89 строки
2.8 KiB
C
89 строки
2.8 KiB
C
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/*
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* librd - Rapid Development C library
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*
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* Copyright (c) 2012, Magnus Edenhill
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#ifndef TIMEVAL_TO_TIMESPEC
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#define TIMEVAL_TO_TIMESPEC(tv,ts) do { \
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(ts)->tv_sec = (tv)->tv_sec; \
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(ts)->tv_nsec = (tv)->tv_usec * 1000; \
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} while (0)
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#define TIMESPEC_TO_TIMEVAL(tv, ts) do { \
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(tv)->tv_sec = (ts)->tv_sec; \
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(tv)->tv_usec = (ts)->tv_nsec / 1000; \
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} while (0)
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#endif
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#define TIMESPEC_TO_TS(ts) \
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(((rd_ts_t)(ts)->tv_sec * 1000000LLU) + ((ts)->tv_nsec / 1000))
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#define TS_TO_TIMESPEC(ts,tsx) do { \
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(ts)->tv_sec = (tsx) / 1000000; \
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(ts)->tv_nsec = ((tsx) % 1000000) * 1000; \
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if ((ts)->tv_nsec > 1000000000LLU) { \
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(ts)->tv_sec++; \
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(ts)->tv_nsec -= 1000000000LLU; \
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} \
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} while (0)
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#define TIMESPEC_CLEAR(ts) ((ts)->tv_sec = (ts)->tv_nsec = 0LLU)
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static inline rd_ts_t rd_clock (void) RD_UNUSED;
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static inline rd_ts_t rd_clock (void) {
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#ifdef __APPLE__
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/* No monotonic clock on Darwin */
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return ((rd_ts_t)tv.tv_sec * 1000000LLU) + (rd_ts_t)tv.tv_usec;
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#else
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ((rd_ts_t)ts.tv_sec * 1000000LLU) +
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((rd_ts_t)ts.tv_nsec / 1000LLU);
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#endif
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}
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/**
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* Thread-safe version of ctime() that strips the trailing newline.
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*/
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static inline const char *rd_ctime (const time_t *t) RD_UNUSED;
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static inline const char *rd_ctime (const time_t *t) {
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static __thread char ret[27];
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ctime_r(t, ret);
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ret[25] = '\0';
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return ret;
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}
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