/*
* Copyright (c) 2020 Red Hat, Inc.
*
* 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 2
* of the License, 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* $Id: //eng/vdo-releases/aluminum/src/c++/vdo/kernel/dedupeIndex.c#1 $
*/
#include "dedupeIndex.h"
#include "numeric.h"
#include "udsIndex.h"
// These times are in milliseconds
unsigned int albireoTimeoutInterval = 5000;
unsigned int minAlbireoTimerInterval = 100;
// These times are in jiffies
Jiffies albireoTimeoutJiffies = 0;
static Jiffies minAlbireoTimerJiffies = 0;
/**********************************************************************/
Jiffies getAlbireoTimeout(Jiffies startJiffies)
{
return maxULong(startJiffies + albireoTimeoutJiffies,
jiffies + minAlbireoTimerJiffies);
}
/**********************************************************************/
void setAlbireoTimeoutInterval(unsigned int value)
{
// Arbitrary maximum value is two minutes
if (value > 120000) {
value = 120000;
}
// Arbitrary minimum value is 2 jiffies
Jiffies albJiffies = msecs_to_jiffies(value);
if (albJiffies < 2) {
albJiffies = 2;
value = jiffies_to_msecs(albJiffies);
}
albireoTimeoutInterval = value;
albireoTimeoutJiffies = albJiffies;
}
/**********************************************************************/
void setMinAlbireoTimerInterval(unsigned int value)
{
// Arbitrary maximum value is one second
if (value > 1000) {
value = 1000;
}
// Arbitrary minimum value is 2 jiffies
Jiffies minJiffies = msecs_to_jiffies(value);
if (minJiffies < 2) {
minJiffies = 2;
value = jiffies_to_msecs(minJiffies);
}
minAlbireoTimerInterval = value;
minAlbireoTimerJiffies = minJiffies;
}
/**********************************************************************/
int makeDedupeIndex(DedupeIndex **indexPtr, KernelLayer *layer)
{
if (albireoTimeoutJiffies == 0) {
setAlbireoTimeoutInterval(albireoTimeoutInterval);
}
if (minAlbireoTimerJiffies == 0) {
setMinAlbireoTimerInterval(minAlbireoTimerInterval);
}
return makeUDSIndex(layer, indexPtr);
}