/* Simple timer for the Midnight Commander. Copyright (C) 2013-2020 Free Software Foundation, Inc. Written by: Andrew Borodin 2013 This file is part of the Midnight Commander. The Midnight Commander is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. The Midnight Commander is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /** \file * \brief Source: simple timer */ #include #include #include "lib/global.h" #include "lib/timer.h" /*** global variables ****************************************************************************/ /** * mc_timer_t: * * Opaque datatype that records a start time. * #mc_timer_t records a start time, and counts microseconds elapsed since * that time. **/ struct mc_timer_t { guint64 start; }; /*** file scope macro definitions ****************************************************************/ /*** file scope type declarations ****************************************************************/ /*** file scope variables ************************************************************************/ /*** file scope functions ************************************************************************/ /* --------------------------------------------------------------------------------------------- */ /*** public functions ****************************************************************************/ /* --------------------------------------------------------------------------------------------- */ /** * Creates a new timer, and starts timing. * * @return: a new #mc_timer_t. **/ mc_timer_t * mc_timer_new (void) { mc_timer_t *timer; struct timeval tv; timer = g_new (mc_timer_t, 1); gettimeofday (&tv, NULL); timer->start = (guint64) tv.tv_sec * G_USEC_PER_SEC + (guint64) tv.tv_usec; return timer; } /* --------------------------------------------------------------------------------------------- */ /** * Destroys a timer, freeing associated resources. * * @timer: an #mc_timer_t to destroy. **/ void mc_timer_destroy (mc_timer_t * timer) { g_free (timer); } /* --------------------------------------------------------------------------------------------- */ /** * Obtains the time since the timer was started. * * @timer: an #mc_timer_t. * * @return: microseconds elapsed, the time since the timer was started * **/ guint64 mc_timer_elapsed (const mc_timer_t * timer) { struct timeval tv; gettimeofday (&tv, NULL); return ((guint64) tv.tv_sec * G_USEC_PER_SEC + (guint64) tv.tv_usec - timer->start); } /* --------------------------------------------------------------------------------------------- */