diff options
| -rw-r--r-- | compat/timer.cpp | 119 | ||||
| -rw-r--r-- | compat/timer.hpp | 105 |
2 files changed, 139 insertions, 85 deletions
diff --git a/compat/timer.cpp b/compat/timer.cpp new file mode 100644 index 00000000..9ab0f721 --- /dev/null +++ b/compat/timer.cpp @@ -0,0 +1,119 @@ +/* Copyright (c) 2014-2015, Stanislaw Halik <sthalik@misaki.pl> + + * Permission to use, copy, modify, and/or distribute this + * software for any purpose with or without fee is hereby granted, + * provided that the above copyright notice and this permission + * notice appear in all copies. + */ + +#pragma once + +#include "timer.hpp" + +Timer::Timer() +{ + start(); +} + +void Timer::start() +{ + wrap_gettime(&state); +} + +// common + +void Timer::wrap_gettime(timespec* state) +{ +#if defined(_WIN32) || defined(__MACH__) + otr_clock_gettime(state); +#else + (void) clock_gettime(CLOCK_MONOTONIC, state); +#endif +} + +// nanoseconds + +long long Timer::elapsed_nsecs() const +{ + struct timespec cur = {}; + wrap_gettime(&cur); + return conv_nsecs(cur); +} + +long long Timer::conv_nsecs(const timespec& cur) const +{ + // this can and will overflow + return (cur.tv_sec - state.tv_sec) * 1000000000LL + (cur.tv_nsec - state.tv_nsec); +} + +// microseconds + +double Timer::elapsed_usecs() const +{ + struct timespec cur = {}; + wrap_gettime(&cur); + const long long nsecs = conv_nsecs(cur); + return nsecs * 1e-3; +} + +// milliseconds + +double Timer::elapsed_ms() const +{ + return elapsed_usecs() / 1000.; +} + +double Timer::elapsed_seconds() const +{ + return double(elapsed_nsecs() * 1e-9L); +} + +// -- +// platform-specific code starts here +// -- + +#if defined _WIN32 +LARGE_INTEGER Timer::otr_get_clock_frequency() +{ + LARGE_INTEGER freq = {}; + (void) QueryPerformanceFrequency(&freq); + return freq; +} + +void Timer::otr_clock_gettime(timespec* ts) +{ + static LARGE_INTEGER freq = otr_get_clock_frequency(); + + LARGE_INTEGER d; + + (void) QueryPerformanceCounter(&d); + + using ll = long long; + using ld = long double; + const long long part = ll(d.QuadPart / ld(freq.QuadPart) * 1000000000.L); + using t_s = decltype(ts->tv_sec); + using t_ns = decltype(ts->tv_nsec); + + ts->tv_sec = t_s(part / 1000000000LL); + ts->tv_nsec = t_ns(part % 1000000000LL); +} + +#elif defined __MACH__ +mach_timebase_info_data_t Timer::otr_get_mach_frequency() +{ + mach_timebase_info_data_t timebase_info; + (void) mach_timebase_info(&timebase_info); + return timebase_info; +} + +double Timer::otr_clock_gettime(timespec* ts) +{ + static mach_timebase_info_data_t timebase_info = otr_get_mach_frequency(); + uint64_t state, nsec; + state = mach_absolute_time(); + nsec = state * timebase_info.numer / timebase_info.denom; + ts->tv_sec = nsec / 1000000000L; + ts->tv_nsec = nsec % 1000000000L; +} + +#endif diff --git a/compat/timer.hpp b/compat/timer.hpp index ab1ec6b3..288bfb1d 100644 --- a/compat/timer.hpp +++ b/compat/timer.hpp @@ -7,7 +7,8 @@ */ #pragma once -#include <ctime> + +#include "export.hpp" #if defined (_WIN32) # include <windows.h> @@ -16,96 +17,30 @@ # include <mach/mach_time.h> #endif -class Timer +#include <ctime> +#include <tuple> + +class OPENTRACK_COMPAT_EXPORT Timer { -private: struct timespec state; - long long conv_nsecs(const struct timespec& cur) const - { - return (cur.tv_sec - state.tv_sec) * 1000000000LL + (cur.tv_nsec - state.tv_nsec); - } - long conv_usecs(const struct timespec& cur) const - { - return (cur.tv_sec - state.tv_sec) * 1000000LL + (cur.tv_nsec - state.tv_nsec) / 1000; - } + long long conv_nsecs(const struct timespec& cur) const; + static void otr_clock_gettime(struct timespec* ts); #ifdef _WIN32 - static LARGE_INTEGER otr_get_clock_frequency() - { - LARGE_INTEGER freq = {}; - (void) QueryPerformanceFrequency(&freq); - return freq; - } - static void otr_clock_gettime(struct timespec* ts) - { - static LARGE_INTEGER freq = otr_get_clock_frequency(); - - LARGE_INTEGER d; - - (void) QueryPerformanceCounter(&d); - - using ll = long long; - using ld = long double; - const long long part = ll(d.QuadPart / ld(freq.QuadPart) * 1000000000.L); - using t_s = decltype(ts->tv_sec); - using t_ns = decltype(ts->tv_nsec); - - ts->tv_sec = t_s(part / 1000000000LL); - ts->tv_nsec = t_ns(part % 1000000000LL); - } + static LARGE_INTEGER otr_get_clock_frequency(); #elif defined(__MACH__) - static mach_timebase_info_data_t otr_get_mach_frequency() - { - mach_timebase_info_data_t timebase_info; - (void) mach_timebase_info(&timebase_info); - return timebase_info; - } - static void otr_clock_gettime(struct timespec* ts) - { - static mach_timebase_info_data_t timebase_info = otr_get_mach_frequency(); - uint64_t state, nsec; - state = mach_absolute_time(); - nsec = state * timebase_info.numer / timebase_info.denom; - ts->tv_sec = nsec / 1000000000L; - ts->tv_nsec = nsec % 1000000000L; - } + static mach_timebase_info_data_t otr_get_mach_frequency(); #endif + static void wrap_gettime(struct timespec* state); + public: - Timer() - { - start(); - } - static inline void wrap_gettime(struct timespec* state) - { -#if defined(_WIN32) || defined(__MACH__) - otr_clock_gettime(state); -#else - (void) clock_gettime(CLOCK_MONOTONIC, state); -#endif - } + Timer(); - void start() - { - wrap_gettime(&state); - } - long long elapsed_nsecs() const - { - struct timespec cur = {}; - wrap_gettime(&cur); - return conv_nsecs(cur); - } - long elapsed_usecs() const - { - struct timespec cur = {}; - wrap_gettime(&cur); - return long(conv_usecs(cur)); - } - long elapsed_ms() const - { - return elapsed_usecs() / 1000L; - } - double elapsed_seconds() const - { - return double(elapsed_nsecs() * 1e-9L); - } + void start(); + long long elapsed_nsecs() const; + double elapsed_usecs() const; + double elapsed_ms() const; + double elapsed_seconds() const; }; + + |