diff options
Diffstat (limited to 'zen/tick_count.h')
| -rw-r--r-- | zen/tick_count.h | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/zen/tick_count.h b/zen/tick_count.h index 04ac0902..be4839ca 100644 --- a/zen/tick_count.h +++ b/zen/tick_count.h @@ -8,9 +8,18 @@ #define ZEN_TICK_COUNT_HEADER_3807326 #include <cstdint> -//#include <algorithm> #include "type_traits.h" #include "basic_math.h" +#ifdef FFS_WIN +#include "win.h" //includes "windows.h" + +#elif defined FFS_LINUX +#include <time.h> //Posix ::clock_gettime() + +#elif defined FFS_MAC +#include <mach/mach_time.h> +#endif +//#include <algorithm> //#include "assert_static.h" //#include <cmath> //template <class T> inline @@ -20,11 +29,6 @@ //} -#ifdef FFS_WIN -#include "win.h" //includes "windows.h" -#elif defined FFS_LINUX -#include <time.h> //Posix ::clock_gettime() -#endif namespace zen { @@ -57,6 +61,8 @@ public: typedef LARGE_INTEGER NativeVal; #elif defined FFS_LINUX typedef timespec NativeVal; +#elif defined FFS_MAC + typedef uint64_t NativeVal; #endif TickVal() : val_() {} @@ -67,7 +73,6 @@ public: { #ifdef FFS_WIN return numeric::dist(lhs.val_.QuadPart, rhs.val_.QuadPart); //std::abs(a - b) can lead to overflow! - #elif defined FFS_LINUX const auto distSec = numeric::dist(lhs.val_.tv_sec, rhs.val_.tv_sec); const auto distNsec = numeric::dist(lhs.val_.tv_nsec, rhs.val_.tv_nsec); @@ -75,11 +80,13 @@ public: if (distSec > (std::numeric_limits<std::int64_t>::max() - distNsec) / 1000000000) //truncate instead of overflow! return std::numeric_limits<std::int64_t>::max(); return distSec * 1000000000 + distNsec; +#elif defined FFS_MAC + return numeric::dist(lhs.val_, rhs.val_); #endif } inline friend - bool operator<(const TickVal& lhs, const TickVal& rhs) //evaluate directly rather than reuse operator- + bool operator<(const TickVal& lhs, const TickVal& rhs) { #ifdef FFS_WIN return lhs.val_.QuadPart < rhs.val_.QuadPart; @@ -87,6 +94,8 @@ public: if (lhs.val_.tv_sec != rhs.val_.tv_sec) return lhs.val_.tv_sec < rhs.val_.tv_sec; return lhs.val_.tv_nsec < rhs.val_.tv_nsec; +#elif defined FFS_MAC + return lhs.val_ < rhs.val_; #endif } @@ -109,6 +118,12 @@ std::int64_t ticksPerSec() //return 0 on error #elif defined FFS_LINUX return 1000000000; //precision: nanoseconds + +#elif defined FFS_MAC + mach_timebase_info_data_t tbi = {}; + if (::mach_timebase_info(&tbi) != KERN_SUCCESS) + return 0; + return 1000000000 * tbi.denom / tbi.numer; #endif } @@ -126,6 +141,9 @@ TickVal getTicks() //return 0 on error timespec now = {}; if (::clock_gettime(CLOCK_MONOTONIC_RAW, &now) != 0) //CLOCK_MONOTONIC measures time reliably across processors! return TickVal(); + +#elif defined FFS_MAC + uint64_t now = ::mach_absolute_time(); //can this call fail??? #endif return TickVal(now); } |