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/*
Copyright (c) 2012 Martin Sustrik All rights reserved.
Copyright 2015 Garrett D'Amore <garrett@damore.org>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom
the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
*/
#ifndef NN_STOPWATCH_INCLUDED
#define NN_STOPWATCH_INCLUDED
#include <stdint.h>
#include "err.h"
/* Check whether measured time is the expected time (in microseconds).
The upper tolerance is 50ms so that the test doesn't fail even on
very slow or very loaded systems. Likewise on some systems we can
wind up firing up to a single tick early (Windows), so the lower bound
is pretty low. The consequence of this is that programs which specify
a timeout should be a little more pessimistic (at least 10ms) then they
might otherwise think they need to be. */
#define time_assert(actual,expected) \
nn_assert (actual > ((expected) - 10000) && actual < ((expected) + 50000));
/* Measures time interval in microseconds. */
struct nn_stopwatch {
uint64_t start;
};
void nn_stopwatch_init (struct nn_stopwatch *self);
uint64_t nn_stopwatch_term (struct nn_stopwatch *self);
#endif
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