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-rw-r--r--src/server/MessageContext.cpp126
1 files changed, 126 insertions, 0 deletions
diff --git a/src/server/MessageContext.cpp b/src/server/MessageContext.cpp
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+++ b/src/server/MessageContext.cpp
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+/* This file is part of Ingen.
+ * Copyright 2008-2011 David Robillard <http://drobilla.net>
+ *
+ * Ingen is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <algorithm>
+#include "lv2/lv2plug.in/ns/ext/contexts/contexts.h"
+#include "raul/log.hpp"
+#include "ConnectionImpl.hpp"
+#include "Engine.hpp"
+#include "MessageContext.hpp"
+#include "NodeImpl.hpp"
+#include "PatchImpl.hpp"
+#include "PortImpl.hpp"
+#include "ProcessContext.hpp"
+#include "ThreadManager.hpp"
+
+using namespace std;
+using namespace Raul;
+
+namespace Ingen {
+namespace Server {
+
+void
+MessageContext::run(NodeImpl* node, FrameTime time)
+{
+ if (ThreadManager::thread_is(THREAD_PROCESS)) {
+ const Request r(time, node);
+ _requests.write(sizeof(Request), &r);
+ // signal() will be called at the end of this process cycle
+ } else {
+ assert(node);
+ Glib::Mutex::Lock lock(_mutex);
+ _non_rt_request = Request(time, node);
+ _sem.post();
+ _cond.wait(_mutex);
+ }
+}
+
+void
+MessageContext::_run()
+{
+ Request req;
+
+ while (true) {
+ _sem.wait();
+
+ // Enqueue a request from the pre-process thread
+ {
+ Glib::Mutex::Lock lock(_mutex);
+ const Request req = _non_rt_request;
+ if (req.node) {
+ _queue.insert(req);
+ _end_time = std::max(_end_time, req.time);
+ _cond.broadcast(); // Notify caller we got the message
+ }
+ }
+
+ // Enqueue (and thereby sort) requests from audio thread
+ while (has_requests()) {
+ _requests.full_read(sizeof(Request), &req);
+ if (req.node) {
+ _queue.insert(req);
+ } else {
+ _end_time = req.time;
+ break;
+ }
+ }
+
+ // Run events in time increasing order
+ // Note that executing nodes may insert further events into the queue
+ while (!_queue.empty()) {
+ const Request req = *_queue.begin();
+
+ // Break if all events during this cycle have been consumed
+ // (the queue may contain generated events with later times)
+ if (req.time > _end_time) {
+ break;
+ }
+
+ _queue.erase(_queue.begin());
+ execute(req);
+ }
+ }
+}
+
+void
+MessageContext::execute(const Request& req)
+{
+ NodeImpl* node = req.node;
+ node->message_run(*this);
+
+ void* valid_ports = node->valid_ports();
+ PatchImpl* patch = node->parent_patch();
+
+ for (uint32_t i = 0; i < node->num_ports(); ++i) {
+ PortImpl* p = node->port_impl(i);
+ if (p->is_output() && p->context() == Context::MESSAGE &&
+ lv2_contexts_port_is_valid(valid_ports, i)) {
+ PatchImpl::Connections& wires = patch->connections();
+ for (PatchImpl::Connections::iterator c = wires.begin(); c != wires.end(); ++c) {
+ ConnectionImpl* ci = (ConnectionImpl*)c->second.get();
+ if (ci->src_port() == p && ci->dst_port()->context() == Context::MESSAGE) {
+ _queue.insert(Request(req.time, ci->dst_port()->parent_node()));
+ }
+ }
+ }
+ }
+
+ node->reset_valid_ports();
+}
+
+} // namespace Server
+} // namespace Ingen