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/*! @file gpr_timer.c
*
* @brief Implementation of a high-resolution performance timer.
*
* @version 1.0.0
*
* (C) Copyright 2018 GoPro Inc (http://gopro.com/).
*
* Licensed under either:
* - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
* - MIT license, http://opensource.org/licenses/MIT
* at your option.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "timer.h"
/*!
@brief Initialize a timer
The frequency of the performance timer is determined if it has not
already been obtained.
*/
void InitTimer(TIMER *timer)
{
timer->begin = 0;
timer->elapsed = 0;
}
void StartTimer(TIMER *timer)
{
timer->begin = clock();
}
void StopTimer(TIMER *timer)
{
timer->elapsed += (clock() - timer->begin);
}
float TimeSecs(TIMER *timer)
{
return (float)(timer->elapsed) / CLOCKS_PER_SEC;
}
float TimeMSecs(TIMER *timer)
{
return (float)(TimeSecs(timer) * 1000);
}
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