/*
* Copyright ( c ) 2014 , 2020 , 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 .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*
*/
#include "precompiled.hpp"
#include "classfile/javaClasses.inline.hpp"
#include "jfr/leakprofiler/chains/edge.hpp"
#include "jfr/leakprofiler/utilities/unifiedOopRef.inline.hpp"
Edge::Edge(const Edge* parent, UnifiedOopRef reference) : _parent(parent),
_reference(reference) {}
const oop Edge::pointee() const {
return _reference.dereference();
}
const oop Edge::reference_owner() const {
return is_root() ? (oop)NULL : _parent->pointee();
}
size_t Edge::distance_to_root() const {
size_t depth = 0 ;
const Edge* current = _parent;
while (current != NULL) {
depth++;
current = current->parent();
}
return depth;
}
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