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

/*
 * Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef _COMPAT_TIME_H
#define _COMPAT_TIME_H

#include <time.h>

#ifdef __APPLE__
typedef uint64_t timer_t;
typedef int clockid_t;

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

#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__ */

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

#endif /* __APPLE__ */

#endif /* _COMPAT_TIME_H */
Commit	Line	Data
389fbf04 MJ	1	/*
	2	* Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com>
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to deal
	6	* in the Software without restriction, including without limitation the rights
	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	8	* copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	20	* SOFTWARE.
	21	*/
	22
	23	#ifndef _COMPAT_TIME_H
	24	#define _COMPAT_TIME_H
	25
	26	#include <time.h>
	27
	28	#ifdef __APPLE__
	29	typedef uint64_t timer_t;
	30	typedef int clockid_t;
	31
	32	#include <mach/mach.h>
	33	#include <mach/clock.h>
	34
	35	#define CLOCK_REALTIME CALENDAR_CLOCK
	36	#define CLOCK_MONOTONIC SYSTEM_CLOCK
	37
	38	static inline
	39	int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
	40	{
	41	int ret = 0;
	42	clock_serv_t clock;
	43	mach_timespec_t now;
	44
	45	if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC) {
	46	ret = -1;
	47	errno = EINVAL;
	48	goto end;
	49	}
	50
	51	host_get_clock_service(mach_host_self(), clk_id, &clock);
	52
	53	ret = clock_get_time(clock, &now);
	54	if (ret != KERN_SUCCESS) {
	55	ret = -1;
	56	goto deallocate;
	57	}
	58
	59	tp->tv_sec = now.tv_sec;
	60	tp->tv_nsec = now.tv_nsec;
	61
	62	deallocate:
	63	mach_port_deallocate(mach_task_self(), clock);
	64	end:
65	return ret;
66	}
67
68	#else /* __APPLE__ */
69
70	static inline
71	int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp)
72	{
73	return clock_gettime(clk_id, tp);
74	}
75
76	#endif /* __APPLE__ */
77
78	#endif /* _COMPAT_TIME_H */