Mercurial > hg > graal-compiler
view src/share/vm/oops/instanceRefKlass.hpp @ 6010:720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
Summary: Change the type of fields / variables / etc. that represent region counts and indeces from size_t to uint.
Reviewed-by: iveresov, brutisso, jmasa, jwilhelm
author | tonyp |
---|---|
date | Wed, 18 Apr 2012 07:21:15 -0400 |
parents | 7cf1a74771e8 |
children | da91efe96a93 |
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/* * Copyright (c) 1997, 2010, 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 "oops/instanceKlass.hpp" // 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 { public: // Type testing bool oop_is_instanceRef() const { return true; } // Casting from klassOop static instanceRefKlass* cast(klassOop k) { assert(k->klass_part()->oop_is_instanceRef(), "cast to instanceRefKlass"); return (instanceRefKlass*) k->klass_part(); } // allocation DEFINE_ALLOCATE_PERMANENT(instanceRefKlass); // Garbage collection int oop_adjust_pointers(oop obj); void oop_follow_contents(oop obj); // Parallel Scavenge and Parallel Old PARALLEL_GC_DECLS int oop_oop_iterate(oop obj, OopClosure* blk) { return oop_oop_iterate_v(obj, blk); } int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { return oop_oop_iterate_v_m(obj, blk, mr); } #define InstanceRefKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr); ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DECL) ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_DECL) #ifndef SERIALGC #define InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \ int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk); ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) #endif // !SERIALGC static void release_and_notify_pending_list_lock(BasicLock *pending_list_basic_lock); static void acquire_pending_list_lock(BasicLock *pending_list_basic_lock); static bool owns_pending_list_lock(JavaThread* thread); // Update non-static oop maps so 'referent', 'nextPending' and // 'discovered' will look like non-oops static void update_nonstatic_oop_maps(klassOop k); public: // Verification void oop_verify_on(oop obj, outputStream* st); }; #endif // SHARE_VM_OOPS_INSTANCEREFKLASS_HPP