+++ /dev/null
-/*
- * shl - Timers
- *
- * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/*
- * Timers
- */
-
-#ifndef SHL_TIMER_H
-#define SHL_TIMER_H
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <time.h>
-
-struct shl_timer {
- struct timespec start;
- uint64_t elapsed;
-};
-
-static inline void shl_timer_reset(struct shl_timer *timer)
-{
- if (!timer)
- return;
-
- clock_gettime(CLOCK_MONOTONIC, &timer->start);
- timer->elapsed = 0;
-}
-
-static inline int shl_timer_new(struct shl_timer **out)
-{
- struct shl_timer *timer;
-
- if (!out)
- return -EINVAL;
-
- timer = malloc(sizeof(*timer));
- if (!timer)
- return -ENOMEM;
- memset(timer, 0, sizeof(*timer));
- shl_timer_reset(timer);
-
- *out = timer;
- return 0;
-}
-
-static inline void shl_timer_free(struct shl_timer *timer)
-{
- if (!timer)
- return;
-
- free(timer);
-}
-
-static inline void shl_timer_start(struct shl_timer *timer)
-{
- if (!timer)
- return;
-
- clock_gettime(CLOCK_MONOTONIC, &timer->start);
-}
-
-static inline uint64_t shl_timer_stop(struct shl_timer *timer)
-{
- struct timespec spec;
- int64_t off, nsec;
-
- if (!timer)
- return 0;
-
- clock_gettime(CLOCK_MONOTONIC, &spec);
- off = spec.tv_sec - timer->start.tv_sec;
- nsec = spec.tv_nsec - timer->start.tv_nsec;
- if (nsec < 0) {
- --off;
- nsec += 1000000000ULL;
- }
- off *= 1000000;
- off += nsec / 1000;
-
- memcpy(&timer->start, &spec, sizeof(spec));
- timer->elapsed += off;
- return timer->elapsed;
-}
-
-static inline uint64_t shl_timer_elapsed(struct shl_timer *timer)
-{
- struct timespec spec;
- int64_t off, nsec;
-
- if (!timer)
- return 0;
-
- clock_gettime(CLOCK_MONOTONIC, &spec);
- off = spec.tv_sec - timer->start.tv_sec;
- nsec = spec.tv_nsec - timer->start.tv_nsec;
- if (nsec < 0) {
- --off;
- nsec += 1000000000ULL;
- }
- off *= 1000000;
- off += nsec / 1000;
-
- return timer->elapsed + off;
-}
-
-#endif /* SHL_TIMER_H */