[lttng-tools.git] / src / common / compat / time.h

/*
 * Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com>
 *
 * SPDX-License-Identifier: MIT
 *
 */

#ifndef _COMPAT_TIME_H
#define _COMPAT_TIME_H

#include <time.h>

#ifdef __APPLE__

typedef uint64_t timer_t;

#include <mach/mach.h>
#include <mach/clock.h>
#include <errno.h>

#undef NSEC_PER_SEC
#undef NSEC_PER_MSEC
#undef NSEC_PER_USEC
#undef USEC_PER_SEC

#endif /* __APPLE__ */

/* macOS/OS X 10.12 (Sierra) and up provide clock_gettime() */
#if defined(__APPLE__) && !defined(LTTNG_HAVE_CLOCK_GETTIME)

typedef int clockid_t;
#define CLOCK_REALTIME CALENDAR_CLOCK
#define CLOCK_MONOTONIC SYSTEM_CLOCK

static inline
int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
{
	int ret = 0;
	clock_serv_t clock;
	mach_timespec_t now;

	if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC) {
		ret = -1;
		errno = EINVAL;
		goto end;
	}

	host_get_clock_service(mach_host_self(), clk_id, &clock);

	ret = clock_get_time(clock, &now);
	if (ret != KERN_SUCCESS) {
		ret = -1;
		goto deallocate;
	}

        tp->tv_sec = now.tv_sec;
        tp->tv_nsec = now.tv_nsec;

deallocate:
	mach_port_deallocate(mach_task_self(), clock);
end:
	return ret;
}

#else /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */

static inline
int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
{
	return clock_gettime(clk_id, tp);
}

#endif /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */

#endif /* _COMPAT_TIME_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com>
	3	*
	4	* SPDX-License-Identifier: MIT
	5	*
	6	*/
	7
	8	#ifndef _COMPAT_TIME_H
	9	#define _COMPAT_TIME_H
	10
	11	#include <time.h>
	12
	13	#ifdef __APPLE__
	14
	15	typedef uint64_t timer_t;
	16
	17	#include <mach/mach.h>
	18	#include <mach/clock.h>
	19	#include <errno.h>
	20
	21	#undef NSEC_PER_SEC
	22	#undef NSEC_PER_MSEC
	23	#undef NSEC_PER_USEC
	24	#undef USEC_PER_SEC
	25
	26	#endif /* __APPLE__ */
	27
	28	/* macOS/OS X 10.12 (Sierra) and up provide clock_gettime() */
	29	#if defined(__APPLE__) && !defined(LTTNG_HAVE_CLOCK_GETTIME)
	30
	31	typedef int clockid_t;
	32	#define CLOCK_REALTIME CALENDAR_CLOCK
	33	#define CLOCK_MONOTONIC SYSTEM_CLOCK
	34
	35	static inline
	36	int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
	37	{
	38	int ret = 0;
	39	clock_serv_t clock;
	40	mach_timespec_t now;
	41
	42	if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC) {
	43	ret = -1;
	44	errno = EINVAL;
	45	goto end;
	46	}
	47
	48	host_get_clock_service(mach_host_self(), clk_id, &clock);
	49
	50	ret = clock_get_time(clock, &now);
	51	if (ret != KERN_SUCCESS) {
	52	ret = -1;
	53	goto deallocate;
	54	}
	55
	56	tp->tv_sec = now.tv_sec;
	57	tp->tv_nsec = now.tv_nsec;
	58
	59	deallocate:
	60	mach_port_deallocate(mach_task_self(), clock);
	61	end:
	62	return ret;
	63	}
	64
	65	#else /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */
	66
	67	static inline
	68	int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
	69	{
	70	return clock_gettime(clk_id, tp);
	71	}
	72
	73	#endif /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */
	74
	75	#endif /* _COMPAT_TIME_H */