4a5c4e5f73
The POSIX_CLOCK option does not correspond to any standard option. It was used to active features of several distinct POSIX Options and Option Groups, which complicated API and application configuration as a result. POSIX_CLOCK is being deprecated in order to ensure that Zephyr's POSIX Kconfig variables correspond to those defined in the specification, as of IEEE 1003.1-2017. Additionally, CONFIG_TIMER is being deprecated because it does not match the corresponding POSIX Option (_POSIX_TIMERS). With this deprecation, we introduce the following Kconfig options that map directly to standard POSIX Option Groups by simply removing "CONFIG_": * CONFIG_POSIX_TIMERS Similarly, we introduce the following Kconfig options that map directly to standard POSIX Options by simply removing "CONFIG": * CONFIG_POSIX_CLOCK_SELECTION * CONFIG_POSIX_CPUTIME * CONFIG_POSIX_DELAYTIMER_MAX * CONFIG_POSIX_MONOTONIC_CLOCK * CONFIG_POSIX_TIMEOUTS * CONFIG_POSIX_TIMER_MAX In order to maintain parity with the current feature set, we introduce the following Kconfig options that map directly to standard POSIX Option Groups by simply removing "CONFIG_": * CONFIG_POSIX_MULTI_PROCESS - sleep() Similarly, in order to maintain parity with the current feature set, we introduce the following additional Kconfig options that map directly to standard POSIX Options by simply removing "CONFIG": * CONFIG_XSI_SINGLE_PROCESS - gettimeofday() Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
33 lines
853 B
C
33 lines
853 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 <zephyr/kernel.h>
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#include <ksched.h>
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#include <zephyr/posix/time.h>
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#ifdef CONFIG_POSIX_TIMERS
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int64_t timespec_to_timeoutms(const struct timespec *abstime)
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{
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int64_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 = 0;
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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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#endif /* CONFIG_POSIX_TIMERS */
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