You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.1 KiB
67 lines
2.1 KiB
/*
|
|
Copyright (c) 2013 Martin Sustrik All rights reserved.
|
|
|
|
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.
|
|
*/
|
|
|
|
#include "backoff.h"
|
|
|
|
void nn_backoff_init (struct nn_backoff *self, int src, int minivl, int maxivl,
|
|
struct nn_fsm *owner)
|
|
{
|
|
nn_timer_init (&self->timer, src, owner);
|
|
self->minivl = minivl;
|
|
self->maxivl = maxivl;
|
|
self->n = 1;
|
|
}
|
|
|
|
void nn_backoff_term (struct nn_backoff *self)
|
|
{
|
|
nn_timer_term (&self->timer);
|
|
}
|
|
|
|
int nn_backoff_isidle (struct nn_backoff *self)
|
|
{
|
|
return nn_timer_isidle (&self->timer);
|
|
}
|
|
|
|
void nn_backoff_start (struct nn_backoff *self)
|
|
{
|
|
int timeout;
|
|
|
|
/* Start the timer for the actual n value. If the interval haven't yet
|
|
exceeded the maximum, double the next timeout value. */
|
|
timeout = (self->n - 1) * self->minivl;
|
|
if (timeout > self->maxivl)
|
|
timeout = self->maxivl;
|
|
else
|
|
self->n *= 2;
|
|
nn_timer_start (&self->timer, timeout);
|
|
}
|
|
|
|
void nn_backoff_stop (struct nn_backoff *self)
|
|
{
|
|
nn_timer_stop (&self->timer);
|
|
}
|
|
|
|
void nn_backoff_reset (struct nn_backoff *self)
|
|
{
|
|
self->n = 1;
|
|
}
|
|
|
|
|