/*
* Copyright ( c ) 2019 , 2022 , 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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*/
#ifndef SHARE_GC_SHARED_SCAVENGABLENMETHODS_HPP
#define SHARE_GC_SHARED_SCAVENGABLENMETHODS_HPP
#include "memory/allStatic.hpp"
#include "utilities/macros.hpp"
class BoolObjectClosure;
class CodeBlobClosure;
class CodeBlobToOopClosure;
class nmethod;
class ScavengableNMethods : public AllStatic {
friend class VMStructs;
static nmethod* _head;
static BoolObjectClosure* _is_scavengable;
public :
static void initialize(BoolObjectClosure* is_scavengable);
static void register_nmethod(nmethod* nm);
static void unregister_nmethod(nmethod* nm);
static void verify_nmethod(nmethod* nm);
// Remove nmethods that no longer have scavengable oops.
static void prune_nmethods();
// Apply closure to every scavengable nmethod.
// Remove nmethods that no longer have scavengable oops.
static void nmethods_do(CodeBlobToOopClosure* cl);
static void asserted_non_scavengable_nmethods_do(CodeBlobClosure* cl) PRODUCT_RETURN;
private :
static void nmethods_do_and_prune(CodeBlobToOopClosure* cl);
static void unlist_nmethod(nmethod* nm, nmethod* prev);
static bool has_scavengable_oops(nmethod* nm);
static void mark_on_list_nmethods() PRODUCT_RETURN;
static void verify_unlisted_nmethods(CodeBlobClosure* cl) PRODUCT_RETURN;
};
#endif // SHARE_GC_SHARED_SCAVENGABLENMETHODS_HPP
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