Mercurial > hg > graal-jvmci-8
view src/share/vm/oops/methodKlass.hpp @ 4097:dc467e8b2c5e
7112743: G1: Reduce overhead of marking closure during evacuation pauses
Summary: Parallelize the serial code that was used to mark objects reachable from survivor objects in the collection set. Some minor improvments in the timers used to track the freeing of the collection set along with some tweaks to PrintGCDetails.
Reviewed-by: tonyp, brutisso
author | johnc |
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date | Thu, 17 Nov 2011 12:40:15 -0800 |
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_METHODKLASS_HPP #define SHARE_VM_OOPS_METHODKLASS_HPP #include "oops/klass.hpp" #include "oops/klassOop.hpp" #include "oops/methodOop.hpp" // a methodKlass is the klass of a methodOop class methodKlass : public Klass { friend class VMStructs; private: juint _alloc_size; // allocation profiling support public: // Testing bool oop_is_method() const { return true; } // Allocation DEFINE_ALLOCATE_PERMANENT(methodKlass); methodOop allocate(constMethodHandle xconst, AccessFlags access_flags, TRAPS); static klassOop create_klass(TRAPS); // Sizing int oop_size(oop obj) const; int klass_oop_size() const { return object_size(); } // Casting from klassOop static methodKlass* cast(klassOop k) { assert(k->klass_part()->oop_is_method(), "cast to methodKlass"); return (methodKlass*) k->klass_part(); } // Sizing static int header_size() { return oopDesc::header_size() + sizeof(methodKlass)/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); bool oop_is_parsable(oop obj) const; // Parallel Scavenge and Parallel Old PARALLEL_GC_DECLS // Allocation profiling support juint alloc_size() const { return _alloc_size; } void set_alloc_size(juint n) { _alloc_size = n; } // Iterators int oop_oop_iterate(oop obj, OopClosure* blk); int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); public: // Printing void oop_print_value_on(oop obj, outputStream* st); #ifndef PRODUCT void oop_print_on (oop obj, outputStream* st); #endif //PRODUCT // Verify operations const char* internal_name() const; void oop_verify_on(oop obj, outputStream* st); bool oop_partially_loaded(oop obj) const; void oop_set_partially_loaded(oop obj); }; #endif // SHARE_VM_OOPS_METHODKLASS_HPP