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/******************************************************************************
* Copyright (c) Intel Corporation - All rights reserved. *
* This file is part of the LIBXSMM library. *
* *
* For information on the license, see the LICENSE file. *
* Further information: https://github.com/hfp/libxsmm/ *
* SPDX-License-Identifier: BSD-3-Clause *
******************************************************************************/
/* Hans Pabst (Intel Corp.)
******************************************************************************/
#ifndef LIBXSMM_TIMER_H
#define LIBXSMM_TIMER_H
#include "libxsmm_macros.h"
typedef unsigned long long libxsmm_timer_tickint;
LIBXSMM_EXTERN_C typedef struct LIBXSMM_RETARGETABLE libxsmm_timer_info {
int tsc;
} libxsmm_timer_info;
/** Query timer properties. */
LIBXSMM_API int libxsmm_get_timer_info(libxsmm_timer_info* info);
/**
* Returns the current clock tick of a monotonic timer source with
* platform-specific resolution (not necessarily CPU cycles).
*/
LIBXSMM_API libxsmm_timer_tickint libxsmm_timer_tick(void);
/** Returns the difference between two timer ticks (cycles); avoids potential side-effects/assumptions of LIBXSMM_DIFF. */
LIBXSMM_API_INLINE libxsmm_timer_tickint libxsmm_timer_ncycles(libxsmm_timer_tickint tick0, libxsmm_timer_tickint tick1) {
return LIBXSMM_DELTA(tick0, tick1);
}
/** Returns the duration (in seconds) between two values received by libxsmm_timer_tick. */
LIBXSMM_API double libxsmm_timer_duration(libxsmm_timer_tickint tick0, libxsmm_timer_tickint tick1);
#endif /*LIBXSMM_TIMER_H*/
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