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/*
* Copyright (C) 2021, Stephan Mueller <smueller@chronox.de>
*
* License: see LICENSE file in root directory
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
* WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef JITTERENTROPY_HEALTH_H
#define JITTERENTROPY_HEALTH_H
#ifdef __cplusplus
extern "C"
{
#endif
static inline uint64_t jent_delta(uint64_t prev, uint64_t next)
{
return (next - prev);
}
#ifdef JENT_HEALTH_LAG_PREDICTOR
void jent_lag_init(struct rand_data *ec, unsigned int osr);
#else /* JENT_HEALTH_LAG_PREDICTOR */
static inline void jent_lag_init(struct rand_data *ec, unsigned int osr)
{
(void)ec;
(void)osr;
}
#endif /* JENT_HEALTH_LAG_PREDICTOR */
void jent_apt_init(struct rand_data *ec, unsigned int osr);
unsigned int jent_stuck(struct rand_data *ec, uint64_t current_delta);
unsigned int jent_health_failure(struct rand_data *ec);
#ifdef __cplusplus
}
#endif
#endif /* JITTERENTROPY_HEALTH_H */
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