From 6b3075d90d945d5e7e8fd4d28284ffd99dbeb82e Mon Sep 17 00:00:00 2001 From: Shinya Sato Date: Fri, 24 Sep 2021 16:42:54 +0900 Subject: v0.4.1 --- src/timer.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/timer.h (limited to 'src/timer.h') diff --git a/src/timer.h b/src/timer.h new file mode 100644 index 0000000..904bd6a --- /dev/null +++ b/src/timer.h @@ -0,0 +1,31 @@ +//https://github.com/zuqqhi2/numerical_simulation/blob/master/multithread/laytrace/timer.h + +#ifndef _H_TIMER +#define _H_TIMER + +#include +#include + +static inline +unsigned long long gettimeval(void) { + struct timeval tv; + struct timezone tz; + gettimeofday(&tv, &tz); + return ((unsigned long long)tv.tv_sec)*1000000+tv.tv_usec; +} + +static inline +void start_timer(unsigned long long *startt) { + *startt = gettimeval(); + return; +} + +static inline +unsigned long long stop_timer(unsigned long long *startt) { + unsigned long long stopt = gettimeval(); + return (stopt>=*startt)?(stopt-*startt):(stopt); +} + +#define print_timer(te) {printf("time of %s:%f[sec]\n", #te, (te*1.0e-3)/1000);} + +#endif -- cgit v1.2.3