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/* libhw/host_util.h - Utilities for GNU/Linux hosts
*
* Copyright (C) 2024 Luke T. Shumaker <lukeshu@lukeshu.com>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#ifndef _LIBHW_HOST_SIGRT_H_
#define _LIBHW_HOST_SIGRT_H_
#include <time.h> /* for struct timespec */
#include <sys/time.h> /* for struct timeval */
#include <libhw/generic/alarmclock.h> /* for {X}S_PER_S */
int host_sigrt_alloc(void);
typedef struct timeval host_us_time_t;
typedef struct timespec host_ns_time_t;
static inline host_us_time_t ns_to_host_us_time(uint64_t time_ns) {
host_us_time_t ret;
ret.tv_sec = time_ns
/NS_PER_S;
ret.tv_usec = (time_ns - ((uint64_t)ret.tv_sec)*NS_PER_S)
/(NS_PER_S/US_PER_S);
return ret;
}
static inline host_ns_time_t ns_to_host_ns_time(uint64_t time_ns) {
host_ns_time_t ret;
ret.tv_sec = time_ns
/NS_PER_S;
ret.tv_nsec = time_ns - ((uint64_t)ret.tv_sec)*NS_PER_S;
return ret;
}
static inline uint64_t ns_from_host_us_time(host_us_time_t host_time) {
return (((uint64_t)host_time.tv_sec) * NS_PER_S) +
((uint64_t)host_time.tv_usec * (NS_PER_S/US_PER_S));
}
static inline uint64_t ns_from_host_ns_time(host_ns_time_t host_time) {
return (((uint64_t)host_time.tv_sec) * NS_PER_S) +
((uint64_t)host_time.tv_nsec);
}
#endif /* _LIBHW_HOST_SIGRT_H_ */
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