mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-22 20:36:50 +03:00
115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
/*
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Simple timer for the Midnight Commander.
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Copyright (C) 2013-2016
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Free Software Foundation, Inc.
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Written by:
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Andrew Borodin 2013
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This file is part of the Midnight Commander.
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The Midnight Commander is free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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The Midnight Commander is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* \brief Source: simple timer
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*/
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#include <config.h>
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#include <sys/time.h>
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#include "lib/global.h"
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#include "lib/timer.h"
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/*** global variables ****************************************************************************/
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/**
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* mc_timer_t:
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*
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* Opaque datatype that records a start time.
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* #mc_timer_t records a start time, and counts microseconds elapsed since
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* that time.
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**/
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struct mc_timer_t
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{
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guint64 start;
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};
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/*** file scope macro definitions ****************************************************************/
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/*** file scope type declarations ****************************************************************/
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/*** file scope variables ************************************************************************/
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/*** file scope functions ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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/*** public functions ****************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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/**
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* Creates a new timer, and starts timing.
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*
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* @return: a new #mc_timer_t.
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**/
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mc_timer_t *
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mc_timer_new (void)
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{
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mc_timer_t *timer;
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struct timeval tv;
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timer = g_new (mc_timer_t, 1);
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gettimeofday (&tv, NULL);
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timer->start = (guint64) tv.tv_sec * G_USEC_PER_SEC + (guint64) tv.tv_usec;
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return timer;
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}
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/* --------------------------------------------------------------------------------------------- */
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/**
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* Destroys a timer, freeing associated resources.
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*
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* @timer: an #mc_timer_t to destroy.
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**/
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void
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mc_timer_destroy (mc_timer_t * timer)
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{
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g_free (timer);
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}
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/* --------------------------------------------------------------------------------------------- */
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/**
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* Obtains the time since the timer was started.
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*
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* @timer: an #mc_timer_t.
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*
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* @return: microseconds elapsed, the time since the timer was started
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*
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**/
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guint64
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mc_timer_elapsed (const mc_timer_t * timer)
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{
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struct timeval tv;
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gettimeofday (&tv, NULL);
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return ((guint64) tv.tv_sec * G_USEC_PER_SEC + (guint64) tv.tv_usec - timer->start);
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}
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/* --------------------------------------------------------------------------------------------- */
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