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+/*
+ This file is part of Ingen.
+ Copyright 2016 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/>.
+*/
+
+#ifndef INGEN_ENGINE_CLOCK_HPP
+#define INGEN_ENGINE_CLOCK_HPP
+
+#ifdef __MACH__
+# include <mach/mach.h>
+# include <mach/mach_time.h>
+#endif
+
+namespace Ingen {
+namespace Server {
+
+class Clock {
+public:
+#ifdef __MACH__
+
+ Clock() { mach_timebase_info(&_timebase); }
+
+ uint64_t now_microseconds() const {
+ const uint64_t now = mach_absolute_time();
+ return now * _timebase.numer / _timebase.denom / 1e3;
+ }
+
+private:
+ mach_timebase_info_data_t _timebase;
+
+#else
+
+ uint64_t now_microseconds() const {
+ struct timespec time;
+# if defined(CLOCK_MONOTONIC_RAW)
+ clock_gettime(CLOCK_MONOTONIC_RAW, &time);
+# else
+ clock_gettime(CLOCK_MONOTONIC, &time);
+# endif
+ return (uint64_t)time.tv_sec * 1e6 + (uint64_t)time.tv_nsec / 1e3;
+ }
+
+#endif
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_CLOCK_HPP