| /* |
| * 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; } |
| }; |