diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/time.h')
-rw-r--r-- | sys/compat/linuxkpi/common/include/linux/time.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/time.h b/sys/compat/linuxkpi/common/include/linux/time.h new file mode 100644 index 000000000000..27516a4c917e --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/time.h @@ -0,0 +1,131 @@ +/*- + * Copyright (c) 2014-2015 François Tigeot + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ +#ifndef _LINUX_TIME_H_ +#define _LINUX_TIME_H_ + +#define NSEC_PER_USEC 1000L +#define NSEC_PER_SEC 1000000000L + +#include <sys/time.h> +#include <sys/stdint.h> + +static inline struct timeval +ns_to_timeval(const int64_t nsec) +{ + struct timeval tv; + long rem; + + if (nsec == 0) { + tv.tv_sec = 0; + tv.tv_usec = 0; + return (tv); + } + + tv.tv_sec = nsec / NSEC_PER_SEC; + rem = nsec % NSEC_PER_SEC; + if (rem < 0) { + tv.tv_sec--; + rem += NSEC_PER_SEC; + } + tv.tv_usec = rem / 1000; + return (tv); +} + +static inline int64_t +timeval_to_ns(const struct timeval *tv) +{ + return ((int64_t)tv->tv_sec * NSEC_PER_SEC) + + tv->tv_usec * NSEC_PER_USEC; +} + +#define getrawmonotonic(ts) nanouptime(ts) + +static inline struct timespec +timespec_sub(struct timespec lhs, struct timespec rhs) +{ + struct timespec ts; + + ts.tv_sec = lhs.tv_sec; + ts.tv_nsec = lhs.tv_nsec; + timespecsub(&ts, &rhs); + + return ts; +} + +static inline void +set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec) +{ + /* XXX: this doesn't actually normalize anything */ + ts->tv_sec = sec; + ts->tv_nsec = nsec; +} + +static inline int64_t +timespec_to_ns(const struct timespec *ts) +{ + return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec); +} + +static inline struct timespec +ns_to_timespec(const int64_t nsec) +{ + struct timespec ts; + int32_t rem; + + if (nsec == 0) { + ts.tv_sec = 0; + ts.tv_nsec = 0; + return (ts); + } + + ts.tv_sec = nsec / NSEC_PER_SEC; + rem = nsec % NSEC_PER_SEC; + if (rem < 0) { + ts.tv_sec--; + rem += NSEC_PER_SEC; + } + ts.tv_nsec = rem; + return (ts); +} + +static inline int +timespec_valid(const struct timespec *ts) +{ + if (ts->tv_sec < 0 || ts->tv_sec > 100000000 || + ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000) + return (0); + return (1); +} + +static inline unsigned long +get_seconds(void) +{ + return time_uptime; +} + +#endif /* _LINUX_TIME_H_ */ |