diff options
| -rw-r--r-- | CMakeLists.txt | 4 | ||||
| -rw-r--r-- | facetracknoir/timer.hpp | 67 |
2 files changed, 71 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 40682474..7e101bad 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -526,6 +526,10 @@ endif() link_with_dinput8(opentrack) +if(CMAKE_SYSTEM STREQUAL LINUX) + link_libraries(rt) +endif() + if(MSVC) SET_TARGET_PROPERTIES(opentrack PROPERTIES LINK_FLAGS "/ENTRY:mainCRTStartup") endif() diff --git a/facetracknoir/timer.hpp b/facetracknoir/timer.hpp new file mode 100644 index 00000000..306bcaa7 --- /dev/null +++ b/facetracknoir/timer.hpp @@ -0,0 +1,67 @@ +#pragma once +#include <time.h> +#if defined (_WIN32) +#include <windows.h> +static inline void clock_gettime(int, struct timespec* ts) +{ + static LARGE_INTEGER freq = 0; + + if (!freq) + (void) QueryPerformanceFrequency(&freq); + + freq.QuadPart /= 1000000; + + LARGE_INTEGER d; + + (void) QueryPerformanceCounter(&d); + + d.QuadPart = d.QuadPart / freq.QuadPart; + + ts->tv_sec = d.QuadPart / 1000000; + ts->tv_nsec = d.QuadPart % 1000000; +} + +#else +# if defined(__MACH__) +# define CLOCK_MONOTONIC 0 +# include <inttypes.h> +# include <mach/mach_time.h> +static inline void clock_gettime(int, struct timespec* ts) +{ + uint64_t state, nsec; + static mach_timebase_info_data_t sTimebaseInfo; + if ( sTimebaseInfo.denom == 0 ) { + (void) mach_timebase_info(&sTimebaseInfo); + } + state = mach_absolute_time(); + nsec = elapsed * sTimebaseInfo.numer / sTimebaseInfo.denom; + ts->tv_sec = nsec / 1000000; + ts->tv_nsec = nsec % 1000000; +} +# else +class Timer { +private: + struct timespec state; + int conv(const struct timespec& cur) + { + return (cur.tv_sec - state.tv_sec) * 1000L + (cur.tv_nsec - state.tv_nsec) / 1000000L; + } +public: + Timer() { + start(); + } + int start() { + struct timespec cur; + (void) clock_gettime(CLOCK_MONOTONIC, &cur); + int ret = conv(cur); + state = cur; + return ret; + } + int elapsed() { + struct timespec cur; + (void) clock_gettime(CLOCK_MONOTONIC, &cur); + return conv(cur); + } +}; +# endif +#endif |