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8187443: Forest Consolidation: Move files to unified layout

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Reviewed-by: darcy, ihse
This commit is contained in:
Erik Joelsson 2017-09-12 19:03:39 +02:00
parent 270fe13182
commit 3789983e89
56923 changed files with 3 additions and 15727 deletions
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158
hotspot/src/share/vm/oops/instanceRefKlass.hpp
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/*
* Copyright (c) 1997, 2017, 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.
*
*/
#ifndef SHARE_VM_OOPS_INSTANCEREFKLASS_HPP
#define SHARE_VM_OOPS_INSTANCEREFKLASS_HPP
#include "gc/shared/specialized_oop_closures.hpp"
#include "oops/instanceKlass.hpp"
#include "utilities/macros.hpp"
class ClassFileParser;
// An InstanceRefKlass is a specialized InstanceKlass for Java
// classes that are subclasses of java/lang/ref/Reference.
//
// These classes are used to implement soft/weak/final/phantom
// references and finalization, and need special treatment by the
// garbage collector.
//
// During GC discovered reference objects are added (chained) to one
// of the four lists below, depending on the type of reference.
// The linked occurs through the next field in class java/lang/ref/Reference.
//
// Afterwards, the discovered references are processed in decreasing
// order of reachability. Reference objects eligible for notification
// are linked to the static pending_list in class java/lang/ref/Reference,
// and the pending list lock object in the same class is notified.
class InstanceRefKlass: public InstanceKlass {
friend class InstanceKlass;
private:
InstanceRefKlass(const ClassFileParser& parser) : InstanceKlass(parser, InstanceKlass::_misc_kind_reference) {}
public:
InstanceRefKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
// GC specific object visitors
//
#if INCLUDE_ALL_GCS
// Parallel Scavenge
void oop_ps_push_contents( oop obj, PSPromotionManager* pm);
// Parallel Compact
void oop_pc_follow_contents(oop obj, ParCompactionManager* cm);
void oop_pc_update_pointers(oop obj, ParCompactionManager* cm);
#endif
// Oop fields (and metadata) iterators
// [nv = true] Use non-virtual calls to do_oop_nv.
// [nv = false] Use virtual calls to do_oop.
//
// The InstanceRefKlass iterators also support reference processing.
// Forward iteration
private:
// Iterate over all oop fields and metadata.
template <bool nv, class OopClosureType>
inline void oop_oop_iterate(oop obj, OopClosureType* closure);
// Reverse iteration
#if INCLUDE_ALL_GCS
// Iterate over all oop fields and metadata.
template <bool nv, class OopClosureType>
inline void oop_oop_iterate_reverse(oop obj, OopClosureType* closure);
#endif // INCLUDE_ALL_GCS
// Bounded range iteration
// Iterate over all oop fields and metadata.
template <bool nv, class OopClosureType>
inline void oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr);
// Reference processing part of the iterators.
// Specialized for [T = oop] or [T = narrowOop].
template <bool nv, typename T, class OopClosureType, class Contains>
inline void oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains);
// Only perform reference processing if the referent object is within mr.
template <bool nv, class OopClosureType>
inline void oop_oop_iterate_ref_processing_bounded(oop obj, OopClosureType* closure, MemRegion mr);
// Reference processing
template <bool nv, class OopClosureType>
inline void oop_oop_iterate_ref_processing(oop obj, OopClosureType* closure);
// Building blocks for specialized handling.
template <bool nv, typename T, class OopClosureType, class Contains>
static void do_referent(oop obj, OopClosureType* closure, Contains& contains);
template <bool nv, typename T, class OopClosureType, class Contains>
static void do_next(oop obj, OopClosureType* closure, Contains& contains);
template <bool nv, typename T, class OopClosureType, class Contains>
static void do_discovered(oop obj, OopClosureType* closure, Contains& contains);
template <typename T, class OopClosureType>
static bool try_discover(oop obj, ReferenceType type, OopClosureType* closure);
// Do discovery while handling InstanceRefKlasses. Reference discovery
// is only done if the closure provides a ReferenceProcessor.
template <bool nv, typename T, class OopClosureType, class Contains>
static void oop_oop_iterate_discovery(oop obj, ReferenceType type, OopClosureType* closure, Contains& contains);
// Used for a special case in G1 where the closure needs to be applied
// to the discovered field. Reference discovery is also done if the
// closure provides a ReferenceProcessor.
template <bool nv, typename T, class OopClosureType, class Contains>
static void oop_oop_iterate_discovered_and_discovery(oop obj, ReferenceType type, OopClosureType* closure, Contains& contains);
// Apply the closure to all fields. No reference discovery is done.
template <bool nv, typename T, class OopClosureType, class Contains>
static void oop_oop_iterate_fields(oop obj, OopClosureType* closure, Contains& contains);
template <typename T>
static void trace_reference_gc(const char *s, oop obj) NOT_DEBUG_RETURN;
public:
ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL)
ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL)
#if INCLUDE_ALL_GCS
ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_OOP_ITERATE_DECL_BACKWARDS)
ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_OOP_ITERATE_DECL_BACKWARDS)
#endif // INCLUDE_ALL_GCS
// Update non-static oop maps so 'referent', 'nextPending' and
// 'discovered' will look like non-oops
static void update_nonstatic_oop_maps(Klass* k);
public:
// Verification
void oop_verify_on(oop obj, outputStream* st);
};
#endif // SHARE_VM_OOPS_INSTANCEREFKLASS_HPP