/*
* Copyright ( c ) 2020 , 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code 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
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
#include "precompiled.hpp"
#include "gc/g1/g1ConcurrentRefineStats.hpp"
G1ConcurrentRefineStats::G1ConcurrentRefineStats() :
_refinement_time(),
_refined_cards(0 ),
_precleaned_cards(0 ),
_dirtied_cards(0 )
{}
double G1ConcurrentRefineStats::refinement_rate_ms() const {
// Report 0 when no time recorded because no refinement performed.
double secs = refinement_time().seconds();
return (secs > 0 ) ? (refined_cards() / (secs * MILLIUNITS)) : 0 .0 ;
}
G1ConcurrentRefineStats&
G1ConcurrentRefineStats::operator +=(const G1ConcurrentRefineStats& other) {
_refinement_time += other._refinement_time;
_refined_cards += other._refined_cards;
_precleaned_cards += other._precleaned_cards;
_dirtied_cards += other._dirtied_cards;
return *this ;
}
template <typename T>
static T clipped_sub(T x, T y) {
return (x < y) ? T() : (x - y);
}
G1ConcurrentRefineStats&
G1ConcurrentRefineStats::operator -=(const G1ConcurrentRefineStats& other) {
_refinement_time = clipped_sub(_refinement_time, other._refinement_time);
_refined_cards = clipped_sub(_refined_cards, other._refined_cards);
_precleaned_cards = clipped_sub(_precleaned_cards, other._precleaned_cards);
_dirtied_cards = clipped_sub(_dirtied_cards, other._dirtied_cards);
return *this ;
}
void G1ConcurrentRefineStats::reset() {
*this = G1ConcurrentRefineStats();
}
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