/*
* BSD LICENSE
*
* Copyright(c) 2016 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h> /* vsnprintf() */
#include <stdarg.h> /* va_start(), va_end() */
#include <limits.h> /* ULONG_MAX */
#include <string.h> /* memset() */
#include "tsc.h"
static const double __measurement_cost = 0;
void tsc_init(struct tsc_prof *p, const char *name, ...)
{
va_list ap;
va_start(ap, name);
memset(p->name, 0, sizeof(p->name));
vsnprintf(p->name, sizeof(p->name) - 1, name, ap);
va_end(ap);
p->clk_avg = 0;
p->clk_avgc = 0;
p->clk_result = 0.0;
p->clk_max = 0.0;
p->clk_min = (double) ULONG_MAX;
p->cost = __measurement_cost;
}
void tsc_print(struct tsc_prof *p)
{
tsc_get_avg(p);
printf("[%s] work items %llu; cycles per work item: "
"avg=%.3f min=%.3f max=%.3f jitter=%.3f\n",
p->name, (unsigned long long)p->clk_avgc,
p->clk_result, p->clk_min, p->clk_max, p->clk_max - p->clk_min);
}