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Diffstat (limited to 'include/ingen/Clock.hpp')
-rw-r--r-- | include/ingen/Clock.hpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/ingen/Clock.hpp b/include/ingen/Clock.hpp new file mode 100644 index 00000000..27d8443d --- /dev/null +++ b/include/ingen/Clock.hpp @@ -0,0 +1,66 @@ +/* + This file is part of Ingen. + Copyright 2016-2017 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/>. +*/ + +#ifndef INGEN_ENGINE_CLOCK_HPP +#define INGEN_ENGINE_CLOCK_HPP + +#ifdef __MACH__ +# include <mach/mach.h> +# include <mach/mach_time.h> +#else +# include <ctime> +# include <sys/time.h> +#endif + +#include <cstdint> + +namespace ingen { + +class Clock { +public: +#ifdef __MACH__ + + Clock() { mach_timebase_info(&_timebase); } + + inline 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 + + inline uint64_t now_microseconds() const { + struct timespec time{}; + clock_gettime(_clock, &time); + return static_cast<uint64_t>(time.tv_sec) * 1e6 + + static_cast<uint64_t>(time.tv_nsec) / 1e3; + } + +private: +# if defined(CLOCK_MONOTONIC_RAW) + const clockid_t _clock = CLOCK_MONOTONIC_RAW; +# else + const clockid_t _clock = CLOCK_MONOTONIC; +# endif +#endif +}; + +} // namespace ingen + +#endif // INGEN_ENGINE_CLOCK_HPP |