From a94002115beaf989aec4c9b2a746ac8d19440e57 Mon Sep 17 00:00:00 2001 From: Yusuke Endoh Date: Wed, 23 Mar 2022 18:41:36 +0900 Subject: thread.c: Move double2hrtime and hrtime2double to hrtime.h ... to make them available in other places than thread.c --- hrtime.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'hrtime.h') diff --git a/hrtime.h b/hrtime.h index f133bdb1ac..4ac3d54723 100644 --- a/hrtime.h +++ b/hrtime.h @@ -165,4 +165,52 @@ rb_hrtime2timeval(struct timeval *tv, const rb_hrtime_t *hrt) } return 0; } + +#include "internal/warnings.h" +#include "internal/time.h" + +/* + * Back when we used "struct timeval", not all platforms implemented + * tv_sec as time_t. Nowadays we use "struct timespec" and tv_sec + * seems to be implemented more consistently across platforms. + * At least other parts of our code hasn't had to deal with non-time_t + * tv_sec in timespec... + */ +#define TIMESPEC_SEC_MAX TIMET_MAX +#define TIMESPEC_SEC_MIN TIMET_MIN + +COMPILER_WARNING_PUSH +#if __has_warning("-Wimplicit-int-float-conversion") +COMPILER_WARNING_IGNORED(-Wimplicit-int-float-conversion) +#elif defined(_MSC_VER) +/* C4305: 'initializing': truncation from '__int64' to 'const double' */ +COMPILER_WARNING_IGNORED(4305) +#endif +static const double TIMESPEC_SEC_MAX_as_double = TIMESPEC_SEC_MAX; +COMPILER_WARNING_POP + +static inline rb_hrtime_t * +double2hrtime(rb_hrtime_t *hrt, double d) +{ + /* assume timespec.tv_sec has same signedness as time_t */ + const double TIMESPEC_SEC_MAX_PLUS_ONE = 2.0 * (TIMESPEC_SEC_MAX_as_double / 2.0 + 1.0); + + if (TIMESPEC_SEC_MAX_PLUS_ONE <= d) { + return NULL; + } + else if (d <= 0) { + *hrt = 0; + } + else { + *hrt = (rb_hrtime_t)(d * (double)RB_HRTIME_PER_SEC); + } + return hrt; +} + +static inline double +hrtime2double(rb_hrtime_t hrt) +{ + return (double)hrt / (double)RB_HRTIME_PER_SEC; +} + #endif /* RB_HRTIME_H */ -- cgit v1.2.3