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diff --git a/src/server/CompiledPatch.hpp b/src/server/CompiledPatch.hpp
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+++ b/src/server/CompiledPatch.hpp
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+/* This file is part of Ingen.
+ * Copyright 2007-2011 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
+ */
+
+#ifndef INGEN_ENGINE_COMPILEDPATCH_HPP
+#define INGEN_ENGINE_COMPILEDPATCH_HPP
+
+#include <vector>
+#include "raul/List.hpp"
+#include "raul/Deletable.hpp"
+#include <boost/utility.hpp>
+
+namespace Ingen {
+namespace Server {
+
+class ConnectionImpl;
+
+/** All information required about a node to execute it in an audio thread.
+ */
+struct CompiledNode {
+	CompiledNode(NodeImpl* n, size_t np, Raul::List<NodeImpl*>* d)
+		: _node(n), _n_providers(np)
+	{
+		// Copy to a vector for maximum iteration speed and cache optimization
+		// (Need to take a copy anyway)
+
+		_dependants.reserve(d->size());
+		for (Raul::List<NodeImpl*>::iterator i = d->begin(); i != d->end(); ++i)
+			_dependants.push_back(*i);
+	}
+
+	NodeImpl*                     node()        const { return _node; }
+	size_t                        n_providers() const { return _n_providers; }
+	const std::vector<NodeImpl*>& dependants()  const { return _dependants; }
+
+private:
+	NodeImpl*              _node;
+	size_t                 _n_providers; ///< Number of input ready signals to trigger run
+	std::vector<NodeImpl*> _dependants; ///< Nodes this one's output ports are connected to
+};
+
+/** A patch ``compiled'' into a flat structure with the correct order so
+ * the audio thread(s) can execute it without threading problems (since
+ * the preprocessor thread modifies the graph).
+ *
+ * The nodes contained here are sorted in the order they must be executed.
+ * The parallel processing algorithm guarantees no node will be executed
+ * before its providers, using this order as well as semaphores.
+ */
+struct CompiledPatch : public std::vector<CompiledNode>
+                     , public Raul::Deletable
+                     , public boost::noncopyable
+{
+	typedef std::vector<ConnectionImpl*> QueuedConnections;
+
+	/** All (audio context => other context) connections */
+	std::vector<ConnectionImpl*> queued_connections;
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_COMPILEDPATCH_HPP