93c553c1bc
This moves the timers to SHL and removes the old static_misc header and source. They are no longer needed. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
/*
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* shl - Timers
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*
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* Copyright (c) 2011-2012 David Herrmann <dh.herrmann@googlemail.com>
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* Copyright (c) 2011 University of Tuebingen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Timers
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*/
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#ifndef SHL_TIMER_H
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#define SHL_TIMER_H
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#include <errno.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <time.h>
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struct shl_timer {
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struct timespec start;
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uint64_t elapsed;
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};
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static inline void shl_timer_reset(struct shl_timer *timer)
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{
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if (!timer)
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return;
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clock_gettime(CLOCK_MONOTONIC, &timer->start);
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timer->elapsed = 0;
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}
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static inline int shl_timer_new(struct shl_timer **out)
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{
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struct shl_timer *timer;
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if (!out)
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return -EINVAL;
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timer = malloc(sizeof(*timer));
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if (!timer)
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return -ENOMEM;
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memset(timer, 0, sizeof(*timer));
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shl_timer_reset(timer);
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*out = timer;
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return 0;
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}
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static inline void shl_timer_free(struct shl_timer *timer)
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{
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if (!timer)
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return;
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free(timer);
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}
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static inline void shl_timer_start(struct shl_timer *timer)
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{
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if (!timer)
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return;
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clock_gettime(CLOCK_MONOTONIC, &timer->start);
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}
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static inline uint64_t shl_timer_stop(struct shl_timer *timer)
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{
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struct timespec spec;
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int64_t off, nsec;
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if (!timer)
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return 0;
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clock_gettime(CLOCK_MONOTONIC, &spec);
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off = spec.tv_sec - timer->start.tv_sec;
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nsec = spec.tv_nsec - timer->start.tv_nsec;
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if (nsec < 0) {
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--off;
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nsec += 1000000000ULL;
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}
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off *= 1000000;
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off += nsec / 1000;
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memcpy(&timer->start, &spec, sizeof(spec));
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timer->elapsed += off;
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return timer->elapsed;
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}
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static inline uint64_t shl_timer_elapsed(struct shl_timer *timer)
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{
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struct timespec spec;
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int64_t off, nsec;
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if (!timer)
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return 0;
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clock_gettime(CLOCK_MONOTONIC, &spec);
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off = spec.tv_sec - timer->start.tv_sec;
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nsec = spec.tv_nsec - timer->start.tv_nsec;
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if (nsec < 0) {
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--off;
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nsec += 1000000000ULL;
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}
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off *= 1000000;
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off += nsec / 1000;
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return timer->elapsed + off;
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}
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#endif /* SHL_TIMER_H */
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