33 lines
803 B
C
33 lines
803 B
C
/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <ksched.h>
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#include <wait_q.h>
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#include <posix/time.h>
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s64_t timespec_to_timeoutms(const struct timespec *abstime)
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{
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s64_t milli_secs, secs, nsecs;
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struct timespec curtime;
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/* FIXME: Zephyr does have CLOCK_REALTIME to get time.
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* As per POSIX standard time should be calculated wrt CLOCK_REALTIME.
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* Zephyr deviates from POSIX 1003.1 standard on this aspect.
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*/
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clock_gettime(CLOCK_MONOTONIC, &curtime);
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secs = abstime->tv_sec - curtime.tv_sec;
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nsecs = abstime->tv_nsec - curtime.tv_nsec;
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if (secs < 0 || (secs == 0 && nsecs < NSEC_PER_MSEC)) {
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milli_secs = K_NO_WAIT;
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} else {
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milli_secs = secs * MSEC_PER_SEC + nsecs / NSEC_PER_MSEC;
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}
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return milli_secs;
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}
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