0;
}
/* the number of threads that are asleep */
int et = _execution_tokens;
@ -370,39 +369,39 @@ Graph::run_one()
int ts = _trigger_queue.size();
/* hence how many threads to wake up */
int wakeup = min (et, ts);
int wakeup = min (et, ts);
/* update the number of threads that will still be sleeping */
_execution_tokens -= wakeup;
_execution_tokens -= wakeup;
DEBUG_TRACE(DEBUG::ProcessThreads, string_compose ("%1 signals %2\n", pthread_name(), wakeup));
DEBUG_TRACE(DEBUG::ProcessThreads, string_compose ("%1 signals %2\n", pthread_name(), wakeup));
for (int i = 0; i < wakeup; i++) {
_execution_sem.signal ();
}
for (int i = 0; i < wakeup; i++) {
_execution_sem.signal ();
}
while (to_run == 0) {
_execution_tokens += 1;
pthread_mutex_unlock (&_trigger_mutex);
DEBUG_TRACE (DEBUG::ProcessThreads, string_compose ("%1 goes to sleep\n", pthread_name()));
_execution_sem.wait ();
if (!_threads_active) {
return true;
}
DEBUG_TRACE (DEBUG::ProcessThreads, string_compose ("%1 is awake\n", pthread_name()));
pthread_mutex_lock (&_trigger_mutex);
if (_trigger_queue.size()) {
to_run = _trigger_queue.back();
_trigger_queue.pop_back();
}
}
pthread_mutex_unlock (&_trigger_mutex);
while (to_run == 0) {
_execution_tokens += 1;
pthread_mutex_unlock (&_trigger_mutex);
DEBUG_TRACE (DEBUG::ProcessThreads, string_compose ("%1 goes to sleep\n", pthread_name()));
_execution_sem.wait ();
if (!_threads_active) {
return true;
}
DEBUG_TRACE (DEBUG::ProcessThreads, string_compose ("%1 is awake\n", pthread_name()));
pthread_mutex_lock (&_trigger_mutex);
if (_trigger_queue.size()) {
to_run = _trigger_queue.back();
_trigger_queue.pop_back();
}
}
pthread_mutex_unlock (&_trigger_mutex);
to_run->process();
to_run->finish (_current_chain);
to_run->process();
to_run->finish (_current_chain);
DEBUG_TRACE(DEBUG::ProcessThreads, string_compose ("%1 has finished run_one()\n", pthread_name()));
DEBUG_TRACE(DEBUG::ProcessThreads, string_compose ("%1 has finished run_one()\n", pthread_name()));
return !_threads_active;
return !_threads_active;
}
void
@ -467,26 +466,26 @@ void
Graph::dump (int chain)
{
#ifndef NDEBUG
node_list_t::iterator ni;
node_set_t::iterator ai;
node_list_t::iterator ni;
node_set_t::iterator ai;
chain = _pending_chain;
chain = _pending_chain;
DEBUG_TRACE (DEBUG::Graph, "--------------------------------------------Graph dump:\n");
for (ni=_nodes_rt[chain].begin(); ni!=_nodes_rt[chain].end(); ni++) {
boost::shared_ptr<Route> rp = boost::dynamic_pointer_cast<Route>( *ni);
DEBUG_TRACE (DEBUG::Graph, string_compose ("GraphNode: %1 refcount: %2\n", rp->name().c_str(), (*ni)->_init_refcount[chain]));
for (ai=(*ni)->_activation_set[chain].begin(); ai!=(*ni)->_activation_set[chain].end(); ai++) {
DEBUG_TRACE (DEBUG::Graph, string_compose (" triggers: %1\n", boost::dynamic_pointer_cast<Route>(*ai)->name().c_str()));
}
}
DEBUG_TRACE (DEBUG::Graph, "--------------------------------------------Graph dump:\n");
for (ni=_nodes_rt[chain].begin(); ni!=_nodes_rt[chain].end(); ni++) {
boost::shared_ptr<Route> rp = boost::dynamic_pointer_cast<Route>( *ni);
DEBUG_TRACE (DEBUG::Graph, string_compose ("GraphNode: %1 refcount: %2\n", rp->name().c_str(), (*ni)->_init_refcount[chain]));
for (ai=(*ni)->_activation_set[chain].begin(); ai!=(*ni)->_activation_set[chain].end(); ai++) {
DEBUG_TRACE (DEBUG::Graph, string_compose (" triggers: %1\n", boost::dynamic_pointer_cast<Route>(*ai)->name().c_str()));
}
}
DEBUG_TRACE (DEBUG::Graph, "------------- trigger list:\n");
for (ni=_init_trigger_list[chain].begin(); ni!=_init_trigger_list[chain].end(); ni++) {
DEBUG_TRACE (DEBUG::Graph, string_compose ("GraphNode: %1 refcount: %2\n", boost::dynamic_pointer_cast<Route>(*ni)->name().c_str(), (*ni)->_init_refcount[chain]));
}
DEBUG_TRACE (DEBUG::Graph, "------------- trigger list:\n");
for (ni=_init_trigger_list[chain].begin(); ni!=_init_trigger_list[chain].end(); ni++) {
DEBUG_TRACE (DEBUG::Graph, string_compose ("GraphNode: %1 refcount: %2\n", boost::dynamic_pointer_cast<Route>(*ni)->name().c_str(), (*ni)->_init_refcount[chain]));
}
DEBUG_TRACE (DEBUG::Graph, string_compose ("final activation refcount: %1\n", _init_finished_refcount[chain]));
DEBUG_TRACE (DEBUG::Graph, string_compose ("final activation refcount: %1\n", _init_finished_refcount[chain]));
#endif
}
@ -495,24 +494,24 @@ Graph::silent_process_routes (pframes_t nframes, framepos_t start_frame, framepo
{
if (!_threads_active) return 0;
_process_nframes = nframes;
_process_start_frame = start_frame;
_process_end_frame = end_frame;
_process_nframes = nframes;
_process_start_frame = start_frame;
_process_end_frame = end_frame;
_process_silent = true;
_process_noroll = false;
_process_retval = 0;
_process_need_butler = false;
_process_silent = true;
_process_noroll = false;
_process_retval = 0;
_process_need_butler = false;
if (!_graph_empty) {
if (!_graph_empty) {
DEBUG_TRACE(DEBUG::ProcessThreads, "wake graph for silent process\n");
_callback_start_sem.signal ();
_callback_done_sem.wait ();
}
_callback_start_sem.signal ();
_callback_done_sem.wait ();
}
need_butler = _process_need_butler;
need_butler = _process_need_butler;
return _process_retval;
return _process_retval;
}
int
@ -522,25 +521,25 @@ Graph::process_routes (pframes_t nframes, framepos_t start_frame, framepos_t end
if (!_threads_active) return 0;
_process_nframes = nframes;
_process_start_frame = start_frame;
_process_end_frame = end_frame;
_process_declick = declick;
_process_nframes = nframes;
_process_start_frame = start_frame;
_process_end_frame = end_frame;
_process_declick = declick;
_process_silent = false;
_process_noroll = false;
_process_retval = 0;
_process_need_butler = false;
_process_silent = false;
_process_noroll = false;
_process_retval = 0;
_process_need_butler = false;
DEBUG_TRACE(DEBUG::ProcessThreads, "wake graph for non-silent process\n");
_callback_start_sem.signal ();
_callback_start_sem.signal ();
_callback_done_sem.wait ();
DEBUG_TRACE (DEBUG::ProcessThreads, "graph execution complete\n");
need_butler = _process_need_butler;
need_butler = _process_need_butler;
return _process_retval;
return _process_retval;
}
int
@ -551,50 +550,50 @@ Graph::routes_no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end
if (!_threads_active) return 0;
_process_nframes = nframes;
_process_start_frame = start_frame;
_process_end_frame = end_frame;
_process_declick = declick;
_process_non_rt_pending = non_rt_pending;
_process_nframes = nframes;
_process_start_frame = start_frame;
_process_end_frame = end_frame;
_process_declick = declick;
_process_non_rt_pending = non_rt_pending;
_process_silent = false;
_process_noroll = true;
_process_retval = 0;
_process_need_butler = false;
_process_silent = false;
_process_noroll = true;
_process_retval = 0;
_process_need_butler = false;
DEBUG_TRACE(DEBUG::ProcessThreads, "wake graph for no-roll process\n");
_callback_start_sem.signal ();
_callback_done_sem.wait ();
_callback_start_sem.signal ();
_callback_done_sem.wait ();
return _process_retval;
return _process_retval;
}
void
Graph::process_one_route (Route* route)
{
bool need_butler = false;
int retval;
bool need_butler = false;
int retval;
assert (route);
assert (route);
DEBUG_TRACE (DEBUG::ProcessThreads, string_compose ("%1 runs route %2\n", pthread_name(), route->name()));
DEBUG_TRACE (DEBUG::ProcessThreads, string_compose ("%1 runs route %2\n", pthread_name(), route->name()));
if (_process_silent) {
retval = route->silent_roll (_process_nframes, _process_start_frame, _process_end_frame, need_butler);
} else if (_process_noroll) {
route->set_pending_declick (_process_declick);
retval = route->no_roll (_process_nframes, _process_start_frame, _process_end_frame, _process_non_rt_pending);
} else {
route->set_pending_declick (_process_declick);
retval = route->roll (_process_nframes, _process_start_frame, _process_end_frame, _process_declick, need_butler);
}
if (_process_silent) {
retval = route->silent_roll (_process_nframes, _process_start_frame, _process_end_frame, need_butler);
} else if (_process_noroll) {
route->set_pending_declick (_process_declick);
retval = route->no_roll (_process_nframes, _process_start_frame, _process_end_frame, _process_non_rt_pending);
} else {
route->set_pending_declick (_process_declick);
retval = route->roll (_process_nframes, _process_start_frame, _process_end_frame, _process_declick, need_butler);
}
if (retval) {
_process_retval = retval;
}
if (retval) {
_process_retval = retval;
}
if (need_butler) {
_process_need_butler = true;
}
if (need_butler) {
_process_need_butler = true;
}
}
bool