Mercurial > hg > graal-compiler
view src/share/vm/oops/objArrayKlassKlass.hpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children |
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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_OBJARRAYKLASSKLASS_HPP #define SHARE_VM_OOPS_OBJARRAYKLASSKLASS_HPP #include "oops/arrayKlassKlass.hpp" #include "oops/objArrayKlass.hpp" // The objArrayKlassKlass is klass for all objArrayKlass' class objArrayKlassKlass : public arrayKlassKlass { public: // Testing virtual bool oop_is_objArrayKlass() const { return true; } // Dispatched operation int oop_size(oop obj) const { return objArrayKlass::cast(klassOop(obj))->object_size(); } int klass_oop_size() const { return object_size(); } // Allocation DEFINE_ALLOCATE_PERMANENT(objArrayKlassKlass); static klassOop create_klass(TRAPS); klassOop allocate_objArray_klass(int n, KlassHandle element_klass, TRAPS); klassOop allocate_system_objArray_klass(TRAPS); // Used for bootstrapping in Universe::genesis // Casting from klassOop static objArrayKlassKlass* cast(klassOop k) { assert(k->klass_part()->oop_is_klass(), "cast to objArrayKlassKlass"); return (objArrayKlassKlass*) k->klass_part(); } // Sizing static int header_size() { return oopDesc::header_size() + sizeof(objArrayKlassKlass)/HeapWordSize; } int object_size() const { return align_object_size(header_size()); } // Garbage collection void oop_follow_contents(oop obj); int oop_adjust_pointers(oop obj); // Parallel Scavenge and Parallel Old PARALLEL_GC_DECLS // Iterators int oop_oop_iterate(oop obj, OopClosure* blk); int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); private: // helpers static klassOop allocate_objArray_klass_impl(objArrayKlassKlassHandle this_oop, int n, KlassHandle element_klass, TRAPS); public: // Printing void oop_print_value_on(oop obj, outputStream* st); #ifndef PRODUCT void oop_print_on(oop obj, outputStream* st); #endif //PRODUCT // Verification const char* internal_name() const; void oop_verify_on(oop obj, outputStream* st); }; #endif // SHARE_VM_OOPS_OBJARRAYKLASSKLASS_HPP