8221540: ZGC: Reduce width of zForwardingEntry::from_index field
Reviewed-by: stefank, eosterlund
/*
* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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).
*
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* 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_Z_ZNMETHOD_HPP
#define SHARE_GC_Z_ZNMETHOD_HPP
#include "memory/allocation.hpp"
class nmethod;
class OopClosure;
class ZReentrantLock;
class ZWorkers;
class ZNMethod : public AllStatic {
private:
static void attach_gc_data(nmethod* nm);
static void log_register(const nmethod* nm);
static void log_unregister(const nmethod* nm);
public:
static void register_nmethod(nmethod* nm);
static void unregister_nmethod(nmethod* nm);
static void flush_nmethod(nmethod* nm);
static void disarm_nmethod(nmethod* nm);
static void nmethod_oops_do(nmethod* nm, OopClosure* cl);
static void oops_do_begin();
static void oops_do_end();
static void oops_do(OopClosure* cl);
static ZReentrantLock* lock_for_nmethod(nmethod* nm);
static void unlink(ZWorkers* workers, bool unloading_occurred);
static void purge(ZWorkers* workers);
};
#endif // SHARE_GC_Z_ZNMETHOD_HPP