time.h

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/* -*- C -*- */
/*
 * Copyright (c) 2013-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#pragma once

#ifndef __MOTR_LIB_TIME_H__
#define __MOTR_LIB_TIME_H__

#include "lib/types.h"

typedef uint64_t m0_time_t;

enum {
        M0_TIME_ONE_SECOND = 1000000000ULL,
        M0_TIME_ONE_MSEC    = M0_TIME_ONE_SECOND / 1000,
};

#define TIME_F "[%" PRIu64 ":%09" PRIu64 "]"
#define TIME_P(t) m0_time_seconds(t), m0_time_nanoseconds(t)

extern const m0_time_t M0_TIME_IMMEDIATELY;
extern const m0_time_t M0_TIME_NEVER;

#ifdef __KERNEL__
#  include "lib/linux_kernel/time.h"
#else
#  include "lib/user_space/time.h"
#endif


extern const enum CLOCK_SOURCES M0_CLOCK_SOURCE;

extern m0_time_t                m0_time_monotonic_offset;

M0_INTERNAL m0_time_t m0_time_to_realtime(m0_time_t abs_time);

m0_time_t m0_time(uint64_t secs, long ns);

#define M0_MKTIME(secs, ns) \
        ((m0_time_t)((uint64_t)(secs) * M0_TIME_ONE_SECOND + (uint64_t)(ns)))

m0_time_t m0_time_now(void);

m0_time_t m0_time_from_now(uint64_t secs, long ns);

m0_time_t m0_time_add(const m0_time_t t1, const m0_time_t t2);

m0_time_t m0_time_sub(const m0_time_t t1, const m0_time_t t2);

int m0_nanosleep(const m0_time_t req, m0_time_t *rem);

uint64_t m0_time_seconds(const m0_time_t time);

uint64_t m0_time_nanoseconds(const m0_time_t time);

bool m0_time_is_in_past(m0_time_t time);

#endif /* __MOTR_LIB_TIME_H__ */

/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */