mirror of
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86 lines
2 KiB
C
86 lines
2 KiB
C
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/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2020 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "config.h"
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#include <assert.h>
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#include <errno.h>
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#include <stdint.h>
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#include <time.h>
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#include <unistd.h>
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/* Merely for code readability, e.g. timeout = us(100); */
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static inline uint64_t
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us(uint64_t us)
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{
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return us;
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}
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static inline uint64_t
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us2ms(uint64_t us)
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{
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return us / 1000;
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}
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static inline uint64_t
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ns2us(uint64_t ns)
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{
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return us(ns / 1000);
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}
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static inline uint64_t
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ms2us(uint64_t ms)
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{
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return us(ms * 1000);
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}
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static inline uint64_t
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s2us(uint64_t s)
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{
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return ms2us(s * 1000);
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}
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static inline int
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now(uint64_t *now_out)
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{
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struct timespec ts = { 0, 0 };
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assert(now_out != NULL);
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if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) {
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*now_out = s2us(ts.tv_sec) + ns2us(ts.tv_nsec);
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return 0;
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} else {
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return -errno;
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}
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}
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static inline void
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msleep(int32_t millis)
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{
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usleep(ms2us(millis));
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}
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