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diff --git a/tests/ingen_bench.cpp b/tests/ingen_bench.cpp
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+/*
+ This file is part of Ingen.
+ Copyright 2007-2017 David Robillard <http://drobilla.net/>
+
+ Ingen is free software: you can redistribute it and/or modify it under the
+ terms of the GNU Affero General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or 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 Affero General Public License for details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with Ingen. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <cstdlib>
+#include <iostream>
+#include <string>
+#include <thread>
+
+#include "ingen/Clock.hpp"
+#include "ingen/Configuration.hpp"
+#include "ingen/EngineBase.hpp"
+#include "ingen/Interface.hpp"
+#include "ingen/Parser.hpp"
+#include "ingen/World.hpp"
+#include "ingen/runtime_paths.hpp"
+#include "ingen/types.hpp"
+
+#include "TestClient.hpp"
+#include "ingen_config.h"
+
+using namespace std;
+using namespace Ingen;
+
+World* world = NULL;
+
+static void
+ingen_try(bool cond, const char* msg)
+{
+ if (!cond) {
+ cerr << "ingen: Error: " << msg << endl;
+ delete world;
+ exit(EXIT_FAILURE);
+ }
+}
+
+static std::string
+real_path(const char* path)
+{
+ char* const c_real_path = realpath(path, NULL);
+ const std::string result(c_real_path ? c_real_path : "");
+ free(c_real_path);
+ return result;
+}
+
+int
+main(int argc, char** argv)
+{
+ set_bundle_path_from_code((void*)&ingen_try);
+
+ // Create world
+ try {
+ world = new World(NULL, NULL, NULL);
+ world->conf().add(
+ "output", "output", 'O', "File to write benchmark output",
+ Ingen::Configuration::SESSION, world->forge().String, Atom());
+ world->load_configuration(argc, argv);
+ } catch (std::exception& e) {
+ cout << "ingen: " << e.what() << endl;
+ return EXIT_FAILURE;
+ }
+
+ // Get mandatory command line arguments
+ const Atom& load = world->conf().option("load");
+ const Atom& out = world->conf().option("output");
+ if (!load.is_valid() || !out.is_valid()) {
+ cerr << "Usage: ingen_bench --load START_GRAPH --output OUT_FILE" << endl;
+ return EXIT_FAILURE;
+ }
+
+ // Get start graph and output file options
+ const std::string start_graph = real_path((const char*)load.get_body());
+ const std::string out_file = (const char*)out.get_body();
+ if (start_graph.empty()) {
+ cerr << "error: initial graph '"
+ << ((const char*)load.get_body())
+ << "' does not exist" << endl;
+ return EXIT_FAILURE;
+ }
+
+ // Load modules
+ ingen_try(world->load_module("server_profiled"),
+ "Unable to load server module");
+
+ // Initialise engine
+ ingen_try(bool(world->engine()),
+ "Unable to create engine");
+ world->engine()->init(48000.0, 4096, 4096);
+ world->engine()->activate();
+
+ // Load graph
+ if (!world->parser()->parse_file(world, world->interface().get(), start_graph)) {
+ cerr << "error: failed to load initial graph " << start_graph << endl;
+ return EXIT_FAILURE;
+ }
+ world->engine()->flush_events(std::chrono::milliseconds(20));
+
+ // Run benchmark
+ // TODO: Set up real-time scheduling for this and worker threads
+ Ingen::Clock clock;
+ const uint32_t n_test_frames = 1 << 20;
+ const uint32_t block_length = 4096;
+ const uint64_t t_start = clock.now_microseconds();
+ for (uint32_t i = 0; i < n_test_frames; i += block_length) {
+ world->engine()->advance(block_length);
+ world->engine()->run(block_length);
+ //world->engine()->main_iteration();
+ }
+ const uint64_t t_end = clock.now_microseconds();
+
+ // Write log output
+ FILE* log = fopen(out_file.c_str(), "a");
+ if (ftell(log) == 0) {
+ fprintf(log, "# n_threads\trun_time\treal_time\n");
+ }
+ fprintf(log, "%u\t%f\t%f\n",
+ world->conf().option("threads").get<int32_t>(),
+ (t_end - t_start) / 1000000.0,
+ (n_test_frames / 48000.0));
+ fclose(log);
+
+ // Shut down
+ world->engine()->deactivate();
+
+ delete world;
+ return EXIT_SUCCESS;
+}