Mercurial > hg > graal-compiler
view src/share/vm/oops/klassKlass.hpp @ 5984:fd09f2d8283e
7157141: crash in 64 bit with corrupted oops
Reviewed-by: kvn, iveresov
author | never |
---|---|
date | Mon, 02 Apr 2012 16:05:56 -0700 |
parents | f95d63e2154a |
children | dddcdb7ae209 |
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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_KLASSKLASS_HPP #define SHARE_VM_OOPS_KLASSKLASS_HPP #include "memory/oopFactory.hpp" #include "oops/klass.hpp" #include "oops/klassOop.hpp" // A klassKlass serves as the fix point of the klass chain. // The klass of klassKlass is itself. class klassKlass: public Klass { friend class VMStructs; private: juint _alloc_size; // allocation profiling support public: // Testing bool oop_is_klass() const { return true; } bool is_leaf_class() const { return true; } // Sizing int oop_size(oop obj) const; int klass_oop_size() const { return object_size(); } // Allocation DEFINE_ALLOCATE_PERMANENT(klassKlass); static klassOop create_klass(TRAPS ); // Casting from klassOop static klassKlass* cast(klassOop k) { assert(k->klass_part()->oop_is_klass(), "cast to klassKlass"); return (klassKlass*) k->klass_part(); } // Sizing static int header_size() { return oopDesc::header_size() + sizeof(klassKlass)/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); // Allocation profiling support juint alloc_size() const { return _alloc_size; } void set_alloc_size(juint n) { _alloc_size = n; } // Printing void oop_print_value_on(oop obj, outputStream* st); void oop_print_on (oop obj, outputStream* st); // Verification const char* internal_name() const; void oop_verify_on(oop obj, outputStream* st); }; #endif // SHARE_VM_OOPS_KLASSKLASS_HPP