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authorDavid Robillard <d@drobilla.net>2016-10-01 20:28:20 -0400
committerDavid Robillard <d@drobilla.net>2016-10-02 12:27:23 -0400
commit3433418d7698060b4307a206c086bb30a45f566b (patch)
treecf9d6790a61b09d7204a7c3b522145828b8f0c7c /src/server/Clock.hpp
parenta2cb63943b9e720be55e175da7c970c8dc3833d9 (diff)
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Implement microsecond clock for Linux and OSX
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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