Mercurial > hg > truffle
view src/share/vm/oops/compiledICHolderOop.hpp @ 1339:09ac706c2623
Merge
author | asaha |
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date | Wed, 24 Mar 2010 17:16:33 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 1998-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // A compiledICHolderOop is a helper object for the inline cache implementation. // It holds an intermediate value (method+klass pair) used when converting from // compiled to an interpreted call. // // compiledICHolderOops are always allocated permanent (to avoid traversing the // codeCache during scavenge). class compiledICHolderOopDesc : public oopDesc { friend class VMStructs; private: methodOop _holder_method; klassOop _holder_klass; // to avoid name conflict with oopDesc::_klass public: // accessors methodOop holder_method() const { return _holder_method; } klassOop holder_klass() const { return _holder_klass; } void set_holder_method(methodOop m) { oop_store_without_check((oop*)&_holder_method, (oop)m); } void set_holder_klass(klassOop k) { oop_store_without_check((oop*)&_holder_klass, (oop)k); } static int header_size() { return sizeof(compiledICHolderOopDesc)/HeapWordSize; } static int object_size() { return align_object_size(header_size()); } // interpreter support (offsets in bytes) static int holder_method_offset() { return offset_of(compiledICHolderOopDesc, _holder_method); } static int holder_klass_offset() { return offset_of(compiledICHolderOopDesc, _holder_klass); } // GC support oop* adr_holder_method() const { return (oop*)&_holder_method; } oop* adr_holder_klass() const { return (oop*)&_holder_klass; } };