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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_TIMER_H
#define JITTERENTROPY_TIMER_H
#include "jitterentropy.h"
#ifdef __cplusplus
extern "C"
{
#endif
#ifdef JENT_CONF_ENABLE_INTERNAL_TIMER
void jent_notime_block_switch(void);
int jent_notime_settick(struct rand_data *ec);
void jent_notime_unsettick(struct rand_data *ec);
void jent_get_nstime_internal(struct rand_data *ec, uint64_t *out);
int jent_notime_enable(struct rand_data *ec, unsigned int flags);
void jent_notime_disable(struct rand_data *ec);
int jent_notime_switch(struct jent_notime_thread *new_thread);
void jent_notime_force(void);
int jent_notime_forced(void);
#else /* JENT_CONF_ENABLE_INTERNAL_TIMER */
static inline void jent_notime_block_switch(void) { }
static inline int jent_notime_settick(struct rand_data *ec)
{
(void)ec;
return 0;
}
static inline void jent_notime_unsettick(struct rand_data *ec) { (void)ec; }
static inline void jent_get_nstime_internal(struct rand_data *ec, uint64_t *out)
{
(void)ec;
jent_get_nstime(out);
}
static inline int jent_notime_enable(struct rand_data *ec, unsigned int flags)
{
(void)ec;
/* If we force the timer-less noise source, we return an error */
if (flags & JENT_FORCE_INTERNAL_TIMER)
return EHEALTH;
return 0;
}
static inline void jent_notime_disable(struct rand_data *ec)
{
(void)ec;
}
static inline int jent_notime_switch(struct jent_notime_thread *new_thread)
{
(void)new_thread;
return -EOPNOTSUPP;
}
static inline void jent_notime_force(void) { }
static inline int jent_notime_forced(void) { return 0; }
#endif /* JENT_CONF_ENABLE_INTERNAL_TIMER */
#ifdef __cplusplus
}
#endif
#endif /* JITTERENTROPY-TIMER_H */
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