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/* Copyright (C) 2021-2025 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
This program 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, or (at your option)
any later version.
This program 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, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include <stdio.h>
#include <stdlib.h>
#include "stopwatch.h"
static void sx_burncpu ();
int
sx_cputime ()
{
wlog ("start of sx_cputime", NULL);
/* put a memory leak in here */
(void) malloc (13);
fprintf (stderr, "sx_burncpu @ %p\n", sx_burncpu);
sx_burncpu ();
wlog ("end of sx_cputime", NULL);
return 13;
}
void sx_init () __attribute__ ((constructor));
void
sx_init ()
{
fprintf (stderr, "sx_init executed\n");
}
/* sx_burncpu - loop to use a bunch of user time */
void
sx_burncpu ()
{
hrtime_t start = gethrtime ();
hrtime_t vstart = gethrvtime ();
volatile float x = 0.; /* temp variable for f.p. calculation */
long long count = 0;
do
{
x = 0.0;
for (int j = 0; j < 100000; j++)
x = x + 1.0;
count++;
}
while (start + testtime * 1e9 > gethrtime ());
fprintf (stderr, " Performed %lld while-loop iterations\n", count);
whrvlog (gethrtime () - start, gethrvtime () - vstart, "sx_burncpu", NULL);
}
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